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To jest najprostsze rozwiązanie (bilans cieplny):
2kg*(80C - 20C )*c=m*(100C - 80C )*c
120 = 20*m
m = 6 kg
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To jest najprostsze rozwiązanie (bilans cieplny):
2kg*(80C - 20C )*c=m*(100C - 80C )*c
120 = 20*m
m = 6 kg