RP: measuring waves in a solid

• What is one way in which energy may be transferred between stores?

  Waves
• What do both mechanical and electromagnetic waves transfer?

  Energy but not matter
• What is the aim of the experiment measuring waves in a solid?

  • To measure the frequency, wavelength, and speed of waves in a string.
• What is one method to measure the speed of waves in a solid?

  Using a vibration generator
• What equipment is used to pull the string taut in the experiment?

  A 200 gram hanging mass and pulley
• What should be done after switching on the vibration generator?

  Adjust the dial on the vibration generator until loops / waves can be seen
• How do you calculate the wavelength from the number of half wavelengths measured?

  Double the length of half wavelengths
• What is the formula to calculate wave speed?

  Wave speed = frequency × wavelength
• What are the risks and hazards associated with the string experiment?

  • string snapping can cause damage to eyes.
  • Control measures include using goggles for eye protection
• What is the significance of measuring the frequency in the experiment?

  The frequency is the frequency of the power supply
• If you measure the length of 10 half wavelengths and find it to be 50 cm, what is the wavelength?

  $Wavelength =$$2 \times \frac{50 \text{ cm}}{10} =$$10 \text{ cm}$
• How does the method of measuring waves in a solid differ from measuring waves in a ripple tank?

  The method involves using a string and vibration generator in a solid, while a ripple tank uses water waves