Temperature is a measure of
1.... the total amount of heat possessed by something.
2.... the flow of energy to or from something.
3.... the total energy possessed by something.
4.... the total kinetic energy of the constituents of something.
5.... the amount of useful work that could be extracted from something.
6.None of the above.
6
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Consider a two-slit interference experiment like the one shown in figure Q3.7b. The distance between adjacent bright spots in the interference pattern on the screen (A) increases, (B) decreases, or (C) remains the same if, (a) The wavelength of the light increases.
A. increases B. decreases C. remains the same
The angular momentum of an isolated object can be changed only by
A. applying a torque. B. changing its rotational inertia. C. applying a force along the axis of rotation.
A 6.0-kg object is suspended by a vertical string from the ceiling of an elevator which is accelerating upward at a rate of 1.8 m/s2 . Determine the tension in the string
a. 11 N b. 70 N c. 48 N d. 59 N e. 62 N
The apparent weight of a fish in an elevator is greatest when the elevator
a. moves downward at constant velocity. b. moves upward at constant velocity. c. accelerates downward. d. accelerates upward. e. is not moving.