HESI A2 Physics Practice Test

Question 1 of 5

When a gas is compressed isothermally, we can say that:

A. The gas performs work on the surroundings, and its internal energy increases. B. The gas performs work on the surroundings, and its internal energy decreases. C. The surroundings perform work on the gas, and its internal energy increases. D. The surroundings perform work on the gas, and its internal energy decreases.

Question 2 of 5

The efficiency (η) of a heat engine is defined as the ratio of the net work done (Wnet) by the engine to the heat input (Qh) from the hot reservoir. The relationship is expressed as:

A. η = Wnet / Qh B. η = Qh / Wnet C. η = Wnet x Qh D. η = (Wnet + Qh) / 2

Question 3 of 5

Which of the following materials has the lowest density?

A. Water B. Cork C. Aluminum D. Steel

Question 4 of 5

Household alternating current typically has a frequency of 60 Hz. Which statement is true?

A. The circuit is suitable for lighting 60-watt bulbs. B. Circuits in the home may carry a current of 60 amperes. C. The expected voltage drop is 60 volts per meter. D. Electrons complete a cycle 60 times per second.

Question 5 of 5

Ocean waves build during a storm until there is a vertical distance from the high point to the low point of 6 meters and a horizontal distance of 9 meters between adjacent crests. The waves hit the shore every 5 seconds. What is the speed of the waves?

A. 1.2 m/s B. 1.8 m/s C. 2.0 m/s D. 2.4 m/s

HESI A2 Physics Practice Test

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HESI A2

HESI A2