You push down on a 3.0 N box for 10 minutes. How much work was done?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.

Photons with the highest energy have the longest period