Which of these vary for satellites in elliptical orbits?
A) speed.
B) momentum.
C) kinetic energy.
D) all of the above
E) none of the above
Answer: D
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At which of the following temperatures would we expect gas molecules to have half the energy that they have at 100.°C?
A) 93. K B) 50.°C C) -86.°C D) -56.°C E) 323. K
The statement "It will be 87°F today" is an example of what
What will be an ideal response?
A heater is rated at 1200 watts for a 120-volt source.The current drawn by the heater is __________
Fill in the blank(s) with correct word
Suppose you are sitting at the origin of an inertial reference frame. You see (that is, you receive the light from) an event E occurring near a clock at x = -30 ns at a time t = 80 ns. When do you observe that event to occur?
A. tE = 0 B. tE = 30 ns C. tE = 50 ns D. tE = 80 ns, of course E. tE = 110 ns F. Some other time (specify)