Nursing Elites

1. What happens to the kinetic energy of an object when its velocity is doubled?

• A. Kinetic energy remains the same
• B. Kinetic energy is halved
• C. Kinetic energy doubles
• D. Kinetic energy quadruples

Correct answer: c

Rationale: Kinetic energy is directly proportional to the square of an object's velocity.

2. The process of mixing two or more substances to form a heterogeneous mixture is called:

• A. Dissolving
• B. Diluting
• C. Mixing
• D. Reacting

Correct answer: C

Rationale: Mixing results in a heterogeneous mixture where the components are physically distinguishable, unlike solutions where everything dissolves uniformly

3. According to the Law of Conservation of Energy, the total amount of energy in a closed system:

• A. Increases over time.
• B. Decreases over time.
• C. Remains constant.
• D. Depends on the temperature of the system.

Correct answer: C

Rationale: Rationale: According to the Law of Conservation of Energy, the total amount of energy in a closed system remains constant. This means that energy cannot be created or destroyed within the system, but can only be transformed from one form to another. As a result, the total energy within the system is conserved and does not change over time. This principle is fundamental in understanding energy transformations and interactions within physical systems.

4. 12 is a/an:

• A. even number
• B. odd number
• C. prime number
• D. composite number

Correct answer: A

Rationale: Even numbers are integers divisible by 2 without a remainder. Since 12 divided by 2 equals 6 with no remainder, 12 is even.

5. What do isotopes of the same element have in common?

• A. Identical number of protons and neutrons.
• B. Identical chemical properties.
• C. Identical number of electrons.
• D. Identical mass number.

Correct answer: A

Rationale: Identical number of protons and neutrons - Isotopes have the same atomic number but different mass numbers due to varying neutron counts.

6. A kite has a top base of 20cm, a bottom base of 30cm, and two equal side lengths of 15cm. What is its perimeter?

• A. 55cm
• B. 65cm
• C. 70cm
• D. 80cm

Correct answer: C

Rationale: Add the lengths of all sides: perimeter = top base + bottom base + 2 * side length = 20cm + 30cm + 2 * 15cm = 70cm.

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