Mixed Deck — All NTN Topics Flashcards

Solve for x: 3x + 7 = 22

Answer: x = 5

3x = 22 − 7 = 15, so x = 15 ÷ 3 = 5.

What is the median of the following set: 4, 7, 2, 9, 5?

Answer: 5

Ordered: 2, 4, 5, 7, 9 — the middle value is 5.

You are dispatched to a domestic disturbance. Upon arrival you find both parties calm and the involved individuals say nothing happened. What should you do?

Answer: Conduct a thorough investigation, interview parties separately, and document your findings

Domestic situations require thorough investigation including separate interviews because victims may be reluctant to speak in front of the abuser.

Non-verbal communication in the workplace includes which of the following?

Answer: Body language, eye contact, and facial expressions

Non-verbal communication includes physical cues like body language, eye contact, and facial expressions.

A passage reads: 'Dispatchers should prioritize calls coded Priority 1 above all others, followed by Priority 2, then Priority 3.' Which call should be dispatched first?

Answer: Priority 1

The passage explicitly states Priority 1 calls are dispatched above all others.

What is a "data warehouse"?

Answer: A database optimized for the storage and retrieval of large volumes of data

A data warehouse is a specialized database system designed for the storage and efficient retrieval of large volumes of historical and operational data from various sources. Unlike transactional databases, it is optimized for complex analytical queries and reporting, rather than real-time data processing. Its primary function is to support business intelligence activities, enabling organizations to analyze trends, patterns, and insights over time to aid strategic decision-making.

What type of motion does a cam convert?

Answer: Rotational motion to linear motion

A cam is a mechanical component specifically designed to convert rotational motion into reciprocating, or linear, motion. As the cam rotates, its uniquely shaped profile interacts with a follower, causing the follower to move back and forth or up and down in a predetermined pattern. This conversion is a fundamental principle used in many machines, from internal combustion engines to automated manufacturing equipment.

A passage reads: 'Community policing emphasizes building relationships with residents to prevent crime.' The MAIN idea of this passage is:

Answer: Crime prevention through community relationships

The passage directly states that community policing focuses on relationships for crime prevention.

A patient is found in cardiac arrest and an AED is available. After turning on the AED and attaching the pads, the device advises 'No shock advised.' What should the rescuer do next?

Answer: Immediately resume CPR for 2 minutes

When an AED advises no shock, the patient's rhythm is not shockable (asystole or PEA). The rescuer should immediately resume CPR for 2 minutes before the AED reanalyzes the rhythm.

A department has 120 officers. If 15% are assigned to detective units, how many officers are detectives?

Answer: 18 officers

15% of 120 = 0.15 × 120 = 18 officers.

What state of matter has a definite volume but no definite shape?

Answer: Liquid

Liquids have a definite volume but take the shape of their container, unlike solids (fixed shape) or gases (no fixed volume).

Which of the following best describes the scientific method?

Answer: A structured process of observation, hypothesis, testing, and conclusion

The scientific method is a systematic process of asking questions, forming hypotheses, conducting experiments, and drawing conclusions.

Which option correctly fixes the sentence fragment: 'While the officer was on patrol.'

Answer: While the officer was on patrol, a call came in.

Adding a main clause ('a call came in') makes the fragment a complete sentence.

A passage reads: 'Non-lethal devices such as tasers and pepper spray are alternatives to lethal force.' The passage suggests these devices are used to:

Answer: Avoid using lethal force

The passage states non-lethal devices are alternatives to lethal force, implying their purpose is to avoid lethal force.

An inclined plane (ramp) is 12 feet long and rises 3 feet in height. What is the mechanical advantage of this inclined plane?

Answer: 4:1

The mechanical advantage of an inclined plane = length / height = 12 / 3 = 4:1. This means the force needed to push a load up the ramp is one-quarter of lifting it straight up.

A jail holds 300 inmates. If 60 are released and 45 new inmates arrive, what is the new total?

Answer: 285 inmates

300 − 60 + 45 = 285 inmates.

Which of the following demonstrates effective written communication in a public safety report?

Answer: "The suspect exhibited signs of nervousness, including rapid speech, avoiding eye contact, and fidgeting with their hands."

Effective report writing uses specific, observable, and objective language. Describing exact behaviors rather than subjective impressions provides clear documentation that can withstand legal scrutiny.

Which sentence correctly uses 'its' and 'it's'?

Answer: The department updated its policy manual.

'Its' is the possessive form; 'it's' is a contraction for 'it is.'

Which of the following is an example of a conductor?

Answer: Copper wire

Copper wire is an electrical conductor because it allows electrons to flow freely through it.

Effective active listening during an interview involves:

Answer: Maintaining eye contact, nodding, and summarizing what was said

Active listening includes nonverbal cues and paraphrasing to confirm understanding.