Question: A train whistles (f = 400 Hz) sounds higher or lower in frequency depending on whether it approaches or recedes. (a) Prove that the difference

A train whistles (f = 400 Hz) sounds higher or lower in frequency depending on whether it approaches or recedes.
(a) Prove that the difference in frequency between the approaching and receding train whistle is where u is the speed of the train and v is the speed of sound.
Δf = 2u / v / 1 ─ u2 / v2 f
(b) Calculate this difference for a train moving at a speed of 130 km/h. Take the speed of sound in air to be 340 m/s.

Step by Step Solution

★★★★★

3.29 Rating (149 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a b f fo VU 130 kmh36... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

P-M-S-W (58).docx

120 KBs Word File

Students Have Also Explored These Related Oscillations Mechanical Waves Questions!

Indicate how NPV can differ depending on whether it is measured from the parent MNCs point of view or from that of the foreign subsidiary, when cash flows may be blocked by local authorities.

A research center reports on a survey taken in which they asked whether respondents have heard "good news" about the job market. They compared those making $30,000 or less per year with those making...

The frequency of a stream train whistle as it approaches you is 538Hz. After it passes you, its frequency is measured as 486 Hz. How fast was the train moving (assume constant velocity)>

1. Ideal Gas Law: PI" = k?" where P is pressure, V is volume, T is temperature (in kelvins) and it is a constant of proportionality. A tank contains 2000 cubic inches of nitrogen at a pressure of 26...

9. The diagram below represents two waves traveling 14. The diagram below represents a transverse wave simultaneously in the same medium. At which of the traveling in a string. given points will...

Possible Multiple Choice Questions for the Exam. Focus on the topics discussed in class. Chapter 1 Multiple Choice Identify the choice that best completes the statement or answers the question. ____...

Week 3: No Plagiarism No content from other students papers. Post should be in APA 6th edition format, I will need References and in-text citations. This website should be useful for all APA...

Describing Data Once we have collected data from surveys or experiments, we need to summarize and present the data in a way that will be meaningful to the reader. We will begin with graphical...

; 20. The diagram below represents two waves, A and B, traveling through the same uniform medium. Wave A Which characteristic is the same for both waves? A) amPlitude B) period C) frequency 21. What...

Exercise one. 1. Let the market demand curve be P=1000 - 10Q. Assume the market is controlled by a monopolist. Let fixed cost be $10,000 and Marginal Costs (MC)=20Q. a) What is the profit maximizing...

Scott and Dave must design an ad for a bank client that has received public criticism during an economic downturn The message aims to respond to and neutralize the criticism This is an example of...

You are a business broker that buys and sells businesses, contracts and legal settlements of various types. You use a 14% minimum required return for all transactions. You are thinking about making...

Where are the capital expenditures shown in the financial projectiobs accomodated in the p & L and Balance sheet

Pumping out fancy clothing, handbags, jewelry, perfumes, and watches, the luxury goods industry had a challenging time in the Great Recession. In 2008, banks were failing left and right, unemployment...

Cris Turlock owns and manages a small business in San Francisco, California. The business provides breakfast and brunch food, via carts parked along sidewalks, to people in the business district of...

3. Identify which sequence of transformations could map pentagon ABCDE onto pentagon A"B"C"D"E", as shown below. ) dilation followed by a rotation 2) translation followed by a rotation A" 3) line...

Why do you think that Americans disapprove of congress by a wide margin but habitually reelect their own members of congress? In your response, discuss challenges your own representative or senators...

A recipe for cooking potatoes states that potatoes should be cooked in boiling water for 20 minutes to be properly prepared. Th is holds only for potatoes that have been diced into one-inch...

3-3. (Preparing a balance sheet) Prepare a balance sheet from the following informa- tion. What is the net working capital and debt ratio? Cash $ 50,000 Accounts receivable 42,700 Accounts payable...

Gen. Robert E. Lee's Boyhood Home is for Sale The historic Virginia home that Confederate Gen. Robert E. Lee grew up in hit the market in April 2018 for $8.5 million. (Trapasso, C.) Robert E. Lee's...

Please look at the question below and answer Thinking 17. Complete the table in identifying the sources of bias in the graph. [8 marks] Crime on the Rise in Ottawa 320000 300000 280000 911 Calls...