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Nursing Elites

ATI TEAS 7

physics

1. What property of matter remains constant regardless of changes in its state?

Correct answer: a

Rationale: Mass remains constant for a given amount of matter, regardless of its state (solid, liquid, or gas) or its location in the universe. Explanation of other options:

2. Which of the following is a unit of power?

Correct answer: c

Rationale: Watt is the unit of power, measuring the rate of work done or energy transfer.

3. What is the term for the pressure exerted by blood against the walls of blood vessels?

Correct answer: B

Rationale: The correct answer is B: Blood pressure. Blood pressure is the term used to describe the force or pressure exerted by blood against the walls of blood vessels. It is typically measured in millimeters of mercury (mmHg) and consists of two main components - systolic pressure (the pressure when the heart is contracting) and diastolic pressure (the pressure when the heart is relaxed). Heart rate (A) refers to the number of times the heart beats per minute and is not specifically related to the pressure against blood vessel walls. Cardiac output (C) is the volume of blood pumped by the heart per minute, while stroke volume (D) is the volume of blood pumped by the heart in a single contraction. These are related to heart function but not specifically to the pressure against blood vessel walls.

4. The process of splitting a heavy nucleus into smaller nuclei, releasing a vast amount of energy, is called:

Correct answer: B

Rationale: Rationale: Nuclear fission is the process of splitting a heavy nucleus into smaller nuclei, releasing a vast amount of energy. This process is commonly used in nuclear power plants and nuclear weapons. A) Nuclear fusion is the process of combining two light nuclei to form a heavier nucleus, releasing energy in the process. This process powers the sun and other stars. C) Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation. D) Chain reaction is a self-sustaining reaction in which the products of one reaction event stimulate further reaction events. This can occur in both nuclear fission and nuclear fusion reactions.

5. What property of a wave determines its pitch in sound waves?

Correct answer: B

Rationale: The pitch of a sound wave is determined by its frequency. Frequency refers to the number of cycles of a wave that occur in a given time period. Higher frequencies correspond to higher pitches, while lower frequencies correspond to lower pitches. Amplitude refers to the intensity or loudness of a sound wave, wavelength is the distance between two consecutive points in a wave, and speed is the rate at which a wave travels through a medium.

6. What property of matter determines its resistance to changes in shape or size?

Correct answer: B

Rationale: Liquids have a definite volume but can take the shape of their container, unlike solids with fixed shapes and volumes.

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