The doppler effect is a change in the observed frequency if there is relative motion between
...
![subject](/tpl/images/cats/biologiya.png)
Biology, 09.10.2019 03:40 SoccerEden7274
The doppler effect is a change in the observed frequency if there is relative motion between
a. two sources
b. two observers
c. a source and an observer
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 00:00
Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 10:00
Which of the following human activities resulted in the growth of the north american deer population?
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 10:00
Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?
Answers: 2
![question](/tpl/images/cats/biologiya.png)
You know the right answer?
Questions
![question](/tpl/images/cats/istoriya.png)
History, 10.07.2019 19:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 10.07.2019 19:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.07.2019 19:10
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 10.07.2019 19:10
![question](/tpl/images/cats/health.png)
Health, 10.07.2019 19:10
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 10.07.2019 19:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 10.07.2019 19:10
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
History, 10.07.2019 19:10
![question](/tpl/images/cats/User.png)
SAT, 10.07.2019 19:10