Question

Tolg dijawab yg nomor 3 y

Answer 1

Nomor 3 
Diketahui :
m = 250 gr = 0,250 kg
To = 20 C
Tt = 100 C
c = 4200 J/KgC
Ditanyakan : Q ?

Dijawab :
Q = m  x c x (Tt-To)
    = 0,250 x 4200 x (100-20)
    = 0,250 x 4200 x 80
    = 84.000 J
jawaban B