Question: 2.5 A syringe needle (circular in section) with a sharp tip of radius r is used to form air bubbles beneath the surface of a

2.5 A syringe needle (circular in section) with a sharp tip

of radius r is used to form air bubbles beneath the surface

2.5 A syringe needle (circular in section) with a sharp tip of radius r is used to form air bubbles beneath the surface of a solution of surface tension y. Derive an expression for the maximum pressure, p, observed during the slow formation of an air bubble at the tip of the needle. Assume that the bubble is a partial sphere. a Show by a qualitative argument that the formula does indeed correspond to the maximum pressure

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