(4) a metal sphere with a charge of 1.0 × 10^−9 C <span>moved through a potential difference of 4.0 V would undergo the greatest change in electrical energy from the list. </span>
power = force x velocity ==> work done/time = force x velocity ==> 33750/t = force x 30 ==> force x time = 33750/30 ==> momentum(P) = 1125 kg-m/s ( since force = momentum/time). P = m x v ==> m= P/v = 1125/30 =37.5 kg.
If you mean nuclear, fission is a radioactive isotope losing protons or "radioactive decay"
whereas nuclear fusion is where 2 atoms hit each other and combine,
like on the sun where hydrogen hits each other and makes helium.
A 13-kg sled is moving at a speed of 3.0 m/s. At which of the following speed will the sled have twice as much kinetic energy?
4.2 m/s