Mechanical Properties of Fluids

Question: Surface tension of a soap solution is $1.9\times {{10}^{-2}}N/m.$. Work done in blowing a bubble of 2.0 cm diameter will be

1) $7.6\times {{10}^{-6}}\pi $joule

2) $15.2\times {{10}^{-6}}\pi $joule

3) $1.9\times {{10}^{-6}}\pi $joule

4) $1\times {{10}^{-4}}$joule

Solution:

Explanation: No Explanation

Surface tension surface energy

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