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Nursing Elites

ATI TEAS 7

physics

1. What is the relationship between work, force, and displacement?

Correct answer: b

Rationale: Work done is the product of force and displacement in the direction of the force.

2. What is the momentum of a car with a mass of 1500 kg moving at a speed of 20 m/s?

Correct answer: A

Rationale: Momentum is defined as the product of mass and velocity. Momentum = mass x velocity = 1500 kg x 20 m/s = 30,000 kg m/s.

3. Which functional group is commonly found in ketones?

Correct answer: B

Rationale: Ketones have the functional group -CO-, which is a carbonyl group. The other choices are associated with different functional groups

4. Which component of the nervous system is responsible for controlling voluntary movements, such as the contraction of skeletal muscles?

Correct answer: c

Rationale: The correct answer is C, the somatic nervous system. The somatic nervous system is responsible for controlling voluntary movements, such as the contraction of skeletal muscles. This system consists of motor neurons that send signals from the central nervous system to the skeletal muscles, allowing us to consciously control our movements. The autonomic nervous system (A) controls involuntary actions like heart rate and digestion, the peripheral nervous system (B) includes all nerves outside of the brain and spinal cord, and the sympathetic nervous system (D) is a division of the autonomic nervous system responsible for the fight-or-flight response. Therefore, the somatic nervous system is specifically involved in voluntary movements.

5. Unlike the circulatory system, the lymphatic system does not have a pump. How does lymph move through the lymphatic vessels?

Correct answer: D

Rationale: The correct answer is D, 'All of the above.' Unlike the circulatory system which relies on the heart's pumping action, the lymphatic system lacks a central pump. Lymph moves through lymphatic vessels primarily due to muscle contractions and breathing movements that squeeze the vessels, helping propel the lymph forward. Additionally, one-way valves within the lymphatic vessels prevent the backward flow of lymph, ensuring it moves in the right direction. Therefore, all three mechanisms - heart pumping, muscle contractions, and one-way valves - work together to facilitate the movement of lymph through the lymphatic system.

6. In nuclear transmutation, a target nucleus is bombarded with a particle to create:

Correct answer: C

Rationale: In nuclear transmutation, a target nucleus is bombarded with a particle to create an entirely new element. During this process, the target nucleus absorbs the incoming particle, resulting in changes to its atomic number and sometimes its mass number. These changes can lead to the creation of a different element altogether. This is a fundamental concept in nuclear chemistry and is used in various applications, including the creation of new isotopes for research or medical purposes. Options A and B are incorrect because transmutation involves creating a different element, not just a heavier or lighter isotope of the same element. Option D, a chain reaction of nuclear fission, is also incorrect as it refers to a different process where a nucleus splits into smaller fragments, releasing energy and more neutrons to sustain the chain reaction.

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