How is an electric guitar different from an acoustic guitar ?
Lungs are covered by
Acoustic organs of Cockroach are located over
A window whose area is 2m^2 opens on street where the street noise result in an intensity level at the window of 60 dB. How much acoustic power enters the window via sound waves. Now if an acoustic absorber is fitted at the window, how much energy from street will it collect in 5 h?
Guess which has a higher pitch : a guitar or a car horn ?
