If you are talking about gravitational potential energy, then the ONLY way to either increase OR decrease it is to raise or lower your height. The higher you are off the ground the greater your PE, the closer you are to the ground, the lower your PE
Answer and working shown on photo, final answer for number electrons=2.5*10^17 electrons
Answer:
115.32125 m/s
Explanation:
Distance = 70 cm
Angular speed
Angular displacement
Time taken will be
Speed of the bullet would be
The speed of the bulletis 115.32125 m/s