Solution Found!
A soap bubble has a surface tension of s = 3 × 10?4 N/cm
Chapter 3, Problem 208HP(choose chapter or problem)
Problem 208HP
A soap bubble has a surface tension of s = 3 × 10−4 N/cm as it sits flat on a rigid ring of diameter 5 cm. You now blow on the film to create a half-sphere surface of diameter 5 cm. How much work was done?
Questions & Answers
QUESTION:
Problem 208HP
A soap bubble has a surface tension of s = 3 × 10−4 N/cm as it sits flat on a rigid ring of diameter 5 cm. You now blow on the film to create a half-sphere surface of diameter 5 cm. How much work was done?
ANSWER:
Solution 208 HP
Step 1 of 2
We have to find the work done in blowing on the film to create a half-sphere surface of diameter 5 cm.
The work done in blowing on the film to create a half-sphere can be found from the expression.
Where,
N/cm
change in the area of the
soap bubble in m
The expression has in it because the soap bubble has two surfaces.