A protostar is _____.1.a region of space from which light cannot escape
2.a small star that will continue as a main sequence star for hundreds of billions of years
3.a star with a core of neutrons
4.the stage after a star completes its main sequence existence
5.the stage before a star becomes a main sequence star
Answers
Answer
5.the stage before a star becomes a main sequence star
Explanation
A protostar is a small star that is still gathering its masses. When it forms enough masses it make a parent molecular cloud.
This been the case, from the choices given, the correct statement about a protostar is;
5.the stage before a star becomes a main sequence star
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I hope this answer helps you.
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Answer:
The temperature of the gas is 48.75 Kelvin.
Explanation:
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Answers
-- The satellite IS falling, but it never reaches the ground because
it's also moving "sideways" ... in the direction of the orbit ... and
because the Earth is shaped like a sphere.
The satellite is moving sideways fast enough so that by the time
it falls 1 foot, the Earth's surface has curved down away from it
1 foot, so it's still the same distance from the Earth's surface.
-- A satellite doesn't fly off into space for the same reason that
a yo-yo doing "around the world" on the end of a string doesn't
fly off ... It's being held onto the circle by the tension in the string,
a force that keeps pulling it toward the center of the circle.
There's a force on the satellite too, that keeps pulling it toward
the center of the Earth. It's the gravitational force between the
Earth and the satellite.
The satellite doesn't fly off into space for the same reason that
YOU don't do that either.
The complex balancing act between a satellite's forward speed and the gravitational force pressing upon it prevents satellites in orbit from falling to the ground or shooting off into space.
When a satellite is put into orbit, it reaches a fast enough speed to escape the Earth's gravitational attraction.
By continuously falling towards the Earth and moving forward at the same time, the satellite may maintain a stableorbit.
This motion results in a curved course, which causes the Earth to be in a constant state of freefall.
Although the satellite is constantly being drawn towards the Earth by gravity, its forward velocity prevents it from dropping.
Thus, satellites don't fall or break free into space and are kept in a stable orbit.
For more details regarding satellite, visit:
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b. The majority of the protons are aligned.
c. The majority of non-metal atoms are aligned.
d. The majority of the atoms have been acted upon by gravity.