The average amount of energy falling on the Earth each second from the Sun corresponds to the energy output of fourteen 100-watt light bulbs for each square meter at the Earth's equator at noon. At the distance of the Earth, the energy from the Sun is 1400 watts per square meter or 1400 joules of energy per second per square meter (a watt is a unit of energy per second, a joule is a unit of energy). This much energy flows outward from the Sun in each square meter of the surface of a sphere with a radius equal to the distance of the Earth from the Sun (1 AU, 1.5 x 108 km or 1.5 x 1011 meters). How much total energy does the Sun produce each second