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Find the work done in blowing a soap bubble of surface tension 0.06 N/m from 2cm

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in Physics by (54.7k points)

Find the work done in blowing a soap bubble of surface tension 0.06 N/m from 2cm radius to 5cm radius?  

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1 Answer

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Best answer

Here, Surface tension = s = 0.06N/m 

ri = 2cm = 0.02m

r2 = 5cm = 0.05m

Since bubble has two surface, initial surface area of the bubble = 2x4π r12 

= 2x4π(0.02)2 

= 32πx10-4m2  

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