Use a caliper to determine the diameter of a ping-pong ball, and then calculate the volume of the ping-pong ball. Determine the weight of the ping-pong ball. Determine the buoyant force that would act on the ping-pong ball when it is completely submerged in water. Compare the buoyant force on the ping-pong ball to the weight of the ping-pong ball. Use this comparison to explain why a ping-pong ball floats.

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc