A piece of iron of mass $2.0 k g$ has a thermal capacity of $966 J K^{- 1}$ . Find the heat energy needed to warm it by $15^{o} C$ .

14490 J

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278200 J

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28980 J

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556400 J

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Solution

The correct option is A $14490 J$
It is given: $m c = 966$
Also, $Q = m c Δ T$
Heat energy needed is $Q = m c Δ T = 966 \times 15 = 14490 J$

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A piece of iron of mass 2.0 kg has a thermal capacity of 966 JK $^{- 1}$ . Find the heat energy needed to warm it by $15^{0} C$ .

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A piece of iron of mass 2.0 kg has a thermal capacity of 966 JK−1. Find the heat energy needed to warm it by 15oC.

The correct option is A 14490 JIt is given: mc=966Also, Q=mcΔTHeat energy needed is Q=mcΔT=966×15=14490 J

A piece of iron of mass $2.0 k g$ has a thermal capacity of $966 J K^{- 1}$ . Find the heat energy needed to warm it by $15^{o} C$ .

The correct option is A $14490 J$
It is given: $m c = 966$
Also, $Q = m c Δ T$
Heat energy needed is $Q = m c Δ T = 966 \times 15 = 14490 J$