Q. Two large metal parallel plates carry opposite charges of equal magnitude. They are separated by 40.0 {rm mm}, and the potential difference between them is 360 {rm V}. a.) What is the magnitude of the electric field (assumed to be uniform) in the region between the plates? b.) What is the magnitude of the force this field exerts on a particle with charge 2.30 nC?
Q. A supertanker with the mass of 4.67 × 108 kg is moving with a constant velocity. Its engines generate a forward thrust of 8.71 × 106 N. Determine (a) the magnitude of the resistive force exerted on the tanker by the water and (b) the magnitude of the upward buoyant force exerted on the tanker by the water.