(d) Define a function Recharge that sets a battery of type BatteryModel representing the present energy reserve to its maxi- mum capacity. The following formula are to be used in your design: p = vi p is the power in watts (W) v is the voltage in volts (V) i is the current in amps (A) w is the energy in joules (J) t is the time in seconds (s) w = pt (e) Create a main function that tests your functions by creating a 12-V automobile battery object of type BatteryModel, that has a maximum energy storage of 5 106 J. Use the battery to power a 4-A light for 15 minutes. Then find out how long the battery's remaining energy could power an 8-A device. Then find out how long the battery's remaining energy could power an 8-A device. After recharging the battery, ask again how long it could operate an 8-A device.