Aproton is launched from an infinite plane of charge with surface charge density -1.10×10-6 c/m2. if the proton has an initial speed of 2.40×107 m/s, how far does it travel before reaching its turning point? 48.4 m 96.7 m 2.02×10-6 m 8.74×10-7 m

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.