![subject](/tpl/images/cats/fizika.png)
Physics, 05.05.2020 09:36 momof7hardings
The Doppler effect is an effect produced by a moving source of sound or electromagnetic waves due to the relative motion of a source or a receiver. If an emergency vehicle approaches Bob and moves away from Jill, how does the frequency of the siren change?
A) Neither Bob or Jill perceive any change in the frequency of the siren.
B) As an emergency vehicle approaches Bob the frequency appears to increase.
C) As an emergency vehicle moves away from Jill the frequency appears to increase.
D) Bob does not notice any change until the vehicle passes him and the siren increases.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:00, itsyagirl11076
Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?
Answers: 1
![image](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 08:10, jenhorton2011
Ais a multilevel way of grouping items based on common properties among them. a. memory b. conceptual hierarchy c. schema d. semantic network
Answers: 1
![image](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 11:00, kyleap984ovm04g
What radiation has a higher frequency than visible light
Answers: 1
You know the right answer?
The Doppler effect is an effect produced by a moving source of sound or electromagnetic waves due to...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.11.2020 15:30
![Konu](/tpl/images/cats/istoriya.png)
History, 24.11.2020 15:30
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.11.2020 15:30
![Konu](/tpl/images/cats/mat.png)
Mathematics, 24.11.2020 15:30
![Konu](/tpl/images/cats/informatica.png)
Computers and Technology, 24.11.2020 15:30
![Konu](/tpl/images/cats/himiya.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/en.png)
English, 24.11.2020 15:30
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 24.11.2020 15:30