The diagram shows a wave being
generated in a rope. Draw a diagram to show what the wave will look like after half of the period has elapsed. Show the red ribbon, amplitude, crest, trough and wavelength.
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Question No. 3
An oscillator attached to a rope makes 50 vibrations in 30 s. A crest on the rope travels 350 cm in 15 s. Determine: a) the period of the waves in the rope; b) the speed of the waves in the rope.
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Question No. 4
The following graph shows the waveform of waves travelling at 0.1 m/s in a ripple tank. Determine: a) the amplitude of the wave; b) the wave frequency; c) the wavelength of the waves.
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Question No. 5
In one part of a ripple tank water waves have a velocity of 20 cm/s and a wavelength of 3 cm. In another part the same waves travel at 15 cm/s due to a change in water depth. What will be the values of the frequency and wavelength in the second part of the tank?
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Question No. 6
Give two differences between water waves and light waves.
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Question No. 7
Determine the frequency of red light of wavelength 700 nm.
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Question No. 8
A signal generator gives off sound waves with a wavelength of 1.1 cm. Do a calculation to determine if this sound can be heard by humans. Take the speed of sound as 332 m/s.
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Question No. 9
In 2004, an earthquake in South-East Asia triggered immense tidal waves (tsunami) with a crest-to-crest distance of 800 km and a period of 1.0 hour. Determine the speed of the tsunami waves in km/h and compare this speed with that of a jet aircraft travelling at 300 km/h.
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Question No. 10
Which one of the following waves is NOT a mechanical wave?
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Question No. 11
Which pair(s) of the points on the following wave are in phase? P Q R S T U Displacement Displacement
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Question No. 12
The amplitude of any wave is dependent on the __________ of the wave.
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Question No. 13
Which one of the following waves is NOT a mechanical wave?
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Question No. 14
Which of the following three statements are correct? (i) waves are caused by objects undergoing simple harmonic motion (ii) particles in a wave oscillate about their equilibrium position (iii) waves transport energy from one point to another
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Question No. 15
A ball-ended dipper is used to generate circular waves in a ripple tank. When the frequency of the dipper is doubled:
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Question No. 16
The amplitude of any wave is dependent on the __________ of the wave.
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