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capillary number(Ca)=(viscosity*velocity)/surface tension

viscosity have the unit (kg/(meter*time))

same for velocity(meter/time)

and surface tension ((kg*meter)/(time2*meter))

so= (kg *meter*time*time*meter)/(meter*time*time*kg*meter)

= unitless

dimension={M0 L0 T0}

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Q: What are the units of a capillary number?
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