Electric current is passed through a copper ball 1 mm in diameter. The ball is submerged in liquid water at atmospheric pressure, and the current is increased until the water boils. For this situation...

Electric current is passed through a copper ball 1 mm in diameter. The ball is submerged in liquid water at atmospheric pressure, and the current is increased until the water boils. For this situation h=5000W/m2 oC. How much electric power must be supplied to the wire to maintain the ball at 114o