Common questions

Why gravitational force is called weak force?

Why gravitational force is called weak force?

Gravity is a real weakling – 1040 times weaker than the electromagnetic force that holds atoms together. According to string theorists’ best ideas, gravity is so weak because, unlike the other forces, it leaks in and out of these extra dimensions.

What is gravitational force of a black hole?

A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.

How would the gravitational force between the earth and moon differ if the moon is twice as far as it is now?

How would the gravitational force between the earth and the moon differ if the moon were twice as far as it is now? It would decrease by less than two times. You just studied 7 terms!

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Which best describes the electromagnetic force it is weaker than the gravitational force with a greater range than the weak nuclear force?

Answer Expert Verified. Weak nuclear force is weaker than the strong nuclear force with a smaller range than the electromagnetic force. It acts between fermions with spin 1/2 basically quarks and leptons. It has a range of 10⁻¹⁸ meters.

Are black holes tears in space?

In a three dimensional universe, a black hole would seem to form in a slightly round form. But this is different from imagining the event horizon of a black hole, because the tear in space and time occurs only at the very center of the black hole, at the “singularity” which means point of infinite density.

Is dark matter just black holes?

Dark matter, the mysterious substance that exerts gravitational pull but emits no light, might really consist of vast concentrations of ancient black holes created at the very start of the universe, according to a new study.

Do black holes really exist?

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There is consensus that supermassive black holes exist in the centers of most galaxies. The presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation such as visible light.

How would the force of gravity between the Earth and the Moon change if the Moon had more mass?

Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.

How is the gravitational force between a pair of planets altered when the mass of one is doubled?

How is the gravitational force between a pair of planets altered when the mass of one of the planets is doubled? The force is doubled. How is the gravitational force between a pair of planets altered when they are twice as far apart? The force is 1/4 as much.

What is the weakest force in the universe?

Though it may seem odd, gravity is actually the weakest force we currently know of. It only attracts and doesn’t have a negative version of the force to push things apart. Though gravity is powerful enough to hold galaxies together, it is also so weak that we overcome it every day.

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What is the weakest form of gravity?

Gravity is so weak that the hydrogen bonding in a single drop of water, which is one of the weakest forms of the electromagnetic force, can overpower the gravity of an entire planet. Public Domain Image, source: Christopher S. Baird.

How much gravity can light orbit around a black hole?

Even stranger effects are predicted close to the black hole including that light can orbit at 1.5 times the Schwarzschild radius. The GR approach to gravity is fundamentally and philosophically different to Newtonian gravity.

What is gravitational force?

When objects which have mass are attracted to each other, then the force between them is known as Gravitational force. Gravity is all around us. It keeps the planets in our Solar System, for example, in orbit around the Sun. The Moon stays in orbit around the Earth also because of gravity.