the power rating

| January 30, 2015

Water is boiled at 1 atm pressure in a coffee maker equipped with an immersion-type electric heating element. The coffee maker initially contains 1 kg of water. Once boiling started, it is observed that half of the water in the coffee maker evaporated in 18 minutes. If the heat loss from the coffee maker is negligible, the power rating of the heating element is

(a) 0.90 kW

(d) 1.05 kW

(b) 1.52 kW

(e) 1.24 kW

(c) 2.09 kW

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heat transfer
Boundary Work for a Constant-Pressure Process

Category: Coursework

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