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What is a force that exists between objects even if they are not touching?
Gravity is a force that exists between objects even if they are not touching. It is a universal force of attraction that acts over long distances.
Why is the gravity the dominant force among planets?
It acts at long distances.
How are gravity and strong nuclear force different?
Gravity is a universal force that acts between all objects with mass, while the strong nuclear force is a short-range force that holds atomic nuclei together. Gravity is much weaker than the strong nuclear force and acts over long distances, while the strong force is responsible for binding protons and neutrons together in atomic nuclei.
How does gravity compare and contrast to the strong force of nuclear energy?
Gravity is a weak force that acts over long distances, attracting masses towards each other. The strong nuclear force, on the other hand, is much stronger but operates only at very short distances inside the atomic nucleus to hold protons and neutrons together. Gravity is a universal force that affects all objects with mass, while the strong force is specific to interactions within atomic nuclei.
What is the difference between electromagnetic force and gravitational force in terms of their effects on objects?
Electromagnetic force is a force between charged particles that can attract or repel objects, while gravitational force is a force between objects with mass that always attracts them towards each other. Electromagnetic force is much stronger than gravitational force, but only acts over short distances, while gravitational force is weaker but acts over long distances.
Is a weak nuclear force a short or long range force?
The weak nuclear force is a short-range force. It acts over distances on the scale of atomic nuclei, which are very small compared to macroscopic scales.
How are nuclear force and electric force differnent?
Nuclear force is a short-range force that acts at the subatomic level to hold protons and neutrons together in an atomic nucleus. It is a very strong force compared to the electric force. Electric force, on the other hand, is a force between charged particles that acts over long distances and is responsible for interactions between electrons and protons in atoms and molecules.
Why does gravitational force predominate over electric force for astronomical bodies?
Gravitational force predominates over electric force for astronomical bodies because gravity is a long-range force that acts on all masses, while electric force is a short-range force that is much stronger at small distances but rapidly decreases with distance. In astronomical scales, the masses involved are much larger and the distances much greater, making gravity the dominant force. Additionally, astronomical bodies are typically electrically neutral overall, so electric forces between them are relatively weak compared to gravitational forces.
What type of force doesn't need contact between objects?
Gravitational force does not require contact between objects. It acts over long distances and is responsible for the attraction between masses, such as Earth pulling objects toward its center.
What quantity combines the strength of a force with how long the force acts on the object?
The quantity that combines the strength of a force with how long it acts on an object is called impulse. Impulse is calculated by multiplying the force by the time over which it acts on an object. It represents the change in momentum of the object.
What is the Force that exists between objects even in the absence of direct physical contact?
That force is called gravity, which is what keeps objects in the universe attracted to one another. It is a fundamental force of nature that acts over long distances and is responsible for the formation of stars, planets, and galaxies.
Is gravity the most effective force over long distances?
Yes, gravity is the dominant force over long distances in the universe. It is responsible for the structure of galaxies, the orbits of planets around stars, and the expansion of the universe itself.
