The impact of meteorites on the Moon has caused
a. craters only.
b. rays only.
c. rills only.
d. both rays and craters.
d
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Air flows through a 1 cm diameter tube at 8 m/s. The air is at 40ºC and the tube is 100ºC. If the tube is 3.5 m long determine, a) the entrance length for developed flow and b) heat transfer to the air.
What will be an ideal response?
The energy released when a star explodes in a supernova can be more than the nuclear fusion energy produced by the same star throughout its entire lifetime.
Answer the following statement true (T) or false (F)
What is meant by the Astronomical Unit?
What will be an ideal response?
In the Northern Hemisphere, cyclones rotate ________; whereas an anticyclone rotates ________
A) counterclockwise around a low pressure center; clockwise around a high pressure center B) clockwise around a low pressure center; counterclockwise around a high pressure center C) counterclockwise around a high pressure center; clockwise around a low pressure center