Pressure in liquids and gases
2 marks · EasyA laboratory set of Magdeburg hemispheres has a surface area of 0.04 m². The atmospheric pressure is 100,000 Pa.
(a)[2 marks]
Calculate the total force of the atmosphere on the outside of the hemispheres.
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(a) 4,000 N
Common mistakes: Mixing up area and pressure
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Marking points
M1 (a) · 1 mark · Correct method: F = p × A
A1 (a) · 1 mark · Correct answer 4,000 N
Worked solution