Two copper blocks, each of mass 1.98 kg, initially have different temperatures,t₁ = 17° C and t₂ = 27° C. The blocks are placed in contact with each other and come to thermal equilibrium. No heat is lost to the surroundings.

(a) Find the final temperature of the blocks.

 °C

Find the heat transferred between them.

 J

(b) Find the entropy change of each block during the time interval in which the first joule of heat flows.

ΔS₁=  

 J/K ΔS₂=  

 J/K 

(c) Estimate the entropy change of each block after it has reached thermal equilibrium. Use each block's average temperature during the process in calculating the estimated values of ΔS.

ΔS₁=

J/K ΔS₂=

J/K