A student wants to create a model to demonstrate the change in sound waves from a moving source. This is called the Doppler effect. Which model should the student create? MAAN İMAAAM Ar A B C D observer IAA observer MAAMİNAN observer observer
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A student wants to create a model to demonstrate the change in sound waves from a moving source. This is called the Doppler effect. Which model should the student create?
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- A train approaches a station and sounds its horn which has a natural frequency of 155 Hz. The train is travelling at 39 m/s and the speed of sound in air is 340 m/s . a . What frequency does a person standing at the station hear? b . What frequency does a person sitting on the train hear ?You drving in car 1 and your friend is drving in car 2 playing music at a frequency f. Van V is also driving on the same road. 1) Write an equation for the frequency you will hear generated by your friend and bounced off the van. Express the frequency you heard in terms of f. v car 1 = 100.0 km/h v car 2 = 80.00 km/h v van V = 60.00 km/h30 m from an ultrasonic sensor. The total travel time of the ultrasonic wave is 33 ms (milliseconds). What is the speed of sound in these conditions?
- An airplane approaches at an altitude of 10 km flying at 600 km/hr. a. Jet engines typically emit sound over a wide spectrum of frequencies, with the maximum sound energy at 200 Hz. From this emitted sound, what frequency do you hear initially when it is 1 minute away, and what frequency do you hear 1 minute after it has passed by? b. What would you hear, and when would you hear it, if the plane were "hypersonic", traveling three times the speed of sound, or "Mach 3"? That's approximately the fastest military aircraft in routine service today. To have higher speeds in air takes considerably more energy. For example, after two and half minutes of flight, when the first-stage main engines of the Space X Falcon shut down, it is 80 kilometers high and moving at Mach 10 on its way to Earth orbit. The Mach number depends on the temperature of the air.The warning tag on a lawn mower states that it produces noise at a level of 99.0 dB. What is this in W/m2? W/m2 Additional Materials O ReadingA sound wave coming from a tuba has a wavelength of 1.10 m and travels to your ears at a speed of 253 m/s. What is the frequency of the sound you hear? a. 278 Hz b. 1/278 Hz c. 230 Hz d. 1/230 Hz e. 252 Hz
- The Doppler effect is A heard when a siren approaches, passes, and recedes from a listener. B an illusion created by the brain it is absent in the physical sound wave. C perceived based on a comparison between the two ears. D All of the above.When poked by a spear, an operatic soprano lets out a 1047 Hz shriek. What is its wavelength (in m) if the speed of sound is 345 m/s? m Additional Materials O ReadingThe speed of sound in air is 330 m s-¹ 1. A motorcyclist travelling at a speed of 29 m s-¹ sounds the horn on their motorbike while passing a pedestrian beside the road. The rider hears the horn as a sound of frequency 250 Hz. a. What frequency does the pedestrian hear: i. when the motorcycle approaches? ii. when the motorcycle moves away? b. Explain why, when the motorcycle is right in front, the pedestrian hears the same frequency as the rider. D
- A tranverse wave in a medium wave is described by the following equation: y(x,t) = (12 m)cos(3.0x - 120t). What is the speed of this wave? (x and y describe real space with units of meters, and t is time in seconds.) a. 30 m/s b. 50 m/s c. 60 m/s d. 70 m/s e. 40 m/sSound travels at an estimated speed of 344 * m/s c a sound wave has a frequency of 2500 HzWhat is the distance between the crests of each wave?n.com - ClosetMaid 156 X Ebern Designs Cimino Desk & UO Home Décor + Apartment Sale X + gen/Iti/main.uni ent PRINTER VERSION ( BACK Chapter 16, Problem 025 Your answer is partially correct. Try again. = 7.19 m/s. The wave is A wave has the following properties: amplitude = 0.371 m, period traveling in the -x direction. What is the equation for the wave? = 0.770 s, wave speed %3D 0.371 У 3 1.13 8.16 rad/s *sin( *x) SHOW HINT LINK TO TEXT By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your udy instructor. Question Attempts: 2 of 6 used SAVE FOR LATER SUBMIT ANSWER Earn Maximum Points available only if you MacBook Pro Q Search or type URL %23 & 3 5 8 de т н K в N. * 00 C.