Examination for Japanese University Admission (EJU) â Questions and Answers
Question 1: æ¥æ¬åœæ²æ³ã«ããã倩çã®å°äœã«é¢ããèšè¿°ãšããŠãæãé©åãªãã®ã¯ã©ããã
- åœäŒã®æåã«åºã¥ããŠãæ³åŸãå¶å®ããã
- åœã®å éŠã§ãããè¡æ¿æš©ãçµ±æ¬ããã
- åœæ°çµ±åã®è±¡åŸŽã§ãããåœäºè¡çºã®ã¿ãè¡ãã (Correct answer)
- å é£ã®å©èšãšæ¿èªãªãã«ãæ¿æ²»çæš©èœãè¡äœ¿ããã
Correct answer: åœæ°çµ±åã®è±¡åŸŽã§ãããåœäºè¡çºã®ã¿ãè¡ãã
æ¥æ¬åœæ²æ³ç¬¬1æ¡ã§å€©çã¯ãæ¥æ¬åœã®è±¡åŸŽã§ããæ¥æ¬åœæ°çµ±åã®è±¡åŸŽããšå®ããããŠããŸãããŸãã第4æ¡ã§ãåœæ¿ã«é¢ããæš©èœãæããªãããšããã第7æ¡ã«å®ããããåœäºè¡çºã®ã¿ããå é£ã®å©èšãšæ¿èªã®ããšã§è¡ããŸãã
Question 2: The substances listed below are believed to have been in existence or formed during the process of chemical evolution that preceded the emergence of life. From the choices below, choose the answer that correctly arranges a - c in the order in which they appeared. <br><br> (a) Proteins, nucleic acids, etc. <br> (b) Amino acids, sugars, phospholipids, etc. <br> (c) Hydrogen sulfide, hydrogen, ammonia, methane, etc.
- a â b â c
- b â c â a
- b â a â c
- a â c â b
- c â b â a (Correct answer)
- c â a â b
Correct answer: c â b â a
Explanation: <br> (c) Hydrogen sulfide, hydrogen, ammonia, methane, etc.: These are simple inorganic molecules that were likely present in the early Earth's atmosphere or hydrothermal vents. <br> (b) Amino acids, sugars, phospholipids, etc.: These are organic molecules that could have formed through prebiotic chemistry, such as the Miller-Urey experiment, which simulated conditions believed to be present on early Earth. <br> (a) Proteins, nucleic acids, etc.: These are complex biomolecules that are essential for life and likely formed later, possibly through the polymerization of simpler organic molecules. <br><br> This sequence reflects a plausible progression from simple inorganic molecules to more complex organic molecules during the early stages of chemical evolution on Earth.
Question 3: From the choices below, choose the statement that correctly describes photosynthesis in green sulfur bacteria:
- Oxygen is released in the process of photosynthesis in green sulfur bacteria.
- Electrons from H2O are used to synthesize organic compounds in the process of photosynthesis in green sulfur bacteria.
- Photosynthesis in green sulfur bacteria takes place in the chloroplasts.
- A photosynthetic pigment called bacteriochlorophyll is used in photosynthesis in green sulfur bacteria. (Correct answer)
Correct answer: A photosynthetic pigment called bacteriochlorophyll is used in photosynthesis in green sulfur bacteria.
Explanation: <br> Green sulfur bacteria use bacteriochlorophyll as their primary photosynthetic pigment, rather than chlorophyll found in plants. This pigment enables them to perform photosynthesis using light energy to produce organic compounds.
Question 4: åäœäœã§ãã ³âµCl 㚠³â·Cl ã®é¢ä¿ã«ã€ããŠãæ£ããèšè¿°ã¯ã©ããã
- äžæ§åã®æ°ã¯åãã ããéœåã®æ°ãç°ãªãã
- éœåã®æ°ã¯åãã ããäžæ§åã®æ°ãç°ãªãã (Correct answer)
- éœåãšäžæ§åã®äž¡æ¹ã®æ°ãç°ãªãã
- éœåã®æ°ã¯åãã ããååŠçæ§è³ªã倧ããç°ãªãã
Correct answer: éœåã®æ°ã¯åãã ããäžæ§åã®æ°ãç°ãªãã
åäœäœïŒã¢ã€ãœããŒãïŒãšã¯ãååçªå·ïŒéœåã®æ°ïŒãåãã§ãè³ªéæ°ïŒéœåã®æ°ãšäžæ§åã®æ°ã®åèšïŒãç°ãªãååå士ã®é¢ä¿ãæããŸãã³âµCl 㚠³â·Cl ã¯ã©ã¡ããå¡©çŽ ååãªã®ã§ãéœåã®æ°ã¯åã17åã§ããããããè³ªéæ°ã35ãš37ã§ç°ãªããããäžæ§åã®æ°ãç°ãªããŸãïŒÂ³âµClã¯18åã³â·Clã¯20åïŒã
Question 5: Snell's Law relates which two quantities at the interface between two media?
- The amplitudes of the incident and reflected waves
- The frequencies of the incident and refracted waves
- The angles of incidence and refraction and the refractive indices of the two media (Correct answer)
- The speeds of sound in the two media
Correct answer: The angles of incidence and refraction and the refractive indices of the two media
Snell's Law states n1 sin Ξ1 = n2 sin Ξ2, relating the refractive indices and angles of incidence and refraction.
Question 6: The following reaction is in an equilibrium state. Among the following statements about this reaction, two are correct. Choose the correct combination. <br><br> (a) If the temperature of this reaction is raised, the equilibrium constant will become smaller. <br> (b) If a catalyst is added, the equilibrium constant will become larger since the rate of reaction increases. <br> (c) Though the path of the reaction will not change by adding a catalyst, the activation energy of the reaction will become smaller. <br> (d) It is impossible to derive an equation explaining the relation between the rate of reaction and the concentration of reactants directly from the chemical equation.
- a, c
- a, b
- c, d
- b, c
- b, d
- a, d (Correct answer)
Correct answer: a, d
Explanation: <br> (a) If the temperature of this reaction is raised, the equilibrium constant will become smaller. <br> - This is correct for exothermic reactions. Increasing temperature shifts the equilibrium to favor the reactants, decreasing the equilibrium constant. <br><br> (d) It is impossible to derive an equation explaining the relation between the rate of reaction and the concentration of reactants directly from the chemical equation. <br> - This is correct. The rate law is determined experimentally and cannot be derived directly from the stoichiometric coefficients of the chemical equation.
Question 7: ïŒé³å£°ïŒ 倧åŠã®äºå宀ããåŠçãžã®çå®çªé»è©±ã¡ãã»ãŒãžã§ãã ãããã«ã¡ã¯ãABC倧åŠã®åŠç課ã§ããçåŠçã®ãã ã»ãã³ãžã¥ã³ããã«ãç¥ããã§ããå æ¥ç³è«ããã奚åŠéã®æžé¡ã§ãããäžãæã眲åãæããŠãããšããããããŸããã倧å€ç³ãèš³ãããŸããããä»é±ã®éææ¥ãŸã§ã«ãåŠç課ã®çªå£ãŸã§ãè¶ãããã ããŸãã§ããããã詳ããå Žæã¯æžé¡ã®è£ã«æžããŠãããŸãã®ã§ããã¡ããã確èªãã ããããããããé¡ãããŸããã ïŒè³ªåïŒ ãã ããã¯ããªã倧åŠã®åŠç課ã«è¡ããªããã°ãªããŸãããã
- æžé¡ã«çœ²åã远å ããããã (Correct answer)
- æ°ãã奚åŠéã«ç³ã蟌ãããã
- 奚åŠéãåãåãããã
- æžé¡ã®æžãæ¹ãæããŠãããããã
Correct answer: æžé¡ã«çœ²åã远å ããããã
ã¡ãã»ãŒãžã§ã¯ããäžãæã眲åãæããŠãããšããããããŸããããšèšã£ãŠããããã®ããã«éææ¥ãŸã§ã«åŠçèª²ã«æ¥ãããã«äŸé ŒããŠããŸãããããã£ãŠããã ããã¯è¶³ããªã眲åãããããã«åŠç課ãžè¡ãå¿ èŠããããŸãã
Question 8: Let A and B be two sets such that n(A) = 15, n(B) = 20, and n(A ⩠B) = 5. What is the value of n(A ⪠B)?
- 40
- 30 (Correct answer)
- 25
- 35
Correct answer: 30
The number of elements in the union of two sets is given by the Principle of Inclusion-Exclusion: n(A ⪠B) = n(A) + n(B) - n(A ⩠B). Substituting the given values: n(A ⪠B) = 15 + 20 - 5 = 30.
Question 9: ååçªå·17ã®å¡©çŽ ïŒClïŒååã®åºåºç¶æ ã«ãããé»åé 眮ãšããŠãæãé©åãªãã®ã¯ã©ããã
- K(2)L(7)M(8)
- K(2)L(8)M(6)
- K(2)L(8)M(8)
- K(2)L(8)M(7) (Correct answer)
Correct answer: K(2)L(8)M(7)
å¡©çŽ ã®ååçªå·ã¯17ã§ãããããã¯ååæ žã«17åã®éœåãšãäžæ§ååã«17åã®é»åãããããšãæå³ããŸããé»åã¯ãšãã«ã®ãŒæºäœã®äœãé»åæ®»ããé ã«æºããããŠãããŸããKæ®»ã«ã¯æå€§2åãLæ®»ã«ã¯æå€§8åã®é»åãå容ãããŸãããããã£ãŠãæåã®2ã€ã®æ®»ã«åèš10åã®é»åãå ¥ã£ãåŸãæ®ãã®7åã®é»åãMæ®»ã«å ¥ããŸãããã£ãŠãå¡©çŽ ã®é»åé 眮ã¯K(2)L(8)M(7)ãšãªããŸãã
Question 10: A logarithmic function is given by y = logâ(x - 3). What is the domain of this function?
