LEARN MOREREMARKS If the train were going away from the observer, vs = -40.0 m/s would have been choseninstead.QUESTION Does the Doppler shift change due to temperature variations? If so, why? For typical dailyvariations in temperature in a moderate climate, would any change in the Doppler shift be bestcharacterized as nonexistent, small, or large?No. Temperature does not enter into the calculation of the Doppler shift.Yes. A change in temperature changes the speed of sound and the Doppler shift, causing changes ofa few percent.Yes. A change in temperature changes the speed of sound and the Doppler shift, but onlyinsignificantly.Yes. A change in temperature changes the speed of sound and the Doppler shift, easily doubling ortripling the size of the shift.PRACTICE ITUse the worked example above to help you solve this problem. A train at a speed of 36.4 m/s sounds itwhistle, which has a frequency of 5.06 x 10² Hz. Determine the frequency heard by a stationary observeras the train approaches the observer. The ambient temperature is 21.7°C.Enter a number. differs from the correct answer by more than 10%. Double check your calculations. Hz EXAMPLE 14.4GOAL Solve a Doppler shift problem when only the source is moving.Listen, but Don't Stand on the TrackPROBLEM A train moving at a speed of 40.0 m/s sounds its whistle, which has a frequency of5.00 x 10² Hz. Determine the frequency heard by a stationary observer as the train approaches theobserver. The ambient temperature is 24.0°C.STRATEGY Get the speed of sound at the ambient temperature using the relevant equation, thensubstitute values into the Doppler shift equation. Because the train approaches the observer, the observedfrequency will be larger. Choose the sign of vs to reflect this fact.SOLUTIONCalculate the speed of sound in air at T= 24.0°C.The observer is stationary, so vo = 0.The train is moving toward theobserver, so vs = 40.0 m/s (positive).Substitute these values and the speedof sound into the Doppler shiftequation.v = (331 m/s) √T/ 273 K(331 m/s) √(273 + 24.0) K/ 273 K==fo=fs (v + voV - VS= 566 Hz= (5.00 x 10² Hz)345 m/s345 m/s345 m/s - 40.0 m/s

Given T=21.7oC=21.7+273=294.7 k (air temperature) Now velocity of sound can be determined using the…

PRACTICE IT Use the worked example above to help you solve this problem. A train at a speed of 36.4 m/s sounds it whistle, which has a frequency of 5.06 x 102 Hz. Determine the frequency heard by a stationary observer s.the.train.approaches the observer. The ambient temperature is 21.7°C.

PRACTICE IT Use the worked example above to help you solve this problem. A train at a speed of 36.4 m/s sounds it whistle, which has a frequency of 5.06 x 102 Hz. Determine the frequency heard by a stationary observer s.the.train.approaches the observer. The ambient temperature is 21.7°C.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Problem 2. The redshift is defined to be the quantity Job – Xem Xem where Aob and Aem are respectively the wavelengths at which radiation is observed and emitted. 1. Find the corresponding definition in terms of observed and emitted frequencies fob and fem. 2. The observed frequency of radio waves from a distant galaxy is 5 GHz. At the location of galaxy, the frequency is 6 GHz. Calculate the redshift of the galaxy. 3. If the galaxy was 500 Mpc away from the Milky way when the radio waves were emitted. How far away is this galaxy today?
The Andromeda Galaxy, M31, is the closest large spiral Galaxy to our Milky Way. When we lookat its chemical spectrum, we see that it's hydrogen alpha emission line has an observed wavelength of 655nm. a. Calculate z, being careful with the sign b. How fast is it moving in km/s c. Is it redshifted or blueshifted? Is it moving toward or away from us?
Exploring the Doppler effect. What would be an equation to find the frequency of the observer in case source and observer are moving relative to the sky? Can you explain the step step by step how you found the equation? Can you also pick up some values for the velocities? Why did you choose these values? Thank you
Explain what is meant by the Doppler Effect. Rationalize why Doppler broadening increases with increasing temperature and decreasing mass.
The star Alpha Centauri is 4.367 light vears from earth. What velocity do you need to travel at to reach this star in 1,447 years. Give your answer as a fraction of the speed of light (e.g. 0.406 for 0.406c) Round your answer to 3 decimal places. Add your answer Question 8 An electron is accelerated accross a voltage of 344kV. What is the momentuum of the electron? Use a value for the electron masss of 511 kevic. Give your answer in units of keWc (eg if the answer is 350 kevic write 350I Round your answer to 0 decimal places. Add your answer
M5NZY4NZI0/t/all ed you to learn and apply the relevance of dimensional analysis, Arithmetie and geometric progressions and use of tial, logarithmic and hyperbolic ions of statistical techniques e.g. me ion and use of probability theory in Engineering context. Hence, you have to perform following tasks. Furthermore, you also have to investigate Open with Google Docs ata. Pearon's correlation co-efficient, Linear The magnitude of the gravitational force, F, between the two planets of masses mị and m2 with centres at distanc x apart is given by F = G™ where G is a constant. a. By using dimension analysis, find the dimensions of G. b. The life time, t, of a planet depends on the its mass, m, its initial radius, R, and the constant G and dimensionless constant, K, so that t = mªG®R°. where a, B, y are constants. Find the values of a, ß and y.
The wavelength of a photon has been redshifted from 495 nm to 505 nm.What is the Redshift of the photon? What is the velocity of the photon source in both SI and US units? (2separate answers to 2 decimal places)
Where is an image located if it is viewed with a relaxed eye? For a simple magnifier where is the object located to produce an image that is viewed with a relaxed eye? What are the postulates of special relativity? Name two consequences of the postulates of special relativity. Why is the mass of a nucleus less than the mass of the particles that make it up? Comment on whether mass is or is not a conserved quantity. In a nuclear reaction name two quantities that are conserved?
Question A7 State three pieces of evidence that support the idea that the Universe began in a hot Big Bang, and explain how each piece of evidence supports the hot Big Bang model. Describe the ob- servational evidence that supports the idea that the Universe is pervaded by Dark Energy, and explain why each piece of evidence you cite supports the Dark Energy model.
The observed frequency of radio waves from a distant galaxy is 5 GHz. At the location of galaxy,the frequency is 6 GHz.1. Calculate the redshift of the galaxy.2. If the galaxy was 500 Mpc away from the Milky way when the radio waves were emitted. How far awayis this galaxy toda
Please explain the theory also. I need to understand the concept. Thank you in advance. A light of wavelength 620 nm is emitted from 5 Schwarzschild radii from a 20 solar mass black hole. What wavelength is observed for this light by an observer a long distance away? (The objects are not moving with respect to the observer)
High Mass Stars Problem 4. Black Holes The Schwarzschild radius determines the event horizon of a black hole. Construct the equation defining this radius using the fact that the escape velocity at this radius is c (the speed of light). Use M for the black hole mass and RS for the Schwarzchild radius. (Do not simply write down the equation, show and explain the logical steps of your construction and algebra)