Why is it easier to locate meteorites in Antarctica than anywhere else on Earth?
a. Antarctica is an easy location for humans to access
b. More scientists are in the area to find meteorites.
c. When meteorites land, they melt a small crater on the ice.
d. Meteorites are easy to detect on top of the ice where there are no Earth rocks.
e. Meteorites fall most often through the ozone hole above the South Pole.
d
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A rock bed used for thermal storage has washed rocks of ½ inch nominal diameter. The bed is 5 feet high, 5 feet wide and 8 feet long. One thousand cubic feet per minute (cfm) of air passes vertically through the rock bed. Estimate the convective heat transfer coefficient for the air/rock bed under this flow condition.
What will be an ideal response?
The speed of sound in water is 4.3 times the speed of sound in air. A whistle produces a sound wave in air with a frequency 
When this sound wave enters the water, its frequency becomes
A. 4.3 
B. 
C. 
D. not enough information
The mass of an apple on the Earth is 0.2 kg. On the Moon, the mass of the same apple would be
A. greater than zero but less than 0.2 kg. B. greater than 0.2 kg. C. 0.2 kg. D. zero.
As a treatment for cataracts (a cloudiness of the lens of the eye), the natural lens is removed and a plastic lens is implanted. After this is done a person can see distant objects clearly, but he cannot accommodate to focus on nearby objects
If such a person wanted to read a book at a distance of 25 cm, he would have to wear contact lenses having a diopter power of A) +2.78 diopters. B) +3.33 diopters. C) -1.78 diopters. D) +4.00 diopters. E) -4.00 diopters.