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
BaLLatris [955]
3 years ago
11

The sound of a police siren that is moving away has (1) _____ wavelengths, and one that is approaching has (2) ______ wavelength

s.
1) a. longer b. higher c. shorter

2) a. lower b. Longer c. shorter
Biology
2 answers:
noname [10]3 years ago
6 0
FIRST one (shorter)

SECOND one (longer)
Papessa [141]3 years ago
5 0
<h3><u>Answer;</u></h3>

A. Longer

C. Shorter

The sound of a police siren that is moving away has <u>shorter</u> wavelengths, and one that is approaching has <u>longer</u> wavelengths.

<h3><u>Explanation;</u></h3>
  • The pitch of the sound heard depends on the frequency of the sound wave. A higher frequency corresponds to a high pitch. Therefore, when the police siren is approaching an observer, the observed frequency increases and thus the observer hears a higher pitch.
  • <em><u>Conversely, when the police siren is moving away from an observer, then the frequency decreases and thus, the pitch of the sound heard is lower.</u></em>
  • <em><u>A higher frequency corresponds to a shorter wavelength, therefore, the shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound.</u></em>
You might be interested in
Which of the following are needed by all living things?
defon
I’m pretty sure it’s water, oxygen, and food. beacuse food provided both nutrients and an energy source.
4 0
3 years ago
What possible genotypes will the offspring have if the parents' blood types are O and AB?HELP PLEASE!!!
gulaghasi [49]

Answer:

. In most cases, an O parent and an AB parent will have only A or B kids.

8 0
3 years ago
How has evolution affected animal intelligence?
horrorfan [7]

Answer: they develop human like intelligence as time goes on

Explanation:

7 0
3 years ago
Where can the following organelle be found: Mitochondria. Also if it a multiple choice.
xxMikexx [17]

Answer:

all of them

Explanation:

Mitochondria are found in the cells of nearly every eukaryotic organism, including plants and animals. Cells that require a lot of energy, such as muscle cells, can contain hundreds or thousands of mitochondria.

BUT EACH CELL HAS A DEFINING TRAIT ABOUT THEM

-PROKARYOTIC-no nucleus

-PLANTS- cell wall. large central vacuole

-ANIMALS-multicellular might have more than one mitochondria

3 0
3 years ago
which scientist created test that helped confirm that bacteria and other microorganisms cause a variety of diseases
Crazy boy [7]

Answer:  Louis Pasteur

Louis Pasteur in 1860s, proposed germ theory. The theory was based upon the fact that diseases are caused by the microorganisms. He was officially the first to publish his work.

5 0
3 years ago
Other questions:
  • Where in a prokaryotic cell do the reactions of glycolysis occur?
    12·2 answers
  • HELP!!!!!
    8·2 answers
  • A culture of Spirogyra (an autotrophic alga) is maintained in a water solution containing dissolved carbon dioxide and a source
    9·1 answer
  • Neptune _____.
    14·2 answers
  • Which U.S. coast is this lobster from? Explain your reasoning.​
    13·1 answer
  • When cells are in a(n) ___<br> solution, they are maintaining homeostasis
    9·1 answer
  • Organisms in the clade Ecdysozoa undergo ecdysis to shed what structure?
    14·1 answer
  • The period during which a heart chamber is contracting is called . 2. The period during which a heart chamber is relaxing is cal
    13·1 answer
  • What is an inherited characteristic?
    15·2 answers
  • Which genetically modified organism will best prevent farmers from losing their crops during transport to grocery stores?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!