Question

3.3.2 test (cst): forces
question 16 of 20
which force holds distant stars and other matter together in a galaxy?
a. gravitational
b. electromagnetic
c. strong nuclear
d. weak nuclear

Explanation:

Gravitational force is the force that acts between any two masses. In a galaxy, the gravitational force between stars and other matter keeps them together. Electromagnetic force acts between charged particles. Strong nuclear force holds the nucleus of an atom together. Weak nuclear force is involved in radioactive decay.

Answer:

A. Gravitational