We know that a speaker that is 3m away from us is playing music at an intensity of 0.89W/m2. What is the power of this speaker?               Another speaker is playing at an intensity of 1.2W/m2 and a power of 2W. How far away is this speaker from us?                 What is the difference between constructive and destructive interference? Give an example of each.                   If you know that the interference of 2 waves creates a wavelength of a wave is 4.5m, can you determine if the interference is constructive or destructive? How do you know?             If one note has a frequency of 132Hz and another has a frequency of 148Hz. What is the beat frequency?     A vocal tract has a length of 15.3cm and is represented by the 3rd harmonic. 6a. How many nodes are there in the 3rd harmonic?         6b. What is the wavelength of the 3rd harmonic?               6c. What is the frequency of the 3rd harmonic?                 6d. What is the wavelength of the 4th harmonic?               6e. What is the frequency of the 5th harmonic?

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Q: Two in-phase loudspeakers, A and B, are separated by 3.20 m. A listener is stationed at C, which is…

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Q: Lucy has three sources of sound that produce pure tones with wavelengths of 60 cm, 100 cm, and 124…

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Q: A whistle you use to call your hunting dog has a frequency of 21 kHz, but your dog is ignoring it.…

A: frequency of the whistle (f) = 21 kHz the observed frequency when the observer is riding a bicycle…

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Q: The intensity of electromagnetic waves from the sun is 1.4kW/m2 just above the earth's atmosphere.…

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Q: Two speakers emit sound waves of different frequencies as shown in the figure: Speaker A has a power…

A: power of speaker A = 1.00mW Power pf speaker B = 1.50 mW

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Q: 1. We know that a speaker that is 3m away from us is playing music at an intensity of 0.89W/m2 What…

A: 1)the power is given by,

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A: Given: The frequency is 68.6 Hz.             The speed of the sound is 343 m/s. To determine: The…

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Q: Consider the speaker set-up in the previous question.  Each speaker emits a frequency of 6.6·102 Hz…

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Q: A wave generator located 4.0 meters from a reflecting wall produces a standing wave in a string, as…

A: - Distance between two nodes -λ2 So 2λ= 4 mλ= 2m

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Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.