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ss7ja [257]
3 years ago
7

Kepler improved the Copernican model of the universe by adding : string theory

Physics
1 answer:
Mashutka [201]3 years ago
6 0

Answer:

elliptical orbits

Explanation:

the earth revolves round the sun in an elliptical form

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A 20 kg wombat climbs 10 m up a tree. When it stops what is the wombats gravitational potential energy?
swat32

Answer:

2000J

Explanation:

PE = m*g*h

PE= 20kg*10m/s^-2*10m

PE= 2000J

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4 years ago
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WINSTONCH [101]
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4 years ago
Which of the following is not true about the sun
skelet666 [1.2K]

<u>Answer:</u>

"The Sun's diameter is about five times that of Earth" is not true about the sun.

<u>Explanation:</u>

The Sun at the pivotal of the solar system is a star and covers 99.86% of the total mass of the system. Approximately 73% mass of the sun is due to hydrogen gas while nearly 25% mass due to helium and for the remaining mass small amount of heavier elements like carbon, oxygen, neon and iron are responsible.

The diameter of the sun is 864,000 miles or 1.39 million km or 109 times of the Earth while mass is 330,000 times of the Earth's mass. Sun is a almost perfect sphere of hot plasma with internal convective motion responsible for production of a magnetic field through a dynamo process. And the most important source of energy on Earth for life.

6 0
4 years ago
Scientists would like to learn more about the seismic activity that occurs on Earth’s surface. They are set to take a journey to
Ludmilka [50]

Answer:

the questions they could ask would be:

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how do we know if we will run into a water pocket or a magma pocket?

Explanation:

3 0
3 years ago
Select the correct answer. A car is moving at a constant speed along a straight line. Which statement is true about the forces a
agasfer [191]

Answer:

i think try theanswer

Explanation:

proper

7 0
3 years ago
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