A uniform solid disk (=1/2^2) and a hoop (=^2) with different masses and radii are placed at the top of an inclined plane. They are both released from rest and then roll without slipping. What is the ratio of the speed of the hoop to the speed of the disk at the bottom of the inclined plane?

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.)

less than one you can't create energy

im sorry i dont know