SOLUTION: A spherical drop of oil with diameter 3 mm falls on water surface and produces a circular oil film of radius 10 cm. Calculate the thickness of oil film.

Question 1090131: A spherical drop of oil with diameter 3 mm falls on water surface and produces a circular oil film of radius 10 cm. Calculate the thickness of oil film.
Found 2 solutions by Fombitz, ikleyn:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
The drop of oil has a volume of

The radius of the oil film needs to be convert to mm for consistency.
10cm=100mm
The cylindrical film has a volume of,

Set the two equal to each other,

Work that out for the height in mm.

Answer by ikleyn(52790) (Show Source): You can put this solution on YOUR website!
.
A spherical drop of oil with diameter 3 mm falls on water surface and produces a circular oil film of radius 10 cm.
Calculate the thickness of oil film.
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The drop of oil has a volume of cubic millimeters. The radius of the oil film needs to be convert to mm for consistency. 10 cm = 100 mm The cylindrical film has a volume of cubic millimeters. Set the two equal to each other, millimeters. Work that out for the height in mm.

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