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Question

The surface tension of water in contact with air at 18C is 0.073 N/m. The pressure inside a droplet of water is to be 0.02 N/cm2 greater than the outside pressure. Calculate the diameter of the droplet of water.

A
0.73 mm
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B
1.47 mm
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C
1.45 mm
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D
1.46 mm
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