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qwelly [4]
3 years ago
5

Which list accurately identifies the hierarchy of space from largest to smallest? Solar system, galaxy, planet, universe Galaxy,

solar system, planet, moon Galaxy, solar system, universe, moon Solar system, universe, galaxy, moon
Physics
2 answers:
Oliga [24]3 years ago
8 0
<h3><u>Answer;</u></h3>

Universe, galaxy, solar system, planet, moon

<h3><u>Explanation;</u></h3>
  • <u>A galaxy</u>, such as our Milky Way Galaxy, is a collection of solar systems orbiting around a central core.
  • <u>A solar system</u> consists of a star, normally the sun and all of its planets, asteroids, comets and other bodies.
  • <u>A planet</u> is a nearly spherical body which is in orbit around the Sun. Planets are larger than moons.
  • <u>Moons</u> are typically rocky bodies which are in orbit around planets.
Semenov [28]3 years ago
8 0
Universe > Galaxy > Solar system > Planet > Moon

It's like a game of zooming in:

We exist in the universe.
Which galaxy? Milky way.
It's in the Solar system,
Which has 9 (or 8) planets.
And each planet has moons!
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Which one of these are considered as mechanical energy?
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Answer:

Kinetic energy and potential energy.

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8 0
2 years ago
A spring has a spring constant of 20 N/m. How much potential energy is stored in the spring as it stretched 0.20 m
makkiz [27]
The elastic potential energy (Ep) is given by Ep = \frac{1}{2}*k*x^2

Data: 
Ep = ? (Joule)
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Solving:
Ep = \frac{1}{2}*k*x^2
Ep = \frac{1}{2}*20*0.20^2
Ep =  \frac{20*0.04}{2}
Ep =  \frac{0.8}{2}
\boxed{\boxed{Ep = 0.4\:J}}\end{array}}\qquad\quad\checkmark
7 0
2 years ago
a stone is dropped from top of a tower of 50m high ,simltaneously another stone is thrown upward with a speed of 20m/s find the
aleksklad [387]
At the time that I'll call ' Q ', the height of the stone that was
dropped from the tower is

             H = 50 - (1/2 G Q²) ,

and the height of the stone that was tossed straight up
from the ground is

             H  =  20Q - (1/2 G Q²) .

The stones meet when them's heights are equal,
so that's the time when

                         <span>50 - (1/2 G Q²)  =  20Q - (1/2 G Q²) .

This is looking like it's going to be easy.

Add  </span><span>(1/2 G Q²)  to each side.
Then it says
                                             50  =  20Q

Divide each side by 20:          2.5  =  Q .

And there we are.  The stones pass each other

                                       2.5 seconds

after they are simultaneously launched.
</span>
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