Spring tides occur close to the time of ______________ moon
a. the new
b. the first-quarter
c. both the new and the full
d. the last-quarter
a
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A proton is to orbit Earth at the equator using Earth's magnetic field to supply part of the necessary centripetal force. In what direction should the proton move?
A) upward B) northward C) southward D) eastward E) westward
A spaceship with a constant velocity of 0.800c relative to Earth travels to the star that is 4.30 light-years from Earth. What distance does the space ship travel as measured by a passenger on the ship?
A) 2.58 light-years B) 3.52 light-years C) 4.12 light-years D) 4.30 light-years
Discuss the ring particles orbiting Jupiter, Saturn, Uranus, and Neptune
What will be an ideal response?
Why have very few planets with low mass (comparable to Mars or Mercury) been found?
A) These small planets are very rare. B) Low mass planets do not produce large enough radial velocity changes in their stars. C) High mass planets are blocking our views of low mass planets. D) Hot Jupiters have ejected most low mass planets from their solar systems. E) Low mass planets are too far from their parent stars to receive enough light to make them visible from Earth.