36是b
因为power 是watt
所以rate of change of power= Ws^-1
而power= work done over time
work done= energy
所以是rate of change of energy没错作者: 美国王子 时间: 2009-12-3 07:46 PM
原帖由 tcc0609 于 3/12/2009 07:40 PM 发表
36是b
因为power 是watt
所以rate of change of power= Ws^-1
而power= work done over time
work done= energy
所以是rate of change of energy没错