A grease nipple on a car has a hole 0 50 mm in diameter and 5 0 mm long If the viscosity 32 of the grease used is 80 N s m, what is the pressure needed to force 1 0 cm of grease into the nipple in 10 s How many times atmospheric pressure is this ...

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A grease nipple on a car has a hole 0.50 mm in diameter and 5.0 mm long.

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A grease nipple on a car has a hole 0.50 mm in diameter and 5.0 mm long. If the viscosity 32. of the grease used is 80 N· s/m², what is the pressure needed to force 1.0 cm³ of grease into the nipple in 10 s? How many times atmospheric pressure is this?