1.

Two bodies of specific heats ci and c2 having same heat capacities are combined to form a single composite body. What is the specific heat of the composite body?

Answer»

Here is your answer,

As the heat capacities are equal , so m₁C₁ = m₂C₂

Let C be the specific heat of the composite body. Then,

(m₁ + m₂) C = m₁C₁ + m₂C₂

= m₁C₁ + m₁C₁ = 2 m₁C₁

C = 2 m₁C₁/m₁+ m₂ = 2 m₁C₁/ m₁ + m₁ + m₁ C₁/C₂

= 2 C₁C₂/C₁ + C₂



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