Kinetic theory+Wave motion
2012-12-29 6:40 pm
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回答 (1)
2012-12-29 10:50 pm
✔ 最佳答案
1 PV = nRTP' = 2P, n' = n/2
P'V' = n'RT
2PV' = (n/2)RT
V' = nRT/4P = V/4
So, the height will be quartered of the original height
9 v = f λ
We can see that the distance from A to I forms a wavelength
(As they both move -1 cm at time t)
So, λ = 8 cm
16m/s = f * 8cm
f = 1600/8 = 200 Hz
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121229000051KK00076