Two point charges are 4 cm apart. They are moved to a new separation of 8 cm. By what factor does the resulting mutual force between them change?
a. 1/4
c. 1/2
b. 2
d. 4
A
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The rate of cratering in the lunar highlands shows us that:
A) they must be younger than the older, darker mare. B) they range from 4.6-4.4 billion years old, on average. C) the largest impacts are the youngest, such as Copernicus and Tycho. D) the oldest rocks are at least as old as the mare, but some craters are much younger. E) most of the asteroids must have hit the Moon, not the Earth.
What are some observable consequences of the Earth's revolution around the Sun in relation to the zodiacal constellations?
What will be an ideal response?
If a nonzero torque is applied to an object, that object will experience:
a. a constant angular speed. c. a constant moment of inertia. b. an angular acceleration. d. an increasing moment of inertia.
List reasons that might explain
a. the success of some invading species. b. the failure of other invading species.