Question

Calculate the work done in blowing a soap bubble of radius 2cm to 3cm. give/cm surface tension 30 dyne

Answer 1

this may helllllllpppppp

Answer 2

Answer:

Step-by-step explanation:

We know that a bubble has two surfaces in contact with air, so the total surface area of the bubble will be

=2×(4πR²)=8πR²

Now, work done=Surface tension × Increase in surface area=

2.5x10^-2 ×(8πR²−0)= 5.652x10^-2J

OR 0.056J