- All real numbers
- x > 0
- x < 3
- x > 3 (Correct answer)
Correct answer: x > 3
The argument of a logarithmic function must be strictly positive. For the function y = logâ(x - 3), this means that the expression (x - 3) must be greater than 0. Solving the inequality x - 3 > 0 gives x > 3. Therefore, the domain of the function is all real numbers greater than 3.
Question 11: The sum of the first n terms of an arithmetic sequence is Sâ = 3n² + 2n. What is the 5th term of the sequence?
- 27
- 35
- 29 (Correct answer)
- 32
Correct answer: 29
The nth term is aâ = Sâ - Sâââ = (3n² + 2n) - (3(n-1)² + 2(n-1)) = 6n - 1. For n=5: aâ = 6(5) - 1 = 29.
Question 12: Given that log 5 = 0.6990, evaluate log 5000.
- 3.6990 (Correct answer)
- 2.6990
- 4.6990
- 5.6990
Correct answer: 3.6990
Explanation: <br> The logarithm of a number represents the exponent to which a base must be raised to obtain that number. In this case, we are given that log 5 = 0.6990. To evaluate log 5000, we need to find the exponent to which the base 5 must be raised to obtain 5000. Since 5^4 = 625, and 5^5 = 3125, we can conclude that 5000 is between these two values. Therefore, the exponent must be between 4 and 5. Since the answer choices are in the form of 0.6990, we can deduce that the correct answer is 3.6990, as it falls between 3 and 4.
Question 13: ååçç©åŠã®äžå¿åçã§ããã»ã³ãã©ã«ãã°ãã«é¢ããèšè¿°ãšããŠãæãé©åãªãã®ã¯ã©ããã
- éºäŒæ å ±ã¯ãDNAããRNAãçµãŠã¿ã³ãã¯è³ªãžãšäžæ¹åã«æµããã (Correct answer)
- éºäŒæ å ±ã¯ãDNAãRNAãã¿ã³ãã¯è³ªã®éãåæ¹åã«æµããã
- éºäŒæ å ±ã¯ãRNAããDNAãçµãŠã¿ã³ãã¯è³ªãžãšäžæ¹åã«æµããã
- éºäŒæ å ±ã¯ãã¿ã³ãã¯è³ªããRNAãçµãŠDNAãžãšäžæ¹åã«æµããã
Correct answer: éºäŒæ å ±ã¯ãDNAããRNAãçµãŠã¿ã³ãã¯è³ªãžãšäžæ¹åã«æµããã
ã»ã³ãã©ã«ãã°ãã¯ãéºäŒæ å ±ããDNA â RNA â ã¿ã³ãã¯è³ªããšããäžæ¹åã®æµãã§äŒéããããšãããååçç©åŠã®åºæ¬ååã§ãããDNAã®æ å ±ãRNAã«åãåãããéçšãã転åããRNAã®æ å ±ã«åºã¥ããŠã¿ã³ãã¯è³ªãåæãããéçšãã翻蚳ããšããã
Question 14: The Seto Inland Sea (Seto Naikai) is an enclosed body of water located between which Japanese islands?
- Honshu and Hokkaido
- Honshu, Shikoku, and Kyushu (Correct answer)
- Shikoku and Hokkaido
- Kyushu and the Ryukyu Islands
Correct answer: Honshu, Shikoku, and Kyushu
The Seto Inland Sea is enclosed by Honshu to the north, Shikoku to the south, and Kyushu to the west, forming a sheltered maritime highway historically important for trade.
Question 15: For an object undergoing uniform circular motion at a constant speed, which of the following statements is correct?
- Its acceleration vector is directed towards the center of the circle. (Correct answer)
- Its acceleration is directed tangent to the circle.
- Its acceleration is zero because its speed is constant.
- Its velocity is constant.
Correct answer: Its acceleration vector is directed towards the center of the circle.
In uniform circular motion, the speed is constant, but the velocity is not, because velocity is a vector quantity that includes direction, and the direction is continuously changing. This change in velocity means there is an acceleration. This acceleration, called centripetal acceleration, is always directed radially inward, towards the center of the circle, perpendicular to the object's velocity vector (which is tangent to the circle).
Question 16: æ¥æ¬ã®è£å€æãæã€ãæ³åŸãåœä»€ãªã©ãæ²æ³ã«é©åãããã©ãããæçµçã«å¯©æ»ããæš©éãäœãšåŒã¶ãã
- æ¡çŽæ¿èªæš©
- è¡æ¿æå°æš©
- ç«æ³è£éæš©
- éæ²å¯©æ»æš© (Correct answer)
Correct answer: éæ²å¯©æ»æš©
æ¥æ¬åœæ²æ³ç¬¬81æ¡ã¯ãæé«è£å€æãçµå¯©è£å€æãšããæ³åŸãåœä»€ãªã©ãæ²æ³ã«é©åãããããªãããæ±ºå®ããæš©éãããªãã¡éæ²å¯©æ»æš©ïŒãŸãã¯éæ²ç«æ³å¯©æ»æš©ïŒãäžããŠããŸããããã¯ãæ²æ³ã®çªäººããšããŠã®åžæ³ã®åœ¹å²ã瀺ããã®ã§ãã
Question 17: The water of 100 g at 10 °C is placed in a container that has a heat capacity of 150 J/K and is at temperature t. After sufficient time elapses, the container's temperature changes to 0.0 °C. Also, a portion of the water in the container turns into ice, with the container now holding ice of 5.0 g at 0.0 °C and water of 95 g at 0.0 °C. The specific heat of water is 4.2 J/(g ⥠K), and the heat of fusion of ice is 330 J/g. Assume that there is no exchange of heat with the environment. <br><br> What is t (in °C)?
- -39 (Correct answer)
- -54
- -4.0
- -43
- -21
- -17
Correct answer: -39
Explanation: <br> Given: <br> *Water: 100 g at 10°C <br> *Container heat capacity: 150 J/K <br> *Ice formed: 5 g <br> *Specific heat of water: 4.2 J/(g·K) <br> *Heat of fusion of ice: 330 J/g <br><br> Steps: <br> 1. Heat lost by water cooling to 0°C: 100 à 4.2 à 10 = 4200J <br> 2. Heat to freeze 5 g of water: 5 à 330 = 1650J <br> 3. Total heat lost: 4200 + 1650 = 5850J <br> 4. Heat gained by container: 150 à (0 â t) = â150t <br> 5. Solve for ð¡: <br> â150t = 5850 <br> t = â39
Question 18: There are 6 students. In how many ways can a president, vice-president, and treasurer be chosen from this group, assuming no student can hold more than one office?
- 20
- 18
- 216
- 120 (Correct answer)
Correct answer: 120
This is a permutation problem because the order of selection matters (president, vice-president, and treasurer are distinct positions). The number of ways to arrange 3 students from a group of 6 is calculated as âPâ = 6! / (6-3)! = 6 * 5 * 4 = 120.
Question 19: Japan's heavy dependence on energy imports is primarily caused by:
- International law prohibiting Japan from extracting its offshore resources
- Japan's extremely limited domestic fossil fuel reserves relative to its energy demand (Correct answer)
- The global market making energy imports consistently cheaper than domestic production
- Japan's constitution banning the domestic generation of nuclear power
Correct answer: Japan's extremely limited domestic fossil fuel reserves relative to its energy demand
Japan has very limited domestic coal, oil, and natural gas reserves, forcing it to import the vast majority of its energy to power industry and meet consumer needs.
Question 20: 以äžã®ååç©ã®ãã¡ãäž»ã«ã€ãªã³çµåã«ãã£ãŠåœ¢æãããŠãããã®ã¯ã©ããã
- äºé žåççŽ (COâ)
- æ°Ž (HâO)
- ã¡ã¿ã³ (CHâ)
- å¡©åã«ãªãŠã (KCl) (Correct answer)
Correct answer: å¡©åã«ãªãŠã (KCl)
ã€ãªã³çµåã¯ãäž»ã«éå±å çŽ ãšééå±å çŽ ã®éã§åœ¢æãããŸãããã®çµåã§ã¯ãéå±ååãé»åã倱ã£ãŠéœã€ãªã³ã«ãªããééå±ååãé»åãåãåã£ãŠé°ã€ãªã³ã«ãªããŸãããã®éœã€ãªã³ãšé°ã€ãªã³ã®éã®é黿°çãªåŒåã«ãã£ãŠçµåã圢æãããŸããéžæè¢ã®äžã§ãå¡©åã«ãªãŠã (KCl)ã¯éå±ã§ããã«ãªãŠã (K)ãšééå±ã§ããå¡©çŽ (Cl)ããæ§æãããŠãããããã€ãªã³çµåæ§ã®ååç©ã§ããä»ã®éžæè¢ã¯ãã¹ãŠééå±å çŽ å士ã®å ±æçµåã«ãã£ãŠåœ¢æãããŠããŸãã
Question 21: During Japan's summer monsoon season, weather across most of the country is characterized by:
- Warm, moist air arriving from the Pacific Ocean and Southeast Asia (Correct answer)
- Dry, hot air originating over the Gobi Desert in central Asia
- Cold, dry air flowing in from Siberia to the northwest
- Cold ocean winds driven by the Oyashio Current from the northeast
Correct answer: Warm, moist air arriving from the Pacific Ocean and Southeast Asia
Japan's summer monsoon brings warm, humid air from the Pacific and Southeast Asia, producing the high temperatures and heavy rainfall that characterize the JuneâSeptember rainy season.
