The mass of the Moon is about 1/80th of the mass of Earth. The force exerted by Earth on the Moon is about 80 times that exerted by the Moon on Earth.
Indicate whether the statement is true or false
Question 2
The length of a certain wire is doubled and at the same time its radius is increased by a factor of 4. What is the change in the resistance of this wire?
A) It is reduced by a factor of 8.
B) It increases by a factor of 8.
C) It is reduced by a factor of 4.
D) It increases by a factor of 4.
E) It stays the same.