Ignoring air resistance, which of these is the acceleration of a falling object?
a. The length of time it takes to reach the ground.
b. About 10 (meters per second) per second.
c. About 10 (meters per second) per meter.
d. About 10 meters per second.
e. Falling objects fall at different speeds, so none of these answers can be right.
b
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Indicate whether the statement is true or false
Which stars in globular clusters are believed to be examples of mergers?
A) brown dwarfs B) eclipsing binaries C) blue stragglers D) blue supergiants E) planetary nebulae cores
What is meant by spectral resolution?
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While gravity is always attractive, electromagnetic forces are always repulsive
Indicate whether the statement is true or false