Physics, 17.09.2019 21:30 bryan9892

An electrical water heater (for room heating) held at 140of is kept in a 70of room. when purchased, its insulation is equivalent to r-5. an owner puts a 25-ft2 blanket on the water heater, raising its total r value to 15. assuming 100 percent conversion of electricity into heated water, how much energy (kwhr) will be saved each year? if the electricity costs 8.0 cents/kwhr, how much money will be saved in energy each year?

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An electrical water heater (for room heating) held at 140of is kept in a 70of room. when purchased,...