A 2.16-V battery is discharged at a constant current of 5, 40, and 120 A. The average voltages during discharge at these currents are 2.0, 1.9, and 1.87 V, respectively. The run time for the battery is 3600, 370, and 90 sec, respectively, at these currents. The weight of this battery is 460 g. (a) Calculate the power, specific power, and specific energy of this battery in watts, watts per kilogram, and watt hours per kilogram at 5, 40, and 120 A constant current.