1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
xxTIMURxx [149]
3 years ago
11

Car A and Car B approach each other

Physics
1 answer:
vagabundo [1.1K]3 years ago
3 0

The original frequency of horn of Car A is 1071 Hz.

Explanation:

Doppler effect describes the change in the frequency of sound waves with respect to the observer. As the sound waves emitted from a source need to travel the air medium to reach observer, it will undergo loss in energy. So there will be change in its frequency compared to original frequency. Depending upon the direction of travel of source and observer the shifting of frequency will vary.

f'=\frac{v-v_{o} }{v-v_{s} } f

Here vo is the observer velocity and vs is the velocity of the source. So Vo = 15 m/s as car B is the observer and Vs = 35 m/s as car A is the source. And f is the frequency of sound wave at source that is car A.

Similarly, the doppler shift in frequency is the frequency of sound heard by car B which is f' = 1140 Hz. And v is the speed of sound that is v = 343 m/s

1140 = \frac{343-15}{343-35}*f= 1.0649 *f

f = 1140/1.0649= 1071 Hz.

Thus, the original frequency of horn of Car A is 1071 Hz.

You might be interested in
What are the characteristics of high energy wave?
Ivahew [28]

Answer:

D. High frequency and short wavelengths.

Explanation:

If a wave is high in energy it will have a higher frequency.

High frequency = short wavelengths

8 0
2 years ago
1. What is the average speed of a runner that<br> travels 100 meters in 9.7 seconds?
alexdok [17]

Answer:

10.30928 m/s

Explanation:

6 0
3 years ago
When the space shuttle coasts in a circular orbit at constant speed about the earth, is it accelerating? if so, in what directio
pochemuha
Yes. Acceleration means any change in speed or direction of motion. When an object coasts in a circular orbit at constant speed around the Earth, its direction is constantly changing. The acceleration is "CENTRIPETAL", which points toward the center of the circle.
5 0
3 years ago
Read 2 more answers
Name two types of evidence used to support the theory of evolution. Explain how scientists use each type of evidence to provide
bearhunter [10]
Well, one of the theories was that Charles darwin proved that theory evolution is real so that one theory. 
7 0
3 years ago
A ray in flint glass (n = 1.61)
Scilla [17]

Answer:0

Explanation:

0

4 0
3 years ago
Read 2 more answers
Other questions:
  • You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor.
    10·1 answer
  • 1. Consider three objects: Object A is a hoop of mass m and radius r; Object B is a sphere
    8·1 answer
  • Which state law would be considered unconstitutional based on the Fourteenth Amendment?
    5·1 answer
  • Charges of +5C and −9C are at a distance of 1m from each other. Which diagram represents the force between the two charges?
    7·2 answers
  • How many layers of the Earth are there, and what are these layer's names in order from centermost, to outermost, Brainliest for
    5·1 answer
  • What is the deBroglie wavelength of an electron moving at 1.37 x 106 m/s if the mass of the electron is 9.11 x 10-28 g
    9·1 answer
  • HELPPPPPP!!!! Jupiter has a gravity that is 2.4 times that of Earth. A person has a mass of 60kg. What is the mass of this perso
    15·1 answer
  • What is the mean height of the plants given no fertilizer?
    6·1 answer
  • Which coefficient is needed in front of NaNO3 to balance the equation Na2S + Zn(NO3)2 → ZnS + _NaNO3? 1, 2, 5, 7,
    15·1 answer
  • For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is s = 28.8 cm lon
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!