A$2)$ An electric generator coupled to a wind turbine produces an average electric power output of $15\mathrm{.}0$ kW$.$ The power is used to charge a storage battery $($consider the battery to be the system of interest$).$ Heat transfer from the battery to the surroundings occurs at a rate of $1\mathrm{.}8$ kW while charging. If it requires eight $(8)$ hours to charge a battery, determine:a$)$ the total amount of energy in the battery $[$MJ$]$ and $[$kWh$\backslash ($identify this energy as$""),$b$)$ the value of the electricity stored in the battery, based on current SaskPower residential rates $[$$$1($exclude carbon pricing$),$c$)$ the "charging efficiency" of the battery $[\%].$