- #1
MAtkinson
- 4
- 0
From Acoustics, Resonance, Energy, Power, Intensity and The Doppler Effect
An old-fashioned hearing trumpet has the shape of a flared funnel, with a diameter of 8 cm at its wide end and a diameter of 0.7 cm at its narrow end. Suppose that all of the sound energy that reaches the wide end is funneled into the narrow end. By what factor does this hearing trumpet increase the intensity of sound (measured in W/m2)? By how many decibels does it increase the intensity level of sound?
Intensity = Power / Area
Intensity = Energy / (Time)*(Area)
Intensity Level = 10*Log(Intensity/10^(-12)) (db)
...
Homework Statement
An old-fashioned hearing trumpet has the shape of a flared funnel, with a diameter of 8 cm at its wide end and a diameter of 0.7 cm at its narrow end. Suppose that all of the sound energy that reaches the wide end is funneled into the narrow end. By what factor does this hearing trumpet increase the intensity of sound (measured in W/m2)? By how many decibels does it increase the intensity level of sound?
Homework Equations
Intensity = Power / Area
Intensity = Energy / (Time)*(Area)
Intensity Level = 10*Log(Intensity/10^(-12)) (db)
The Attempt at a Solution
...