A stationary police car emits a sound of frequency 1200 Hz that bounces off a car on

Question:

A stationary police car emits a sound of frequency 1200 Hz that bounces off a car on the highway and returns with a frequency of 1250 Hz. The police car is right next to the highway, so the moving car is traveling directly toward or away from it.

(a) How fast was the moving car going? Was it moving toward or away from the police car?

(b) What frequency would the police car have received if it had been traveling toward the other car at 20.0 m/s?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

University Physics with Modern Physics

ISBN: 978-0133977981

14th edition

Authors: Hugh D. Young, Roger A. Freedman

See More Books

Question Posted: Oct 30, 2018 12:16 PM

See More Questions

A lidar (laser radar) gun is an alternative to the standard radar gun that uses the Doppler effect to catch speeders. A lidar gun uses an infrared laser and emits a precisely timed series of pulses...
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 523 Hz and has a speed of 32.2 m/s. The motorcycle has a speed of 14.8 m/s. What frequency...
A car is accelerating while its horn is sounding. Just after the car passes a stationary person, the person hears a frequency of 966.0 Hz. Fourteen seconds later, the frequency heard by the person...
JinsAppliances has a return-on-assets (investment) ratio of 8 percent. a. If the debt-to-total-assets ratio is 40 percent, what is the return on equity? b. If the firm had no debt, what would the...
Alpha particles (charge q = +2e, mass m = 6.6 10-27 kg) move at 1.6 106 m/s. What magnetic field strength would be required to bend them into a circular path of radius r = 0.14 m?
In Integrative Case 10.1, we projected financial statements for Walmart Stores for Years +1 through +5. The data in Chapter 12, Exhibits 12.17 through 12.19 include the actual amounts for 2015 and...
An axial flow compressor stage shown in Fig. P12.66 has the inlet and outlet velocity diagrams shown. Calculate the work per unit mass. Quantities are \(U_{1}=U_{2}=U=762 \mathrm{ft} / \mathrm{s},...
If you buy a callable bond and interest rates decline, will the value of your bond rise by as much as it would have risen if the bond had not been callable? Explain.
You expected to receive $1,000 today, $1000 one month from now and $1000 two months from now. What is the present value of these cash flows if the dicount rate is 12% APR wit monthly compounding?
Given the information provided in the chapter, discuss the psychological phenomena associated with Martha Stewarts investment decisions.
Small speakers A and B are driven in phase at 725 Hz by the same audio oscillator. Both speakers start out 4.50 m from the listener, but speaker A is slowly moved away (Fig. E16.34). (a) At what...
A long, closed cylindrical tank contains a diatomic gas that is maintained at a uniform temperature that can be varied. When you measure the speed of sound v in the gas as a function of the...
Four sales representatives for a company are to be chosen at random to participate in a training program. The company has eight sales representatives, two in each of four regions. What is the...
What is on your mind? What do you want to share? What are you curious about? What do you want the instructor to explain in more detail? What insights do you want to put out there? What crazy,...
Assume that a daytime 30-second commercial on Nickelodeon's "Inspector Gadget" costs $9,000 in a particular market. The show has a total target audience of 45,000 children ages ages 6-12. There are...
Write a new patient encounter report explaining the concepts below and how you would communicate to the client and perhaps her daughter. Address the following: Explain the importance of autonomy,...
GAAP (Generally Accepted Accounting Principles): 1. What is GAAP and why is it important in the field of accounting? 2. What are the core principles of GAAP? 3. How does GAAP impact financial...
Draw on scholarly material to discuss the topic of " Hospital competition and its impact on prices " please include three graphs from one or more scholarly sources, feel free to draw on empirical...
Find the potential and complex potential between the coaxial cylinders of axis 0 (hence the vertical axis in space) and radii r 1 = 1 cm, r 2 = 10 cm, kept at potential U 1 = 220 V and U 2 = 2 kV,...
Which of the following gives the range of y = 4 - 2 -x ? (A) (- , ) (B) (- , 4) (C) [- 4, ) (D) (- , 4] (E) All reals
A jungle veterinarian with a blow-gun loaded with a tranquilizer dart and a sly 1.5-kg monkey are each 25 m above the ground in trees 70 m apart. Just as the hunter shoots horizontally at the monkey,...
A toy rocket is launched with an initial velocity of 12.0 m s in the horizontal direction from the roof of a 30.0-m-tall building. The rockets engine produces a horizontal acceleration of (1.60 m/s 3...
An Errand of Mercy. An airplane is dropping bales of hay to cattle stranded in a blizzard on the Great Plains. The pilot releases the bales at 150 m above the level ground when the plane is flying at...
A project that costs $4,450 to install will provide annual cash flows of $1,500 for each of the next 6 years. a. What is NPV if the discount rate is 11%? b. How high can the discount rate be before...
Prove MM1: Both Umbrella Inc. and Prixxa Inc. produce $300,000 of cash flow each year. Umbrella has no debt outstanding, and its cost of equity capital is 14 percent. But Prixxa has 1,000,000 depts...
How did they find the over head rate percentages for current year and last year? A job order cost sheet for Cullumber Company is shown below. Job No. 92 For 2,000 Units Date Direct Materials Direct...

A stationary police car emits a sound of frequency 1200 Hz that bounces off a car on

Question:

Step by Step Answer:

IDENTIFY Apply the Doppler shift formulas We first treat the stationary police car as th...View the full answer

University Physics with Modern Physics

Students also viewed these Physics questions