a car owner forgets to turn off the headlights of his car while it is parked in his garage. if the 12.0-V battery in his car is rated at 90.0A*h and each headlight requires 36.0W of power, how long will it take the battery to completely discharge?
90 Ah * 12 V = 1080 Wh
1080 Wh / (2 * 36 W) = ? h