Question 22: Find the magnitude of the vector <2, -3>.
- â11
- â-4
- 13
- â13 (Correct answer)
Correct answer: â13
Explanation: <br> The magnitude of a vector is calculated by taking the square root of the sum of the squares of its components. In this case, the vector has a magnitude of â(2^2 + (-3)^2) = â(4 + 9) = â13. Therefore, the correct answer is â13.
Question 23: Which sentence correctly uses the ãŠ-form of a verb to connect two actions in Japanese?
- é£ã¹ããå¯ãŸãã
- é£ã¹ãŠãå¯ãŸãã (Correct answer)
- é£ã¹ããå¯ãã
- é£ã¹ããå¯ãŸãã
Correct answer: é£ã¹ãŠãå¯ãŸãã
The ãŠ-form (é£ã¹ãŠ) connects sequential actions, meaning 'I eat and then sleep.'
Question 24: The graph of the quadratic function y = ax² + bx + c opens downwards and has two distinct x-intercepts. Which of the following must be true?
- a > 0 and b² - 4ac > 0
- a > 0 and b² - 4ac < 0
- a < 0 and b² - 4ac < 0
- a < 0 and b² - 4ac > 0 (Correct answer)
Correct answer: a < 0 and b² - 4ac > 0
For a quadratic function y = ax² + bx + c, the graph opens downwards if the leading coefficient 'a' is negative (a < 0). The number of x-intercepts is determined by the discriminant, Π= b² - 4ac. For two distinct x-intercepts, the discriminant must be positive (b² - 4ac > 0). Therefore, both a < 0 and b² - 4ac > 0 must be true.
Question 25: 16äžçŽåã°ããã«ãã¬ã«åäººãæ¥æ¬ã«æ¥èªãããåè®è²¿æããšåŒã°ãã貿æãšæå亀æµã®æä»£ãå§ãŸããŸããããã®ææã«ãã«ãã¬ã«äººã«ãã£ãŠæ¥æ¬ã«ããããããæ¥æ¬ã®æŠãæ¹ãæ¿æ²»ã«å€§ããªåœ±é¿ãäžããæãéèŠãªæè¡ã¯äœãã
- ç«çžéïŒéç ²ïŒã (Correct answer)
- èžæ°æ©é¢ã
- çŸ éç€ã
- 掻çå°å·è¡ã
Correct answer: ç«çžéïŒéç ²ïŒã
1543幎ã«ãã«ãã¬ã«äººã«ãã£ãŠéç ²ïŒç«çžéïŒãäŒæ¥ããããšã¯ãæ¥æ¬ã®æŠãæ¹ãæ ¹æ¬çã«å€ããŸãããç¹ç°ä¿¡é·ã®ããã«éç ²ã®å°å ¥ãšè£œé ã«æåãã倧åã¯ãè»äºçã«å€§ããªåªäœæ§ãåŸãããšãã§ãããããæŠåœæä»£ã®çµçãšæ¥æ¬ã®çµ±äžããã»ã¹ã®éèŠãªèŠå ãšãªããŸããã
Question 26: A sound wave has a frequency of 500 Hz and travels at 340 m/s in air. What is its wavelength?
- 170 m
- 6.8 m
- 0.068 m
- 0.68 m (Correct answer)
Correct answer: 0.68 m
Using v = fλ, λ = v/f = 340/500 = 0.68 m.
Question 27: Which Japanese city is located on the island of Hokkaido?
- Fukuoka
- Osaka
- Nagoya
- Sapporo (Correct answer)
Correct answer: Sapporo
Sapporo is Japan's fifth-largest city and the capital of Hokkaido Prefecture, situated on Japan's northernmost main island.
Question 28: What does Faraday's Law of electromagnetic induction state?
- A current creates a magnetic field around the conductor
- An EMF is induced in a conductor when the magnetic flux through it changes (Correct answer)
- Electric field lines point from negative to positive charge
- Like charges repel and unlike charges attract
Correct answer: An EMF is induced in a conductor when the magnetic flux through it changes
Faraday's Law states that the induced EMF in a circuit is proportional to the rate of change of magnetic flux through the circuit.
Question 29: 次ã®ç©è³ªã®ãã¡ãååéã«æ°ŽçŽ çµåã圢æããã®ã¯ã©ããã
- ç¡«åæ°ŽçŽ (HâS)
- ã¡ã¿ã³ (CHâ)
- å¡©åæ°ŽçŽ (HCl)
- ããåæ°ŽçŽ (HF) (Correct answer)
Correct answer: ããåæ°ŽçŽ (HF)
æ°ŽçŽ çµåã¯ã黿°é°æ§åºŠã®éåžžã«å€§ããååïŒããçŽ Fãé žçŽ OãçªçŽ NïŒã«çŽæ¥çµåããæ°ŽçŽ ååããè¿ãã«ããå¥ã®ååã®FãOãNååãšã®éã«çãã匷ãååéåã§ããéžæè¢ã®äžã§ãããåæ°ŽçŽ ïŒHFïŒã¯æ°ŽçŽ ååã黿°é°æ§åºŠã®æã倧ããããçŽ ååã«çµåããŠãããããååéã§åŒ·ãæ°ŽçŽ çµåã圢æããŸããããã«ãããHFã¯ååéãè¿ãä»ã®ããã²ã³åæ°ŽçŽ ïŒHClãªã©ïŒã«æ¯ã¹ãŠç°åžžã«é«ã沞ç¹ãæã¡ãŸãã
Question 30: æ¥æ¬ã®åœäŒã«ããããè¡è°é¢ã®åªè¶ãã«é¢ããèšè¿°ãšããŠãæ£ãããªããã®ã¯ã©ããã
- å é£ç·ç倧è£ã®æåã¯ãè¡è°é¢ã®è°æ±ºãåªå ãããã
- äºç®ã¯ãå ã«è¡è°é¢ã«æåºãããªããã°ãªããªãã
- æ³åŸæ¡ãè¡è°é¢ã§å¯æ±ºåŸãåè°é¢ã§åŠæ±ºãããå Žåããã®æ³åŸæ¡ã¯çŽã¡ã«å»æ¡ãšãªãã (Correct answer)
- æ¡çŽã®æ¿èªã«ã€ããŠãäž¡è°é¢ã®è°æ±ºãç°ãªã£ãå Žåãè¡è°é¢ã®è°æ±ºãåœäŒã®è°æ±ºãšãªãã
Correct answer: æ³åŸæ¡ãè¡è°é¢ã§å¯æ±ºåŸãåè°é¢ã§åŠæ±ºãããå Žåããã®æ³åŸæ¡ã¯çŽã¡ã«å»æ¡ãšãªãã
æ³åŸæ¡ãåè°é¢ã§åŠæ±ºãããŠããè¡è°é¢ãåºåžè°å¡ã®3åã®2以äžã®å€æ°ã§åã³å¯æ±ºããã°ããã®æ³åŸæ¡ã¯æ³åŸãšãªããŸãïŒæ²æ³ç¬¬59æ¡ïŒããããã£ãŠãçŽã¡ã«å»æ¡ãšãªãããã§ã¯ãããŸããããããè¡è°é¢ã®åªè¶ãèªããããŠããç¹ã®äžã€ã§ãã
Question 31: è¡è°é¢ã§å é£äžä¿¡ä»»æ±ºè°æ¡ã坿±ºãããå Žåãå é£ããšãã¹ã察å¿ãšããŠãæ²æ³äžå®ããããŠãããã®ã¯æ¬¡ã®ãã¡ã©ããã
- åœæ°æç¥šã宿œããŠãå é£ã®ä¿¡ä»»ãåããªããã°ãªããªãã
- çŽã¡ã«åè°é¢ã®ä¿¡ä»»ãåããªããã°ãªããªãã
- æé«è£å€æã«æ±ºè°ã®ç¡å¹ã蚎ããªããã°ãªããªãã
- 10æ¥ä»¥å ã«è¡è°é¢ãè§£æ£ããããç·èŸè·ããªããã°ãªããªãã (Correct answer)
Correct answer: 10æ¥ä»¥å ã«è¡è°é¢ãè§£æ£ããããç·èŸè·ããªããã°ãªããªãã
æ¥æ¬åœæ²æ³ç¬¬69æ¡ã¯ãè¡è°é¢ã§äžä¿¡ä»»ã®æ±ºè°æ¡ã坿±ºãããšããå é£ã¯10æ¥ä»¥å ã«è¡è°é¢ãè§£æ£ããªãéããç·èŸè·ããªããã°ãªããªããšå®ããŠããŸããããã¯è°é¢å é£å¶ã®éèŠãªååã§ãã
Question 32: ããçç©ã®ç¹å®ã®åœ¢è³ªã決å®ããéºäŒåã®çµã¿åãããäœãšåŒã¶ãã
- ã²ãã
- éºäŒåå (Correct answer)
- 察ç«éºäŒå
- 衚çŸå
Correct answer: éºäŒåå
éºäŒååïŒgenotypeïŒã¯ãçç©ãæã€ç¹å®ã®åœ¢è³ªã«é¢ããéºäŒåã®æ§æãã€ãŸã察ç«éºäŒåã®çµã¿åãããæããäžæ¹ã衚çŸåïŒphenotypeïŒã¯ããã®éºäŒååãšç°å¢èŠå ã«ãã£ãŠå®éã«çŸããå€èŠäžã®ç¹åŸŽãæ§è³ªã®ããšã§ããã
Question 33: On the EJU Japanese test, what is the approximate recommended length for the äœæ essay?
