A soap film is formed on a rectangular frame of length 0-03 m dipped in a soap solution- The frame hangs from the arm of a balance- An extra mass of 2-20- 10-4 must be placed in the other pan to balance the pull- Calculate the surface tension of the soap solution-

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Surface Tension

A soap film i...

Question

A soap film is formed on a rectangular frame of length 0.03 m dipped in a soap solution. The frame hangs from the arm of a balance. An extra mass of $2.20 \times 10^{- 4}$ must be placed in the other pan to balance the pull. Calculate the surface tension of the soap solution.

0.45

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0.036

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0.07

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