owen1159 owen1159

17-08-2022
Advanced Placement (AP)

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2. A kettle was tested for its energy efficiency. Its power rating was 900 W. The temperature of 1.0 L of
water increased from 24°C to 48°C in a time of 4 minutes and 30 seconds.
a. Calculate the energy efficiency of the kettle.
b. Why is the kettle not 100% efficient? What happened to the "missing" energy? |
I

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