The law you need is :
lets call the constant c = 4pi*epsilon naught*r2.
where r is radius ( or seperation of the charges). epsilon naught is a constant of about 8.85*10^-12 or something like that. and 4 pi is just 4 times pi.
the actual equation is
FORCE= (q1*q2)/c
Answer: i believe its B Find the velocity of each block after they have moved apart sorry
Explanation: have a nice day buddy
It is caused by she system letting off fumes and making gas pressure.
Answer: I think it would be Different atoms