Homework Statement
Particles approximately 3.0 x 10^-2 cm in diameter are to be scrubbed loose from machine parts in an aqueous ultrasonic cleaning bath. Above what frequency should the bath be operated to produce wavelengths of this size and smaller?
Homework Equations
Fn = nv/(2L)
v=...
Right, but I guess what I'm trying to say, is there a way or equation that adds a specific amount of decibels onto the original amount if they are all at the same amount of decibels.
like for instance 5 people at 80 decibels comes out to 87 decibels. how would i get the 5?
Yes, but without actually using the logs or taking the reverse of a log to get the answer, would there be a easier way to get it. i am just looking for the way to get the answer!
BEL= log base 10 I/Io
DECIBEL= 10log base 10 I/Io
... Now... how would i obtain the answer?
Homework Statement
In a neighborhood challenge to see who can climb a tree the fastest, you are ready to climb. Your friends have surrounded you in a circle as a cheering section; each individual alone would cause a sound intensity level of 80 dB at your location. If the actual sound level at...