1Which of the following is NOT equal to the wavelength of a wave?The distance from the trough of one wave to the trough beside itThe distance from a point on one wave to the equivalent point on the wave beside itThe frequency of the wave (in Hz) divided by its speed (in m/s)The distance from the peak of one wave to the peak beside it2What is meant by the amplitude of a wave?The number of waves passing a point per secondThe distance from a point on one wave to the equivalent point on the wave beside itThe maximum displacement of a point on a wave from its undisturbed positionThe time taken for one complete wave to pass a point3What is meant by the frequency of a wave?The number of waves that pass a point per secondHow often a wave passes a pointThe total number of waves produced by a sourceThe number of seconds it takes for one complete wave to pass a point4A pianist plays a note which has a frequency of 440 Hz. Calculate the wavelength of this sound wave produced by the piano if the speed of sound in air is approximately 330 m/s.0.75 m1.33 m (2 d.p.)145,200 m110 m5A wave of wavelength 10 m is travelling at a speed of 100 m/s. Calculate the period of this wave.0.1 seconds10 seconds1,000 seconds1 second6Brian uses a starter pistol to mark the start of a 100 m sprint. The sound wave produced by the pistol reflects from a nearby wall, and he hears the echo of the shot 600 ms (milliseconds) after the pistol was fired. Calculate how far the wall was from Brian. The speed of sound in air is approximately 330 m/s.99 m198 m1,980 m990 m7A sound wave travels from air into water. In air, the sound wave travels at a speed of 340 m/s and has a wavelength of 20 m, and in water, it travels at a speed of 1500 m/s. Calculate the wavelength of the sound wave in water.88.24 m25,500 m4.53 m0.01 m
Question
1Which of the following is NOT equal to the wavelength of a wave?The distance from the trough of one wave to the trough beside itThe distance from a point on one wave to the equivalent point on the wave beside itThe frequency of the wave (in Hz) divided by its speed (in m/s)The distance from the peak of one wave to the peak beside it2What is meant by the amplitude of a wave?The number of waves passing a point per secondThe distance from a point on one wave to the equivalent point on the wave beside itThe maximum displacement of a point on a wave from its undisturbed positionThe time taken for one complete wave to pass a point3What is meant by the frequency of a wave?The number of waves that pass a point per secondHow often a wave passes a pointThe total number of waves produced by a sourceThe number of seconds it takes for one complete wave to pass a point4A pianist plays a note which has a frequency of 440 Hz. Calculate the wavelength of this sound wave produced by the piano if the speed of sound in air is approximately 330 m/s.0.75 m1.33 m (2 d.p.)145,200 m110 m5A wave of wavelength 10 m is travelling at a speed of 100 m/s. Calculate the period of this wave.0.1 seconds10 seconds1,000 seconds1 second6Brian uses a starter pistol to mark the start of a 100 m sprint. The sound wave produced by the pistol reflects from a nearby wall, and he hears the echo of the shot 600 ms (milliseconds) after the pistol was fired. Calculate how far the wall was from Brian. The speed of sound in air is approximately 330 m/s.99 m198 m1,980 m990 m7A sound wave travels from air into water. In air, the sound wave travels at a speed of 340 m/s and has a wavelength of 20 m, and in water, it travels at a speed of 1500 m/s. Calculate the wavelength of the sound wave in water.88.24 m25,500 m4.53 m0.01 m
Solution
Sure, I can help with that. Here are the answers to your questions:
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The frequency of the wave (in Hz) divided by its speed (in m/s) is NOT equal to the wavelength of a wave. Wavelength is actually calculated by dividing the speed of the wave by its frequency.
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The amplitude of a wave is the maximum displacement of a point on a wave from its undisturbed position. It essentially measures the height of the wave.
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The frequency of a wave is the number of waves that pass a point per second. It measures how often the waves occur.
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The wavelength of the sound wave produced by the piano can be calculated using the formula: Wavelength = Speed of Sound / Frequency. So, Wavelength = 330 m/s / 440 Hz = 0.75 m.
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The period of a wave can be calculated using the formula: Period = 1 / Frequency. But first, we need to find the frequency using the formula: Frequency = Speed / Wavelength. So, Frequency = 100 m/s / 10 m = 10 Hz. Therefore, Period = 1 / 10 Hz = 0.1 seconds.
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The distance of the wall from Brian can be calculated using the formula: Distance = Speed of Sound * Time. But first, we need to convert the time from milliseconds to seconds. So, Time = 600 ms = 0.6 seconds. Therefore, Distance = 330 m/s * 0.6 seconds = 198 m.
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The wavelength of the sound wave in water can be calculated using the formula: Wavelength = Speed of Sound in Water / Frequency. But first, we need to find the frequency using the formula: Frequency = Speed of Sound in Air / Wavelength in Air. So, Frequency = 340 m/s / 20 m = 17 Hz. Therefore, Wavelength in Water = 1500 m/s / 17 Hz = 88.24 m.
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