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

River boat vectors and projectiles, River Boat Vectors and Projectiles ...

River Boat Vectors and Projectiles Suppose the motion of the river boats below. Within that case, the boat is heading across the river. Inside the top case, the presence of a c

Calculate the thickness of the crystal, The refractive indices of a do...

The refractive indices of a double refracting crystal for extraordinary and ordinary ray are 1.584 and 1.592 respectively for wavelength 5600A 0 . Calculate the thic

What do you mean by additive nature of charges, Q. What do you mean by addi...

Q. What do you mean by additive nature of charges? Give an example. Additive nature of charge The entire electric charge of a system is equal to the algebraic sum of electric

What do you mean by leptons, Q. What are leptons? Give examples. Lep...

Q. What are leptons? Give examples. Leptons: Leptons are lighter particles having mass equal to or less than about 207 times the mass of an electron except neutrino an

What do you mean by ant reflecting films, Q. What do you mean by Ant reflec...

Q. What do you mean by Ant reflecting Films? When a beam of light travels normally from a medium of refractive index µ 2 to a medium of refractive index µ 1 , a part of light

Current electricity, if electrons are moving from east to west in a conduct...

if electrons are moving from east to west in a conductor is there a flow of current?

Optical microscopy, Determine whether you can examine a microstructure of d...

Determine whether you can examine a microstructure of dimension 10^(-3)mm distinctly with a magnifying lens of focal length 2cm,assuming that your eye has the average visual acuity

Explain electromagnetic waves transverse, Using the Maxwell's equation expl...

Using the Maxwell's equation explain that electromagnetic waves transverse in nature.

Define magic carpet (moscow phys-tech), Magic Carpet (Moscow Phys-Tech) ...

Magic Carpet (Moscow Phys-Tech) Once sitting in heavy traffic the Baron von Münchausen thinking of a new kind of "magic carpet" type aircraft. The top surface of the large flat

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