Ex./90 A car moving at 40 km/hr passes a factory as a siren of frequency 500 Hz is sounded. What does the frequency appear to be to the driver of the car before and after passing by the factory ? [Speed of sound in air = 340 m/s]
Q: A train approaching a station at the speed of 31.0 m/s sounds the 2400-Hz whistle. Assume the…
A: Given: Speed of sound, c = 341 m/sSpeed of train(source), v = 31 m/sFrequency of source, f = 2400…
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: A group of hikers hears an echo 2.00 s after shouting. How far away is the mountain that reflected…
A: Given: time after which echo is heard, t = 2.0 s speed of sound wave, v = 346 m/s
Q: A train whistle is heard at 750Hz as the train approaches a town. The train cuts its speed in half…
A: Given: The frequency of sound heard before slowing, f1 = 750 Hz The frequency of sound heard after…
Q: A bat flying at 5.05 m/s is chasing an insect flying in the same direction. The bat emits a 39.8-kHz…
A: Given values: Speed of bat, vs=5.05 m/s Speed of sound in air, v=343 m/s Frequency of chirp emits by…
Q: A mother hawk screeches as she dives at you. You recall from biology that female hawks screech at…
A:
Q: A bat flying at 5.20 m/s is chasing an insect flying in the same direction. The bat emits a 39.8-kHz…
A: speed of bat = 5.2 m/s frequency emitted = 39.8 KHzfrequency recieved by bat = 40.6 KHzspeed of…
Q: A school of dolphins is searching for a meal and uses echolocation to satiate themselves. They find…
A:
Q: Yellow light travels through a certain glass block at a speed of 1.97 ✕ 108 m/s. The wavelength of…
A:
Q: While hunting for moths to eat, a bat emits a chirp that lasts for 2.10 ms and then is silent while…
A: Given data: total time for bat to chirp is t = 2.10 ms speed for bat vb = 4.40 m/s speed for moth vm…
Q: You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see…
A: Given, The total time of sound travelling is 20.0 sec
Q: By comparing the frequency of a received echo with the known frequency of the emitted sound, SONAR…
A: The submarine at rest is capable of generating high-frequency pulses (SONAR) that can be detected by…
Q: A group of hikers hears an echo 4.00 s after shouting. How far away is the mountain that reflected…
A:
Q: On a 20°C°C night, a bat hovering in the air emits an ultrasonic chirp that has a frequency of 45…
A: It is given that, the temperature of the air is T=20°C the frequency of the source is f=45…
Q: An ambulance passes by a stationary observer releasing its siren at a frequency of 479Hz. The…
A: Given Data : The frequency of the siren is given as fs = 479 Hz. The difference between the…
Q: 80. The security alarm on a parked car goes off and produces a frequencyof 960 Hz. The speed of…
A: Doppler effect is the change in frequency of sound observed by a person due to the change in…
Q: 4. A bystander hears a siren vary in frequency from 594 Hz to 388 Hz as a fire truck approaches,…
A:
Q: An air controller on an aircraft carrier sees a jet fly over 81 meters above her and she hears the…
A: Speed of the jet = (140/81)*344 m/s
Q: A bystander hears a siren vary in frequency from 590 Hz to 368 Hz as a fire truck approaches, passes…
A:
Q: Microwaves travel at the speed of light, 3.00 ✕ 108 m/s. When the frequency of microwaves is 7.00 ✕…
A: Given C=3.00 ✕ 108 m/s f= 7.00 ✕ 109 Hz
Q: If a stationary dolphin emits a call at a sound frequency of 53 kHz. The sound wave reflects off a…
A: Original frequency of sound produced by stationary dolphin (f) = 53 kHz speed of sound (v) = 343 m/s…
Q: A car moving at 40 km/hr passes a factory as a siren of frequency 500 Hz is to be sounded. What does…
A: Given- n=500 Hz v0=40 km/h =40×10003600=11.11 m/s v=340 m/s vs=0 (stationary source)
Q: A siren placed at a railway platform is emitting sound of frequency 5kHz. A passenger sitting in a…
A: B
Q: A bystander hears a siren vary in frequency from 584 Hz to 370 Hz as a fire truck approaches, passes…
A: Ans:- Image-1
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: A bat flying at 4.60 m/s is chasing an insect flying in the same direction. The bat emits a 39.9-kHz…
A:
Q: What frequency is received by the observer "B" moving at 22 km/h away from a firetruck at rest which…
A: vo=Velocity of observer=22 km/h=223.6=6.11 m/svs=Velocity of the siren=372 Hzv=Speed of sound in…
Q: A group of hikers hears an echo 2.60 s after shouting. How far away is the mountain that reflected…
A: Given Data: Time(t)=2.60s Speed of sound (v)=349m/s To find: Distance(d)
Q: A group of hikers hears an echo 1.10 s after shouting. How far away is the mountain that reflected…
A:
Q: 30. A man drops a rock into a well and he hears the splash 3.00 seconds later. If the air…
A:
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