(e) A particle of mass 2m at rest decays to two identical particles each of mass m that move in opposite directions away from the decay position at a speed of 0.5.
A. C
B. F
B. F
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A large, metallic, spherical shell has no net charge. It is supported on an insulating stand and has a small hole at the top. A small tack with charge Q is lowered on a silk thread through the hole into the interior of the shell. The tack is now allowed to touch the interior surface of the shell. After this contact, what is the charge on the tack?
1.Q 2.Q/2 3.0 4.-Q/2 5.-Q
Thin Lenses: A slide projector is set up with its lens 6.0 m from the screen. The projected image on the screen is 1.5 m square for a slide (the object) that is 2.5 cm square.(a) How far is the slide from the lens?(b) What is the focal length of the projector lens?
Fill in the blank(s) with the appropriate word(s).
Valles Marineris on Mars is
A) about as long and deep as the Grand Canyon on the Earth B) much longer and deeper than the Grand Canyon on Earth C) much shorter and shallower than the Grand Canyon on Earth D) much longer but not as deep as the Grand Canyon on Earth
Why do spirals seem to be more abundant on the HST deep surveys than they are in the present universe?
What will be an ideal response?