英文数学题,不算很难,有点偏物理,关于能的转换的.
英文数学题,不算很难,有点偏物理,关于能的转换的.
An ailiner of mass 300 tonnes is powered by four engines,each developing 15000kW.Its speed at take-off is 75m/s,and it takes 11 minutes to reach its cruisting speed of 210m/s at a height of 10000 metres.Cauculate the work done against air resistance during the climb.
请告知计算结果
An ailiner of mass 300 tonnes is powered by four engines,each developing 15000kW.Its speed at take-off is 75m/s,and it takes 11 minutes to reach its cruisting speed of 210m/s at a height of 10000 metres.Cauculate the work done against air resistance during the climb.
请告知计算结果
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