What is the minimum frequency resolution required such that the amplitudes of the peaks can be measured with reasonable accuracy? Round your answer to an appropriate whole Hertz value.

Hz

Your answer should be accurate to $\backslash (+/-0\mathrm{.}1\backslash ).$

averages

Your answer should be accurate to $\backslash (+/-0\mathrm{.}1\backslash ).$

If the loss factor, $\backslash (\backslash$eta $\backslash ),$ of the lowest frequency mode is $0\mathrm{.}006,$ what is the normalised bias error for the cross$-$spectral density magnitude?

Your answer should be accurate to $\backslash (+/-0\mathrm{.}001\backslash ).$