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Waves Problems - Assignment
1.
A tuning fork produces a sound with a frequency of 256 Hz and a wavelength in air of 1.35 m.
a) What value does this give for the speed of sound in air?
b) What would be the wavelength of the wave produced by this tuning fork in water in which
sound travels a 1500 m/s?
2.
The smallest insects a bat can detect are approximately the size of one wavelength of the sound the bat
makes. If a bat emits a chirp at a frequency of 60.0 kHz, what is the size of the smallest insect it can
detect?
3.
Green light has a wavelength of 5.20 x 10 –7 m. Calculate the period and frequency of green light
waves with this wavelength.
4.
Two tuning forks with frequencies 256 Hz and 512 Hz are struck. Which of the sounds will move
faster in the air?
5.
If the sonar signal sent straight down from a boat takes 0.400 seconds to return, how deep is the lake?
6.
If the “shot heard round the world” could actually travel around the world, how long will it take? (
Assume the circumference of the earth is 40,000 km.)