The average kinetic energy of the molecules in a gas is a measure of
a. volume.
b. density.
c. temperature.
d. heat content.
c
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An object is 12 cm in front of a concave spherical mirror, and the image is 3.0 cm in front of the mirror. What is the focal length of the mirror?
A) 0.25 cm B) 15 cm C) 4.0 cm D) 2.4 cm E) 1.3 cm
The planets with known rings are Saturn, Neptune, ______________, and Jupiter
Fill in the blank(s) with correct word
True or False: A photon is reflected from a mirror. Because a photon has zero mass, it does not exert a force on the mirror
1.True 2.False
Assuming that no energy is lost in the form of heat, after the ball compresses the spring shown here, what is the maximum potential energy it may once again attain?
a. 0 J. b. 5 J. c. 2.5 J. d. Significantly less than 5 J because of energy lost as heat because of friction. e. Significantly less than 2.5 J because of energy lost as heat because of friction.