Waves & Sound

Waves & Sound Principles

Articles
Title
A dolphin swimming at the surface of the sea emits an ultrasonic sound wave toward the ocean floor. It takes 0.15 s for the sound to go from the dolphin to the floor of the ocean and back. Determine the depth of the ocean if the speed of sound in the wate
What's wave length
A tsunami wave travels at 720 km/h and has a period of 10 min. What is the wavelength of the wave?
A girl sitting on a beach counts six waves passing a buoy in 3 s. She measured the distance between the waves to be 1.5 m. What is the speed of the waves the girl observed?
Which of the following are true about sound waves?(A) Their speed increases slightly with temperature.(B) They travel faster than light waves.(C) Their speed gets greater as the pitch of the sound increases.(D) They travel faster in steel than air.(E
The highest sound that a human can hear has a wavelength of 17.2 cm. What is the frequency of this wave? (Assume the speed of sound is 343 m/s.)
What are the approximate amplitude and wavelength, respectively, of the wave shown in the diagram?
An observer notices a 2-s delay between seeing fireworks and hearing them. How far away are the fireworks if the speed of sound is 344 m/s?
A wave has a frequency of 100 Hz. What is the period of the wave?
A favorite radio station is located on the dial at 100 MHz. What is the wavelength of the radio waves emitted from the radio station if the speed of these waves is 3 X 10^8 m/s?

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