Think back to the "Skate Park" Lab and how the skater rolled back and forth on the ramp when there was no friction. After he rolled up and down the ramp a few times,

how did the potential energy compare to the total energy at the bottom of the

ramp? Make sure you explain in your response whether energy is conserved or not in

the system. Make a claim answering the question, give evidence to support your

a

claim, and provide reasoning for your evidence supporting the claim.

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