作者Laoda245566 ()
看板Chemistry
标题[问题] 量子力学一题
时间Sun Apr 6 12:47:29 2014
Suppose that you designed a spacecraft to work by
photon pressure. The sail was a completely absorbing fabric
of area 1.0 km^2 and you directed a red laser beam of wavelength 650 nm
on to it from a base on the Moon. What is the force?
我想从动量变化量去推
不过不知道时间的变数
请问这题该如何下手?
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1F：推 sunev:这比较像普物的问题，不过没给雷射强度怎麽算? 04/06 13:11
2F：→ Laoda245566:不知 这全部题目了 04/06 13:28
3F：→ o810418:学测还是模拟考我看过这种题目 要用动量下手.. 04/07 10:31
4F：→ o810418:没intensity就没得算了的样子吧QQ 04/07 10:32