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Kamila [148]
3 years ago
3

A star begins its formation as gravitational forces cause instability within a

Physics
1 answer:
denis23 [38]3 years ago
6 0
<span>A star begins its formation as gravitational forces cause instability within a molecular cloud. This is caused by compression in the clouds, due to radiations emitted by the bigger stars. The molecular clouds are dense regions of gas and dust. The temperature inside is very cold, which allows atoms to fuse together and leads to the formation of the stars. </span>
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A boy starts from point A and walks 3 meters toward the south, then turns around and walks 7 meters toward the north. What is th
jolli1 [7]

Answer:

-3m+7m =  4m

Explanation:

As he walks south, he is going down 3m (-3m). Then he walks up 7m (+7m).

You subtract the final position from the initial position to get displacement.

7m - 3m = 4m

7 0
3 years ago
Who was albert einstien describe his contributions???
olga nikolaevna [1]

Answer:

Albert Einstein was from Germany he was born theoritical physicist, from childhood only he loved mechanical toys, he was highly gifted in Mathematics, He was a world citizen and a scientific genius too. His contribution were:

1) he developed the theory of relativity

2) he also discovered the process of nuclear fission

3)he developed the quantum theory of specific heat

4)theory of stimulated emission, on which laser device technology is based

5) law of photoelectric effect

hope it helped you :)

6 0
3 years ago
How is velocity different than speed?
spayn [35]
I hope this helps

velocity is the rate and speed of an objects moving.

Speed is the time rate an object is moving along a path
5 0
3 years ago
What causes differences in air pressure around the Earth?
Olegator [25]
Wind is primarily driven by differences in air pressure. These variations in air pressure are due to temperature differences caused by variations in solar energy received at the surface of the Earth.
7 0
4 years ago
Lily took 6 hours to complete a journey at an average speed of 58 km/h. For the first 4 hours, she travelled at an average speed
disa [49]

Answer:

92 km

Explanation:

Total distance = 6 x 58 = 348 km

Distance travelled in first 4 hours

= 4 x 64

= 256 km

Distance for rest of journey = 348 - 256 = 92 km

3 0
3 years ago
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