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Sagot :
Answer:
This calculation must be done in two parts. Use the time period to find the frequency then use the frequency and wavelength to find the wave speed
Time period = 1 ÷ frequency.
0.42 = 1 ÷ frequency.
frequency = 1 ÷ 0.42.
= 2.38 Hz.
wave speed = frequency × wavelength.
wave speed = 2.38 × 0.34.
= 0.809 m/s.
hope it helps
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