SATII (关于声波)A worker hits a metal pipe with a hammer.The ratio of_英语解答

SATII (关于声波)
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 请问有类似的公式什么的吗?

人气：124 ℃　时间：2020-05-19 05:04:20

解答

声学里有一个这样的结论,P=(P0)/(R^2),此处P0为声波发出时的强度,R指的是距声源的距离.