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Q7. Given the bulk modulus of sea water is 2.2*10^9 Pa and the density of surface sea water is 1.025*10^3 kg/m^3. Calculate the volume of 1.025*10^3 kg of sea water at a depth near 5 km where the pressure is 5.0*10^7 Pa. Q8. A block weighting 100N and having dimensions 200 mm on an edge is allowed to slide down an incline on a film of oil having a thickness of 0.05 mm. If a linear velocity profile in the oil is assumed, what is the terminal speed of the block? The viscosity of the oil is 7*10^-2 Ns/m^2. Q9. A hydraulic circular rod having a 100 mm diameter and 2m long is pulled by a force of 200N. It moves with a constant velocity within a circular hollow tube of 101mm internal diameter. The clearance of 0.5mm between the rod and the tube is filled with oil of specific gravity 0.8 and kinematic viscosity 400 mm^2/s. Determine the velocity of the rod in units of m/s.
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