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Engineering, 30.01.2022 18:40 Admin

Imagine a graduated cylinder full of water in the lab on a bench that has just been waxed. The cylinder is 1 cm2 in the inner cross sectional area, and the water is 10 cm high. The temperature is at room temperature (25 °C) and remains constant. Water-air interface energy (i. e., water surface tension) is approximately 0.072 N/m at 25 °C. All the water spills and forms a puddle that can be approximated as a thin disk. If this disk’s diameter is 14 cm, calculate the work required to create just the air-water interface.

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