Question 8 0/1pts When you take a hot shower or run hot water on a faucet, the hot water that you use is being generated by a water heater. Residential water heaters typically work by maintaining a large tank of water (typically around 40-80 gallons) at a certain desired (hot) temperature, and when you use hot running water, some of that water is used. Conventional water heaters use gas as an energy source. This means that they take gas as an input, burn it to produce a flame, and use that flame to heat up the water in the tank. It's increasingly common, however, for homeowners and landlords to install much more efficient heat pump water heaters instead of gas water heaters. These water heaters use input energy (often electrical energy) to extract thermal energy from the ambient air and transfer thermal energy into the water, thus increasing its temperature. Jerimiah has just purchased a heat pump water heater for his house. He sets the heater so that the water in the tank is maintained at a temperature 123F while the surrounding air is at 86F. This requires the heater to take thermal energy out of the ambient air at a rate of 536 W. While heating the water in the tank, the water heater uses electrical energy at a rate of 356 W. At what percent of its theoretical maximum coefficient of performance is the water heater operating? 15.9 (with margin: 0.8)