State Newton's second law in terms of momentum
What will be an ideal response?
The rate of change of momentum of an object is equal to the net force applied to it.
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During a total lunar eclipse,
a. the moon must be new. b. the observer must be in the path of totality. c. the moon's color will be affected by Earth's atmosphere. d. the moon must be at about its greatest distance from Earth. e. it must be near the time of one of the equinoxes.
A planetary nebula
a. produces an absorption spectrum. b. produces an emission spectrum. c. is contracting to form planets. d. is contracting to form a star. e. is the result of carbon detonation in a 1- star.
Pressure in a Liquid: As shown in the figure, fluid fills a container having several sections. At which of the indicated points is the pressure greatest?
A. A B. B C. C D. D E. The pressure is the same at each of the labeled points.
Compared with the photons of light that shines on glass, the emerging photons are
A) the same photons. B) different though identical. C) a mixture of being the same and different.