Answer:308 N/m
Explanation:
Given
mass[tex]\left ( m\right )=0.129 kg[/tex]
wavelength[tex]\left ( \lambda \right )=3.86\times 10^7[/tex]
We know frequency =[tex]\frac{c}{\lambda }=\frac{3\times 10^8}{3.86\tmes 10^7}[/tex]
f=7.772 Hz
As the frequency of radio waves is same as the frequency at which object oscillates
[tex]f=\frac{1}{2\pi }\sqrt{\frac{k}{m}}[/tex]
[tex]7.772=\frac{1}{2\pi }\sqrt{\frac{k}{0.129}}[/tex]
[tex]7.772\times 2\times \pi =\sqrt{\frac{k}{0.129}}[/tex]
[tex]k=307.70\approx 308 N/m[/tex]
