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Q1.
The photograph below shows a coffee machine. The coffee machine uses an electric element to heat water.
(c) The coffee machine heats water from 20 °C to 90 °C.
The power output of the coffee machine is 2.53 kW.
The specific heat capacity of water is 4200 J/kg °C.
Calculate the mass of water that the coffee machine can heat in 14 seconds.
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Mass = ____________________ kg (5)
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P=I×V
I=P/V
= 2530/230
I=11A

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