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PtichkaEL [24]
3 years ago
14

) So we are in a Universe with no center and no edge, but it is expanding... and it might be infinite. And it is all space and t

ime and mass and energy, but was born out of nothingness. What do you think about this? Does it seem sensible and natural or do you find it odd and confusing? Can you think of any better explanation for what we see? I would like your answer to be at least five (5) sentences long.
Physics
1 answer:
nekit [7.7K]3 years ago
8 0

Answer:

Explanation:

A lot of physicist and many cosmologist believe by their research works on quantum fluctuation that it is possible for the universe to be created out of nothing. They believe and has almost proved that particle comes in and out of existence from empty space. This idea led them believe that big bang singularity also came out of nothing (hyperspace) by quantum fluctuation creating positive and negative energy of equal amount. Thus conserving  law of energy. In this scenario, positive energy is matter and negative energy is gravity so total energy of universe/big bang singularity is zero. Therefore, it is plausible for our universe to come out of nothing on its  own. But why universe came into existence it's own confirming  the idea of 'why there is something rather than nothing' as Lawrence Maxwell Krauss hypothesized could be correct.

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Atoms ere electrically neutral because they have equal number of protons and electrons.  If an atom lose or gain one or more electrons it becomes an ion.

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Alex777 [14]

Answer:

High speed optical communication technology

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Explanation:

Space exploration involves going into the space, beyond the earth's atmosphere. Landing on other planets and studying their details, going into deeper space beyond the planets to discover new cosmic events or structures is all a part of space exploration.

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If a boat and its riders have a mass of 900 kg and the boat drifts in at 1.4 m/s how much work does sam do to stop it?
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After Sam stops it, the final kinetic energy of the boat+rider is
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For the law of conservation of energy, the work done by Sam is the variation of kinetic energy of the system:
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