Sound Flashcards
1
Q
Intensity
A
Power/area
I=C/r^2
2
Q
Intensity Proportional to
A
1/r^2
3
Q
Sound level
A
Beta=10log(I/Io)
I=(Io)10^Beta/10
4
Q
New Sound level
A
Beta new=Beta + x
5
Q
Frequency in a tube open at both ends
A
fn=nf1
fm=m(v/2L)
6
Q
Frequency in a tube open on one end
A
fn=mf
fm=m(v/4L)
7
Q
Beat frequency
A
Beats/seconds
Original +/- New
8
Q
Doppler Effect
A
f’=((v sound +/- v observer)/(v sound -/+ v source)) f
9
Q
Upper signs apply
A
When moving closer together
10
Q
Lower signs apply
A
When moving apart
11
Q
Power
A
Power=Intensity * Area