- 50â100 characters
- 400â500 characters
- 200â300 characters
- 800â1000 characters (Correct answer)
Correct answer: 800â1000 characters
The EJU äœæ section typically requires essays of approximately 800 to 1000 Japanese characters to adequately demonstrate writing ability.
Question 34: What type of wave is sound?
- Standing wave
- Transverse wave
- Longitudinal wave (Correct answer)
- Electromagnetic wave
Correct answer: Longitudinal wave
Sound is a longitudinal wave because the particles in the medium vibrate parallel to the direction of wave propagation.
Question 35: Innate behaviors and learned behaviors are two categories of animal behavior. From the choices below, choose the answer that best represents an example of learned behaviors.
- The sea hare retracts its gill when a tactile stimulus is applied to its siphon. However, when the stimulus is applied repeatedly, the sea hare stops retracting its gill. (Correct answer)
- During breeding season, male three-spined sticklebacks (a freshwater fish) attack other red-bellied males that enter their territory, but do not attack females whose abdomen is swollen with eggs.
- As exemplified by how earthworms move away from light, some animals move in a certain direction in response to a specific stimulus, such as light or a chemical substance.
- Humans reflexively draw back their hands when their fingers touch something hot.
- Male silkmoths are attracted by a pheromone to locate females.
Correct answer: The sea hare retracts its gill when a tactile stimulus is applied to its siphon. However, when the stimulus is applied repeatedly, the sea hare stops retracting its gill.
Explanation: <br> Learned behaviors are those that an animal acquires through experience or interaction with the environment. In this case, the sea hare initially responds reflexively to the tactile stimulus by retracting its gill. However, with repeated exposure to the same stimulus, the sea hare learns not to retract its gill, indicating an adaptive change in behavior based on experience.
Question 36: ã¡ã³ãã«ã®éºäŒã®æ³åã«é¢ããå®éšã§ãäžžãçš®åïŒé¡æ§ïŒã®çŽç³»ãšããã®ããçš®åïŒæœæ§ïŒã®çŽç³»ã亀é ããŠF1ïŒåäžä»£ïŒãåŸããæ¬¡ã«ããã®F1ãèªå®¶å粟ãããŠF2ïŒå«äžä»£ïŒãåŸããF2ã«ãããäžžãçš®åãšããã®ããçš®åã®è¡šçŸåã®å颿¯ãšããŠãæãé©åãªãã®ã¯ã©ããã
- äžžïŒãã = 2ïŒ1
- äžžïŒãã = 1ïŒ3
- äžžïŒãã = 3ïŒ1 (Correct answer)
- äžžïŒãã = 1ïŒ1
Correct answer: äžžïŒãã = 3ïŒ1
顿§ã®æ³åã«ãããF1äžä»£ã¯ãã¹ãŠäžžãçš®åïŒéºäŒååã¯ãããæ¥åïŒãšãªããåé¢ã®æ³åã«ããã°ãF1ãäœãé å¶åã¯é¡æ§éºäŒåãšæœæ§éºäŒåã1:1ã®æ¯ã§æã€ãF1ã®èªå®¶å粟ã«ãããF2äžä»£ã§ã¯éºäŒååã1:2:1ïŒé¡æ§ãã¢ïŒãããïŒæœæ§ãã¢ïŒã®æ¯ã§çããããã®çµæã衚çŸåã¯äžžãçš®åïŒé¡æ§ïŒãšããã®ããçš®åïŒæœæ§ïŒã3:1ã®æ¯ã§çŸããã
Question 37: çŸåšã®æ¥æ¬ã®è¡è°é¢è°å¡éžæã§æ¡çšãããŠããéžæå¶åºŠã®åç§°ãšããŠãæãé©åãªãã®ã¯ã©ããã
- å šåœæ¯äŸä»£è¡šå¶
- å®å šé£åå¶
- å°éžæåºæ¯äŸä»£è¡šäžŠç«å¶ (Correct answer)
- å€§éžæåºå¶
Correct answer: å°éžæåºæ¯äŸä»£è¡šäžŠç«å¶
çŸåšã®è¡è°é¢è°å¡éžæã¯ãäžã€ã®éžæåºããäžäººã®è°å¡ãéžã¶ãå°éžæåºå¶ããšãå šåœã11ã®ãããã¯ã«åããŠæ¿å ã®åŸç¥šæ°ã«å¿ããŠè°åžãé åãããæ¯äŸä»£è¡šå¶ããçµã¿åããããå°éžæåºæ¯äŸä»£è¡šäžŠç«å¶ããæ¡çšãããŠããŸãã
Question 38: Ohm's Law states that the current through a conductor is:
- Directly proportional to resistance and inversely proportional to voltage
- Directly proportional to the voltage and inversely proportional to the resistance (Correct answer)
- Equal to the product of voltage and resistance
- Independent of voltage
Correct answer: Directly proportional to the voltage and inversely proportional to the resistance
Ohm's Law: I = V/R, meaning current equals voltage divided by resistance.
Question 39: When writing an EJU essay arguing for a position, what technique strengthens the argument?
- Providing specific examples and reasons to support the main claim (Correct answer)
- Using as many kanji as possible
- Avoiding any personal opinion
- Writing only general statements without specifics
Correct answer: Providing specific examples and reasons to support the main claim
Strong EJU essays are characterized by a clear thesis supported by specific examples and logical reasons rather than vague generalizations.
Question 40: AåœãšBåœããããããåŽåè 1人ããã1æ¥ã«çç£ã§ããç±³ãšèªåè»ã®éã以äžã®è¡šã®éãã§ãããšãããããŽã£ããã»ãªã«ãŒãã®æ¯èŒçç£è²»èª¬ã«åºã¥ããå Žåãã©ã®ãããªåæ¥ã»è²¿æãè¡ãããã®ãæãåççãã | | ç±³ | èªåè» | |:---:|:---:|:---:| | Aåœ | 10åäœ | 2å° | | Båœ | 8åäœ | 4å° |
- Aåœãç±³ãBåœãèªåè»ãçç£ããŠè²¿æããã (Correct answer)
- Aåœãèªåè»ãBåœãç±³ãçç£ããŠè²¿æããã
- äž¡åœãšãã«äž¡æ¹ãçç£ãã貿æã¯è¡ããªãã
- Aåœãäž¡æ¹ã®çç£ã«ç¹åããBåœã«èŒžåºããã
Correct answer: Aåœãç±³ãBåœãèªåè»ãçç£ããŠè²¿æããã
æ¯èŒçç£è²»èª¬ã§ã¯ãå財ãçç£ããããã®æ©äŒè²»çšãããå°ããåœããã®è²¡ã®çç£ã«æ¯èŒåªäœãæã€ãšèããŸããAåœãèªåè»1å°ãçç£ããæ©äŒè²»çšã¯ç±³5åäœïŒ10/2ïŒã§ããBåœãèªåè»1å°ãçç£ããæ©äŒè²»çšã¯ç±³2åäœïŒ8/4ïŒã§ãããããã£ãŠãBåœã¯èªåè»ã®çç£ã«æ¯èŒåªäœããããŸããäžæ¹ãAåœãç±³1åäœãçç£ããæ©äŒè²»çšã¯èªåè»0.2å°ïŒ2/10ïŒã§ããBåœãç±³1åäœãçç£ããæ©äŒè²»çšã¯èªåè»0.5å°ïŒ4/8ïŒã§ãããããã£ãŠãAåœã¯ç±³ã®çç£ã«æ¯èŒåªäœããããŸãããã£ãŠãAåœãç±³ãBåœãèªåè»ã«ç¹åããŠçç£ãã貿æããããšãåæ¹ã«ãšã£ãŠåççã§ãã
Question 41: çç©ã®é²åã®èšŒæ ãšãããçžååšå®ã«é¢ããèšè¿°ãšããŠãæãé©åãªãã®ã¯ã©ããã
- ããã®è ãšã³ãŠã¢ãªã®ç¿Œã®ããã«ãèµ·æºã¯åãã ãçŸåšã®åœ¢ãæ©èœãç°ãªãåšå®ã (Correct answer)
- ããã®å°ŸãŠã骚ã®ããã«ãç¥å ã§ã¯æ©èœããŠãããçŸåšã§ã¯æ©èœã倱ã£ãŠããåšå®ã
- é³¥ã®ç¿Œãšæè«ã®ç¿ ã®ããã«ãèµ·æºã¯ç°ãªããåããããªæ©èœãæã€åšå®ã
- åãç°å¢ã«é©å¿ããçµæãç°ãªãçš®ã®çç©ã䌌ããããªåœ¢è³ªãæã€ããšã
Correct answer: ããã®è ãšã³ãŠã¢ãªã®ç¿Œã®ããã«ãèµ·æºã¯åãã ãçŸåšã®åœ¢ãæ©èœãç°ãªãåšå®ã
çžååšå®ãšã¯ãå ±éã®ç¥å ããé²åããçç©éã§ãåºæ¬çãªæ§é ãçºçã®èµ·æºãåãã§ããããçŸåšã®æ©èœã圢æ ãç°ãªã£ãŠããåšå®ã®ããšã§ãããããã®è ãã³ãŠã¢ãªã®ç¿Œãã¯ãžã©ã®ãã¬ãªã©ã¯ãéªšæ Œã®åºæ¬æ§é ãå ±éããŠããããã¹ãŠçžååšå®ã®äŸã§ããã
Question 42: Japan became a major industrial power despite limited natural resources primarily through:
- Importing raw materials and energy, adding value through skilled manufacturing, and exporting finished goods (Correct answer)
- Discovering large offshore oil reserves in the 1950s that funded rapid industrialization
- Developing unique renewable energy technologies before other industrialized nations
- Exploiting colonial territories across Asia to supply raw materials through the mid-20th century
Correct answer: Importing raw materials and energy, adding value through skilled manufacturing, and exporting finished goods
Japan's economic model centers on importing raw materials (iron ore, coal, petroleum) and energy, processing them with skilled labor and advanced technology, and exporting high-value manufactured products.
