You are driving toward the base of a cliff and you honk your horn. (a) Is there a Doppler shift of the sound when you hear the echo? If so, is it like a moving source or moving observer? (b) What if the reflection occurs not from a cliff, but from the forward edge of a huge alien spacecraft moving toward you as you drive?

Q: car is moving at 20 m/s with its horn blowing at a frequency of 1200 Hz. It is chasing a second car…

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Q: . As a longitudinal sound wave passes through a medium, the particles of the medium move a. in…

A: Three different MCQ are given. We need to choose correct option.

Q: An ambulance moving at 35 m/s sounds its siren whose frequency is 480 Hz. A car is moving in the…

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Q: A group of hikers hears an echo 2.80 s after shouting. How far away is the mountain that reflected…

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Q: Assume a change at the source of sound reduces the wavelength of a sound wave in air by a factor of…

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Q: A hunter is standing on flat ground between two vertical cliffs that are directly opposite one…

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Q: 30. A car approaches you from behind as you run along a sidewalk. The car is moving towards you at…

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Q: A hunter is standing on flat ground between two vertical cliffs that are directly opposite one…

A: Given: The speed of sound is v=343 m/s, The second echo arrives at 1.53 s after the first, The…

Q: A school of dolphins is searching for a meal and uses echolocation to satiate themselves. They find…

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Q: A boat is floating at rest in dense fog near a large cliff. The captain sounds a horn at water level…

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Q: You are walking along a small country road one foggy morning and come to an intersection. While you…

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Q: An echo is sound that returns to you after being reflected from a distant surface (e.g., the side of…

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Q: The wave which cannot propagate through a vacuum is: O a. non mechanical wave O b. sound wave O C.…

A: the waves which do not pass through the vacuum are called mechanical waves.

Q: You are on an island where a huge explosion at a distance of 500 miles away can be heard. How long…

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Q: The frequency of the siren of a police car is 1000 Hz. What is the change in the frequency of the…

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Q: One end of the horizontal rope is attached to a prong of an electrically driven tuning fork that…

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Q: The horn in your car produces sound with a frequency of 80 Hz. While sitting at rest, you honk your…

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Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 1.30 x 102 km/h; train…

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Q: If you shout across a canyon and hear the echo 0.80 s later, how wide is the canyon? Use the speed…

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Q: Two automobiles are equipped with the same single-frequency horn. When one is at rest and the other…

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Q: A sonar echo returns to a submarine 1.92 s after being emitted. What is the distance to the object…

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Q: You are on an island where a huge explosion at a distance of 500 miles away can be heard. How long…

A: Convert miles to meter. 500 miles=500 miles×1609.34 m1 miles              =804670 m

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Q: When ultrasound waves travel from air into tissue they.. A)slow down B) speed up C) remain the same…

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Q: One end of a horizontal rope is attached to a prong of an electrically driven tuning fork that…

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A: Given that:Tenstion on the string, T=220 NMass of the string, m=1 g=0.001 kgLength of the string,…

Q: A pin with a mass of 0.15 g falls from rest on a table 1.0 m high. Upon reaching the floor, 0.02% of…

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Q: The siren is moving away from the listener with a speed of 43m/s, and the listener is moving toward…

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Q: The intensity of the sound from a certain leaf blower is measured at  25 × 10−2 W/m2.  Find the…

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Q: A group of hikers hears an echo 1.00 s after shouting. How far away is the mountain that reflected…

A: Given Data: An echo is heard after the shouting at time t is, t=1.00 s The speed of sound is, v=342…

Q: Unless otherwise indicated, for this problem , assume that the speed of sound through human tissues…

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Q: Simultaneously presenting tones of the same frequency and amplitude from two different sound sources…

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Shock Waves

Shock waves are common in continuum mechanics, and their dominance is attributable to the fact that they are stronger (or even less) compressible. Substantial perturbations propagated as sudden dynamic changes of a compressible medium supersonically. Shock waves are all around us in our daily lives. Lightning, earthquakes, volcanic eruptions, and meteorite impact all produce them in nature. Even the earth, which is protected by its magnetic field, generates a shock wave as in solar wind that travels around 20 Earth radiuses. These shock waves might be either constant, linked to the body, or unsteady, i.e., moving around with time. All of the shocks mentioned above can be damaging, so precautions must be taken to reduce their impact.