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Nursing Elites

ATI TEAS 7

physics

1. How does the acceleration of an object change if the force acting on it is doubled?

Correct answer: b

Rationale: According to Newton's second law (F = ma), if force is doubled and mass remains constant, acceleration doubles.

2. The T wave on an ECG corresponds to:

Correct answer: D

Rationale: The T wave on an ECG corresponds to ventricular repolarization. During this phase, the ventricles are resetting electrically after contraction, preparing for the next heartbeat. Atrial depolarization is represented by the P wave, ventricular depolarization by the QRS complex, and atrial repolarization is typically hidden within the QRS complex. Therefore, option D, 'Ventricular repolarization,' is the correct choice when identifying the electrical activity represented by the T wave on an ECG.

3. A baseball is thrown into the air. At the peak of its trajectory, which of the following forces is acting on the ball?

Correct answer: A

Rationale: At the peak, the ball momentarily stops moving upwards. Its inertia keeps it moving horizontally, but there is no force propelling it upwards except for gravity pulling it down.

4. Which structure surrounds individual muscle fibers, providing support and aiding in the transmission of force generated during muscle contraction?

Correct answer: b

Rationale: The correct answer is B: Endomysium. Endomysium is the connective tissue layer that surrounds individual muscle fibers within a muscle. It plays a crucial role in supporting the muscle fibers and aiding in the transmission of force generated during muscle contraction. Tendons (option A) connect muscle to bone and do not surround individual muscle fibers. Perimysium (option C) surrounds bundles of muscle fibers, while epimysium (option D) envelops the entire muscle. Therefore, endomysium is specifically responsible for surrounding and supporting individual muscle fibers, making it the most fitting answer.

5. What is the functional group present in aldehydes?

Correct answer: B

Rationale: Aldehydes have the functional group -CHO, which is a carbonyl group bonded to a hydrogen atom. The other choices are associated with different functional groups.

6. Which sentence uses the modal verb "should" correctly?

Correct answer: B

Rationale: Option B conveys an intention or expectation regarding the present or near future.

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