Assuming there is no friction, determine the mechanical kinetic energy using Ek = Etotal - Ep. How do I get Etotal. The Ep's are 588,000 J and 470,000 J

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.