Acoustics Answers

A bugle is essentially a 2.65m pipe that is open at both ends. Determine the lowest frequency note that can be played on a bugle.

Please explain what the decibel is!

A Ship floats on water send a sound when it was 900 m away from a mountain & hears a sound after 6 seconds if the velocity of the sound was 340 m/sec find the velocity of the ship .

The human ear can detect sounds with frequencies between 20 Hz and 16 kHz. Find the
greatest and the smallest wavelengths the ear can detect, assuming the sound travels.

If the threshold of hearing is taken as 0 dB, then normal conversation has a decibel level of what?

In order for a sound to be a heard as twice as loud as 110 dB sound, the decibel level would need to be what?

On the front row of the concert the sound level reaches a value of 110 dB. In the back row thw sound intensity is reduced by a factor of 1000. What is the decibel level on the back row?

A train is at rest and you are driving toward it at 50 m/sec when it emits a pitch of 1500 Hz, with what frequency will you hear the pitch?

If a train is moving toward you and at a speed of 50 m/sec and emits a whistle sound of pitch 1500 Hz, what will be the frequency with which you hear the pitch?

The bones are dead cells and living cells. If dead why? If living why?