The standard exam page is 8.50 inches by 11.0 inches. Its area in cm2 is
A. 19.5.
B. 36.8.
C. 93.5.
D. 237.
E. 603.
Answer: E
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Astronauts approaching a black hole would observe that _____
a. time appears to slows down for them b. time appears to speed up for external observers c. they become squashed flat - their heads and feet are pushed together by gravitational tides d. they become stretched thin - their heads and feet are pulled apart by gravitational tides e. nothing appears to change
Heating due to the greenhouse effect is caused by the fact that our atmosphere lets
A. infrared wavelengths in but prevents heat loss at visible wavelengths B. visible light through but prevents heat loss at longer (infrared) wavelengths C. visible light through but prevents heat loss at shorter (ultraviolet) wavelengths
What special type of information is yielded only by eclipsing binary stars?
What will be an ideal response?
If an electron is accelerated from rest through a potential difference of 100 V, what is its de Broglie wavelength?
A. 
B. 
C. 
D. 
E. 