Nursing Elites

1. How does friction affect motion?

• A. Friction increases speed
• B. Friction decreases speed
• C. Friction has no impact on speed
• D. Friction causes objects to float

Correct answer: b

Rationale: Friction opposes motion, leading to a decrease in speed or hindering movement.

2. Which word in the sentence "The quick brown fox jumps over the lazy dog" demonstrates alliteration?

• A. quick
• B. brown
• C. fox
• D. jumps

Correct answer: A

Rationale: Alliteration is the repetition of the first consonant sound of words close together. In this case, "quick" and "brown" both start with the "k" sound.

3. What is the largest muscle in the human body?

• A. Gluteus maximus (buttocks)
• B. Quadriceps femoris (thighs)
• C. Erector spinae (back)
• D. Pectoralis major (chest)

Correct answer: A

Rationale: The gluteus maximus is the largest muscle in the human body, located at the back of the hip and extending from the sacrum to the femur. It is a powerful muscle that plays a crucial role in extending the hip joint, enabling walking, running, and climbing stairs.

4. What is the relationship between genetic drift and the founder effect?

• A. Founder effect is a cause of genetic drift within a small population
• B. Genetic drift is a cause of the founder effect in new populations
• C. They are the same phenomenon with different names
• D. They are unrelated concepts.

Correct answer: A

Rationale: Rationale: - The founder effect is a specific type of genetic drift that occurs when a small group of individuals establishes a new population, leading to a loss of genetic variation. - Genetic drift, on the other hand, is a broader concept that refers to random changes in allele frequencies in a population over time due to chance events. - Therefore, the founder effect is a specific scenario within the broader concept of genetic drift, where the establishment of a new population by a small number of individuals leads to genetic changes in the population.

5. 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.

6. A rocket engine expels hot gases backwards. What principle explains the rocket's forward motion?

• A. Newton's first law of motion
• B. Newton's second law of motion
• C. Newton's third law of motion
• D. Law of conservation of energy

Correct answer: C

Rationale: The hot gases expelled backwards exert a force on the rocket in the opposite direction (forward), propelling it upwards according to the action-reaction principle.

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