Practice Test GeeksRegents Practice Test
← All Regents Flashcard Decks

Physics Flashcards

7 cards from real Regents practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Physics flashcards as text

  1. A 2 kg mass is lifted 5 m vertically. What is the gravitational potential energy gained? (g = 9.8 m/s²)

    Answer: 98 J

    PE = mgh = 2 × 9.8 × 5 = 98 J.

  2. Which type of electromagnetic radiation has the highest frequency?

    Answer: Gamma rays

    Gamma rays have the highest frequency (and shortest wavelength) in the electromagnetic spectrum.

  3. A 1,500 W hair dryer is used for 2 minutes. How much electrical energy is consumed?

    Answer: 180,000 J

    E = P × t = 1,500 W × 120 s = 180,000 J.

  4. In a series circuit with three resistors (2 Ω, 3 Ω, and 5 Ω), what is the total resistance?

    Answer: 10 Ω

    In a series circuit, total resistance = R₁ + R₂ + R₃ = 2 + 3 + 5 = 10 Ω.

  5. A sound wave travels from air into water. Which property of the wave remains unchanged?

    Answer: Frequency

    Frequency is determined by the source and remains constant when a wave crosses a boundary; speed and wavelength change.

  6. Which of the following is an example of nuclear fission?

    Answer: A uranium nucleus splitting into smaller nuclei

    Nuclear fission involves a heavy nucleus (like uranium) splitting into smaller fragments, releasing large amounts of energy.

  7. A block slides down a frictionless ramp. At the bottom its kinetic energy equals 200 J. What was its gravitational potential energy at the top?

    Answer: 200 J

    On a frictionless ramp, all gravitational PE converts to KE, so PE at top = KE at bottom = 200 J.