Is it possible for the gravitational potential energy of an object to be negative?
A. Yes
B. No
Ans: A. Yes
Physics & Space Science
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If the temperature of a sample of water at 4°C is slightly increased, its volume
A) increases. B) decreases. C) remains the same.
Physics & Space Science
An object has kinetic energy when it is __________
Fill in the blank(s) with correct word
Physics & Space Science
An electrostatic precipitator uses an electric field to remove smoke from the air
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
A 2.0-kg block is projected down a plane that makes an angle of 20° with the horizontal with an initial kinetic energy of 2.0 J. If the coefficient of kinetic friction between the block and plane is 0.40, how far will the block slide down the plane before coming to rest?
a. 3.0 m b. 1.8 m c. 0.30 m d. 1.0 m e. 1.3 m
Physics & Space Science