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Question: pure water has a surface tension of 00728 soap water...

Question details

Pure water has a surface tension of 0.0728𝑁/𝑚. Soap water has a surface tension of 0.025𝑁/𝑚. A soap boat was made with a mass of 0.5𝑔 and a square surface area of 2𝑐𝑚 × 2𝑐𝑚. Show that the soap boat can stay afloat on both pure water and soap water solely with the force of surface tension. Calculate the acceleration of the boat on pure water when a drop of soap is added to the rear edge of the boat.

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