Exam 6: Waves and Sound

The SI unit of frequency is ______________.

The relationship of wave speed,wavelength,and frequency is given by ______________.

Which of the following radiations has the longest wavelength?

During a thunderstorm,an observer notes that 10 s elapsed between the lightning flash and the sound of the thunder.What is the approximate distance,in miles,from the observer to the lightning?

A wave in which the particle displacement is parallel to the wave motion is called a(n)______________ wave.

The threshold of hearing is

What are the wavelength limits,in meters,of the audible region of the sound spectrum (v = 344 m/s)?

How many times greater is the speed of infrared light (λ = 800 nm)than the speed of violet light (λ = 400 nm)in a vacuum?

An increase of 40 dB increases the sound intensity by a factor of