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PQ 6
Questions and Answers
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Q1
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Q1 continued
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Q1 continued
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Q2
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Q2 continued
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Q2 Continued • Determine the wavelength for each harmonic
on the 12 metre rope. Record the values in the table below.
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Q2 continued
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Q2 continued
• d. What happens to the frequency as the wavelength increases?
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Q2 continued
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Q2 continued
• f. What effect did using a shorter rope have on the wavelength and frequency?
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Q3 A standing wave in a rope has 5 nodes and 4 antinodes. The rope is 24.0 metres long and is vibrating at 2.0 cycles per second. What is the speed of the wave? SKETCH THIS FIRST.
The sketch shows 5 dots and 4 loops for a length of 24.0 m. This sketch shows 2 COMPLETE wavelengths, so Λ is 12.0 m. The f is 2.0 Hz, and v = f Λ The final answer is 24.0 m/s.
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Q4 A standing wave has 2 nodes and 1 loop in a jump rope that is 8.5 metres long. It is vibrating at 1.5 cycles per second. What is the velocity of the wave?
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Q5 Five pulses are generated every 0.100 s in a tank of water. What is the speed of propagation of the wave if the wavelength of the surface wave is 1.20 cm?
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Q7
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Q7 continued b. How many complete waves are emitted in this time interval?
c. After 0.50 s, how far is the front of the wave from the source of the sound?