Jawabanmu

Jawaban paling cerdas!
2014-05-04T16:39:50+07:00
Q = m . c air (t2 - t1)
Q = 0,5 kg . 4200 J/kgC (80 - 50)
Q = 0,5 . 4200 (50)
Q = 105000 J

Semoga bermanfaat :D
2014-05-04T16:40:33+07:00
Q = m.c.Δt
    = 0,5 kg x 4200 j/kgderajat C x 50
   = 105.000 joule
   - 105 kj