The internal energy of an ideal gas is changed by adding heat Q to the system and also by doing work W on the gas. What is the change in internal energy of the gas?
A)
4.186Q - W
B)
Q - 4.186W
C)
W - Q
D)
Q + W
E)
Q - W
D
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An observer's nadir is
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Which statements must be true about the surface of a charged conductor in which no charge is moving? (There could be more than one correct choice.)
A) The electric field is zero at the surface. B) The electric potential of the surface is zero. C) The electric field is constant at the surface. D) The electric potential is constant over the surface. E) The electric field is perpendicular to the surface.
With no air resistance a projectile fired horizontally maintains its horizontal component of velocity because
A) no forces act on it. B) no horizontal forces act on it. C) of no initial vertical component of velocity. D) all of the above E) none of the above
The units on the Hubble constant are ____________________, as listed in this chapter
Fill in the blank(s) with correct word