Physics 9702 · AS & A Level · Progressive waves

Progressive waves — practice question

Blue whales emit sound waves with frequencies from $10\,\text{Hz}$ to $40\,\text{Hz}$. In seawater, sound travels at approximately $1.5\,\text{km s}^{-1}$. Calculate the approximate range of wavelengths of the sound waves emitted by blue whales.

  • A$6.7\,\text{mm}$ to $27\,\text{mm}$
  • B$3.8\,\text{cm}$ to $15\,\text{cm}$
  • C$6.7\,\text{m}$ to $27\,\text{m}$
  • D$38\,\text{m}$ to $150\,\text{m}$

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