An automobile battery has a terminal voltage of approximately 12 V when the engine is not running and the starter motor is not engaged. A car is parked at a picnic with the stereo playing, which requires 60 W, and some lights on, which require 120 W. With a load of this type, the battery will supply approximately 1.2 MJ of energy before it will no longer start the car. What is the approximate amount of time that the car can remain parked with the lights on and the stereo playing and still start