A soap bubble is blown to a diameter of 7 cm. If 36960 erg of work is done in blowing it further, find the new radius. The surface tension of soap solution is 40 dyne/cm. Share with your friends Share 3 Decoder_2 answered this Dear student,Work done in blowing a soap bubble =T×8π(R2final-R2initial)RFINAL=?Rinitial=3.5cmT=40dyne/cmWork done=36960ergPutting these values in formula we get,36960=40×8π(R2final-(3.5)2)⇒R2final=36.78-12.25⇒Rfinal=4.95cmRegards -10 View Full Answer