Question

A 2kg block is made of metal that has higher specific heat capacity than the metal out of which a 1kg block is made. The 2kg block was originally at 50oc and the 1kg block at 20oc. When the two blocks are placed in contact , what will the final equilibrium temperature be?

Answer 1

Answer:

Given : S=400Jkg  

−1

C  

−1

  and  L  

f

​  

=3.5×10  

5

Jkg  

−1

 

Mass of copper block  m=2kg

Heat released by the copper block is equal to the heat gained by the ice to melt.

Let the mass of the ice melted be M.

Change in temperature of copper block  ΔT=500−0=500  

o

C

∴  mS(ΔT)=ML  

f

​  

 

Or  2×400×500=M×3.5×10  

5

 

⟹  M=1.14k

Explanation: