tlng no 13&14 pakai cara......
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nuraisyahaprill5366
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tlng no 13&14 pakai cara......
1 Jawaban
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1. Jawaban hendrisyafa
13) m = 0,75 kg
Q1 = m c air. (100-20)
= 0,75. 4200. 80
= 252.000 J
= 252 kj
Q2 = m. U
= 0,75. 2270 kj/kg
= 1702,5 kj
Q = Q1 + Q2
= 252 + 1702,5
= 1954,5 kj
14) Q = mc^T + m.U
6,2.10^6 = 5.4200.(100-20) + m. 2,27.10^6
6,2.10^6 = 1,68.10^6 + m.2,27.10^6
6,2 = 1,68 + m. 2,27
m.2,27 = 6,2-1,68
= 4,52
m = 4,52/2,27
= 2 kg