Two plane mirrors, AB and BC are set up at right angles. ON is normal to the mirror AB. A ray of light XO is incident on AB as shown. It’s reflected at mirror AB and then travels on to the mirror BC where it is again reflected. Write down the following values:...

Which type of wave can travel without a medium

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Find the mass by adding the numbers from the three sliders