SATII (關(guān)于聲波)
SATII (關(guān)于聲波)
A worker hits a metal pipe with a hammer.The ratio of the intensity of loudness as heard by people standing 100 meters away from the worker to the intensity as heard by people standing 200 meters away from the worker is
A 4:1
B 2:1
C 1:1
D 1:2
E 1:4
：A 請(qǐng)問有類似的公式什么的嗎?
A worker hits a metal pipe with a hammer.The ratio of the intensity of loudness as heard by people standing 100 meters away from the worker to the intensity as heard by people standing 200 meters away from the worker is
A 4:1
B 2:1
C 1:1
D 1:2
E 1:4
：A 請(qǐng)問有類似的公式什么的嗎?
英語(yǔ)人氣：140 ℃時(shí)間：2020-05-19 05:04:20
優(yōu)質(zhì)解答
聲學(xué)里有一個(gè)這樣的結(jié)論,P=(P0)/(R^2),此處P0為聲波發(fā)出時(shí)的強(qiáng)度,R指的是距聲源的距離.
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