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1 markProperties of Waves

CAPE Physics Unit 1 · 2013 · Paper 2 · Question 5(c)(iv)

The general equation for a travelling wave is y = A₀ sin ( (2π/λ) x + 2πft) where A₀ is the amplitude, λ is the wavelength and f is the frequency of the wave. A sound wave is represented by the following equation: y = 5 × 10⁻⁴ sin (740x + 251300t), where x and y are measured in metres and t is measured in seconds.

Determine the following properties of the wave: Speed

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Other parts of this question

  1. 5(a)If the length of the wire, L, is 0.4 m, calculate the speed of the waves moving along it.[3 marks]
  2. 5(b)(i)What will happen to the speed of the waves moving along the wire if the tension is doubled (all other factors remaining the same)?[2 marks]
  3. 5(b)(ii)What will happen to the speed of the waves moving along the wire if the length is doubled (all other factors remaining the same)?[1 mark]
  4. 5(c)(i)Determine the following properties of the wave: Amplitude[7 marks]
  5. 5(c)(ii)Determine the following properties of the wave: Wavelength[1 mark]
  6. 5(c)(iii)Determine the following properties of the wave: Frequency[1 mark]
  7. 5(d)Briefly describe a practical application in which this type of sound wave may be used.[3 marks]

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