Answer the following statement(s) true (T) or false (F)
A charged particle moving at a constant speed cannot radiate electromagnetic waves.
TRUE
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A torque of 20.0 N•m is applied to a bolt. The bolt rotates through an angle of 180 degrees. The work done in turning the bolt is
A. 72.5 J. B. 51.9 J. C. 62.8 J. D. 49.9 J. E. 58.4 J.
Suppose that an atom has two energy levels separated by an energy difference ?E. When such atoms are in thermal contact with a reservoir at temperature T, there is roughly 1 atom in the higher state for every 4 in the lower state. What is the approximate ratio of ?E to kBT?
A.
B. 4
C. ln 4
D. ?ln 4
E. e?1/4
F. e?4
T. Other (specify)
As the ball rolls from the straight path from A to B its velocity increases and its acceleration
1) increases, 2) decreases, 3) remains constant, and as it rolls from B to C its acceleration along the path 4) increases. 5) decreases. 6) remains constant.
Some people claim that the theory of evolution violates the second law of thermodynamics, since that theory holds that order develops out of disorder, corresponding to a decrease in entropy. This claim
A. if incorrect, would mean that the theory of evolution must be true. B. is incorrect; the second law says only that the total entropy in a closed system increases. C. is correct, thereby disproving the theory evolution. D. None of these choices are correct