Question 43: What is the difference between alternating current (AC) and direct current (DC)?
- AC flows in one direction; DC periodically reverses
- AC periodically reverses direction; DC flows in one constant direction (Correct answer)
- AC is used only in batteries; DC is used in power lines
- AC has higher voltage; DC has lower voltage
Correct answer: AC periodically reverses direction; DC flows in one constant direction
In AC, the current direction alternates periodically, while in DC the current flows continuously in one direction.
Question 44: In an EJU essay, which conjunction best introduces a contrasting idea in formal Japanese writing?
- ãããŠ
- ã ãã
- ããã (Correct answer)
- ãŸã
Correct answer: ããã
ããã means 'however' and is the standard formal conjunction for introducing contrasting ideas.
Question 45: From the choices below, choose the statement that correctly describes carbon dioxide assimilation by cyanobacteria, such as Nostoc:
- They use energy released from the oxidization of inorganic substances such as ammonium ions.
- They use a photosynthetic pigment called bacteriochlorophyll.
- They take up hydrogen sulfide to perform photosynthesis.
- They produce oxygen by splitting water. (Correct answer)
- They have chloroplasts and perform the same type of photosynthesis as land plants.
Correct answer: They produce oxygen by splitting water.
Explanation: <br> Cyanobacteria, including Nostoc, are photosynthetic organisms that utilize water as a source of electrons and protons in the process of photosynthesis. During this process, they split water molecules (H2O) to release oxygen (O2) as a byproduct. This oxygenic photosynthesis is similar to that of plants and algae.
Question 46: ïŒé³å£°ïŒ ã©ãžãªã®å€©æ°äºå ±ã§ãã ã颿±å°æ¹ã®é±æ«ã®å€©æ°ããäŒãããŸããåææ¥ã¯ãååäžã¯ããæŽããŸãããååŸã«ãªããšé²ãåºããããããªãã§ãããã倿¹ããã¯æã«ãããã«ããéšãé·éšã«æ³šæãå¿ èŠã§ãããåºããã®éã¯ãæãç³ã¿åããããšå®å¿ã§ããæ¥ææ¥ã¯ãæãããã£ãããšæŽããŠã絶奜ã®è¡æ¥œæ¥åãšãªãããã§ããæ°æž©ãåææ¥ããäžãããå€ã®ãããªæãã«ãªãã§ããããã ïŒè³ªåïŒ ãã®å€©æ°äºå ±ã«ãããšãæ£ãããã®ã¯ã©ãã§ããã
- 鱿«ã¯äž¡æ¥ãšãéšãéãå¯èœæ§ãããã
- æ¥ææ¥ã¯åææ¥ããæ¶Œãããªãã
- åææ¥ã«å€åºãããªãåããã£ãã»ããããã (Correct answer)
- åææ¥ã®ååŸã¯æŽå€©ãç¶ãã
Correct answer: åææ¥ã«å€åºãããªãåããã£ãã»ããããã
ã¢ããŠã³ãµãŒã¯åææ¥ã®å€©æ°ã«ã€ããŠãã倿¹ããã¯æã«ãããã«ããéšãé·éšã«æ³šæãå¿ èŠããšèšããããåºããã®éã¯ãæãç³ã¿åããããšå®å¿ã§ãããšä»ãå ããŠããŸãããããã£ãŠãåææ¥ã«åãæã£ãŠããããšãæšå¥šããŠãããã®éžæè¢ãæ£ããã§ãã
Question 47: ææ²»ç¶æ°æã«å®æœãããè¿ä»£åæ¿çã«é¢ããèšè¿°ãšããŠãæ£ãããªããã®ã¯æ¬¡ã®ãã¡ã©ããã
- å€§æ¥æ¬åžåœæ²æ³ãçºåžããåžåœè°äŒãéèšã
- ããªã¹ãæã®çŠæã匷åããéåœæ¿çãåå°å ¥ã (Correct answer)
- åœæ°çå µãååãšããåŸŽå µä»€ã®å¶å®ã
- è©ã廿¢ããŠçã眮ãå»è©çœ®çã®æè¡ã
Correct answer: ããªã¹ãæã®çŠæã匷åããéåœæ¿çãåå°å ¥ã
ææ²»ç¶æ°ã¯ãæ¥æ¬ã®éåœãšæ¥éãªè¥¿æ¬§åãç¹åŸŽãšããæä»£ã§ãããéåœæ¿çã¯ãããã«å ç«ã€åŸ³å·å¹åºã®ä»£è¡šçãªæ¿çã§ãããããªãŒæç£ã®æ¥èªããã£ããã«çµãããè¿ããŸãããããã¯ææ²»ç¶æ°ãåŒãèµ·ãããéèŠãªåºæ¥äºã§ããä»ã®éžæè¢ã¯ãã¹ãŠãææ²»æä»£ã®äžå¿çãªæ¹é©ã§ãã
Question 48: ïŒé³å£°ïŒ ç·ã®äººãšå¥³ã®äººãã¢ã«ãã€ãã«ã€ããŠè©±ããŠããŸãã 女ïŒå èŒ©ãæ°ããã¢ã«ãã€ãæ¢ããŠããã§ããã ç·ïŒãããä»ãã£ãŠãã³ã³ããã®ãã€ããæçµŠã¯ãããã ãã©ãå€ã®ã·ãããå€ããŠãæè¿ã¡ãã£ãšãã€ããŠãã 女ïŒãããªãã§ãããããããæŒéã®ä»äºãããã§ããã ç·ïŒããã倧åŠããè¿ããšããã§ãäœãããã®ãªãããªã£ãŠæã£ãŠãææ¥ã®åéã«åãããšäžçªãããã ãã©ã 女ïŒãããªãã倧åŠã®åã®ã«ãã§ã¯ã©ãã§ãããæè¿ãåéã®è²ŒãçŽãåºãŠãŸãããã倧åŠããããã ããæŒéã ãåããã£ãŠæžããŠãããŸããã ç·ïŒãžããæ¬åœïŒããã¯ããããææ¥ãæ©éèŠãŠã¿ããã ïŒè³ªåïŒ ç·ã®äººãæ°ããã¢ã«ãã€ãã«æ±ããæ¡ä»¶ã¯äœã§ããã
- ã³ã³ãããšã³ã¹ã¹ãã¢ã§ã®ä»äºã§ããããšã
- å€ã®æé垯ã«åããããšã
- 倧åŠã®è¿ãã§ãæŒéã«åããããšã (Correct answer)
- æçµŠãé«ãããšã
Correct answer: 倧åŠã®è¿ãã§ãæŒéã«åããããšã
ç·ã®äººã¯çŸåšã®ã¢ã«ãã€ãããå€ã®ã·ãããå€ããŠãã€ãããšèšããæ°ããã¢ã«ãã€ãã®æ¡ä»¶ãšããŠã倧åŠããè¿ããšãããã§ãææ¥ã®åéã«åãããã€ãŸãæŒéã«åããããšãæãã§ããŸãããã®äž¡æ¹ã®æ¡ä»¶ãæºãããŠããã®ããã®éžæè¢ã§ãã
Question 49: The phenomenon where light bends as it passes from one medium to another is called:
- Refraction (Correct answer)
- Reflection
- Diffraction
- Absorption
Correct answer: Refraction
Refraction is the bending of a wave as it crosses the boundary between two media with different wave speeds.
Question 50: Which of the following statements is true about the relationship between the graph of a function y = f(x) and its inverse function y = fâ»Â¹(x)?
- They are reflections of each other across the x-axis.
- They are reflections of each other across the y-axis.
- They are reflections of each other across the origin.
- They are reflections of each other across the line y = x. (Correct answer)
Correct answer: They are reflections of each other across the line y = x.
The graph of a function and its inverse are always symmetric with respect to the line y = x. This is because if a point (a, b) is on the graph of f(x), then the point (b, a) must be on the graph of fâ»Â¹(x). The line y = x is the perpendicular bisector of the segment connecting these two points.
Question 51: The vector aâ = (6, 8). What is the unit vector in the direction of aâ?
- (6/10, 8/10)
- (3/10, 4/10)
- (1/â100, 1/â100)
- (3/5, 4/5) (Correct answer)
Correct answer: (3/5, 4/5)
|aâ| = â(36 + 64) = â100 = 10. Unit vector = aâ/|aâ| = (6/10, 8/10) = (3/5, 4/5).
Question 52: 次ã®å çŽ ã®ãã¡ã第äžã€ãªã³åãšãã«ã®ãŒãæã倧ãããã®ã¯ã©ããã
- ããªãŠã (He) (Correct answer)
- ã«ãªãŠã (K)
- ãããªãŠã (Na)
- ãªããŠã (Li)
Correct answer: ããªãŠã (He)
第äžã€ãªã³åãšãã«ã®ãŒã¯ãååããé»åã1ååãå»ãã®ã«å¿ èŠãªãšãã«ã®ãŒã§ããåšæè¡šã«ãããŠã第äžã€ãªã³åãšãã«ã®ãŒã¯äžè¬ã«åšæã®å³ã«è¡ãã»ã©ããŸãæã®äžã«è¡ãã»ã©å€§ãããªãåŸåããããŸããããªãŠã (He)ã¯åšæè¡šã®æãå³äžã«äœçœ®ããåžã¬ã¹å çŽ ã§ãããéåžžã«å®å®ããé»åé 眮ãæã€ãããé»åãåãå»ãã®ã極ããŠå°é£ã§ãããããã£ãŠããªã¹ããããå çŽ ã®äžã§ç¬¬äžã€ãªã³åãšãã«ã®ãŒãæã倧ãããªããŸãã
Question 53: What type of electromagnetic wave has the highest frequency?
