Answers Crowley Credit Recovery Physics BIntroduction to Waves

Wave Properties Answers

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A sound wave has a frequency of 425 Hz. What is the period of this wave?

0.00235 seconds

0.807 seconds

425 seconds

850 seconds

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A flute plays a note with a frequency of 266 Hz. What is the speed of sound if the wavelength is 1.3 m?

102 m/s

205 m/s

346 m/s

692 m/s

An FM radio station broadcasts at 9.23 × 107 Hz. Given that the radio waves travel at 3.00 × 108 m/s, what is the wavelength of these waves?

0.308 m

2.77 m

3.25 m

6.50 m

The speed of sound in ice, water, and steam is shown.

Sound travels fastest in ice because energy is easier to transfer when the molecules are close together.

Sound travels slowest in steam because the sound has to move around the gas molecules that are far apart.

Sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy.

Sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

A wave has a wavelength of 4.9 m and a velocity of 9.8 m/s. The medium through which this wave is traveling is then heated so that the velocity is doubled.If the frequency remains constant, what is the wavelength of the heated wave?

2.5 m

9.8 m

14.7 m

19.6 m

Which equations represent the relationship between wavelength and frequency for a sound wave? Check all that apply.

v = f

= vf

f = v

f =

f =

A wave is produced in a rope. The wave has a speed of 33 m/s and a frequency of 22 Hz.

0.67 m

0.75 m

1.5 m

3.0 m

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