You find net charge by subtracting the number of electrons from the number of protons (since protons are positive and electrons are negative). 9 - 10 = -1
The transfer of energy is potential energy to kinetic energy. The swing has potential energy when she pulls it back and once she lets go, allowing the swing to move, it then has kinetic energy.
Answer:
B) The amount of time the torque is applied to the disk, because the time interval is related to the angular impulse of the disk.
Explanation:
Angular impulse = Torque x time
= change in angular momentum
So,
Torque x time = change in angular momentum
change in angular momentum = Torque x time
Torque is already known .
Hence to know the change in angular momentum what is needed to know is time duration of torque acting on the body .
