Jawabanmu

2014-03-25T20:45:47+07:00
Q=mXcXΔt
Q=?
m=20gr c=0,5 t=-4
Q=20x0,5x-4
Q=-40 kalori
2014-03-25T20:49:40+07:00
Q = M x C x Δt
Q = 20 x 1 x 0,5
Q = 10