Uranus and Neptune have methane clouds but Jupiter and Saturn do not. Which factor explains why?
A) The stronger gravity on Jupiter and Saturn pulls methane downward so that it can't form clouds.
B) Jupiter and Saturn do not contain any methane gas.
C) The rapid rotation of Jupiter and Saturn prevents methane clouds from forming.
D) Temperatures on Jupiter and Saturn are too high for methane to condense.
D
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A proton, moving east, enters a magnetic field. Because of this magnetic field the proton curves downward. We may conclude that the magnetic field must have a component
A) towards the south. B) towards the north. C) towards the west. D) upward. E) downward.
Angular momentum is conserved for a satellite in
A) circular orbit. B) elliptical orbit. C) both of these D) neither of these
A motionless object could have
A) elastic energy. B) kinetic energy. C) speed. D) All of the above. E) None of the above.
Most of the light we see coming from the Sun originates in the ____________________
Fill in the blank(s) with correct word