What would you like to do?
velocity=lambda*frequency Therefore lambda=velocity/frequency
Wavelength lambda and frequency f are connected by the speed c of the medium. c can be air = 343 m/s at 20 degrees celsius or water at 0 dgrees = 1450 m/s. c c…an be light waves or electromagnetic waves = 299 792 458 m/s. The formulas are: c = lambda x f f = c / lambda lambda = c / f
Radio waves travel at the speed of light, about 186,282 miles per second in a vacume. The wavelength in meters multiplied by the frequency in megahertz equals about 300.
For 90.7 MHz: λ = about 10.84 feet.
wavelength=velocity x frequency wavelength=3x108 x 90.7x103 wavelength=272.1x1011
The speed of light is 300,000,000 meters per second. Divide that by 30,000,000 hertz and you get 10 meters. The good old 10 meter band of ham radio fame.
wavelength would be 3.01507538 Meter in free space.
The wavelength is greater than 300E6/300E9 = 1 mm and the frequency is less than about 300 Gigacycles.
Divide 300 by the frequency in Megahertz to get the wavelength in metres. the 300 comes from the constant 300,000,000 m/second which is the speed of light (and radio waves).
You haven't said "compared to what". Radio waves would probably be considered low-frequency / long-wavelength, because the lower/longer forms of E&M radiation aren't too …useful to us, and in the normal everyday everyman's world, you never hear anything about them.
How does the wavelength and frequency of radio waves compare to the wavelength and frequency of visible light?
Radio waves have much lower frequency / much greater wavelength than visible light has.
The wave length and frequency of course vary, the frequency ranges from 3kHz to 300 GHz. The wavelengths are longer than infrared.
3 Meters > 100 MHz 3 Miles > 62.137 KHz
Frequency = speed / wavelength . 299,792,458 meters per second / 3.11 meters = 96.396 MHz .
Wavelength = speed / frequency . 300,000,000 meters per second / 530,000,000 per second = 56.6 centimeters .
One convenient working definition of 'radio' is: Electromagnetic radiation with frequency up to 300 GHz / wavelength down to 1 millimeter. 'Radio' is our name for the lowest… frequency / longest wavelength, so there's no lower limit on frequency, or upper limit on wavelength.
Frequency = speed / wavelength = 300,000,000 / 150 = 2MHz