Explanation:
I want to say option B - Both forces can act without objects touching.
Answer:

Explanation:
We are given that
Gravitational force=
r=0,U(0)=0
We know that
Gravitational potential energy=


Substitute r=0 ,U(0)=0


Substitute the value

I think number 1 is incorrect I believe that answer is D. Number 6 I believe would be B. The rest seem to be correct.
Answer:mass of the object,how much force earth exerts on the object,and shape of the object
Explanation:
Answer:
volume measured by pid^3 over 6 i think
Explanation: