An unknown amount of gas is placed in a container with a moveable piston as shown below. The cross-sectional area of the container is A. When a mass M is placed on the piston, the height of the piston above the bottom of the container is h
What happens when an amount of energy Q is transferred by heat to the gas? (Q>0.)
1.T increases.
2.h increases.
3.T and h increase.
4.T and P increase.
5.h and P increase.
6.T, h, and P increase.
7.T decreases.
8.h increases; T decreases.
9.None of the above
10.Impossible to determine
3
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In a phase diagram, the _____________line gives the temperature where the first liquid forms upon heating an alloy of given composition C0 from the solid phase.
Fill in the blank(s) with the appropriate word(s).
An object of mass m rests on a flat table. The earth pulls on this object, exerting a force of magnitude mg. What is the Newton's third law pair force to this pull?
A) The table pushing up on the object exerting the force mg. B) The object pushing down on the table exerting the force mg. C) The table pushing down on the floor exerting the force mg. D) The object pulling upward on the Earth exerting the force mg. E) The table pulling upward on the Earth exerting the force mg.
If one-half of the members of a symphony orchestra are absent because of head colds, thus reducing the overall intensity of sound by 50%, what will be the reduction in the decibel level?
a. 5 dB c. 48 dB b. 3 dB d. 1.7 dB
Fission fragments are
A. harmless particles emitted in radioactivity B. among the most dangerous kind of radiation C. ghost-like particles that pass through the Earth D. the source of most energy in the Sun