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Determine resistance of an oven and the current drawn by the oven, and finding the time necessary to heat 400 mL of water.

A 1300 W microwave oven is connected to a 120 V source. (a) What is the resistance of the oven? (b) How much current does the oven draw? (c) How long will it take to heat 400 mL of water from room temperature at 20°C to boiling at 100°C? (Suppose 80 percent efficiency) (d) How much would this cost at 13 cents/where? (Specific heat of water: 4.186 J/g/K)

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