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Find out the energy stored in a soap bub...

Find out the energy stored in a soap bubble of diameter 4cm. Surface tension of soap solution = 0.07 N/m.

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Energy, `W=SxxA=0.07xx4piR^2xx2=0.07xx4xx(22)/7xx(2/(100))^2xx2`
or, `W=7.04xx10^-4` Joule.
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