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An iron ball 5kg, 100°C is dipped in water 10 kg at 20°C. Find final temp ?

specific heat capacity

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An iron ball 5kg, 100°C is dipped in water 10 kg at 20°C. Find final temp ?


1 Answer


Here, 

mass of iron m1 = 5kg 

temp = 100°C

mass of water m2 = 10 kg

temp t2 =20°C

sp.heat of water S2= 4200 J/kg°C

sp. heat of iron S1= 470 J/kg°C

final temp T= ?? 

We know that, 

\(T=\;\frac{m_1s_1t_1+m_{2\;}s_2t_2}{m_1s_1+\;m_2s_2}\)

T = 1075000 / 44350 

T = 24.23 °C

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