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

Retardation plate, what do you mean by retardation plates?explain their fun...

what do you mean by retardation plates?explain their functioning by taking an example of a quarter wave plate

Define q- factor, Q. Define: Q- factor. The Q factor of a series reson...

Q. Define: Q- factor. The Q factor of a series resonant circuit is described as the ratio of the voltage across a coil or capacitor to the applied voltage. That is Q = voltag

How height and pressure affect the boiling point of water, Q. How does the ...

Q. How does the height and air pressure affect the boiling point of water? Answer:- The only factor that finding the boiling point of water at any altitude is the barometr

Projectile, derive an expression for time of flight of horizontal projectil...

derive an expression for time of flight of horizontal projectile

Explain what is free fall acceleration, Q. Explain what is free fall accele...

Q. Explain what is free fall acceleration? Answer:- On earth free drop acceleration is 9.81 meters per second per second or 32.2 feet per second per second not including a

What are the three particles that make up an atom, What are the three parti...

What are the three particles that make up an atom? Atoms are made up of electrons, protons, and neutrons. The protons and neutrons are found together in the core of the atom, k

Which is equal to work, Work is equal to which of the following? a) T...

Work is equal to which of the following? a) The cross product of force and displacement. b) The product of force times time c) Force divided by time d) The dot

Temperature coefficient of resistance, Ask question #Minimum 100 words how ...

Ask question #Minimum 100 words how is temperature coefficient of resistance helpful to mankind?accepted#

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