[tex]Dane:\\m = 200 \ g = 0,2 \ kg\\c = 850\frac{J}{kg\cdot^{o}C}\\T_1 = 74^{o}C\\T_2 = 82^{o}C\\\Delta T = T_2-T_1=82^{o}C - 74^{o}C = 8^{o}C\\Szukane:\\Q = ?\\\\Rozwiazanie\\\\Q = m\cdot c\cdot \Delta T\\\\Q = 0,2 \ kg\cdot850\frac{J}{kg^{o}C}\cdot8^{o}C \\\\\boxed{Q = 1 \ 360 \ J = 1,36 \ kJ }\\\\(1 \ kJ = 1000 \ J)[/tex]
