subject
Physics, 13.11.2019 22:31 eylinglez3ovm16v

To learn the properties of logarithms and how to manipulate them when solving sound problems. the intensity of sound is the power of the sound waves divided by the area on which they are incident. intensity is measured in watts per square meter, or \rm w/m^2.the human ear can detect a remarkable range of sound intensities. the quietest sound that we can hear has an intensity of 10^{-12}\; \rm w/m^2, and we begin to feel pain when the intensity reaches 1 \rm w/m^2 . since the intensities that matter to people in everyday life cover a range of 12 orders of magnitude, intensities are usually converted to a logarithmic scale called the sound intensity level beta, which is measured in decibels (\rm db). for a given sound intensity i, beta is found from the equation\beta=(10\; {\rm db})\log\left( \frac {i}{i_0} \right),where i_0=1.0\times 10^{-12}\; {\rm w/m^2}.use this technique to find a formula for the intensity i of a sound, in terms of the sound level beta and the reference intensity i_0. there will be a quantity (10 {\rm db}) involved in your calculations. when you enter your answer, leave off the unit \rm db. express your answer in terms of beta and i_0.

ansver
Answers: 3

Another question on Physics

question
Physics, 22.06.2019 11:20
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
Answers: 3
question
Physics, 22.06.2019 12:00
Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation
Answers: 1
question
Physics, 22.06.2019 16:00
Marvin records scientific data about lake superior. for which property has marvin forgotten to use an si unit of measurement? shore length high temperature low temperature annual precipitation
Answers: 3
question
Physics, 22.06.2019 18:00
Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm . part a the tank is heated until the pressure of the gas in the tank doubles. what is the temperature of the gas?
Answers: 3
You know the right answer?
To learn the properties of logarithms and how to manipulate them when solving sound problems. the in...
Questions
question
Mathematics, 29.01.2020 00:43
question
Mathematics, 29.01.2020 00:44
Questions on the website: 13722363