In a game of pool, the white cue ball hits the #5 ball and stops, while the #5 ball moves away with the same velocity as the cue ball had originally. Both balls have the same mass. This type of collision is
A) somewhat inelastic.
B) elastic.
C) completely inelastic.
B
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Briefly describe one of the three quandaries that are solved by inflation; that is, describe either the structure problem, the smoothness problem, or the flatness problem
What will be an ideal response?
A satellite orbits the Earth once every 6.0 hours in a circle. What is its angular velocity (in radians/s)?
What will be an ideal response?
What do we mean by the event horizon of a black hole?
A) It is the very center of the black hole. B) It is the place where X-rays are emitted from black holes. C) It is the point beyond which neither light nor anything else can escape. D) It is the distance from the black hole at which stable orbits are possible.
The concept that atoms tend to get eight electrons in their outer shell when forming molecules or ions is called the ______________
Fill in the blank(s) with correct word