A soap bubble is slowly expanded from radius R to radius 2R while the surface tension S remains constant. Neglect any change in the surrounding pressure. What is the increase in surface energy of the soap bubble?

Physics · Properties of solid and fluid · properties of fluid and surface tension

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A soap bubble is slowly expanded from radius R to radius 2R while the surface tension S remains constant. Neglect any change in the surrounding pressure. What is the increase in surface energy of the soap bubble?

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