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Wave Speed Basics (Grades 11-12)

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Wave Speed Basics

Instructions: Read each question carefully. Choose the answer that best fits the question. Short answer response questions must be responded to in complete sentences. If the question involves calculations, you must show all your math work.

1. 
A musical note has a frequency of 512 Hz. If the wavelength of the note is 0.685 m, what is the speed of the sound of that note?
  1. 345 m/s
  2. 351 m/s
  3. 841 m/s
  4. 0.00120 m/s
2. 
The following equation approximates the speed of sound:

[math]v=[331.4+(0.6)("T in ºC")]m/s[/math]

As shown, temperature is one of the factors that affects the speed of sound. What is the speed of a sound wave in air with an average temperature of 20ºC?
  1. 343 meters per second
  2. 343 meters per hour
  3. 300 million meters per second
  4. 300 million meters per hour
3. 
An oscillation's frequency is directly related to its wave speed and inversely related to its period.
  1. True
  2. False
4. 
Wave speed is calculated by                                     .
  1. multiplying frequency and wavelength
  2. dividing frequency and wavelength
  3. adding frequency and wavelength
  4. subtracting frequency and wavelength
5. 
The speed of sounds depends on               . (Select all answers that apply.)
  1. Elasticity
  2. Resonance
  3. Density
  4. Loudness
  5. Frequency
  6. Temperature
6. 
Calculate the wavelength of the following frequencies with the speed of sound at 344m/s:
a)17050Hz
b)50Hz
c)128Hz
d)440Hz
e)4200Hz

Include your calculations in the space provided.















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