Over 1 cycle of a cyclic process in which a system does net work on its environment:
A. the change in the pressure of the system cannot be zero
B. the change in the volume of the system cannot be zero
C. the change in the temperature of the system cannot be zero
D. the change in the internal energy of the system cannot be zero
E. none of the above
Ans: E. none of the above
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All the planets revolve around the Sun in the same direction, except for Venus and Uranus
Indicate whether the statement is true or false
A 1 newton apple hangs from a tree branch. The force by the apple on Earth
A) cannot be determined from the given information, because the mass of the earth needs to be given. B) is 1 newton downward. C) is 1 newton upward. D) is zero. E) is much smaller than 1 newton, but not zero.
A body on the surface of the Earth weighs 400 lb. The radius of the Earth is about 4,000 miles. If this same body were placed on a 4,000-mile-high tower, its weight would be
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