Waves & Sound Unit Review

Resonance is when you need maximum energy to produce max. amplitude.

If two frequencies that are almost the same are sounded together, _________ are heard.

If the following wave train (same as last time), takes 4.2 s to travel, what is the wave speed?

In the same lab, air inside PVC pipe resonates when:

In speed of sound lab with tuning forks, you hear a loud sound at one point when: ____

If a tuning fork of 440 Hz and a tuning fork of 444 Hz are sounded together, beat frequency is

We say the air column resonates when ___________

Beat frequencies are a result of ________

An object can resonate only at its natural frequency, but can have forced vibrations at any f.

A 5 m string of holiday lights is used to create a 1st harmonic standing wave. What is λ?

In a standing wave, the wave appears motionless at the:

When an object is vibrated at its natural frequency, max amplitude results with min effort.

For a wave to occur a disturbance has to be:

A 5m string of holiday lights is used to create a third harmonic standing wave. What is λ?

If a wave is traveling at 60 cm/s and has a wavelength of 15cm, its period is: ___

Which of the following is NOT an example of usage of Doppler effect

Resonance occurs when vibrating frequency ______________ natural frequency.

Which of the following phenomena is used in sounding boards for musical instruments?

A blue shift in a star's light observed from Earth indicates that the star is __________.

A pendulum makes exactly 36 vibrations in 60 seconds. What is its frequency?

In the same lab, h=34cm and speed of sound is 340 m/s, what is frequency of tuning fork?

The crests of a wave align with the ______ of another identical wave & result in zero amplitude

If the following wave train is 36 m in length, what is its wavelength?