1. An object with +500 uC charge is pushed toward a positively charged plate. 0.06 Joules of energy are expended in pushing the charge. What is the electrical potential difference in the field between the charged object and the plate?

2. A charge q = - 2.0 C moves in the opposite direction of a uniform electric field of 100 V/m by a distance of 3.0m. a. The charge is at a point of (a. higher, b. lower, c. same) potential before moving. b. After moving, the potential energy of the charge a. increases. b. decreases. c. does not change. c. What is the change in the potential energy?

A proton has the same magnitude of charges as an electron, but the mass of a proton is almost 1000 times that of the electron. Both the proton and electron are sped up from rest through 100V of voltage. a) which has more energy? The proton or the electron? Explain why b) which has a higher speed? The electron or the proton. Explain why

A metallic sphere with a radius of 0.11 m has been charged to +39 V. A particle with mass 2.5 x 10 kg and charge -4.4 µC is released from rest at a position that is 0.79 m away from the center of the charged metal sphere. What is the mechanical energy of this system? What will the electric potential energy of this system be when the particle reaches the surface of the sphere? What will the kinetic energy of the particle be when it reaches the surface of the sphere? What will be the speed of this particle when it reaches the surface of the sphere?