Point charge 3.5 μc is located at x = 0, y = 0.30 m, point charge -3.5 μc is located at x = 0 y = -0.30 m. what are (a)the magnitude and (b)direction of the total electric force that these charges exert on a third point charge q = 4.5 μc at x = 0.40 m, y = 0?

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)