A radar emits microwaves with a frequency of 1.74x10^8 Hz, which propagate through the air at a speed of 2.998x10^8 m/s. After the reflection of the waves in a car approaching the emitter, this wave is detected with a difference of 418 Hz. How fast is the car?

Q: or moths to eat, a bat emits a chirp that lasts for 4.80 ms and then is silent while it listens for…

A: GivenTotal time taken=4.8 ms=4.8×10-3 s Bat is flying toward the moth at a speed of 4.40 m/sMoth is…

Q: A French submarine and a U.S. submarine move toward each other during maneuvers in motionless water…

A: Given, speed of french submrine vF speed of us submrine vUS The French sub sends out frequency f…

Q: A bat flying at 4.55 m/s is chasing an insect flying in the same direction. The bat emits a 39.9-kHz…

A: Here first we will calculate the frequency the insect hear and then the frequency of reflected the…

Q: If a wave has a period of 1.735 × 10−15 s and a wavelength of 520.0 nm, how fast is it travelling?

A: Given:T = 1.735 × 10−15 s λ = 520.0 nm = 520.0 x 10-9 m Solution:We know, speed of wave is given…

Q: we are moving away from a stationary cell phone tower at 25 m/s. If the frequency emitted by the…

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Q: A sound wave has a speed of 340m / s and a wavelength of 15 m. What is the frequency of the sound…

A: Given data:  Speed (v) = 340 m/s Wavelength (λ) = 15 m Required: Frequency (f)

Q: A speed radar aims microwaves with a frequency of 20 GHz at an incoming vehicle traveling at 135…

A: Given, Origianl frequency of the microwaves emitted by the speed radar is  f0=20GHz=20×109Hz Speed…

Q: Image the blood's speed? [No That i

A: The reflected wave dropper shift as,

Q: Problem 6: A stationary radar gun, positioned right next to a straight road, is aimed at a car,…

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Q: The light we observe from the jet in fig.has frequency of 6.66(10^14 hz) (in the far ultra voilet…

A: Above problem is related to the relativistic Doppler's effect. Unlike sound wave light requires no…

Q: Two cars A & B are travelling away from each other and blowing their horns. You are sitting in car B…

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: The figure below shows wave fronts of sound waves from the siren of a police car. Two people on both…

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Q: light travels in air at a speed of c=3 x 10^8 m/s.  what is the wavelength in nm (1nm= 10^-9 meter)…

A: Relation between wavelength and frequency is c=fλ (given) c is the speed of light in air = 3×108 m/s…

Q: 7. A patrol moves with a constant speed, sounding its siren with a frequency of 600 Hz. An observer…

A: The frequency emitted by siren (source), f=600 Hz The observer at rest observes frequency, fo=680 Hz…

Q: calculate the Doppler shift (the difference of the observed and emitted frequencies) for light from…

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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: *59. ssm mmh A dish of lasagna is heing heated in a microwave oven. The ef- fective area of the…

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Q: A police car is moving at 39.7 m/s to catch up with a speeder directly ahead. The speed limit is…

A: A police car moving at a speedwith a speeder directly ahead.The speed limit is 29.1 m/sThe police…

Q: dish of lasagna is being heated in a microwave oven. The effective area of the lasagna that is…

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Q: A bat's sqeak takes 0.146 s to retun after reflecting off a moth.  How far away is the bat from the…

A: The time to reach the moth is,

Q: The sun emits light (which we can regard as a sinusoidal wave) equally in all directions. The…

A: Given: The distance between sun and earth is d=1.50×1011 m. The intensity of light is I=1.36 kW/m2.…

Q: A police car is moving at 44.5 m/s to catch up with a speeder directly ahead. The speed limit is…

A: Given that: The speed of police car, vp= 44.5 m/s Speed limit = 29.1 m/s frequency of microwave…

Q: A Doppler radar emits waves of frequency @p. The radar is used for measuring the position and speed…

A: The figure showing the radar and plane is as follows:

Q: N cycles 4t (s) T (s) F (Hz) F fft( Hz) % Difference 10 7.91423 0.791423 1.169

A: No. Of cycles (N) = 10 Total time (4t) = 7.91423 s Time period (T) = 7.91423/10 = 0.791423sec Given…

Q: Ex. 92: A train blows a whistle of frequency 640 Hz in air. Find the difference in apparent…

A: To find-nA-nA'=?Given-Vs=72 km/hr=72×518=20 m/sV=340 m/sn=640 Hz

Q: A bowl of bulalo is being heated in a microwave oven. The effective area of the bulalo that is…

A: Area of the microwave is A = 1.6 x 10-2 m2 Mass of the bulalo is m = 0.25 kg Specific heat capacity…

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: Ex./90 A car moving at 40 km/hr passes a factory as a siren of frequency 500 Hz is sounded. What…

A: Given-n=500 Hzv0=40 km/hv0=40×518=11.11 m/sv=340 m/s vs=0 (stationary source)

Q: Police uses a 33.4 GHz radar gun to measure the car speed. A moving car makes a 30° angle with the…

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Q: The crew of a ship going 35.4 m/s towards a distress beacon hears a frequency of 11khz. What is the…

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Q: A periodic wave of wavelength 2.07m and frequency 1.47Hz propagates along a string.  What is the…

A: Given:- The wavelength of the wave λ= 2.07 m  The frequency of the wave = 1.47 Hz  Find:- The wave…

Q: An airplane is flying at speed 200 m/s with respect to the ground. Sound wave 1 is approaching the…

A: Let the Earth and the airplane are inertial reference frames. Frame S', in which the airplane is at…

Q: A police car is moving at 40.3 m/s to catch up with a speeder directly ahead. The speed limit is…

A:

Q: s(y,t) = (3.5nm) sin [(12.5 rad/m) y + (4340 rad/s) t] describes a soundwave. What is the velocity…

A: The displacement of the wave at equilibrium position y and time t can be expressed as, Here, A, k…

Q: Police car with siren travelling v = 28m/s with siren frequency = 436 hz. Speed of sound is 343m/s.…

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Q: The figure shows a transmitter and receiver of waves contained in a single instrument. It is used to…

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Q: A rocket on the ground vibrates at an audible frequency of 486 Hz. What is the frequency heard by an…

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Q: Police radar determines the speed of motor vehicles using the same Doppler-shift technique employed…

A: We have  Original frequency f=1.25 × 109 Hz  Apparent frequency…

Q: An observer standing by the side of a road hears the siren of an ambulance, which is moving away…

A: A

Q: In a loudspeaker, an electromagnetic coil rapidly drives a paper cone back and forth, sending out…

A: Frequency of the cone of a loudspeaker (f)=1.2 kHz Amplitude of oscillation of the cone (A)=3.5 mm