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An electric kettle rated 2000 W takes 20 minutes to heat 30 kg of a liquid from 30° C to 45°C.

      

An electric kettle rated 2000 W takes 20 minutes to heat 30 kg of a liquid from 30⁰ C to 45⁰C.

  

Answers


joseph
Pt = mc??
2000 x20 x 60 = 30 x c x (45° -30°)
2400000 = 450c
= 5333.33Jkg^-1K^-1

joseph rimiru answered the question on October 11, 2017 at 17:21


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