Jawabanmu

2014-05-06T09:52:09+07:00
Pakai asas black Qterima=Qlepas
m.c.deltaT = m.c.deltaT
300.c.(40-0) = M.c.(100-40)
karena c sama, coret aja langsung
300.40 = 60.M
12000 = 60M
M = 200 g
12 4 12
2014-05-06T11:21:16+07:00
Qlepas=Qterima
m1x(T1-T)=m2x(T-T2)
mx(100-40)=0,3x(40-0)
mx60=12
60m=12
m=0,2kg.
9 4 9