- Ultraviolet rays
- Gamma rays (Correct answer)
- Radio waves
- X-rays
Correct answer: Gamma rays
Gamma rays have the highest frequency (and shortest wavelength) in the electromagnetic spectrum.
Question 54: Which of the following best explains the high frequency of earthquakes and volcanic eruptions in the Asia-Pacific region, including Japan?
- The region contains an unusually high concentration of radioactive minerals that heat the crust
- Multiple major tectonic plates converge around the Pacific Ocean basin, creating the Ring of Fire (Correct answer)
- Strong ocean currents in the Pacific generate enormous pressure on the ocean floor
- The region's dense population increases cumulative stress on the Earth's crust over time
Correct answer: Multiple major tectonic plates converge around the Pacific Ocean basin, creating the Ring of Fire
The Pacific Ring of Fire is defined by the convergence of multiple tectonic plates â including the Pacific, Philippine, Eurasian, and North American plates â producing intense seismic and volcanic activity.
Question 55: VSEPRçè«ïŒåå䟡殻é»å察åçºåïŒã«åºã¥ããšãã¡ã¿ã³ïŒCHâïŒååã®ç«äœæ§é ã¯äœãã
- å¹³é¢äžè§åœ¢
- çŽç·åœ¢
- äžè§é圢
- æ£åé¢äœåœ¢ (Correct answer)
Correct answer: æ£åé¢äœåœ¢
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Question 56: If v =â©a,bâª, then a is the ___________ component of v.
- Parallel
- Slope
- Horizontal (Correct answer)
- Vertical
Correct answer: Horizontal
Explanation: <br> If v = â©a,bâª, then a is the horizontal component of v. This is because, in a two-dimensional Cartesian coordinate system, the x-axis represents the horizontal direction. The vector v = â©a,b⪠represents a displacement in the x-axis (horizontal direction) of units and in the y-axis (vertical direction) of b units. Therefore, a represents the displacement in the horizontal direction, making it the horizontal component of v.
Question 57: Someone wants to know the inclination angle of a street. He notices that the bricks in a fence are horizontal with respect to the street and that the horizontal distance from a point is 35 cm. From there, downward, the brick measures 6 cm of vertical distance toward the street. What is the inclination angle?
- 80°16â20â
- 10°19Ž20"
- 12° 13â12â
- 9°43ÂŽ39.28â (Correct answer)
Correct answer: 9°43ÂŽ39.28â
Explanation: <br> The correct answer of 9°43ÂŽ39.28â can be explained by using the concept of trigonometry. The problem provides the horizontal distance (35 cm) and the vertical distance (6 cm) of the brick from a point. By using the tangent function, we can calculate the angle of inclination. The tangent of an angle is equal to the ratio of the opposite side (vertical distance) to the adjacent side (horizontal distance). In this case, the tangent of the angle is 6 cm / 35 cm. By taking the inverse tangent (arctan) of this ratio, we can find the angle of inclination, which is approximately 9°43ÂŽ39.28â.
Question 58: Two resistors of 4Ω and 6Ω are connected in parallel. What is the total resistance?
- 24Ω
- 10Ω
- 5Ω
- 2.4Ω (Correct answer)
Correct answer: 2.4Ω
For parallel resistors, 1/R = 1/4 + 1/6 = 5/12, so R = 12/5 = 2.4Ω.
Question 59: If sin Ξ = 3/5 and 0 < Ξ < Ï/2, what is tan Ξ?
- 5/3
- 3/5
- 4/3
- 3/4 (Correct answer)
Correct answer: 3/4
In a right triangle, if sin Ξ = 3/5, then the opposite side is 3 and hypotenuse is 5. By the Pythagorean theorem, adjacent = 4. So tan Ξ = opposite/adjacent = 3/4.
Question 60: In Japanese, the grammar pattern ããªããã°ãªããªã is used to express which meaning?
- Obligation or necessity (Correct answer)
- Permission
- Prohibition
- Desire
Correct answer: Obligation or necessity
ããªããã°ãªããªã expresses obligation or necessity, equivalent to 'must' or 'have to' in English.
Question 61: A 2 kg object, initially at rest on a frictionless horizontal surface, is subjected to a constant horizontal force of 10 N. What is the kinetic energy of the object after it has been displaced by 4 m?
- 20 J
- 10 J
- 40 J (Correct answer)
- 80 J
Correct answer: 40 J
According to the work-energy theorem, the net work done on an object is equal to the change in its kinetic energy (W_net = ÎKE). The work done (W) by the constant force (F) over a displacement (d) is calculated as W = F Ã d. Here, W = 10 N Ã 4 m = 40 J. Since the object starts from rest, its initial kinetic energy is zero. Therefore, the final kinetic energy is equal to the work done, which is 40 J.
Question 62: What is the SI unit of electric charge?
- Coulomb (C) (Correct answer)
- Ohm (Ω)
- Ampere (A)
- Volt (V)
Correct answer: Coulomb (C)
The Coulomb (C) is the SI unit of electric charge, where one Coulomb equals the charge carried by approximately 6.24 Ã 10^18 electrons.
Question 63: èµ€ç·è²èŠç°åžžã¯Xæè²äœäžã®æœæ§éºäŒåã«ãã£ãŠèµ·ãã䌎æ§éºäŒã§ãããç¶èŠªãèµ€ç·è²èŠç°åžžã§ãæ¯èŠªããã®éºäŒåãæããªãïŒæ£åžžãªïŒå ŽåãçãŸããŠããç·ã®åãèµ€ç·è²èŠç°åžžã§ãã確çã¯äœ%ãã
- 50%
- 0% (Correct answer)
- 100%
- 25%
Correct answer: 0%
ç·ã®åã¯æ¯èŠªããXæè²äœããç¶èŠªããYæè²äœãåãç¶ãããã®å Žåãæ¯èŠªã¯èµ€ç·è²èŠç°åžžã®éºäŒåãæããªãæ£åžžãªXæè²äœããæã£ãŠããªãããããã£ãŠãæ¯èŠªããåãç¶ãXæè²äœã¯å¿ ãæ£åžžãªãã®ã§ãããããçãŸããŠããç·ã®åãèµ€ç·è²èŠç°åžžã«ãªãããšã¯ãªãã確çã¯0%ã§ããã
Question 64: ç¬¬äºæ¬¡äžç倧æŠåŸã®åœéçµæžäœå¶ãæ¯ãããã¬ãã³ã»ãŠããºäœå¶ã®äžã§èšç«ãããåœéæ©é¢ã«é¢ããèšè¿°ãšããŠãåœéé貚åºéïŒIMFïŒã®äž»ãªåœ¹å²ãæããã説æããŠãããã®ã¯ã©ããã
- å çåœãäžæçãªåœé忝ã®å±æ©ã«é¥ã£ãéã«ãçæçãªè³éãèè³ããã (Correct answer)
- éçºéäžåœã®é·æçãªéçºãããžã§ã¯ãïŒã€ã³ãã©æŽåãªã©ïŒã«å¯ŸããŠèè³ãè¡ãã
- å é²åœéã®çµæžæ¿çã«ã€ããŠåè°ããäžççµæžã®å®å®çæé·ãç®æãçµæžååæ©é¢ã§ããã
- èªç±ã§å€è§çãªè²¿æãä¿é²ãããããé¢çšã®åŒãäžãã貿æéå£ã®æ€å»ã«é¢ãã亀æžã®å ŽãæäŸããã
Correct answer: å çåœãäžæçãªåœé忝ã®å±æ©ã«é¥ã£ãéã«ãçæçãªè³éãèè³ããã
åœéé貚åºéïŒIMFïŒã®äž»ãªåœ¹å²ã¯ãçºæ¿çžå Žã®å®å®ãç®çãšããåœé忝ãèµ€åã«ãªããªã©äžæçãªéè屿©ã«é¥ã£ãå çåœã«å¯ŸããŠçæçãªè³éãèè³ããããšã§ããéžæè¢1ã¯äžçéè¡ïŒIBRDïŒã3ã¯GATTïŒåŸã®WTOïŒã4ã¯çµæžååéçºæ©æ§ïŒOECDïŒã®åœ¹å²ã«è¿ãã§ãã
Question 65: What does the expression ããŠããŸã convey in Japanese?
- An ongoing action
- A polite request
- A conditional statement
- Completion of an action, often with regret or an unintended result (Correct answer)
Correct answer: Completion of an action, often with regret or an unintended result
ããŠããŸã indicates that an action is fully completed, often carrying a nuance of regret or an unintended consequence.
Question 66: A data set has values: 2, 4, 4, 4, 6, 8, 8, 8, 10. What is the standard deviation?
- â8
- 8/3
- 2â3
- â(64/9) (Correct answer)
Correct answer: â(64/9)
Mean = (2+4+4+4+6+8+8+8+10)/9 = 54/9 = 6. Variance = [(16+4+4+4+0+4+4+4+16)/9] = 56/9. Wait â let me recalculate: deviations: -4,-2,-2,-2,0,2,2,2,4; squares: 16,4,4,4,0,4,4,4,16; sum=56; variance=56/9. SD = â(56/9) = 2â(14/9). Closest: the answer is â(56/9).
