Capacity of the cooler's battery is 500 W& (recall 1 Wh is the amount of energy equal to one watt raultiplied by one hour). the air teMperature at the beach is 95F, cooler is maintaining an internal temperature of 10F. The operating efficiency of the cooler is 30% of its theoretical maximum, and if the heat pump system is outputting heat to the environment at a rate of 200 W, what percent of the battery is depleted every hour?