Nursing Elites

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

• A. 30,000 kg m/s
• B. 1500 kg m/s
• C. 20 kg m/s
• D. Momentum cannot be determined without knowing the direction of motion.

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.

2. What is the SI unit of measurement for acceleration?

• A. Meters per second (m/s)
• B. Newton (N)
• C. Meters (m)
• D. Meters per second squared (m/s²)

Correct answer: d

Rationale: Acceleration is measured in meters per second squared (m/s²) in the SI unit system.

3. The muscular chamber of the heart that receives blood from the body and pumps it to the lungs is the:

• A. Right atrium
• B. Left atrium
• C. Right ventricle
• D. Left ventricle

Correct answer: C

Rationale: The correct answer is C: Right ventricle. The right ventricle receives deoxygenated blood from the body and pumps it to the lungs for oxygenation. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle. The left atrium receives oxygenated blood from the lungs and passes it to the left ventricle. The left ventricle then pumps oxygenated blood to the rest of the body. Understanding the flow of blood through the heart chambers is essential for grasping the functions of each chamber in the circulatory system.

4. Muscles that work together to produce a specific movement are called

• A. Antagonistic muscles
• B. Agonistic muscles
• C. Synergistic muscles
• D. Flexors and extensors

Correct answer: C

Rationale: Synergistic muscles are the correct answer because they are muscles that work together to produce a specific movement. These muscles coordinate their actions to achieve a common goal, such as bending the elbow or extending the knee. Antagonistic muscles work in opposition to each other, while agonistic muscles are the primary movers in a particular movement. Flexors and extensors refer to specific muscle groups that perform opposing actions, rather than working together synergistically. Understanding the concept of synergistic muscles is essential in biomechanics and exercise science.

5. What is the most effective way to ensure clarity and conciseness in your writing?

• A. Using complex sentence structures and passive voice.
• B. Avoiding unnecessary repetition and redundant words.
• C. Replacing simple words with more sophisticated synonyms.
• D. Adding flowery introductions and lengthy conclusions.

Correct answer: B

Rationale: Concise writing eliminates unnecessary words and uses active voice to express ideas directly and clearly.

6. What type of waves require a medium (solid, liquid, or gas) to propagate?

• A. Transverse waves
• B. Longitudinal waves
• C. Electromagnetic waves
• D. Surface waves

Correct answer: B

Rationale: Longitudinal waves require a medium (solid, liquid, or gas) to propagate because the particles in the medium move parallel to the direction of the wave. Transverse waves, on the other hand, do not require a medium and can propagate through a vacuum. Electromagnetic waves also do not require a medium for propagation, as they consist of oscillating electric and magnetic fields. Surface waves are a combination of both longitudinal and transverse waves and also require a medium to propagate.

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