Physics · Surface Tension
A soap bubble of radius R is blown from a solution at room temperature. After heating the solution (which slightly decreases its surface tension), a second bubble of radius 2R is blown. The work required to blow the second bubble in comparison to the first is:
- 1exactly double.
- 2slightly less than 4 times.✓
- 3exactly 4 times.
- 4slightly more than 4 times.
Correct answer
slightly less than 4 times.
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