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Module 2. Physics
A cylinder filled with water to half a metre will exert a pressure of
•  4.9 Pa.
•  4900 Pa.
•  49 Pa.

Richiegeee asking:
•  Hi, can someone please explain?

Community comments: 3
dimky
Posts: 509
03.06.2015 / 22:56
Pressure = density * gravity * height = 1000 (for water) * 10 * 0.5 = 5000 Pa. Answer is 4900 Pa because gravity is slightly less than 10 (9.81 to be exact)
Richiegeee
Posts: 7
03.06.2015 / 23:09
Thanks
Alberto1989
Posts: 1
29.01.2019 / 23:43
Hi dimky, wasn’t a PRESSURE = force / area? There is another question wich ask the uniti of measure of the pressure, and the correct answer is N/m*2. Thanks
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