ACOUSTICS, Physics

Assignment Help:
* Question 1 :
Sound A has intensity 10 times the threshold if hearing : sound B has intensity 100 times the threshold of haring . How much louder do we perceive sound B ?

* Question 2 :
The distance from a point source of sound to the left ear is 2.00 m and the distance to the right ear is 2.01 m .
A) Estimate the differences in time between sound reaching the ears from this source .
B) Calculate the sound intensity at the right ear compared to at the left ear .

* Question 3 :
During a typical eight-hour workday , the average sound intensity arriving at Suzy''s ear is 1.8× 10-5 W/m2 . If the area of Suzy’s ear through which the sound passes is 2.1× 10-3 m2 , what is the total amount of sound energy entering her ear each workday ?

* Question 4 : ( Decibel scale – Calculation )
A) In dB , what is the differences between two intensities differing by factor of two , using the lower intensity as the reference ?
dB=10 log??10 ? (I2/I1) = 10 ?log?_10?× ((2×I_2)/I_1 )
B) A noise is measured at 2×10-3 W/m2 . What is this in Db ?
dB=10 log??10 ? (I2/I1) = 10 ?log?_10? ×((2×?10?^(-3) )/?10?^(-12) )

Related Discussions:- ACOUSTICS

Wave optics: oscillation of particle, In forced oscillation of a particle, ...

In forced oscillation of a particle, the amplitude is maximum for a frequency  ω1 of the force while  the energy is maximum for a frequency  ω2 of the force, then what is relations

Motion, motion mean laws of motion explain explian motion lesson

motion mean laws of motion explain explian motion lesson

Explain the vector addition of velocity, Explain the Vector Addition of Vel...

Explain the Vector Addition of Velocity Of course the velocity is relative to how you indicate the position d. If you are moving in water that is itself moving, then your full

Calculate the actual intensity, The threshold of hearing is 10 -12 watts/m...

The threshold of hearing is 10 -12 watts/m 2 or 0 dB.  How many times more intense than the threshold of hearing is 70dB and what is the actual intensity (in watts/m 2 ) at the 7

Explain phenomenon of scattering, Some phenomenon based on scattering: (...

Some phenomenon based on scattering: (i) Sky looks blue because of scattering. (ii)  At the starting time of sunrise or sunset sun looks reddish. (iii) Danger signals are

What are coherent sources, Q. What are coherent sources? Two sources a...

Q. What are coherent sources? Two sources are alleged to be coherent if they emit light waves of the same wave length and start with same phase or have a constant phase differ

Pressure, A base of rectangular vessel measures 10cm x 8cm.

A base of rectangular vessel measures 10cm x 8cm.

Explain gravitational lines of forces, Gravitational field can also be show...

Gravitational field can also be shown by lines of force. This is same in several ways as that of electric lines of forces. With one dissimilarity, electric charges are negative and

How is absorption occurred in fibre material, How is absorption occurred in...

How is absorption occurred in fibre material? Absorption is associated to the fibre material. It is caused by three diverse mechanisms, which are: a. Absorption by atomic de

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd