Assume a cup contains about 12 oz or 340 g of water at room temperature, about...

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Physics

Assume a cup contains about 12 oz or 340 g of water at roomtemperature, about 20 degree C. The electric kettle draws energyfrom the wall outlet at a rate (Power) of 990W. Draw a singleEnergy-Interaction Diagram for the process of bringing the water toa rolling boil. Choose an appropriate physical system, as well asan initial and a final point in time and indicate all initial andfinal conditions on your timeline. Explicitly state any otherassumptions you're making in words (incl. observations) and includean energy-conservation equation. Use your energy-conservationequation to calculate the amount of energy necessary to bring thewater to a rolling boil. Then use what you know about the power ofthe electric kettle to calculate how long it will take to bring thewater to a rolling boil (all water in liquid/gas mixed state).

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3.5 Ratings (559 Votes)

The energy diagram would be like the followingUsing first law of thermodynamicsSince there is no work in this system then internal energychange is equal to heat And under steadystate conditions See Answer

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