When you set a heavy bag down on the ground, you are doing negative work on it.
Answer:..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Volosity???????
Explanation: THINK THATS IT PROBABLY MISPELLED IT SORRY IN ADVANCE IF WRONG
The force between two parallel wires carrying currents in the same direction is attractive. It is repulsive if the currents are in opposite directions.
Fundamental frequency is the "base frequency" upon which the sound is built.