A piece of iron of mass 2-0 kg has a thermal capacity of 966 J-0C- Find- i Heat energy needed to warm it by 150C- and ii Its specific heat capacity in SI unit

(i) nbsp;Given: nbsp;Heat nbsp;Capacity, nbsp;mC nbsp;= nbsp;966 nbsp;J/°CHeat nbsp;energy nbsp;required, nbsp;Q nbsp;= nbsp;m nbsp;× ...

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Standard X

Physics

Heat

A piece of ir...

Question

A piece of iron of mass 2.0 kg has a thermal capacity of 966 J/⁰C. Find: (i) Heat energy needed to warm it by 15⁰C, and (ii) Its specific heat capacity in SI unit

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Solution

$(i) G i v e n : H e a t C a p a c i t y, m C = 966 J / ° C H e a t e n e r g y r e q u i r e d, Q = m \times C \times c h a n g e i n t e m p e r a t u r e = 966 \times 15 = 14490 J (i i) Q = m \times C \times Δ T S p e c i f i c h e a t c a p a c i t y, C = \frac{Q}{m \times Δ T} = \frac{14490}{2 \times 15} = 483 J k g^{- 1} ° C^{- 1}$

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A piece of iron of mass 2.0 kg has a thermal capacity of 966 J/0C. Find: (i) Heat energy needed to warm it by 150C, and (ii) Its specific heat capacity in SI unit

(i) Given: Heat Capacity, mC = 966 J/°CHeat energy required, Q = m × C × change in temperature = 966 × 15 = 14490 J(ii) Q = m × C × ΔTSpecific heat capacity, C = Qm × ΔT = 144902 × 15 = 483 Jkg−1°C−1

A piece of iron of mass 2.0 kg has a thermal capacity of 966 J/⁰C. Find: (i) Heat energy needed to warm it by 15⁰C, and (ii) Its specific heat capacity in SI unit