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Nursing Elites

ATI TEAS 7

physics

1. In which direction do the particles of the medium move in a transverse wave?

Correct answer: a

Rationale: In a transverse wave, particle displacement occurs perpendicular to the direction of wave travel.

2. Two coherent light waves with a slight phase difference interfere. What determines the resulting intensity of the combined wave?

Correct answer: A

Rationale: The intensity of the resulting wave depends on the individual intensities and the phase difference between the interfering waves. Constructive interference leads to higher intensity, while destructive interference leads to lower intensity.

3. The van't Hoff factor (i) accounts for the number of particles a solute dissociates into in solution. For a compound that dissociates completely in water, i would be...

Correct answer: C

Rationale: The van't Hoff factor (i) is used to account for the number of particles a solute dissociates into in solution. For a compound that dissociates completely in water, such as a strong electrolyte, i would be equal to the total number of ions produced by the dissociation. Since the compound dissociates completely, it forms an equal number of ions, resulting in an i value of 1. Therefore, the correct answer is C: 1.

4. How does lymph move through the lymphatic vessels?

Correct answer: D

Rationale: The correct answer is D: "All of the above." Lymph, a clear fluid that carries immune cells and waste products, moves through the lymphatic vessels by multiple mechanisms. While the pumping action of the heart plays a minor role, the primary driving forces are muscle contractions and breathing movements that squeeze the vessels. Additionally, lymphatic vessels contain one-way valves that prevent the backward flow of lymph, ensuring that it moves in the right direction. Therefore, all of the options provided contribute to the movement of lymph through the lymphatic system.

5. In the context of optical fibers, chromatic dispersion refers to:

Correct answer: B

Rationale: In optical fibers, chromatic dispersion refers to the spreading of light pulses due to different colors traveling at slightly different speeds. This occurs because different wavelengths of light experience varying refractive indices in the fiber, causing them to propagate at different velocities. As a result, the light pulses spread out over distance, leading to a distortion of the transmitted signal. Understanding chromatic dispersion is crucial in optical fiber communications to minimize signal degradation and maintain data integrity.

6. Two objects with different masses collide. What happens to their momentum after the collision?

Correct answer: C

Rationale: In an isolated system (no external forces), the total momentum

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