Teko listrik diisi air sebanyak 1,5 kg. suhu air mula mula 20 °C dan kalor jenis 4.200 J/kg°C. apabila kalor yang diserap 378 kJ, suhu akhir air sebesar? A.50 B.60 C.80 D.100
6ilbert
Q = m . c . ΔT 378000 = 1,5 . 4200 . (T - 20) 3780 = 1,5 . 42 . (T - 20) 3780 = 63 (T - 20) 60 = T - 20 80°C = T
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rizaldorizkyra
Suhu= Q:(mxc) =378 x 1000 : 1,5x4200 =378000:6300 =60 C =20+60= 80 C (PILIHAN C)
378000 = 1,5 . 4200 . (T - 20)
3780 = 1,5 . 42 . (T - 20)
3780 = 63 (T - 20)
60 = T - 20
80°C = T
=378 x 1000 : 1,5x4200
=378000:6300
=60 C
=20+60= 80 C (PILIHAN C)