Final answer:
The wavelength of a 35.5 GHz radar gun is calculated using the equation λ = c/f and is approximately 8.45 millimeters.
Step-by-step explanation:
The wavelength of the radiation emitted by a radar gun operating at 35.5 GHz can be calculated using the formula for electromagnetic wave propagation speed = frequency × wavelength, where the speed of light (c) is approximately 3×108 meters per second and the frequency (f) is 35.5 GHz, or 35.5×109 hertz. To find the wavelength (λ), rearrange the formula to λ = c/f. Plugging in the values gives us λ = 3×108 m/s / 35.5×109 Hz, which equals approximately 8.45 millimeters.