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zysi [14]
3 years ago
11

For stars to form, the temperature of the hydrogen in a nebula must be more than 14 million Kelvin. How did gravitational attrac

tion help achieve these high temperatures?
Physics
2 answers:
tensa zangetsu [6.8K]3 years ago
7 0

Answer:

the short version is density

Explanation:

so the outer part of the nebula is cold and dark 10-20k but at this temutre the gas clumps together heating it up more mass = more gravity = more heat and the gravity will pull more mass that will give the proto star the spherical shape we all know and love

grandymaker [24]3 years ago
5 0

Answer:

Gravitational attraction caused the volume of the nebula to decrease, which raised the particle motion and temperature at the center of the nebula to the necessary 14 million Kelvin.

Explanation:

Plato/edmentum sample answer

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CaHeK987 [17]
It will take the stream 35 minutes to fill 14,700 cubic meters of water
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3 years ago
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What is the acceleration of a car that starts from rest and achieves a speed of 45 m/s in 5 seconds?
bagirrra123 [75]

Answer:

9m/s^2

Explanation:

solution,

Given. Initial velocity (u)=0m/s

Final velocity (v)=45m/s

Time taken(t)=5sec

Acceleration (a)=?

we know,

a=v-u/t

=45-0/5

=45/5

=9m/s^2

Therefore acceleration (a)= 9m/s^2

4 0
2 years ago
What is the best explanation for the observation that the electric charge on the stem became positive as the charged bee approac
topjm [15]

Answer:

Option B seems to be the appropriate choice,

Explanation:

The given question is incomplete. Please find the attachment of the complete question.

  • From either the principle or law of the Coulombs, there would have been either pressure (force) through attachment or repulsion amongst charges.  
  • It is evident from the analysis presented that perhaps the bee becomes positively (+) charged and would have been drawn either by negatively (-) charged roots of the plants or stem.    

As a consequence, the vegetation is electric current polarized because as activated bee pursued.

3 0
2 years ago
Please help ASAP please ASAP
alina1380 [7]
The answer to your question is 185
5 0
3 years ago
A car and a truck are moving next to each other on the highway. The truck has a mass of 910 kg and the car’s mass is 227 kg. IF
eimsori [14]

Answer:

<h2>the car must move with the speed</h2><h2>v = 72.16 m/s</h2>

Explanation:

As we know that the momentum of the car and truck is same

so as per the formula of momentum we have

P = mv

so we have

m_1v_1 = m_2v_2

so we will have

910 \times 18 = 227 v

v = 72.16 m/s

So the car must move with the speed

v = 72.16 m/s

3 0
2 years ago
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