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
prisoha [69]
3 years ago
5

Dolphins communicate using compression waves (longitudinal waves). Some of the sounds dolphins make are outside the range of hum

an hearing.
Upon spotting a hungry shark, dolphin A sends a message to dolphin B. To send this message as effectively as possible, dolphin A would

Question options:

send the message above the water when it jumps because air is more dense than water, and the sound would be louder above the water.


make a higher pitched signal because a higher pitch is a louder sound.


make a softer sound because the shark will not hear the softer signal.


send the message underwater because a more dense medium produces a louder and faster sound.
Chemistry
1 answer:
Aneli [31]3 years ago
8 0
The answer to your question is D. send the message underwater because a more dense medium produces a louder and faster sound.
You might be interested in
I NEED THIS ASAP TODAY PLEASSSSEEEEEE
alukav5142 [94]

Option C, mass would be same. Only the gravitational pull will be different

7 0
3 years ago
According to the bohr model of the atom which particles are allowed to exist, in any one of a number of a energy level
Licemer1 [7]
<span> the line-emission spectrum of an atom is caused by the energies released when electrons. releases energy of only certain values. </span>
5 0
3 years ago
How many moles of water are contained in 0.250 mole
BaLLatris [955]

Answer:

C. 40

Explanation:

there are 40 moles of water in a 0.250 mole. use the formula to find out

40.0 = 40.0 + 0

4 0
3 years ago
Read 2 more answers
What can break light apart
Hatshy [7]
Photons can sometimes break apart molecules
3 0
3 years ago
Which of the following is true about hydropower? It changes the surrounding ecosystem. It does not produce greenhouse gases. It
Whitepunk [10]

Answer:

A

Explanation:

One of the main complaints about hydropower is that it will change the ecosystem. You can read about the history of any dam and you will find that most of them have involved evacuation. That means that farmland was lost and replaced by a lake behind the dam. The energy comes from water cascading over the top of the dam to its bottom.

It does not produce radiation.

It does not burn fossil fuels. It's clean and does not pollute the air.

So there are no greenhouse gases involoved.

3 0
3 years ago
Other questions:
  • The job outlook for physical therapists
    12·2 answers
  • which of the following parts of a circuit would be considered a load ? Justify your answer by explaining your choices • light •
    15·1 answer
  • Tin (Sn) exists in Earth's crust as SnO2. Calculate the percent composition by mass of Sn and O in SnO2.
    10·2 answers
  • Match each word to it's correct meaning.
    11·1 answer
  • Rank the following solutes in order of increasing entropy when 0.0100 moles of each dissolve in 1.00 liter of water.
    11·1 answer
  • an atom of gallium has 31 proton and a mass number of 70 what is the atomic number for an atom of gallium
    10·2 answers
  • Hello, everyone!
    15·1 answer
  • What is the best definition for the atomic number in an element
    7·1 answer
  • Plz help 10 points!!!!!!
    14·2 answers
  • Pleaseeeeeeeee
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!