4. An Electric Water Heater draws 65 A from a 400 V generator source. The heater is operated on the average 9 hours every day. a) How much power does the heater consume? b) How much energy in KWH does the heater consume in three weeks ( 21 days)? c) At \( \$ 0.17 \) per KWH, how much does it cost to operate this heater for three weeks ( 21 days) period d) This same Electric Water Heater is being used to heat 5.0 Kg of water for industrial purpose every 4 minutes. If \( 80 \% \) of the heat during the 4 minutes is absorbed by the water, what is the change increase in the water temperature during this period of time? Cp of water \( =4180 \mathrm{~J} / \mathrm{Kg}^{\circ} \mathrm{C} \)
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