If you somehow increased Earth's radius, without changing its mass, would this affect your weight?
A) Yes, your weight would increase.
B) No, because your weight always remains the same regardless of how you change the external surroundings.
C) No, because the force of gravity on your body depends only on your mass and on Earth's total mass--it doesn't depend on Earth's size.
D) Yes, your weight would decrease.
D
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If a light signal and a radio signal were emitted simultaneously from Alpha Centauri, the first to reach Earth would be the
A) radio signal. B) light signal. C) both the same time
In composition, mass, and density, Jupiter is most like:
A) a huge comet. B) a gigantic asteroid. C) the Sun. D) a huge Kuiper belt Object. E) a large terrestrial planet.
A wheel is rotated about a horizontal axle at a constant angular rate. Next, it is rotated in the opposite direction with the same angular rate. The acceleration at a point on the top of the wheel in the second case as compared to the acceleration in the first case:
a. is in the same direction. c. is upward. b. is in the opposite direction. d. is tangential to the wheel.
Rills on the Moon are believed to have been caused by
a. moonquakes. b. meteorite impacts. c. volcanoes. d. expansion and contraction of the Moon's surface.