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Mrrafil [7]
4 years ago
5

A black hole is a star that has

Physics
1 answer:
Masteriza [31]4 years ago
7 0
A black hole is a star that has completely collapsed in on itself.
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What is the term for the total radiation that is reflected by a surface?
VMariaS [17]
The term used for the total radiation that is reflected by a surface is albedo. It is the percent of solar energy that is being reflected from our Earth back into the space.  It is a dimensionless value since it is a percentage and ranges from a value of zero (corresponds to a perfect black body where it absorbs all of the radiation) to one (corresponds to a white body where all radiation is being reflected). This term is very useful in astronomy, climatology and environmental management. The average albedo of Earth is found to range from 30 percent to 35 percent due to the clouds present in the atmosphere.
5 0
3 years ago
The angle at which light hits a surface (angle of incidence) and the angle at which it is reflected away (angle of reflection) a
ira [324]

Answer:

are always the same

Explanation:

angle of incident is equal to the angle of reflection i = r

the normal is perpendicular to the reflecting surface

8 0
3 years ago
1. A what is when the ball is hit out of the air before it bounces. volley, serve, bounce, rally.
vagabundo [1.1K]

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Volley (I believe)

Explanation:

3 0
3 years ago
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An outside force, Fo, brings two small metal spheres, A and B, at rest from a long distance away to a point where they are 1 met
Ksenya-84 [330]

Answer:

1)

The total work done by outside force is W_{o}=0.294J

2)

The total work done by the electric field is -W_{o} =-0.294J

3)

The potential energy of the two sphere system is  PE = W_{o} = 0.294J

4)

The magnitude of the acceleration of sphere A is a_{A} = 66.868m/s^2

5)

The magnitude of the acceleration of sphere B is a_{B} = 26.747 \ m/s^2

6)

The magnitude of velocity sphere A after a very long time is  v_{A} = 10.251 \ m/s\

7) The magnitude of velocity sphere B after a very long time is  v_{B} = 4.1 m/s

 

Explanation:

The explanation is shown on the first and second uploaded image

4 0
3 years ago
Which scientist goes with what atomic model? 100 points just because
Gnoma [55]

Answer:

Thomson To the first

Rutherford To the second

Dalton to the last

Explanation:

4 0
3 years ago
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