Nursing Elites

1. Which property of a wave represents the distance between two successive identical points on a wave?

• A. Wavelength
• B. Amplitude
• C. Frequency
• D. Period

Correct answer: a

Rationale: Wavelength is the distance between two identical points (like crests or troughs) on a wave.

2. A patient weighs 180 pounds. What is their weight in kilograms (1kg = 2.2lbs)?

• A. 68kg
• B. 75kg
• C. 82kg
• D. 90kg

Correct answer: C

Rationale: Divide the weight in pounds (180) by the conversion factor (2.2lbs/kg).

3. The author's attitude towards history seems to be

• A. indifferent and neutral, presenting it as an objective field of study.
• B. critical and dismissive, questioning its practical applicability in the present.
• C. enthusiastic and optimistic, highlighting its potential to guide the future.
• D. pessimistic and cautious, emphasizing the risk of repeating past mistakes.

Correct answer: C

Rationale: The passage's overall tone highlights the value and utility of history, showcasing its potential to inspire and guide us, suggesting an optimistic and encouraging view.

4. What property of a wave is responsible for determining its energy?

• A. Amplitude
• B. Wavelength
• C. Frequency
• D. Velocity

Correct answer: a

Rationale: The amplitude of a wave determines its energy, with higher amplitudes corresponding to higher energy levels.

5. Which of the following hormones helps regulate blood pressure by affecting kidney function?

• A. Insulin
• B. Testosterone
• C. Renin
• D. Estrogen

Correct answer: C

Rationale: The correct answer is C: Renin. Renin is an enzyme produced by the kidneys that plays a crucial role in regulating blood pressure. Renin helps control blood pressure by initiating a series of reactions that ultimately lead to the production of angiotensin, a hormone that constricts blood vessels and increases blood pressure. Insulin is a hormone that regulates blood sugar levels, not blood pressure. Testosterone and estrogen are sex hormones that do not have a direct impact on kidney function or blood pressure regulation. Therefore, the correct hormone that helps regulate blood pressure by affecting kidney function is Renin.

6. A spring is stretched and released, causing an object attached to it to oscillate. What determines the frequency of the oscillations?

• A. The mass of the object
• B. The stiffness of the spring
• C. The initial displacement of the object
• D. All of the above

Correct answer: B

Rationale: The stiffness of the spring. Frequency depends on the spring constant and the mass, but the mass term cancels out in the formula for simple harmonic motion, leaving only the spring constant.

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