[題目] halliday 8th的題目請幫忙謝謝!!

看板Physics作者degraded (事與願違的遺憾)時間18年前 (2007/10/19 21:34)推噓2(2推 0噓 1→)

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[領域] 力學 (題目相關領域) [來源] halliday 8th (課本習題、考古題、參考書...) [題目] Calculate the ratio of the drag force on a jet flying at 963 km/h at an altitude of 8.4 km to the drag force on a prop-driven transport flying at half that speed and altitude. The density of air is 0.47 kg/m3 at 8.4 km and 0.72 kg/m3 at 4.2 km. Assume that the airplanes have the same effective cross-sectional area and drag coefficient C. [瓶頸] (寫寫自己的想法，方便大家為你解答) 不好意思題目有點長我想請問這個題目是在問什麼以及要怎麼解因為本身學校物理還沒有教到怎麼算 drag force 但是有朋友拿這個題目問我希望板上的高手能幫忙謝謝!! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.117.183.62

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elle0001tw

10/20 01:32, , 1^F

10/20 01:32, 1^F

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degraded

10/20 09:56, , 2^F

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kkkk123123

10/20 17:42, , 3^F

10/20 17:42, 3^F