A bat flying at 5.20 m/s is chasing an insect flying in the same direction. The bat emits a 39.8-kHz chirp and receives back an echo at 40.6 kHz. (Take the speed of sound in air to be v = 343 m/s.) (a) What is the speed of the insect? ?m/s (b) Will the bat be able to catch the insect? Yes or No Explain.

Q: At a factory, a noon whistle is sounding with a frequency of 298 Hz. As a car traveling at 85.0 km/h…

A:

Q: The frequency of the 1-m-long vibrating string is 250 Hz.  The string has a linear mass density of 5…

A: Given value--- length = 1m. frequency = 250 Hz. density = 5 gram per meter . the number of segments…

Q: A car is travelling away from you at 64 mph.  A car horn produces a sound with a frequency of 574…

A: We will use the Doppler effect formula to find out the observed frequency when source is moving away…

Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 129 km/h; train 2, a…

A: Given, speed of the train 1 (observer), vo = 129 kmh speed of train 2 (source), vs = 89.0 kmh…

Q: A mosquito flaps its wings 600 vibrations per second, which produces the annoying 600 Hz buzz. How…

A: Frequency (f) = 600 Hz Speed (s) = 340 m/s

Q: A group of hikers hears an echo 4.90 s after shouting. How far away is the mountain that reflected…

A: Write the given values with suitable variables. t=4.9 sv=347 m/s Here, t denotes the time and v…

Q: An ambulance moving with a speed of 31.0 Km/h is  emitting a sound of 850 Hz as it approaches a…

A: speed of ambulance is vs 31.0 km/h v s= 31.0 x 5/18 m/s . v s= 8.61 m/s . The frequency of sound…

Q: The speed of ultrasound in human body is 1540 m/s. A procedure is performed with a frequency of 2…

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Q: A train sounds a horn that vibrates at a frequency of 400Hz, as heard by the engineer aboard the…

A: Recall Apparent frequency=f then  f=V±VDV±VsWhere V=speed of sound           VD=speed of detector…

Q: A car has frequency of 2000 Hz as heard by a passenger in the car. And The car is moving at a speed…

A: The first car which has a frequency, and the second car which receives the frequency both are…

Q: You are in a car moving at 90 km/h and you see someone at the side of the highway. You use your horn…

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Q: A military jet is flying at an altitude of 8.2 km with a speed of 1.3 Mach. It passes over a…

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Q: A man stands by the roadside when an ambulance passes by him with constant velocity 18 m s-1. The…

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Q: A spaceship is approaching a space station at a speed of 3.30 ✕ 105 m/s. The space station has a…

A: in this problem, the given data-   the speed of spaceship is v=3.30×105m/s frequency of light f=…

Q: A police siren has a frequency of 500 Hz. An observer moving East with 20 m/s heard it as with…

A: This problem is related to Doppler effect of sound. It states that if the source or the observer or…

Q: The speed of ultrasound in human body is 1540 m/s. A procedure is performed with a frequency of 2…

A:

Q: A train traveling at 40 m/s has a horn that vibrates at a frequency of 200 Hz. Calculate the…

A: Given: The speed of the train is vs=40 m/s. The speed of the bicycle is vo=10 m/s. The frequency of…

Q: The speed of a light wave in a certain transparent material is 0.679 times its speed in vacuum,…

A: We know the fact that  speed(v)=frequency*wavelength ⇒μ=Vλ

Q: Careless Doug is standing on the summit of Mount Whitney (elevation 14,505 ft) while his prudent…

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Q: Two train whistles have identical frequencies of 165 Hz. When one train is at rest in the station…

A: Data Given ,  Two train whistle have identical frequencies of 165 Hz  Two possibilities are either…

Q: A spaceship is approaching a space station at a speed of 2.00 × 10° m/s. The space station has a…

A: (a) The frequency of the beacon observed on the spaceship is fs=f0cc-v=5.97×1014Hz2.9979×108…

Q: An airplane traveling at v = 164 m/s emits a sound of frequency 5.90 kHz. At what frequency does a…

A:

Q: A train is moving  parallel to a highway with a constant speed of 20 m/s. A car is traveling with a…

A: Doppler effect is the difference in frequency of waves between a source and observer when they…

Q: A firetruck which is moving with a velocity 100km/h is producing a siren of frequency 1000HZ. The…

A:

Q: A spaceship is approaching a space station at a speed of 1.60 ✕ 105 m/s. The space station has a…

A: For doppler effect of lightf=f01+β1-β when source is moving towards observer

Q: Two submarines travel horizontally and in the same direction through ocean water. Submarine A…

A:

Q: A police car with its siren on approaches a stationary observer at a speed of 33 m/s. The frequency…

A:

Q: 2. A 2.0 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal…

A: frequency from source ϑ=2 MHz, Beat frequency ∆ϑ=85 s-1=85 Hz and speed of sound Vs=1500 m/s We need…

Q: child dropped a ball from a building. The sound of it hitting the water of the swimming pool below…

A:

Q: The wavelength of a traveling wave can be calculated if one knows the: A. frequency and speed. B.…

A: Formula used to find wavelength can be written as,                 Wavelength = Speedfrequency i.e,…

Q: A group of hikers hears an echo 1.30 s after shouting. How far away is the mountain that reflected…

A:

Q: Compared with the speed of a sound wave, a radio wave travels A. Most often, faster. B. Faster…

A: Step1 - Understanding the sound wave and radio wave in terms of their speed.              As we know…

Q: A projectile is approaching you at 50 m/s and whistling with a frequency of 300 Hz if heard by an…

A:

Q: A police car traveling at a speed of 30.0 meters per second sounds its siren, which has a frequency…

A: By the principle of Doppler's effect, the perceived frequency fp is given by, fp =…

Q: An airplane traveling at half the speed of sound emits a sound of frequency 4.52 kHz. (a) At what…

A: Given data: Frequency of the sound, fs=4.52 kHz = 4.52×103 Hz Let the speed of sound be v,…

Q: Submarine A is chasing submarine B at a depth of 250 m. Submarine A is travelling at a speed of 10…

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Q: A person stands at a point 380 m in front of the face of a sheer cliff. If the person shouts, how…

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Q: An ambulance is traveling East at 40m/s. The siren emits a fixed frequency of 440Hz. Each of the…

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Q: A person stands at a point 348 m in front of the face of a sheer cliff. If the person shouts, how…

A:

Q: (2) A 62 W (60 J/s) light bulb is 8.5% efficient, i.e. only 8.5% of the electrical energy it…

A:

Q: A train is moving parallel to a highway with a constant speed of 20 m/s. A car is traveling with a…

A: The train is moving at speed 20 m/s.  The car travels at speed 40.0 m/s.  The frequency of the car's…

Q: 1 A train approaching a hill at a speed of 40 km/hr sound a whistle of frequency 580HZ when it is at…

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Q: A 2.00 MHz sound wave travels through a pregnant woman’s abdomen and is reflected from the fetal…

A:

Q: A group of hikers hears an echo 1.10 s after shouting. How far away is the mountain that reflected…

A:

Electromagnetic Waves

Electromagnetic waves are waves that consist of magnetic field and electric field components perpendicular to each other. These field components are also perpendicular to the direction of propagation of the wave.