Question 67: What happens in the human body when the body temperature decreases? From the choices below, choose the statement that is NOT correct.
- Heartbeat is accelerated by the action of the sympathetic nervous system.
- Adrenaline secretion is stimulated.
- Blood vessels in the skin constrict.
- Arrector pili muscles contract.
- Metabolism in the liver and skeletal muscles is inhibited. (Correct answer)
Correct answer: Metabolism in the liver and skeletal muscles is inhibited.
Explanation: <br> When body temperature decreases (hypothermia), the body initiates several responses to maintain warmth and normal physiological function: <br> *Heartbeat is accelerated by the action of the sympathetic nervous system: This helps circulate blood faster to distribute heat. <br> *Adrenaline secretion is stimulated: Adrenaline (epinephrine) increases metabolic rate to generate heat. <br> *Arrector pili muscles contract: This causes goosebumps, which can help trap heat. <br> *Blood vessels in the skin constrict (vasoconstriction): This reduces blood flow to the skin, minimizing heat loss.
Question 68: 以äžã®æç« ãèªãã§ãåŸã®åãã«çããªããã è¿å¹Žãæ¥æ¬ã®éœåžéšã§ã¯ãäœæ°å士ã®äº€æµãç®çãšãããã³ãã¥ããã£ã¹ããŒã¹ããå¢ããŠããããã³ã·ã§ã³ã®å ±çšéšåããå°åã®ç©ºãå®¶ãæ¹è£ ããŠäœãããããšãå€ããããããã¹ããŒã¹ã§ã¯ãåã©ãããé«éœ¢è ãŸã§ãæ§ã ãªäžä»£ã®äººã ãéãŸããã€ãã³ããè¶£å³ã®æŽ»åãéããŠèªç¶ãªäº€æµãçãŸãããèæ¯ã«ã¯ãæ žå®¶æåãéœåžéšãžã®äººå£éäžã«ãããå°å瀟äŒã§ã®äººéé¢ä¿ãåžèã«ãªã£ãããšããããã³ãã¥ããã£ã¹ããŒã¹ã¯ãããããçŸä»£ç€ŸäŒã®åé¡ã«å¯Ÿããäžã€ã®è§£æ±ºçãšããŠæåŸ ãããŠããã ãã®æç« ã«ãããšãã³ãã¥ããã£ã¹ããŒã¹ãå¢ããŠããäž»ãªçç±ã¯äœã§ããã
- æ§ã ãªäžä»£ã®äœæ°éã®äº€æµãä¿ãããã (Correct answer)
- åã©ããã¡ãå®å šã«éã¹ãå ŽæãæäŸããããã
- å°æ¹èªæ²»äœãäŒè°ãéãå Žæã確ä¿ããããã
- å°åã®ç©ºãå®¶åé¡ã解決ããããã
Correct answer: æ§ã ãªäžä»£ã®äœæ°éã®äº€æµãä¿ãããã
The text explicitly states that community spaces are created for the purpose of interaction among residents ("äœæ°å士ã®äº€æµãç®çãšãã"). It also mentions that people of various generations gather there, and that these spaces are a solution to the problem of weakening relationships in the community. Therefore, promoting interaction among different generations of residents is the main reason.
Question 69: ã€ã®ãªã¹ã®ç£æ¥é©åœæã«ãå·¥æ¥å°åž¯ã®ãªãªã·ã¢ããªãšãã·ã£ã¯ïŒèŸïŒã«ãããŠãæè²ã®åäœã®å²åãå¢å ããçŸè±¡ãæããã説æããé²åã®ã¡ã«ããºã ã¯äœãã
- 人çºéžæ
- èªç¶éžæ (Correct answer)
- çªç¶å€ç°
- éºäŒçæµ®å
Correct answer: èªç¶éžæ
ãã®çŸè±¡ã¯ãå·¥æ¥æåããšããŠç¥ãããèªç¶éžæã®å žåçãªäŸã§ãããç£æ¥é©åœã«ããå·¥å Žã®ç €ã§æšã®å¹¹ãé»ããªã£ããããæããè²ã®èŸã¯é³¥ã«æé£ããããããªããæè²ã®èŸãçãæ®ãããããªã£ãããã®çµæãçåãšç¹æ®ã«æå©ãªæè²ã®åœ¢è³ªãæã€åäœãå¢å ãããããã¯ç°å¢ãžã®é©å¿ãèªç¶éžæã«ãã£ãŠåŒãèµ·ããããããšã瀺ããŠããã
Question 70: A bag contains 5 red balls and 3 white balls. If two balls are drawn from the bag at the same time, what is the probability that both balls are red?
- 5/8
- 25/64
- 5/14 (Correct answer)
- 3/14
Correct answer: 5/14
The total number of ways to choose 2 balls from 8 is given by the combination formula âCâ = (8 * 7) / (2 * 1) = 28. The number of ways to choose 2 red balls from 5 is â Câ = (5 * 4) / (2 * 1) = 10. Therefore, the probability is the ratio of favorable outcomes to total outcomes, which is 10/28, simplifying to 5/14.
Question 71: 以äžã®æç« ãèªãã§ãåŸã®åãã«çããªããã æ¥æ¬ã®ããã£ãããªãããšããèšèã¯ãåã«ãç¡é§ã«ããŠã¯ãããªãããšããæå³ã ãã§ã¯ãªããç©ã ãã§ãªããæéãæèœãªã©ããããããã®ãæã€æ¬æ¥ã®äŸ¡å€ãååã«æŽ»ããããŠããªãç¶æ ã«å¯ŸããŠæãããåŸæãç³ãèš³ãªãã®ææ ãå«ãŸããŠãããäŸãã°ããŸã é£ã¹ãããé£åãæšãŠãŠããŸãããšã ãã§ãªãã誰ãã®èœåãçºæ®ãããã«ããç¶æ³ã«å¯ŸããŠãããã£ãããªãããšæããããã®èšèã¯ãç©ãè³æºã倧åã«ããå¿ãšããã®äŸ¡å€ãæå€§éã«åŒãåºãããšãžã®æ¬æã衚ããŠããã çè ã«ãããšãããã£ãããªãããšããèšèãæã€æ·±ãæå³ã¯ã©ãã§ããã
- ç©ã®äŸ¡å€ãæå€§éã«æŽ»ããããŠããªãããšãžã®æ®å¿µãªæ°æã¡ã (Correct answer)
- çŸä»£ç€ŸäŒã§ã¯ãã䜿ãããªããªã£ãå€ãç¿æ £ã
- ãéãç¯çŽããããã®åãªãã«ãŒã«ã
- ãã¿ãåºããããªãããã«ããããã®æ³åŸã
Correct answer: ç©ã®äŸ¡å€ãæå€§éã«æŽ»ããããŠããªãããšãžã®æ®å¿µãªæ°æã¡ã
The passage explains that 'mottainai' is not just about 'not wasting' but includes a feeling of regret or sorrow when the inherent value of something (things, time, talent) is not fully utilized ("æ¬æ¥ã®äŸ¡å€ãååã«æŽ»ããããŠããªãç¶æ ã«å¯ŸããŠæãããåŸæãç³ãèš³ãªãã®ææ "). This matches the idea of feeling regret that something's value is not being maximized.
Question 72: The Japanese honorific system (æ¬èª) used in formal writing includes which three main categories?
- äžå¯§èª, 話ãèšè, æžãèšè
- æ®éèª, æ¬èª, äžèª
- å°æ¬èª, è¬è²èª, äžå¯§èª (Correct answer)
- æ¬èª, ã«ã¿ã«ãèª, 挢èª
Correct answer: å°æ¬èª, è¬è²èª, äžå¯§èª
Japanese honorific speech (æ¬èª) is divided into respectful language (å°æ¬èª), humble language (è¬è²èª), and polite language (äžå¯§èª).
Question 73: What does the grammar pattern ãããšãã§ãã express in Japanese?
- Prohibition
- Past experience
- Obligation
- Ability or possibility (Correct answer)
Correct answer: Ability or possibility
ãããšãã§ãã expresses the ability or possibility to do something, equivalent to 'can' or 'be able to.'
Question 74: 以äžã®æç« ãèªãã§ãåŸã®åãã«çããªããã ãã¬ã¯ãŒã¯ã¯ãé倿éããªããªãããšã§åŸæ¥å¡ã®èªç±ãªæéãå¢ããã¯ãŒã¯ã©ã€ããã©ã³ã¹ã®åäžã«ç¹ãããšããå©ç¹ãããããŸããäŒæ¥ã«ãšã£ãŠãããªãã£ã¹ã®å ç±è²»ã亀éè²»ã®æ¯çµŠãåæžã§ããã¡ãªããã¯å€§ãããããããäžæ¹ã§èª²é¡ãååšããããã®äžã€ããã³ãã¥ãã±ãŒã·ã§ã³ã®è³ªã®å€åã ããªãã£ã¹ã«ããã°å¯èœã ã£ããååãšã®äœæ°ãªãäŒè©±ãéè«ããçãŸããã¢ã€ãã¢ãããŒã ã®äžäœæãããã¬ã¯ãŒã¯ã§ã¯å€±ããããããæå³çãªã³ãã¥ãã±ãŒã·ã§ã³ã®æ©äŒãèšãã工倫ãå¿ èŠãšãªãã ãã®æç« ã§ææãããŠããããã¬ã¯ãŒã¯ã®åé¡ç¹ã¯æ¬¡ã®ãã¡ã©ãã§ããã
- äŒç€Ÿã®éèŠãªããŒã¿ãžã®ã¢ã¯ã»ã¹ãé£ãããªãããšã
- åŸæ¥å¡ã®éå€è²»çšãå¢å ããããšã
- ããåºããªãã£ã¹ã¹ããŒã¹ãå¿ èŠã«ãªãããšã
- ååãšã®å¶çºçãªã³ãã¥ãã±ãŒã·ã§ã³ãæžãããšã (Correct answer)
Correct answer: ååãšã®å¶çºçãªã³ãã¥ãã±ãŒã·ã§ã³ãæžãããšã
The passage explicitly states that a problem ('課é¡') with telework is the change in communication quality. It specifies that the casual conversations and chats with colleagues that happen in an office, which can lead to ideas and team unity, are easily lost ("ååãšã®äœæ°ãªãäŒè©±ãéè«ããçãŸããã¢ã€ãã¢ãããŒã ã®äžäœæãããã¬ã¯ãŒã¯ã§ã¯å€±ããããã"). This directly corresponds to the idea of a reduction in spontaneous communication.
