Question

dially uses of excess pressure in drops or bubbles

Answer 1

Answer:

According to the surface tension, the smaller bubble have the excess pressure and the difference of pressure for the bubble is inversely proportional to the radius.So as the radius decreases pressure increases.

Explanation:

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Answer 2

Answer:

According to the surface tension, the smaller bubble have the excess pressure and the difference of pressure for the bubble is inversely proportional to the radius.So as the radius decreases pressure increases.

Excess of pressure inside air bubble in a liquid.

Consider an air bubble of radius R inside a liquid having surface tension T as shown in Figure 7.28 (a). Let P1 and P2 be the pressures outside and inside the air bubble, respectively. Now, the excess pressure inside the air bubble is ΔP = P1 − P2.

Let the external pressure be Po and the internal pressure P1. Both these formulae show that the excess pressure within a small bubble is greater than that within a larger bubble. Calculate the excess pressure within a bubble of air of radius 0.1 mm in water. Excess pressure = 2T/r = [2x72.