A sound wave has a frequency of 1986 Hz. What is the distance between crests or compressions of the wave? (Take the speed of sound to be 344 m/s.)

The formula to calculate the wavelength of a sound wave is:

Wavelength (λ) = Speed of sound (v) / Frequency (f)

Given that the frequency is 1986 Hz and the speed of sound is 344 m/s, we can plug in these values into the formula:

λ = 344 m/s / 1986 Hz
λ = 0.173 m

Therefore, the distance between crests or compressions of the sound wave is 0.173 meters.