December 1, 2015

Homework Help: Physic

Posted by Janice on Monday, June 6, 2011 at 9:27am.

Fan -- 15W
Heating elements -- 1.2kW
Mains -- 240
A) calculate the weekly cost of having the fan heater with the warm air setting on for 3hours each day. Assume that the cost of electricity is 0.25 cents per kWh.

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