Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The threshold of hearing is 10-12 watts/m2 or 0 dB. How many times more intense than the threshold of hearing is 70dB and what is the actual intensity (in watts/m2) at the 70 dB level? Show the physics.
Solution:
The threshold of hearing is assigned a sound level of 0 decibels (abbreviated 0 dB); this sound corresponds to an intensity of 1*10-12 W/m2.
A sound that is 10 times more intense ( 1*10-11 W/m2) is assigned a sound level of 10 dB. A sound that is 10*10 or 100 times more intense (1*10-10 W/m2) is assigned a sound level of 20 db. A sound that is 10*10*10 or 1000 times more intense (1*10-9 W/m2) is assigned a sound level of 30 db. A sound that is 10*10*10*10 or 10000 times more intense (1*10-8 W/m2) is assigned a sound level of 40 db.
Hence a sound that is 10 ^ 7 (10 to the power of 7) or 10000000 times more intense (1*10-5 W/m2) is assigned a sound level of 70 db.
what is b.c.s theory?
What occurs to the power dissipation if the value of electric current passing by a conductor of constant resistance is doubled? Normal 0 false false false
The temperature of a body is measured indirectly by making use of the fact that certain physical property of a substance changes linearly with the temperature If the value of th
what is newtons law
Assumptions: Kinetic Energy=KE, Potential Energy=PE m=mass of the skateboarder=55 kg, Velocity v=1.80m/s So ,Initial Energy(KE) of the skateboarder=mv 2 /2 = 0.5* 55 * (1.8)^
Causes of Low power factor The major causes of low power factor in the electric supply system are as follows. Due to reactive load Most of the AC motors used in i
Q. Describe Compton effect. Drive an expression for Compton shift. How does it support the particle nature of light. Compton Effect and Quantum Nature of Light A.H. Com
Advance of the Perihelion Together along with the deviation of light rays near the Sun the change of the orientation of Mercury's orbit century after century is a single of the
Long, thin, pliable carpet is laid on the ?oor. One end of the carpet is bent back and then pulled backwards with constant unit velocity, just above the part of the carpet which is
Phenomenon of interference of water waves 1. Arrange two identical adjacent pins (S1 and S2) vibrating in a ripple tank with the same frequency. 2. In the figure S and S ar
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd