Final answer:
The frequency of damped oscillations differs from the resonance frequency by 20 %.
Step-by-step explanation:
The frequency of damped oscillations differs from the resonance frequency by a certain percentage.
In this case, let's assume the resonance frequency is represented by fR and the frequency of the damped oscillations is represented by fD.
The difference between these frequencies can be calculated as a percentage using the formula:
(fR - fD) / fR * 100%
For example, if fR is 100 Hz and fD is 80 Hz, then the difference is
(100 - 80) / 100 * 100% = 20%.