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QR= 0,5 kg x 330.000
QR=165000
RS= MxCxΔt
RS=0,5 x 4200 x 40
RS= 84000
ST=MxCxΔt
ST= 0,5x4200x60
ST=126000
total = QR+RS+ST
= 165000+84000+126000
= 375000
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