Nursing Elites

1. A ball rolls down an inclined plane. What is the main factor affecting its acceleration?

• A. The material of the ball
• B. The angle of the incline
• C. The air resistance
• D. The ball's initial velocity

Correct answer: B

Rationale: The main factor affecting the acceleration of a ball rolling down an inclined plane is the angle of the incline. The steeper the incline, the greater the component of the gravitational force acting parallel to the incline, leading to a higher acceleration of the ball. The material of the ball, air resistance, and the ball's initial velocity may have some impact on the motion of the ball, but the angle of the incline is the primary factor affecting acceleration in this scenario.

2. The author's tone towards UBI can be described as

• A. Strongly supportive, advocating for its immediate implementation without reservations.
• B. Strongly critical, highlighting only the potential drawbacks and dismissing its benefits.
• C. Neutral and objective, presenting both sides of the argument without taking a stance.
• D. Cautiously optimistic, acknowledging both the potential and challenges while calling for further discussion.

Correct answer: D

Rationale: The passage acknowledges both positive and negative aspects of UBI, suggesting a cautious and balanced perspective, aligning with D.

3. How does the mass of an object affect its inertia?

• A. Mass has no impact on inertia
• B. Higher mass increases inertia
• C. Higher mass decreases inertia
• D. Mass influences gravitational force, not inertia

Correct answer: B

Rationale: Inertia is the resistance of an object to changes in its state of motion. The greater the mass of an object, the greater its inertia because it requires more force to change its state of motion. This is in line with Newton's first law of motion, which states that an object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an external force.

4. The unit for measuring luminous flux, which describes the perceived brightness of a light source by the human eye, is:

• A. Candela
• B. Lumen
• C. Lux
• D. Hertz

Correct answer: A

Rationale: The correct answer is B: Lumen. Luminous flux is the measure of the total quantity of visible light emitted by a source per unit time, measured in lumens. The candela (A) is the unit for luminous intensity, lux (C) is the unit for illuminance (luminous flux per unit area), and Hertz (D) is the unit for frequency. Therefore, in this question, the unit for measuring luminous flux is the lumen, as it specifically quantifies the perceived brightness of a light source by the human eye.

5. Acknowledge the organ devoted to blood filtration.

• A. Liver
• B. Kidneys
• C. Spleen
• D. Pancreas

Correct answer: B

Rationale: The kidneys are the primary organs responsible for filtering blood and removing waste products, excess fluids, and toxins. They play a crucial role in maintaining the body's internal environment and regulating blood pressure.

6. Your hypothesis predicts that exposing plants to classical music will enhance their growth. How could you design an experiment to test this hypothesis?

• A. Play classical music to all plants in the greenhouse and compare their growth to a control group without music.
• B. Select plants with personal preferences for classical music and compare their growth to plants who dislike it.
• C. Play different genres of music to separate plants and analyze which genre promotes the most growth.
• D. Observe the behavior of plants listening to music and measure their happiness levels.

Correct answer: A

Rationale: To test the hypothesis that exposing plants to classical music enhances their growth, the most appropriate experimental design would be to play classical music to all plants in the greenhouse (experimental group) and compare their growth to a control group of plants that are not exposed to any music. This design allows for a direct comparison between the effects of classical music exposure on plant growth, eliminating confounding variables that may arise from individual plant preferences or different music genres.

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