Author Question: According to the universal law of gravitation, if you double the masses of both attracting objects, ... (Read 29 times)

Destiiny22 · **on:** Jul 27, 2018

According to the universal law of gravitation, if you double the masses of both attracting objects, then the gravitational force between them will

A) not change at all.
B) increase by a factor of 2.
C) decrease by a factor of 2.
D) increase by a factor of 4.
E) decrease by a factor of 4.

Question 2

Suppose it turns out that one in 1 million stars has a planet that at some point in its history is home to an advanced civilization. Then the total number of civilizations that have arisen in our galaxy would be closest to

A) 4.
B) 40.
C) 400.
D) 4,000.
F) 40,000.
E) 400,000.