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Agata [3.3K]
3 years ago
6

Which of the following correctly describes the hierarchy that exists in the universe? A galaxy refers to all existing matter, en

ergy, and space that is held together by gravity. A galaxy is a collection of planets, their moons, and other objects in orbit around a central star. A solar system refers to all existing matter, energy, and space that is held together by gravity. A solar system is a collection of planets, their moons, and other objects in orbit around a central star.
Physics
2 answers:
Mkey [24]3 years ago
6 0
The correct hierarchy would be

-<span>A solar system is a collection of planets, their moons, and other objects in orbit around a central star.

</span><span>-A galaxy refers to all existing matter, energy, and space that is held together by gravity</span>
beks73 [17]3 years ago
3 0
<h3><u>Answer;</u></h3>
  • A galaxy refers to all existing matter, energy, and space that is held together by gravity
  • A solar system is a collection of planets, their moons, and other objects in orbit around a central star.
<h3><u>Explanation;</u></h3>
  • <em><u>The universe contains many galaxies and solar systems.</u></em>
  • <em><u>A galaxy </u></em>is a huge collection of gas, dust, and billions of stars and their solar systems.  A galaxy is held together by gravity. The galaxy that contains the Earth and its solar system is called the Milky Way.
  • <u>Solar System</u> consists of the stars, the Sun, and its orbiting planets, including the Earth, along with numerous moons, asteroids, comet material, rocks, and dust.

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Answer:

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The photo shows a system that consists of a person on a diving board. What change could you make to the system that would decrea
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B

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A basketball player does 2.43 x 105 J of work during her time in the game, and evaporates 0,1 '10 kg of water. Assuming a latent
olchik [2.2K]

The change in the player's internal energy is -491.6 kJ. The number of nutritional calories is -117.44 kCal

For this process to take place, some of the basketball player's perspiration must escape from the skin. This is because sweating relies on a physical phenomenon known as the heat of vaporization.

The heat of vaporization refers to the amount of heat required to convert 1g of a liquid into a vapor without causing the liquid's temperature to increase.

From the given information,

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The amount of heat loss is represented by dQ.

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∴

Using the first law of thermodynamics:b

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The number of nutritional calories the player has converted to work and heat can be determined by using the relation:

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2 years ago
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Average speed = total distance traveled / total travel time

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