A quantity of a monatomic ideal gas expands to twice the volume while maintaining the same pressure. If the internal energy of the gas were U0 before the expansion, what is it after the expansion?
a. U0
b. 2U0
c. 4U0
d. The change in temperature must also be known to answer this question.
b
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The 
He nucleus is unstable. To what will it decay?
A. 
Li + e- +
B. 
Li + e- +
C. Li + e- + ?
D. Li + e-
E. 
H + e+ + ?
When an 6-kg object increases its potential energy by 540 J, approximately how has its position changed?
a. It has risen vertically 9 m. b. It has fallen vertically 9 m. c. It has risen vertically 90 m. d. It has moved horizontally 90 m.
If you hold two objects that have the same weight density, then they
A) may have unequal mass densities. B) have equal mass densities. C) are equal in weight.
The temperature of a gas can be increased by
a. compressing it. b. adding heat to it. c. doing work on it. d. all of the above. e. none of the above.