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liberstina [14]
3 years ago
13

The table shows chronological events in the life of our Sun, a medium-sized star. Place the missing events into the correct rows

of the table.

Physics
1 answer:
SCORPION-xisa [38]3 years ago
4 0

Answer:

The Sun is a medium sized star present at the center of the solar system. It is primarily formed of Hydrogen and Helium. Like other stars, Sun was also born in a Nebula, and moved on to become a Main sequence star. It has a lifespan of about 10 billion years. At the end of its life when all the hydrogen fused into higher elements, the Sun would eventually throw out majority of its mass and the core would survive as a white dwarf.

The correct chronological order of events is:

1. A nebula located in the Milky Way galaxy begins pulling nearby hydrogen atoms in its orbit.

2. The Nebula shrinks in its volume due to gravity, becoming denser and hotter. But, it's not hot enough for nuclear fusion.

3. The temperature in the core of the Nebula reaches 14 million Kelvin.

4. Hydrogen atoms begin shedding their electrons and colliding with one another.

5. The Sun enters the main sequence stage. The energy created as a result of  its radiation begins nurturing life on planet such as Earth.

6. The Sun uses up all the hydrogen in its core.

7. The Sun expands greatly and cools . It is larger and redder.

8. The Sun completely runs out of hydrogen to fuse. Its outer layers are pushed away, and a cloud of ionized gas surrounds its core.

9. The Sun is a white dwarf with a dim glow.

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A 75-m-long train begins uniform acceleration from rest. the the train has a speed of 23 m/s when it passes a railway worker tan
Lapatulllka [165]

Answer:

acceleration a = 1.04 m/s2

Explanation:

Assume the train has a speed of 23m/s when the last car passes the railway workers. Once this happens the last car would have traveled a total distance of the 180m distance between the railway worker standing 180 m from where the front of the train started plus the 75m distance from the first car to the last car:

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We can use the following equation of motion to find out the distance traveled by the car:

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Answer:

See explanation

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