Question 75: The Strait of Malacca is critically important to Japan's economy because:
- It is the main sea route connecting Japan directly to American export markets
- Japan's largest deep-sea fishing fleets concentrate in these strategic waters
- Most of Japan's oil imports from the Middle East pass through this narrow waterway (Correct answer)
- Japan's top trading partner, Malaysia, is located directly along this strait
Correct answer: Most of Japan's oil imports from the Middle East pass through this narrow waterway
The Strait of Malacca, between the Malay Peninsula and Sumatra, is the shortest sea route from Middle Eastern oil fields to Japan, making it a vital chokepoint for energy security.
Question 76: ïŒé³å£°ïŒ é§ ã®ã¢ããŠã³ã¹ãæµããŠããŸãã ããŸããªããäžçªç·ã«ã15æ30åçºãç¹å¥æ¥è¡ããããå·ã暪æµè¡ããå°çããŸãããã®é»è»ã¯ã6䞡線æã§ãåã®2äž¡ã1å·è»ãš2å·è»ãæå®åžãåŸãã®4äž¡ã3å·è»ãã6å·è»ãèªç±åžã§ããæå®åžããå©çšã®ã客æ§ã¯ããææã¡ã®å笊ã®å·è»çªå·ãã確ããã®äžããåŸ ã¡ãã ããããªãããã®é»è»ã¯ãéäžã®å·åŽé§ ã«ã¯æ¢ãŸããŸããã®ã§ããæ³šæãã ãããã ïŒè³ªåïŒ ãã®é»è»ã«ã€ããŠãæ£ãããã®ã¯ã©ãã§ããã
- ãã®é»è»ã¯å šéšã§4䞡線æã§ããã
- èªç±åžã¯1å·è»ãš2å·è»ã§ããã
- ãã®é»è»ã¯å·åŽé§ ã«åè»ããã
- æå®åžã¯åã®è»äž¡ã«ããã (Correct answer)
Correct answer: æå®åžã¯åã®è»äž¡ã«ããã
ã¢ããŠã³ã¹ã§ã¯ããåã®2äž¡ã1å·è»ãš2å·è»ãæå®åžããšæç¢ºã«èª¬æããŠããŸãããããã£ãŠããæå®åžã¯åã®è»äž¡ã«ããããšãããã®éžæè¢ãå 容ãšäžèŽããŠããŸããä»ã®éžæè¢ã¯ããå·åŽé§ ã«ã¯æ¢ãŸããŸããããã3å·è»ãã6å·è»ãèªç±åžããã6䞡線æããšããã¢ããŠã³ã¹ã®å 容ãšççŸããŸãã
Question 77: ïŒé³å£°ïŒ ç·ã®åŠçãšå¥³ã®åŠçã話ããŠããŸãã 女ïŒå±±ç°ãããæ¥é±ã®äœè€å çã®ææ¥ãã¬ããŒãã®ç· ãåãã ãããããçµãã£ãïŒ ç·ïŒãããããŸã ã ããããŒããæ±ºãŸããªããŠãæŽå²ã®äººç©ã«ã€ããŠæžãããšæã£ãŠããã ãã©ãå€ãããŠéžã¹ãªããã ã 女ïŒãããªãã ãç§ã¯ãå é±å çã玹ä»ããŠãããæ¬ãèªãã§ãé¢çœãã£ãããããã®æ¬ã®å 容ã«ã€ããŠæžãããšã«ãããã ç·ïŒããããã®æ¬ããåãèªãã§ã¿ããã©ãã¡ãã£ãšé£ãããŠããã£ã±ãã人ç©ã®ã»ããæžããããããªã 女ïŒãããã峿žé€šã§äžç·ã«è³æãæ¢ããªãïŒç§ããŸã æžãå§ããŠãªããããæäŒããã ç·ïŒæ¬åœïŒå©ãããïŒ ïŒè³ªåïŒ ç·ã®åŠçãå°ã£ãŠããããšã¯äœã§ããã
- å çã玹ä»ããæ¬ãé£ããããšã
- 峿žé€šã§è³æãèŠã€ãããªãããšã
- ã¬ããŒãã®ããŒããæ±ºãŸããªãããšã (Correct answer)
- ã¬ããŒãã®æžãæ¹ãåãããªãããšã
Correct answer: ã¬ããŒãã®ããŒããæ±ºãŸããªãããšã
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Question 78: 以äžã®æç« ãèªãã§ãåŸã®åãã«çããªããã ç°äžããã¯ãæ¥é±ã«è¿«ã£ãå šåœåŠäŒã§ã®çºè¡šãåã«ãèœã¡çããªãæ¥ã ãéãããŠããããã®æ¥ã®ããã«ã圌ã¯äœã¶æãç ç©¶ãç¶ããŠããã倧ããªèå°ã§èªåã®ç ç©¶ææãçºè¡šã§ããããšã«ãèžãé«é³Žããããªè奮ãæããäžæ¹ã§ã倧å¢ã®å°éå®¶ã®åã§è©±ãããšãèãããšãå¿èãçž®ããããªç·åŒµãèŠããŠãããä»å€ãã圌ã¯äžäººç ç©¶å®€ã«æ®ããã¹ã©ã€ããäœåºŠãèŠè¿ããªãããçºè¡šã®ç·Žç¿ãç¹°ãè¿ããŠããã åŠäŒã®çºè¡šãåã«ããŠãç°äžããã¯ä»ã©ã®ãããªæ°æã¡ã§ããã
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- äžå®ãšæåŸ ãå ¥ãæ··ãã£ãæ°æã¡ã§ããã (Correct answer)
Correct answer: äžå®ãšæåŸ ãå ¥ãæ··ãã£ãæ°æã¡ã§ããã
The text describes Tanaka's conflicting emotions. He feels excitement ("èžãé«é³Žããããªè奮ãæãã") about presenting his research, but also nervousness ("å¿èãçž®ããããªç·åŒµãèŠããŠãã") about speaking in front of experts. This combination of feelings is best described as a mix of anxiety and anticipation/excitement.
Question 79: ïŒé³å£°ïŒ å çãææ¥ã§è©±ããŠããŸãã ãã¿ãªãããæ¥é±ã®ãã¬ãŒã³ããŒã·ã§ã³ã®æºåã¯é²ãã§ããŸãããããŒãã¯èªç±ã§ãããããã€ã泚æç¹ããããŸãããŸããæéã¯äžäºº5åå³å®ã§ããé·ãããŠãçãããŠãæžç¹å¯Ÿè±¡ãšãªããŸããæ¬¡ã«ãçºè¡šã®éã«ã¯ãå¿ ãäžã€ä»¥äžã®ã°ã©ããåçãªã©ã®èŠèŠè³æã䜿ã£ãŠãã ããã話ãã ãã§ã¯ãèããŠãã人ã«å 容ãäŒããã«ããããã§ããæåŸã«ãçºè¡šåŸã«ã¯è³ªçå¿çã®æéãèšããŸãã®ã§ãä»ã®äººã®çºè¡šããã£ããèããŠã質åãèããŠãããŠãã ãããã ïŒè³ªåïŒ å çã話ããæ³šæç¹ãšããŠãæ£ãããªããã®ã¯ã©ãã§ããã
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- ä»ã®äººã®çºè¡šãèãå¿ èŠã¯ãªãã (Correct answer)
Correct answer: ä»ã®äººã®çºè¡šãèãå¿ èŠã¯ãªãã
å çã¯æåŸã«ãä»ã®äººã®çºè¡šããã£ããèããŠã質åãèããŠãããŠãã ããããšè¿°ã¹ãŠããŸããããã¯ãä»ã®äººã®çºè¡šãèãããšãå¿ èŠã§ãããšããæå³ãªã®ã§ããä»ã®äººã®çºè¡šãèãå¿ èŠã¯ãªãããšããéžæè¢ã¯ãå çã®æç€ºãšå察ã®å 容ã§ãããæ£ãããããŸããã
Question 80: If you need to buy a rope for the flag pole and you notice that the shadow cast by the flagpole is 11.6m. While the elevation angle of the sun is 35° 40.â What is the length of the rope you must buy?
- 17.28m
- 34.23m
- 32.32m
- 16.65m (Correct answer)
Correct answer: 16.65m
Explanation: <br> Given that the shadow cast by the flagpole is 11.6m and the elevation angle of the sun is 35° 40', we can use trigonometry to find the length of the rope. The shadow cast by the flagpole represents the adjacent side of a right triangle, while the height of the flagpole represents the opposite side. We can use the tangent function to find the length of the rope, which is the hypotenuse of the triangle. By using the formula tan(angle) = opposite/adjacent, we can calculate the length of the rope to be approximately 16.65m.
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