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`eta_c = eta * "Conversion Factor"`

Enter a value for all fields

This **Fluid Resistance Conversion** function converts an input measure of fluid resistance (pressure/volume) into other units of fluid resistance such as pascal seconds per liter and millimeter seconds per liter.

**INSTRUCTIONS:** Choose units and enter the following:

- (
**η**) Input Fluid Resistance

**Fluid Resistance (η _{c}):** The calculator returns the fluid resistance in the following units:

- (Pa ⋅ s) /L - (Pascal second per Liter)
- (Pa ⋅ min) /L - (Pascal minute per Liter)
- (Pa ⋅ s) /mL - (Pascal second per milliliter)
- (Pa ⋅ min) /L - (Pascal minute per milliliter)
- (Pa ⋅ s) /m³ - (Pascal second per cubic meter)
- (Pa ⋅ min) /m³ - (Pascal minute per cubic meter)
- (Pa ⋅ s) /cm³ - (Pascal second per cubic centimeter)
- (Pa ⋅ min) /cm³ - (Pascal minute per cubic centimeter)
- (mmHg ⋅ s) /L - (millimeter Mercury second per Liter)
- (mmHg ⋅ min) /L - (millimeter Mercury minute per Liter)
- (mmHg ⋅ s) /mL - (millimeter Mercury second per milliliter)
- (mmHg ⋅ min) /L - (millimeter Mercury minute per milliliter)
- (mmHg ⋅ s) /cm³ - (millimeter Mercury second per cubic centimeter )
- (mmHg ⋅ min) /cm³ - (millimeter Mercury minute per cubic centimeter )
- (mmHg ⋅ s) /m³ - (millimeter Mercury second per cubic meter )
- (mmHg ⋅ min) /m³ - (millimeter Mercury minute per cubic meter )

The pressure units are typically in pascals (Pa) or millimeters of mercury (mmHg), and the volume units range from cubic millimeter up to cubic meter.

**Fluid Resistance** is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. Fluid Resistance is sometimes referred to as drag (or air resistance when the fluid is air) or fluid friction. The effects of fluid resistance may be exhibited between fluid layers or fluid surfaces or between a fluid and a solid surface.

Fluid resistance depends on velocity. Drag force is proportional to the velocity for a laminar flow and the squared velocity for a turbulent flow and the cause of fluid resistance is viscous friction.

Fluid Resistance decreases fluid velocity relative to a solid object with which the fluid interacts some.

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