Q1. If a disco disk is rotating with a person on it on the outer side, then if he moves inside (towards the center), the angular velocity will change-How will the energy be conserved?
Q2. a. What strength of electric field does a proton produce at the distance of another proton 5.0^-15m away?
b. What strength of electric field does this proton produce at the distance of the electrons, approximately 5.0^-10m away?