What would the perimeter of each foot have to be to enable a standard man (70 kg) to stand on the water on both feet, held up by surface tension? (Note: Surface tension for water ó = 0.073 N/m.) A)9.3 × 10³ m B)4.7 × 10³ m C)9.6 × 10² m D)4.8 × 10² m

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The force due to surface tension is given by F = 2 * perimeter * surface tension. To support the man's weight (mg), set F = mg. Solving for the perimeter gives perimeter = mg / (2 * surface tension). Substituting the given values, perimeter = (70 * 9.8) / (2 * 0.073) = 4.7 × 10^3 m.

What Would the Perimeter of Each Foot Have to Be