A violation of the second law of thermodynamics would occur if
a. a ball lying on the ground started to bounce.
b. transfer of energy by heat moved energy from an object at low temperature to an object at a higher temperature.
c. a refrigerator heated the air in the room in which the refrigerator is located.
d. any of the above occurred.
e. (a) or (b) occurred, but not (c).
e
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An object's weight is properly expressed in units of
A) meters. B) kilograms. C) newtons. D) cubic centimeters.
How does the solar nebula theory account for the presence of comets?
What will be an ideal response?
Which of the following is an expected consequence of global warming?
A) more extreme weather events, including extreme winter storms B) ocean water becoming more acidic C) an increase in sea level D) reduced ice coverage in the Arctic Ocean E) All of the above are expected consequences of global warming.
The plates of a parallel plate capacitor of capacitance 
are horizontal. Into the gap a slab of dielectric material with 
is placed, filling the bottom half of the gap between the plates. What is the resulting new capacitance?
A.
B.
C.
D.
E.
