Answer:
A. 70 m OS the correct one
Answer:
No.
Explanation:
The force that two particle experience is inversely proportional to the sqare of the distance, this is:
for a distance D
If we move them so that D is doubled:
=
Then the force they experience is one fourth of the original.
a substance's density is the same at a certain pressure and temperature, and the density of one substance is usually different than another substance.