To calculate the wavelength of a radio wave, we can use the formula:
λ = c / f
where λ represents the wavelength, c is the speed of light (approximately 3 × 10^8 m/s), and f is the frequency.
Given that the frequency of the cellular telephone signal is 850 MHz (850 × 10^6 Hz), we can calculate the wavelength as follows:
λ = (3 × 10^8 m/s) / (850 × 10^6 Hz)
Simplifying the expression, we have:
λ = (3 / 850) × 10^8 m
λ ≈ 3.53 × 10^-1 m
Therefore, the wavelength of the cellular telephone signal is approximately 0.353 meters or 35.3 centimeters.