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 $15^{0} C$ .

14490 J

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14500 J

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14150 J

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14300 J

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Solution

The correct option is A
14490 J

Mass of iron, m = 2.0 kg
Thermal Heat Capacity, $c^{'} = 996 J /^{0} C$
Rise in temperature, $T = 15^{0} C$
Heat energy needed $= c^{'} \times T$
$Q = 966 \times 15 = 14490 J$

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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 150C.

The correct option is A 14490 J Mass of iron, m = 2.0 kg Thermal Heat Capacity, c′=996J/0C Rise in temperature, T=150C Heat energy needed =c′×T Q=966×15=14490J

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 $15^{0} C$ .

The correct option is A
14490 J

Mass of iron, m = 2.0 kg
Thermal Heat Capacity, $c^{'} = 996 J /^{0} C$
Rise in temperature, $T = 15^{0} C$
Heat energy needed $= c^{'} \times T$
$Q = 966 \times 15 = 14490 J$