Its a tightly-packed particles gain energy, allowing them to move more freely.
Answer:
The heat causes the molecules on rubbing surfaces to move faster and have more energy.
Answer:
Gravity
Explanation:
Gravity is a force that pulls the surface of the earth and keeps the planets in orbits around the sun.
Answer:
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Sound created in a big hall will persist by repeated reflection from the walls until it is reduced to a value where it is no longer audible. The repeated reflection that results in this persistence of sound is called reverberation. In an auditorium or big hall excessive reverberation is highly undesirable
Explanation:
thanks....
Black hole, it sucks in pretty much everything in its path
