Which of the following triplets of macroscopic variables would not adequately specify a gas’s macrostate?
A. U, V, T
B. P, T, N
C. U, N, T
D. M, V, T
E. M, P, V
F. M, P, U
C. U, N, T
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Which of these was NOT a part of the original Copernican model?
A) The Sun lies at the center of the solar system. B) Mercury must move faster in its orbit than any other planet. C) The Earth rotates on its axis once a day. D) Venus can go all the way around the Sun. E) Mercury speeds up at perihelion, and slows down at aphelion.
A 3.50-kg block is pulled along a moving conveyor belt at a constant speed of 0.500 m/s relative to a stationary observer while the belt moves at a constant speed of 0.200 m/s in the opposite direction. If the coefficient of kinetic friction is 0.400, the magnitude of the mechanical energy dissipated, in J, caused by the force of friction on the block in 8.00 s is
A. 5.6. B. 22.0. C. 32.9. D. 54.8. E. 76.8.
Electric potential and electric potential energy are
A) one and the same in most cases B) Two terms for the same concept C) Both A & B D) None of these
Olbers's paradox is based on the assumption that the Universe began at some time in the past
Indicate whether the statement is true or false