Science, asked by Gouri1111, 1 year ago

what makes a coaster placed over the rim of a glass of water stick even when you invert it?

Answers

Answered by amritstar
7
the air from surrounding force the coaster.

the outer aur responsible for that.
Answered by OneStarEdit56
4

Atmospheric pressure.

Normal air pressure is about 15 pounds per square inch.

The mouth of a glass might be about 4 square inches, so the air is pushing up on the coaster with a force of about 60 pounds.

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