To find the wavelength of a wave, you can use the equation:
wavelength = speed of light / frequency
The speed of light is approximately 3 x 10^8 meters per second (m/s).
Plugging in the given frequency:
wavelength = (3 x 10^8 m/s) / (3 x 10^11 Hz)
By canceling out the common factor of 3, we get:
wavelength = (10^8 m/s) / (10^11 Hz)
Simplifying further, we can express the wavelength in scientific notation:
wavelength = 10^(-3) meters
Therefore, the wavelength of a wave with a frequency of 3 x 10^11 Hz is approximately 10^(-3) meters or 1 millimeter.