Chapter 11 Homework
How far, in terms of wavelength, does a wave travel in one period?
The wave travels a distance equal to its speed.
Sound from source A has twice the frequency of sound from Source B.
wavelengths of sound from the two sources.
The sound from source A will have a smaller wavelength than the sound from source B.
If a bell is ringing inside a bell jar, we can no longer hear it when the air is pumped
out, but we can still see it.
What differences in the properties of sound and light does this
In an environment where no oxygen is present, sound has nothing to refract off of, even
though the action is still occurring.
If the frequency of sound is doubled, what change will occur in its speed?
change will occur in its wavelength?
If the frequency of sound is doubled, the sound’s speed will also double, while the
wavelength will be cut in half.
A rule of thumb for estimating the distance in kilometers between an observer and a
lightning strike is to divide the number of seconds in the interval between the flash and
the sound by 3.
Is this rule correct?
This rule is not exactly correct, but quite close.