1 ember air ber massa 17kg , memiliki suhu 25°c . Sebanyak 3kg air panas bersuhu 95°c dimasuk kan ke dalam ember tersebut . Berapa suhu campuran nya ?
hidayatNKF
Dik : m1 = 17 kg m2 = 3 kg Δt1 = 25'C Δt2 = 95'C Dit : t cam ? Jwb : m1.c1.Δt1 = m2.c2.Δt2 17 kg.( 25'C - t cam ) = 3 kg.( t cam - 95'C ) 425kg'C - 17 kg t cam = 3 kg t cam - 285 kg'C 425 kg'C + 285 kg'C = 3 kg t cam + 17 kg t cam 710 kg'C = 20 kg t cam t cam = 710'C / 20 = 35,5'C
m2 = 3 kg
Δt1 = 25'C
Δt2 = 95'C
Dit : t cam ?
Jwb :
m1.c1.Δt1 = m2.c2.Δt2
17 kg.( 25'C - t cam ) = 3 kg.( t cam - 95'C )
425kg'C - 17 kg t cam = 3 kg t cam - 285 kg'C
425 kg'C + 285 kg'C = 3 kg t cam + 17 kg t cam
710 kg'C = 20 kg t cam
t cam = 710'C / 20
= 35,5'C
maaf ya kalau salah