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HESI A2 · Physics · HESI A2 Physics

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

If a force of 12 kg stretches a spring by 3 cm, how far will the spring stretch when a force of 30 kg is applied?

A. 6 cm

B. 7.5 cm

C. 9 cm

D. 10.5 cm

Expert Explanatory Rationale

Correct Answer: 7.5 cm

Question 2 of 5

An object with a charge of 4 ÃŽ¼C is placed 1 meter from another object with a charge of 2 ÃŽ¼C. What is the magnitude of the resulting force between the objects?

A. 0.04 N

B. 0.072 N

C. 80 N

D. 8 10Ã¢Ë†â€™6 N

Expert Explanatory Rationale

Correct Answer: 0.04 N

Question 3 of 5

How might the energy use of an appliance be expressed?

A. Power = energy time

B. Time + energy = power

C. Energy = power time

D. Energy/power = time

Expert Explanatory Rationale

Correct Answer: Energy = power time

Question 4 of 5

How do you determine the velocity of a wave?

A. Multiply the frequency by the wavelength.

B. Add the frequency and the wavelength.

C. Subtract the wavelength from the frequency.

D. Divide the wavelength by the frequency.

Expert Explanatory Rationale

Correct Answer: Multiply the frequency by the wavelength.

Question 5 of 5

A wave in a rope travels at 12 m/s and has a wavelength of 2 m. What is the frequency?

A. 38.4 Hz

B. 6 Hz

C. 4.6 Hz

D. 3.75 Hz

Expert Explanatory Rationale

Correct Answer: 6 Hz