Final answer:
The wavelength of the electromagnetic wave produced by a cell phone with a frequency of 700 MHz is 0.428 meters.
Step-by-step explanation:
The wavelength of an electromagnetic wave can be calculated using the formula:
wavelength (m) = speed of light (m/s) / frequency (Hz)
Given that the frequency of the wave is 700 MHz (700,000,000 Hz), and the speed of light is approximately 2.998 x 10^8 m/s, we can substitute these values into the formula:
wavelength (m) = (2.998 x 10^8 m/s) / (700,000,000 Hz)
Simplifying this equation gives us:
wavelength (m) = 0.428 meters
Therefore, the wavelength of the electromagnetic wave produced by your cell phone is 0.428 meters.