Question

Find the intensity of sound wave whose frequency is 250 hz. The

Answer 1

l=2(πfA)2ρv

And v =B/μ−−−−√

Where μ= mass per unit volume .

Hence v =20m/s

And I =2π2(250)2(10−8)220

I =2.46 x10−9W/m2

• wish that it will helpful to you