Answer: The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. ... increases, the force of gravity decreases. If the distance is doubled, the force of gravity is one-fourth as strong as before.
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The solar wind is a stream of charged particles made mostly of electrons and protons that flows outward from the Sun. It is caused by the hot solar corona expanding into the space. Corona is denser than the solar wind due to its ionized charged particles. Because solar winds are less dense than corona, they can travel 900km/s sometimes reaching the ionosphere of the earth.
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Answer:
Mercury
Explanation:
Mercury is a liquid element that contains 80 electrons when not charged.
motion
Explanation:
it works in our daily life
Answer:
This is a physical change because it's not permanent and no chemical reaction occurs. Mixtures - Mixing together materials where one is not soluble in the other is a physical change. Note the properties of a mixture may be different from its components.
Explanation:
The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
In a physical change, the molecules are rearranged while their actual composition remains same. In a chemical change, the molecular composition of a substance completely changes and a new substance is formed. Some example of physical change are freezing of water, melting of wax, boiling of water....