In a System Composed of an Ideal Gas Contained in a Cylinder

question 99

Multiple Choice

In a system composed of an ideal gas contained in a cylinder fitted with a piston,a reversible adiabatic expansion causes the temperature of the gas to drop because

• A)heat is given up by the system when the piston moves.
• B)the pressure of the gas remains constant.
• C)work is done on the system as the gas expands.
• D)work done by the system is done entirely at the expense of its internal energy.
• E)heat is absorbed by the piston when it does work.

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Definitions:

Defense Mechanisms

Unconscious psychological strategies brought into play by the mind to manipulate, deny, or distort reality in order to defend against feelings of anxiety and unacceptable impulses.

Ego

In psychoanalytic theory, the part of the mind that mediates between the conscious and the unconscious and is responsible for reality testing and a sense of personal identity.

Anxiety

An emotion of anxiety or tension, characteristically over an event that is about to happen or whose result is indeterminate.

Sexual Gratification

Sexual Gratification refers to the pleasure or satisfaction derived from sexual activities or experiences.