Two identical air bubbles are rising in water. If they were to coalesce to form a single air bubble, the combined air bubble would have

Engineering

Physics

Liquid Pressure

Surface Tension and Surface Energy

Viscosity and Terminal Velocity New

Question

Two identical air bubbles are rising in water. If they were to coalesce to form a single air bubble, the combined air bubble would have

Higher excess pressure and higher terminal speed

Lower excess pressure but higher terminal speed

Lower excess pressure and smaller terminal speed

Higher excess pressure but smaller terminal speed

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$r ↑\Rightarrow Dp = \frac{25}{r} ↓$

$v_{T} = \frac{2}{9} r^{2} g \frac{(p - σ)}{η} v_{T} ↑$