Physics Middle School

Choose all the answers that apply.

Stars:

usually seem bright if they are close to Earth
are terrestrial bodies
use their own matter to create nuclear reactions
generate their own energy
are classified primarily by temperature

Answers

Answer 1

Answer:

use their own matter to create nuclear reactions

generate their own energy

are classified primarily by temperature

usually seem bright if they are close to Earth

Explanation:

Answer 2

The answers that apply for the stars are 1,2,4 and 5. Stars usually seem bright if they are close to Earth.

What is a star?

A star is a heavenly body made up of a brilliant spheroid of plasma held together by gravity. The Sun is the closest star to Earth.

Many additional stars may be seen with the normal eye at night, but due to their great distance from Earth, they appear as stationary points of light in the sky.

The answers that apply for the stars are as follows;

1. Usually seem bright if they are close to Earth.

2. Stars are terrestrial bodies.

4. They generate their own energy.

5. Stars are classified primarily by temperature.

The answers that apply for the stars are 1,2,4 and 5.

To learn more about the stars, refer to the link;

https://brainly.com/question/24493066

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Related Questions

is yogurt a liquid or a solid.

Answers

Liquid
Not sure
Good luck
I don't know
Yogurt is something that can't exactly be categorized into liquid or solid. It can be a liquid, because it does eventually take up the space you put it in (like water does). But it can also be a solid, because it is fairly firm (like a brick).

Do you think a moving skateboard has energy? Why or Why not? What about a skateboard that is not moving?

Answers

Yes,

because it is moving which generates energy. ... Does a moving skateboard have energy? To move the energy, you had to transfer the potential energy to kinetic energy. This generates heat, light, or sound.

Mahiya and Mrinmoy are in a relay around a square field with each side of length 60m. First, Mahiya runs at a speed of 6 ms−1 for 60m to pass a baton to Mrinmoy. Then Mrinmoy runs 120m at 4ms−1 while Mahiya runs through the field to reach the other corner. Then Mrinmoy passes the baton. But Mahiya is now tired since she has been constantly running. So, she only runs at 3ms−1 for the final 60m. What is the average speed of the baton in ms−1?

Answers

The average speed of the baton can be determined by dividing the total distance travelled by the total time taken for that travelling.

[tex]Average\ Time = \frac{Total\ Distance}{Total\ Time}[/tex]

First, we will find the total distance, by adding the distances travelled by both Mahiya and Mrinmoy, while carrying the baton.

[tex]Total\ Distance = Distance\ Travelled\ by\ Mahiya\ to\ pass\ the\ baton\ to\ Mrinmoy\ +\ Distance\ Travelled\ by\ Mrinmoy\ to\ pass\ the\ baton\ to\ Mahiya\ +\ Final\ Distance\ Travelled\ by\\ Mahiya[/tex]Total Distance = 60 m + 120 m + 60 m = 240 m

Now, we will find the total time taken for this travelling. To find out the total time we will divide each distance travelled by the speed of the traveller during that distance:

[tex]Total\ Time = \frac{60\ m}{6\ m/s}+\frac{120\ m}{4\ m/s}+\frac{60\ m}{3\ m/s}\\\\Total\ Time = 10\ s\ +\ 30\ s\ +\ 20\ s[/tex]

Total Time = 60 s

Now, we finally find the average speed of the baton by using the formula:

[tex]Average\ Time = \frac{Total\ Distance}{Total\ Time}\\\\Average\ Time = \frac{240\ m}{60\ s}[/tex]

Average Speed = 4 ms⁻¹

Learn more about average speed here:

https://brainly.com/question/12322912?referrer=searchResults

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