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Calculate the work done by the surfae tension force? [closed]

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A soap bubble or radius 0.56 is expanded to 1.12. If surface tension of the soap bubble is 30 dynes/cm then work done will be-:
a)180 erg
b)360 erg
c)720 erg
d)960 erg

closed with the note: insufficient effort
asked Jul 22, 2017 in Physics Problems by Team B.I (110 points)
closed May 14 by sammy gerbil
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