Question

Air sebanyak 60 gram bersuhu 90°c dcampur 40 gram air bersuhu 25°c tntukan suhu akhir

Answer 1

Dik=
m₁= 60 gram = 6×10⁻² kg
t₁= 90°C
m₂= 40 gram = 4×10⁻² kg
t₂= 25°C
Dit= ta
Jwb=
Q₁=Q₂
m₁.c.Δt=m₂.c.Δt
m₁.(t₁-ta)=m₂.(ta-t₂)
6×10⁻².(90-ta)=4×10⁻².(ta-25)
5,4-6×10⁻² ta=4×10⁻²ta-1
0,1 ta =6,4 
ta=64° C