The difference in the Moon's gravitational force on the near and far sides of the Earth produces a(n) ________
Fill in the blank(s) with correct word
tidal bulge
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What are the advantages in placing the James Webb Space Telescope so far from Earth? Choose all that apply.
A.It will be closer to the objects it seeks to observe. B.There will not be any atmospheric interference. C.Light from the objects it observes will arrive at the telescope more quickly. D.Only a small portion of the sky will be blocked by Earth. E.It is unlikely to be hit by orbiting debris.
How could the Universe be accelerating, despite the gravitational pull of all the matter in it?
A.) There's no friction in space. B.) There could be less dark matter than we think. C.) There could be a new force or property of space that affects the Universe on its largest scales. D.) Our laws of nature are incorrect. E.) Probably B and C.
A scuba diver has his lungs filled to half capacity (3 liters) when 10 m below the surface. If the diver holds his breath while quietly rising to the surface, what will the volume of the lungs be (in liters) at the surface? Assume the temperature is the same at all depths. (The density of water is 1.0 × 10^3 kg/m3.)
a. 5.9 b. 4.5 c. 6.4 d. 3.9 e. 3.1
The force of gravity does work on a satellite when it is in
A) circular orbit. B) elliptical orbit. C) both of these D) neither of these