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A sound wave travels through air at a speed of 340 m/s. If the wavelength is 0.8

Practice Questions

Q1
A sound wave travels through air at a speed of 340 m/s. If the wavelength is 0.85 m, what is the frequency of the sound wave? (2022)
  1. 400 Hz
  2. 300 Hz
  3. 250 Hz
  4. 500 Hz

Questions & Step-by-Step Solutions

A sound wave travels through air at a speed of 340 m/s. If the wavelength is 0.85 m, what is the frequency of the sound wave? (2022)
  • Step 1: Identify the speed of the sound wave, which is given as 340 m/s.
  • Step 2: Identify the wavelength of the sound wave, which is given as 0.85 m.
  • Step 3: Use the formula for wave speed, which is v = fλ, where v is speed, f is frequency, and λ is wavelength.
  • Step 4: Rearrange the formula to solve for frequency (f): f = v / λ.
  • Step 5: Substitute the values into the formula: f = 340 m/s / 0.85 m.
  • Step 6: Calculate the frequency: f ≈ 400 Hz.
  • Wave Properties – Understanding the relationship between speed, frequency, and wavelength of sound waves.
  • Formula Rearrangement – Ability to manipulate equations to solve for a specific variable.
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