What is the kinetic energy of an 80 kg football player running at 8 m/s?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

How do the kidneys affect homeostasis