A telescope with a large-diameter aperture or mirror will ________.
A. collect a lot of light and have high resolution
B. collect less light, and have poor resolution
C. collect a lot of light, but have poor resolution
D. collect less light, but have higher resolution
Answer: A
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A. 41, 52, 93 B. 41, 52, 41 C. 52, 41, 41 D. 41, 52, 0 E. 93, 41, 93
What evidence suggests that some of the stars in the halo of the Milky Way Galaxy came from mergers with other galaxies?
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While the gondola is rising at a speed of 2.0 m/s, a passenger in a balloon-supported gondola throws a small ball down at a speed of 5.0 m/s relative to his body. A person who measures the ball's velocity at the instant of release will find that the ball's velocity relative to the ground at that instant is
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Doubling the magnetic field in a proton synchrotron changes the maximum kinetic energy of the protons by what amount?
A. It is quadrupled. B. It is doubled. C. It remains the same. D. it is halved E. It is quartered.