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    The mass of paint on a wide body aircraft is 207 Kg.During times of high fuel prices or fuel shortages,the suggestion is made to remove the paint from the airplanes as an energy saving strategy during take-off.The mass of these aircraft is 395,000 Kg.The planes typical fly at an altitude of 29 Km and at a velocity of 230 m/s.Determine the energy savings by removing the paint per take off.
    英語人氣:559 ℃時間:2020-09-04 00:29:20
    優(yōu)質(zhì)解答
    如果去掉飛行器上的漆,飛行器的每次起飛可節(jié)省的能量是:節(jié)省的重力勢能:Ep=mgh=207*10*29000= 6*10^7J節(jié)省的動能:Ek=1/2mv^2=1/2*207*230*230=5.5*10^6J每次起飛節(jié)省的總能量:E=Ep+Ek=6*10^7J+5.5*10^6J=6.55*10...還有兩道題請幫我解答一下 謝謝題在哪呢?
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