nklohit
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THe question in "air pressure lesson".
When I was studying about the air pressure, my teacher showed some examples about them, that is, the water in an upside down glass with covered by a card always do not fall in gravity. Then the question followed. I asked my teacher "Why do the water fall in gravity when the card is taked off? ", but my teacher couldn't answer. I hope that some people in this forums can help me. Thank you.
When I was studying about the air pressure, my teacher showed some examples about them, that is, the water in an upside down glass with covered by a card always do not fall in gravity. Then the question followed. I asked my teacher "Why do the water fall in gravity when the card is taked off? ", but my teacher couldn't answer. I hope that some people in this forums can help me. Thank you.