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Nursing Elites

ATI TEAS 7

physics

1. If the mass of an object remains constant and its velocity doubles, how does its momentum change?

Correct answer: a

Rationale: Momentum is directly proportional to velocity when mass is constant.

2. A scientist observes a new chemical reaction and proposes a mechanism for how it occurs. What is the BEST way to test this mechanism?

Correct answer: B

Rationale: Designing experiments to manipulate predicted intermediate steps is the best way to test the proposed mechanism because it directly tests the validity of the proposed mechanism by manipulating the specific steps involved. This approach allows for empirical validation of the proposed mechanism and provides concrete evidence to support or refute it. Simulating the reaction using computer models may provide some insights but does not directly test the mechanism. Comparing the reaction to similar known reactions can provide some context but does not directly test the proposed mechanism. Publishing the mechanism in a scientific journal is important for sharing findings but does not constitute a test of the mechanism itself.

3. Which word is misspelled?

Correct answer: D

Rationale: "Indelible" is spelled correctly, while "circumstance" should be "circumstance."

4. What is the primary difference between ionic and metallic bonding?

Correct answer: B

Rationale: Ionic bonds form discrete molecules, while metallic bonds form extended structures. Ionic bonds involve complete electron transfer between specific atoms, resulting in discrete molecules. Metallic bonds involve a "sea" of delocalized electrons shared across all metal atoms, leading to strong, non-directional bonding throughout the entire material.

5. Which of the following is an example of static friction?

Correct answer: c

Rationale: Static friction occurs when an object is at rest and prevents it from moving when a force is applied.

6. Which of the following blood vessels carries oxygenated blood from the lungs back to the left atrium of the heart?

Correct answer: B

Rationale: The correct answer is B: Pulmonary vein. The pulmonary vein is the blood vessel that carries oxygenated blood from the lungs back to the heart. Oxygenated blood flows from the lungs through the pulmonary veins to the left atrium of the heart, where it is then pumped out to the rest of the body through the aorta. The pulmonary artery, on the other hand, carries deoxygenated blood from the heart to the lungs for oxygenation. The aorta is the largest artery in the body and carries oxygenated blood from the heart to the rest of the body. The inferior vena cava carries deoxygenated blood from the lower body back to the right atrium of the heart. Therefore, the correct choice is B, the pulmonary vein, as it specifically carries oxygenated blood from the lungs back to the left atrium of the heart.

Similar Questions

Which of the following blood vessels carries oxygenated blood from the lungs back to the left atrium of the heart?
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The energy released in nuclear fusion originates from:

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