Yang nomor 4 tolong dong
Jawaban Terkonfirmasi
Dik : m = 1 kg
t1 = 30'C
Q = 45 Kj = 45.000 J
c = 900 J/kg'C
Dit : t2 ?
Jwb :
Δt = Q / m.c
(t2 – t1) = Q / m.c
(t2 – 30'C) = 45.000 J / 1 kg.900 J/kg'C
(t2 – 30'C) = 50'C
t2 = 50'C + 30'C
= 80'C ( D )
Jwbnnya ( D )