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marusya05 [52]
2 years ago
11

Which force is responsible for determining the shapes of galaxies?.

Physics
1 answer:
Vilka [71]2 years ago
6 0

Answer:

Gravity

Explanation:

Gravity is what causes stars to form. During accretion, gravity pulls matter into a core, which can be a star, planet or black hole.

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Where is parallel circuits used?
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Answer:

if one bulb burns out, the other bulbs in the fixture continue to operate. Other uses include an electronic OR gate, where two switches are in a parallel circuit: one of the switches must be closed for the circuit to function.

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What's is the origin of Neptune's moon Triton?​
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A point charge of 4.0 µC is placed at a distance of 0.10 m from a hard rubber rod with an electric field of 1.0 × 103 . What is
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the electric potential energy of the point charge at 1.3 m is 5.2.

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Which of the following is an example of technology influencing science?
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I would say your answer is A.

7 0
3 years ago
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A 5.22×104 kg railroad car moves on frictionless horizontal rails until it hits a horizontal spring stopper with a force constan
In-s [12.5K]

To solve this problem we will apply the principles of conservation of energy, for which we have to preserve the initial kinetic energy as elastic potential energy at the end of the movement. If said equality is maintained then we can affirm that,

\text{Initial Energy}=\text{Final Energy}

\frac{1}{2} mv^2=\frac{1}{2} kx^2

Here,

m = mass

k = Spring constant

x = Displacement

v = Velocity

Rearranging to find the velocity,

mv^2 = kx^2

v^2 = \frac{kx^2}{m}

v = \sqrt{\frac{kx^2}{m}}

Our values are,

m = 5.22*10^4kg

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x = 32cm = 0.32m

Replacing our values we have,

v = \sqrt{\frac{(4.58*10^5)(5.22*10^4)}{0.32}}

v = 2.733*10^5m/s

Therefore the velocity is 2.733*10^5m/s

8 0
3 years ago
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