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Alexxx [7]
2 years ago
12

Dolphins communicate underwater using sound waves. This is called ________.

Physics
2 answers:
Ray Of Light [21]2 years ago
7 0

Answer:

D. echolocation

<h2><em><u>Ple</u></em><em><u>ase</u></em><em><u> mark</u></em><em><u> my</u></em><em><u> answer</u></em><em><u> the</u></em><em><u> brainliest</u></em><em><u> and</u></em><em><u> rate</u></em><em><u> me</u></em><em><u> 5</u></em><em><u> star</u></em><em><u> and</u></em><em><u> follow</u></em><em><u> me</u></em><em><u> </u></em></h2>

<em><u>pl</u></em><em><u>ease</u></em><em><u> </u></em><em><u>please</u></em><em><u> please</u></em><em><u> please</u></em><em><u> please</u></em><em><u> please</u></em>

sdas [7]2 years ago
6 0

Answer:

<u>D. echolocation</u>

Explanation:

Dolphins communicate underwater using sound waves. This is called <u>echolocation</u>

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MrMuchimi

D. Redefine the machine’s system boundaries.

The Law of Conservation of Energy states that energy can't be created not destroyed. Energy, however, can be changed from one form to another. The law applies to isolated systems only. By redefining and expanding the system (including all factors affecting it) , the machine's ability to do work should improve.

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If a distant galaxy has a substantial redshift (as viewed from our galaxy), then anyone living in that galaxy would see a substa
mario62 [17]

Answer:

Option A

Explanation:

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This statement makes sense. The redshift means that we see the galaxy moving away from us, so observers in that galaxy must also see us moving away from them—which means they see us redshifted as well

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2 years ago
Plz help me! <br><br> How do electromagnetic fields work?
MrMuchimi

Answer:

Electromagnetic field, a property of space caused by the motion of an electric charge. A stationary charge will produce only an electric field in the surrounding space. If the charge is moving, a magnetic field is also produced. An electric field can be produced also by a changing magnetic field.

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2 years ago
The potential difference between the surface of a 3.0-cm-diameter power line and a point 1.0 m distant is 3.9 kV. Find the line
Korolek [52]

Answer:

The linear charge density is 5.19 X 10⁻⁶ C/m

Explanation:

The potential difference between two cylinders, is given as

V = (λ/2πε)ln(b/a)

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ε is the permittivity of free space = 8.9 X 10⁻¹² C

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2.1812 X 10⁻⁷ = 4.1997* λ

λ = 5.19 X 10⁻⁶ C/m

Therefore, the linear charge density is 5.19 X 10⁻⁶ C/m

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2 years ago
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