WebbW = Q h − Q c. Efficiency of a heat engine. e = W Q h = 1 − Q c Q h. e = W Q h = 1 − Q c Q h. Coefficient of performance of a refrigerator. K R = Q c W = Q c Q h − Q c. K R = Q c W = Q … WebbPHYSICS FORMULA LIST . 1.5: Centre of Mass and Collision Centre of mass: x cm = P Px i m i m i; x cm = R Rxd dm CM of few useful con gurations: 1. m 1, m 2 separated by r: m 1 …
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