Thermo

Ans2
How to calculate final temp?

@piyushd
T final=T1+T2 /2
dS=dS1+dS2
= Cp ln (Tfinal/T1) + Cp ln ( Tfinal/T2)
=Cp ln (Tfinal^2/ T1 T2)

@nukitapuyol
Why t1+t2 /2??

airhtmetic mean will be final temperature.

@piyushd ms(TT1)=ms(T2T)