1.

The excess pressure inside a thin spherical bubble, of radius R and surface tension T, istrianglep. What is the work by this outward pressure - developed force during an infinitesimal increase dR in the redius ?

Answer»

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SOLUTION :THEWORK done, dW
= (excesspressure `xx` surface area ) `xx` DR
` =triangle p(4 pi R^(2)) dR`


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