Time Dilation: You are a passenger on a spaceship. As the speed of the spaceship increases, you will observe
A. your watch slowing down.
B. your watch speeding up.
C. your watch losing time.
D. your watch gaining time.
E. nothing unusual about the behavior of your watch.
Answer: E
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During winter, the northern polar cap of Mars is made of
A) a layer of carbon dioxide ice B) a layer of water ice C) carbon dioxide ice overlaying water ice D) water ice overlaying carbon dioxide ice
A + 5.0-?C charge is moved from a negative to a positive plate of a parallel plate capacitor. In moving this charge 0.30 mJ of energy is used. What is the potential difference between the plates of this capacitor?
A) 60 V B) 81 V C) 55 V D) 23 V E) 0 V
For the geometry shown in the sketch below, determine the layout of nodes and control volumes. Provide a scale drawing showing the problem geometry overlaid with the nodes and control volumes. Explain how to derive the energy balance equation for all the boundary control volumes.
GIVEN
Cylindrical geometry shown in the figure.
FIND
(a) A reasonable layout of nodes and control volumes
SKETCH
What do we mean by a primitive meteorite?
A) a piece of rock that is essentially unchanged since it first condensed and accreted in the solar nebula some 4.6 billion years ago B) a meteorite that was discovered by primitive people C) a meteorite that fell to Earth at least 4 billion years ago D) a type of meteorite that is usually made mostly of high-density metals