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Grade 11Thermal Physics

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Question image for 2 litre water at 27°C is heated by a 1kW heater in an open container.
Profile image of Preeti
8 Years agoGrade 11
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1 Answer

Profile image of Dhyaan
8 Years ago
Heat energy gained by water =(power suplied-rate of heat loss)*time
Time=[4184*( 77 - 27) * 2 *10 ^- 3 *1000]/(1000-160)~8 minutes 20 seconds
 

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