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12 questions from this quiz
Approximately 50 metres
Time for echo to be heard
Two microphones and a datalogger
A large distance apart
Time difference between microphones
Same frequency as the water waves
Distance between 'fixed' ripples
v=fλv = f \lambdav=fλ
metres per second (m/s)
metres (m)
At same speed as a wavefront
Time taken to draw the line
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