Physics

Physics

Problem

The excess pressure ΔP\Delta P inside a soap bubble is assumed to depend only on its surface tension SS and radius rr. Select the option that gives a dimensionally valid proportionality. a) ΔP∝S r\Delta P \propto S\, r b) ΔP∝S r−1\Delta P \propto S\, r^{-1} c) ΔP∝S2 r−1\Delta P \propto S^{2}\, r^{-1} d) ΔP∝S−1 r\Delta P \propto S^{-1}\, r

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