It would need to be over 20 because if the load of the Pulley E is 20 and the effort is 20, then they will be equal and the Pulley would not move, so your answer is at least 20
Answer:
The force between the charges are not affected.
Explanation:
Given;
distance between two equal charges, R = 2m
The force between the charges is given by;
Therefore, the force between the charges are not affected.
Im not 100% about this. its kind of confuseing. but my guess is: (D. question-wording bias. <-------
Hope i helped!:)
The wind-mill is taking kinetic energy out of the moving air that spins it, and uses that energy to do things. It may pump water up out of the ground, it may turn a big stone to grind wheat, or it may turn an electric generator to turn the energy it collects into electrical energy.
