Assuming a vertical surface tension force

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1. Mercury makes an angle of 130- with respect to the vertical when in contact with clean glass. How far will mercury depress in a clean, 10-mm-diameter glass tube if sHg ¼ 0.467 N=m.

2. A steel needle of length and radius will ?oat in water if carefully placed. Write an equation that relates the various variables for a ?oating needle assuming a vertical surface tension force.

Reference no: EM13886868

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