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**Show all forces, motion/free-body diagrams, calculations, equations, and work. *** A 120 V potential difference is applied to a space heater whose resistance is 17

**Show all forces, motion/free-body diagrams, calculations, equations, and work. ***

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A 120 V potential difference is applied to a space heater whose resistance is 17 0 when hot. (a) At what rate is electrical energy transferred to thermal energy? (b) What is the cost for 7.2 h at US$0.05/kW.h? (a) Number i Units (b) Number Units V

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