A child tries to drink water through a 1m straw.?

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A child tries to drink water through a 1m straw.?

A child tries to drink water through a 1m straw but finds that the water rises only 75cm. By how much has the kid reduced the pressure in her mouth below the atmospheric pressure?

Can someone explain how I do this question?

2007-12-19 08:46:02 · 1 answers · asked by Tomasz K 2 in Science & Mathematics ➔ Physics

1 answers

P=gph
P(generated) = g p h =
P(generated)=9.81 x 1000 x 0.75=7,360 N/m^2
(just fro infromation: 1 atm = 101,325 N/m^2)

2007-12-19 09:26:37 · answer #1 · answered by Edward 7 · 1⤊ 0⤋