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2021-04-30 16:48:53 Listen to the Music

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2021-04-27 19:50:30 News GK Finance
Riddle Idiom Quiz
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Can gravity form waves?

Yes, gravity can forms waves. Gravitational waves are ripples in spacetime that travel through the universe.

If you think of gravity as a force acting at a distance, it is difficult to visualize how gravitational waves could form. However, if you use the more accurate description of gravity that was developed by Einstein in his general theory of relativity, these concepts become more logical.

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2021-04-24 18:31:27 News GK Finance
Riddle Idiom Quiz
Dictionary Entertainment

Can wind travel faster than the speed of sound?

Yes, wind can travel faster than the speed of sound. Wind is just the bulk movement of a mass of air through space and is in principle no different from a train speeding along or a comet zipping through space. The only limitation on the bulk motion of objects with mass is the universal speed limit of the speed of light in vacuum.

The speed of sound is not a fundamental speed like the speed of light is. The speed of sound just describes how fast a mechanical wave travels through a material.

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2021-04-19 20:51:35 News GK Finance
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What keeps space empty?

Space is not empty. A point in outer space is filled with gas, dust, a wind of charged particles from the stars, light from stars, cosmic rays, radiation left over from the Big Bang, gravity, electric and magnetic fields, and neutrinos from nuclear reactions.

As the book "Nothingness: The Science of Empty Space" by Dr. Henning Genz describes, space is also filled with two things we can't directly detect: dark matter and dark energy.

Even if all these things could be removed and blocked out from a certain region of space, there would still be three things we could never remove according to Dr. Genz: (1) vacuum energy, (2) the Higgs field, and (3) spacetime curvature.

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2021-04-15 13:37:08 News GK Finance
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Dictionary Entertainment

Can a star turn into a planet?

Yes, a star can turn into a planet, but this transformation only happens for a very particular type of star known as a brown dwarf.

Some scientists do not consider brown dwarfs to be true stars because they do not have enough mass to ignite the nuclear fusion of ordinary hydrogen.

At the same time, some scientists do not consider brown dwarfs to be true planets either because they typically sit at the center of a solar system, just like a star.

Read about - Brown Dwarf

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2021-04-15 08:30:00 ‍Everyone wonders from time to time how to get additional income, especially when the financial situation is a model of instability.

This suggests that if you yourself do not understand financial instruments and don't learn how to invest, you will not get far. A good option is to start learning how to trade on a platform with a training demo account and a first deposit that's a comfortable amount. One platform worth recommending is Binomo. See for yourself: the interface is intuitive, even for a beginner, and there are trading strategies.

Basically, try it! Your results depend only on you! Open / Comment

2021-04-12 18:55:21 News GK Finance Entertainment
Riddle Idiom Quiz Dictionary

Since gravity is unlimited, can we use it as an infinite energy source?

No, gravity can not be used as an infinite energy source. In fact, strictly speaking, gravity itself can not be used as an energy source at all. You are confusing forces with energy, which are very different things.

Energy is a property of objects, such as balls, atoms, light beams, or batteries. In contrast, forces describe the interaction between objects. Forces are the way that energy is transferred from one object to another when they interact, but forces are not the energy itself. Gravity is a force, so it just provides one way for objects to exchange and transform energy to different states.

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2021-04-12 06:32:03 News GK Finance Entertainment
Riddle Idiom Quiz Dictionary

How can bats fly in the dark avoiding obstacles?

The ultrasonic waves produced by bats during flying are reflected back when they hit the obstacles. Hence, bats can find their path without any difficulty.

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2021-04-11 17:50:20 News GK Finance Entertainment
Riddle Idiom Quiz Dictionary

Why do the stars twinkle ?

Stars appear to twinkle because its light travels through different layers of space of varying densities. As a result the light from the stars bends and makes them appear to blink on and off.

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2021-04-11 06:32:03 Why is mercury used in thermometer?

Mercury is the only metal which is in liquid state even at the ordinary room temperature. Also, it uniformly expands when heated and does not stick to the walls of thermometer. Its high boiling point and low freezing point is the main reason for using it in ordinary thermometers.

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