Motor oil, with a viscosity of 0.25 n ∙ s/m2, is flowing through a tube that has a radius of 3.0 mm and is 1.0 m long. the drop in pressure over the length of the tube is 200 kpa. what is the average speed of the oil

The average speed of the oil is 1 m/s.

Explanation:

Given that,

Viscosity

Radius r = 3.0 mm

Length = 1.0 m

Pressure = 200 kPa

We need to calculate the average speed of the oil

Using formula of pressure

Where, A = area

= density of oil

= viscosity

Put the value into the formula

Hence, The average speed of the oil is 1 m/s.

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