The wavelength (λ) of a wave can be calculated using the formula:
λ = c / f
where λ is the wavelength, c is the speed of light, and f is the frequency of the wave.
The speed of light (c) is approximately 3.0 × 10^8 meters per second.
Plugging in the values, we can calculate the wavelength:
λ = (3.0 × 10^8 m/s) / (1.9 × 10^8 Hz)
λ = 1.58 meters
Therefore, the wavelength of a radio wave with a frequency of 1.9 × 10^8 Hz is approximately 1.58 meters.