Question

Ibu mencampur 2kg air yg suhunya 100°C dg 5kg air yg suhunya 30°C . Berapa suhu akh campuran?

Answer 1

Diket:
m1 = 2kg
t1 = 100'C
m2 = 5kg
t2 = 30'C

Ditanya; Suhu akhir campuran (tC).....?

jawab:

tC = (m1.t1 + m2.t2)/ m1+m2
tC = (2x100 + 5x30)/2+5
tC = (200 + 150) / 7
tC = 350/7
tC = 50'C

suhu akhir campuran adlh 50'C