Final answer:
The frequency is approximately 215 Hz.
Step-by-step explanation:
To calculate the frequency of sound traveling in air at 20°C with a wavelength equal to 1.6 m, we can use the formula:
speed of sound = frequency × wavelength
Given that the temperature is 20°C and the speed of sound in air is 344 m/s, we can substitute the values into the formula to find the frequency:
344 m/s = frequency × 1.6 m
frequency = 344 m/s ÷ 1.6 m
frequency ≈ 215 Hz
Therefore, the frequency of sound traveling in air at 20°C with a wavelength equal to 1.6 m is approximately 215 Hz.