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 a hypothesis for a Hooke''s Law experiment which was completed with a single, series and parallel spring arrangement?
Why is extended source use in Newtown ''s ring experiment?
Q. Define: the temperature coefficient of resistance. The ratio of raise in resistance per degree rise in temperature to its resistance at 0 o C is called as temperature coeff
Making a jam jar aquarium If a large glass tank is not available, practically any glass vessel can be used as a easy aquarium if it is well stocked with submerged water plants
how much force is necessary to stop the car when steps on a brake a 1000-kg car travelling at 65 km/h if the braking distance is 35 m?
Word Problems
Question: A positively-charged particle is travelling southward in a downward-directed uniform magnetic field. The magnetic force is the merely force if any acting on the parti
A helium nucleus and a neon nucleus are separated by a distance of 3.0 nm. The charge of the helium nucleus is +2e while that of a neon nucleus is + 10e .Find the magnitude of the
DRAW A GRAPH OF DISTANCE VERSUS TAN
Define the graded index multimode fibers intermodal dispersion specifically. In graded index fibers, the index of the core material slowly raises and turns into maximise at the
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