Answers TX-Physics CRIntroduction 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 transverse wave is shown.

1.3 cm

2.1 cm

2.6 cm

4.2 cm

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

All parts of the electromagnetic spectrum travel at a speed of 3 × 108 m/s when traveling through no medium. A "vacuum” means that there is no medium, such as a tube without any air in it. Therefore, 3 × 108 m/s is said to be the speed of light in a vacuum.

Wavelength doubles and speed doubles.

Wavelength doubles and speed stays the same.

Wavelength divides in half and speed doubles.

Wavelength divides in half and speed stays the same.

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

A transverse wave with a frequency of 125 Hz is traveling in the x-direction.

0.42 seconds

2.0 seconds

2.4 seconds

4.8 seconds

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

Sound travels slowest through what temperature of water?

20°C

40°C

60°C

80°C

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

v = f