|
The intensity due to a number of independent sound sources is the sum of the individual intensities.
(a) When four quadruplets cry simultaneously, how many decibels greater is the sound intensity level than when a single one cries?
(b) To increase the sound intensity level again by the same number of decibels as in part (a) how many more crying babies are required? |
| New search. (Also 5349 free access solutions) |