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12.A square plate of 10 cm side moves parallel to anotherAns, 1.5 × 10 . N.plate with a relative velocity of 10 cm s1, both platesimmersed in water. If the viscous force is 2 × 10calculate the perpendicular distance betweenplates.1-3 N,Ans. 0.05 cm.3. Water is flowing through a horizontal tube 4 km inlength and 4 cm in radius at a rate of 20 litre sCalculate the pressure required to maintain the flovwin terms of the height of mercury column. Ans. 60 cm. |
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