Question

Work done in blowing a soap bubble of radius r is w. What is the work done in increasing its radius to 2r

Answer 1

i don't know please give me 5points

Answer 2

HLO MATE HERE U GO

Workdone to form a bubble W = 8 pi R^2S

Energy required to increased its radius to 2 R = 8 pi S (r2^2 -r1^2)

= 8pi s ((2R)^2 -R^2)

= 3(8pi R^2S) = 3W.