An archer pulls her bow string back 0.40 m by exerting a force that increases uniformly from zero to 240 N. What is the equivalent spring constant of the bow, and how much work is done in pulling the bow?
What will be an ideal response?
600 N/m, 48 J
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Suppose you see a photo showing Jupiter half in sunlight and half in shadow (that is, a first quarter Jupiter). This photo might have been taken by
A) a spacecraft orbiting Jupiter. B) the Hubble Space Telescope (which orbits Earth). C) the Keck telescope on Mauna Kea, Hawaii. D) the Arecibo radio telescope in Puerto Rico.
The most distant objects yet detected in the universe are
a. quasars. b. pulsars. c. superclusters. d. globular clusters.
Which type of force would be the equal and opposite force to a gravitational force?
a. gravitational b. electromagnetic c. strong d. weak e. It could be any one of the above or some combination of them.
Beyond our own solar system, the planets found to date have tended to be:
A) Kuiper Belt objects, far from the glare of their suns. B) large jovians far from stars like our Sun. C) large jovians with orbits more like terrestrial planets. D) terrestrials very close to their star, and transiting its disk. E) imaginary, with no present proof that they really exist.