Jane slides a 800kg piano across the carpet with a coefficient of friction of 0.4. what is the magnitude of the force of friction acting on the piano?

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

overcharge is the right answer system

i will answer your question if you answer mine

e/c, where e is its total energy