11. Between two parallel plates there is a liquid layer of thickness d. Calculate the pressure that compresses the plates and the force that must be applied to separate the plates along the normal to their surface.
The contact angle О is equal to:
- for options 1-5: 10
- for options 6-10: 15
- for options 11-12: 30
Option 11
liquid chlorobenzene
b, mJ/m2 33
d, µm 0.6
Plate dimensions, mm
Width 10 Length 10

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