I have a to find the frequency of "30 m radio waves" that have a given velocity. My question is does the "30 m" refer to wavelength? I think it does but am wondering could it also be taken to refer to amplitude.
30 m is wavelenth. Radio waves have amplitudes in electromagnetic fields, E and H. The units for E is volts/meter, and H in Teslas.
Thanks so much!
The phrase "30 m radio waves" refers to the wavelength of the radio waves. In radio frequency applications, wavelength is typically used to describe the size or length of the wave. It represents the distance between two corresponding points on the wave, such as two consecutive peaks or two consecutive troughs.
In this case, "30 m" represents the distance of one complete cycle of the wave, measured in meters. Therefore, it is referring to the wavelength, not the amplitude. The amplitude, on the other hand, refers to the magnitude or strength of the wave. It represents the maximum displacement of the wave from its equilibrium position. Amplitude is usually measured in terms of voltage for radio waves.
To find the frequency of these radio waves, you can utilize the wave equation, which relates the speed of light to the wavelength and frequency of the wave. The equation is:
Speed of light = Wavelength * Frequency
Since you have the wavelength (30 m) and want to find the frequency, you need to rearrange the equation:
Frequency = Speed of light / Wavelength
By plugging in the known speed of light (approximately 3 x 10^8 m/s) and the wavelength (30 m) into the equation, you can calculate the frequency of the radio waves.