Waves in a solid

• What is the purpose of the vibration generator in the experiment?


  It allows us to change the frequency of vibration of the string
• What is the length of the standing wave measured in the experiment?


  21.5 centimeters
• What is a standing wave and how is it formed in this experiment?


  A standing wave is formed due to resonance at a certain frequency of vibration
• How do you calculate the speed of a wave using the wave equation?


  Wave speed equals frequency multiplied by wavelength
• If the frequency is 10 Hertz and the wavelength is $0.215 \text{ m}$, what is the wave speed?


  $2.15 \text{ m/s}$
• What happens to the standing wave when the frequency is increased?


  The standing wave changes to have more half wavelengths
• How do you calculate the wavelength when there are three half wavelengths present?


  Divide the total length by the number of half wavelengths and multiply by 2
• If the total length is $0.215 \text{ m}$ and there are three half wavelengths, what is the wavelength?


  $0.143 \text{ m}$
• What is the wave speed if the frequency is 15 Hertz and the wavelength is $0.143 \text{ m}$?


  $2.15 \text{ m/s}$
• What does the wave speed depend on in the context of the string experiment?


  The wave speed depends on the tautness of the string and the mass per centimeter
• What is the procedure to calculate the wavelength from a standing wave in the experiment?


  • Measure the total length of the standing wave
  • Count the number of half wavelengths
  • Divide the total length by the number of half wavelengths
  • Multiply by 2 to find the wavelength
• What type of waves are being measured in this practical experiment?

  Waves in a solid
• What is the frequency used to create the wave with three half wavelengths?


  15 Hertz
• Why is it difficult to see the vibrations of the string?


  Because they are extremely small and rapid
• What is the unit of measurement for frequency?


  Hertz
• What is the unit of measurement for wavelength?


  Meters
• What is the unit of measurement for wave speed?


  Meters per second