Which of the following statements is true?

A. heat travels from a cooler area to a warmer area
B. when liquids evaporate, heat is released
C. when a gas condenses to a liquid, heat is absorbed
D. when a liquid boils, heat is absorbed


Answer: D

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A seat belt pretensioner is __________

A) Used to remove slack from the seat belt in the event of a collision B) A device that contains an explosive charge C) Used to force the occupant back into position against the seat back in the event of a collision D) All of the above

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Induced-draft, forced-draft, counterflow, and crossflow cooling towers are all examples of:

A) A hyperbolic cooling tower. B) A mechanical-draft cooling tower. C) An atmospheric-draft cooling tower. D) A natural-flow cooling tower.

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Two types of conditioning are classical and:

A. Operant B. Non-classical C. Historical

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Which subatomic particle has no charge?

a. Proton b. Neutron c. Electron d. Ion

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