Q1 = Q - A
A = ηQ
Q1 = Q - ηQ = Q(1-η) = 20000 × 0,6 = 12000 Дж = 12 кДж
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Q1 = Q - A
A = ηQ
Q1 = Q - ηQ = Q(1-η) = 20000 × 0,6 = 12000 Дж = 12 кДж