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Cambridge Secondary (7-9). Stage 9. MCE Science. Student Book - Unit 11: Sound - Question 46

Cambridge Secondary (7-9) · Unit 11: Sound

Question 46

Tick (✓) the correct answer to each question.
What unit is used to measure frequency?
  1. decibel (dB)
  2. hertz (Hz)
  3. watt (W)
  4. metre per second (m/s)
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