# Frequency and wavelength!

#### waywardtigerlily

A resonant circuit in a radio receiver is tuned to a certian station when the inductor has a value of 0.151mH and the capacitor has a value of 21.2pF. Calculate the frequency of the radio station.

Frequency is 2.81 MHz ( I got this one right)

B) what is the wavelength of the radiowaves emited by the radio station?
I was told to do this just take 1/f,but this gave me a wrong answer. Is there another way of going about it?

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#### MathStudent

1\f is the period,

for wavelength you want to use the equation for all waves

$$v = f \lambda$$

where v is the speed of propogation of the wave

#### whozum

For this problem, $$v = c$$. All electromagnetic waves travel at the speed of light, so:

$$f = c/\lambda$$

#### MathStudent

Well there goes the chance of the OP doing any of the work for himself.

#### whozum

A lot of people dont know that, its not a question of doing work, its just a fact he needs.

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