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A heater rated 3.5 kw is used to raise the temperature of 5 kg of water through 70° C. Calculate the time required. (specific heat...

      

A heater rated 3.5 kw is used to raise the temperature of 5 kg of water through 70⁰ C. Calculate the time required. (specific heat capacity of water is 4200 J/kg K). Give your answer in minutes.

  

Answers


joseph
Pt = Mc??
3500t = 5 x 4200 x 70
t= 5 x 4200 x 70/3500
t= 420s
t= 7 minutes

joseph rimiru answered the question on October 11, 2017 at 17:27


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