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Physics, 18.05.2021 05:00 davelopez979

(b) A machine rated 2kW uses 20% of its power to heat up 40kg of iron. What will be the rise of
temperature of iron in 2 min (Specific heat
capacity of iron = 0.5 Jg='K-')
10​

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(b) A machine rated 2kW uses 20% of its power to heat up 40kg of iron. What will be the rise of
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