The parallax shift of a star would be greater if viewed from Mars than from Earth
Indicate whether the statement is true or false
TRUE
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Kirkwood gaps in the asteroid belt occur at distances where
A) the density of asteroids is high enough for a large collision to pulverize a number of asteroids. B) the period of an orbiting asteroid would be a simple fraction (like 1/3 or 1/4 ) of Jupiter's orbital period. C) the period of an orbiting asteroid would be the same as Mars's orbital period. D) the orbit would take the asteroid beyond the "frost line" in the solar system. E) the period of an orbiting asteroid would be the same as Jupiter's orbital period.
Which of the following is a weak base?
a. NH3 b. NaOH c. KOH d. Ca(OH)2
You ride on an elevator that is moving upward with constant speed while standing on a bathroom scale. The reading on the scale is
A) equal to your true weight, mg. B) more than your true weight, mg. C) less than your true weight, mg. D) zero. E) could be more or less than your true weight, mg, depending on the value of the speed.
The speed of a wave is the same as the speed of the particles displaced by the wave
Indicate whether the statement is true or false