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Tamiku [17]
3 years ago
12

What is the relative size and composition of the universe, a galaxy, and a solar system? Is the universe endless?

Physics
2 answers:
vichka [17]3 years ago
7 0
Yas, the universe is endless/infinte
aleksklad [387]3 years ago
3 0

Answer:

The end of the solar system is about 122 astronomical units (AU) away from the sun, where one AU is 93 million miles (150 million kilometers).

Most of the galaxies are 1,000 to 100,000 parsecs in diameter

The size of the universe is unknown

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Kelli weighs 425 N, and she is sitting on a playground swing that hangs 0.36 m above the ground. Her mom pulls the swing back an
kodGreya [7K]

Answer:

V = 3.54 m/s

Explanation:

Using the conservation of energy:

E_i = E_f

so:

wh = \frac{1}{2}mV^2

where w is te weigh of kelly, h the distance that kelly decends, m is the mass of kelly and V the velocity in the lowest position.

So, the mass of kelly is:

m = 425N/9.8 = 43.36 Kg

and h is:

h = 1m-0.36m =0.64m

then, replacing values, we get:

(425N)(0.64m) = \frac{1}{2}(43.36kg)v^2

Solving for v:

V = 3.54 m/s

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3 years ago
Why are there multiple versions of the scientific method?
gavmur [86]

Answer:

it's because some versions have more steps and others have less

4 0
3 years ago
A rock weighing 98 newtons is pushed off the edge of a bridge 50 meters above the ground. What was the kinetic energy of the roc
Ahat [919]
2,450 Joules,  kinetic energy is 1/2 mass x velocity squared.
3 0
3 years ago
What is the name given to this group of elements?
Marianna [84]
Your answer would be A. Halogens

6 0
3 years ago
What type of energy can take up space
Arada [10]

Answer:

Yes energy does take up space.

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Every form of energy has a defining characteristic; sound is the vibration of molecules, electricity is the movement of electrons, and mass is the thing that take up space.

8 0
3 years ago
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