A solid cylinder of weight 9 kg slides in a vertical lubricated pipe. The clearance between the cylinder and the pipe is 0.0025 cm. If the cylinder is observed to decelerate by a rate of 0.6m/s when the velocity of 6 m/s. What is the viscosity of the lubricate oil if the diameter of the cylinder is 15 cm with length of 13 cm?

For a parallel plate arrangement, it is found that when the distance between the plates is 2 mm, a shearing stress of 492 Pa develops at the upper plate when it is pulled at a velocity of 1 m/s. Determine the (dynamic) viscosity of the fluid between the plates, p (in N-s/m2).

For a parallel plate arrangement, it is found that when the distance between the plates is 5 4 mm, a shearing stress of 781 300 Pa develops at the upper plate when it is pulled at a velocity of 1 1 m/s. What is u (the dynamic) viscosity (in N-s/m2) of the fluid between the plates?

17.17. The fins on the radiator of your car are about 2 in long. When your car is going 60 mi/h, the free-stream velocity of the air approaching these fins (under the hood of the car and behind the grille) is estimated to be 40 mi/h. Estimate the boundary layer thickness at the downstream end of the fins.

3. A fine (thin) ring with a radius 50 mm is being pulled from the surface of water. If the ring has a mass of 1.0 g and the contact angle is 75, determine the force, P, needed to pull the ring free from the surface. 50 mm 75°

Please show your solution and write clearly.

Problem 5: Questions Determine the capacitance in uF of a parallel plate capacitor having a plate area of 0.03 m and a plate separation of 0.2 um. The dielectric has a dielectric constant of 7. If the Capacitance is C-25mF, what is the distance between the two plates? Use same other values. Determine the inductance of a coil with 400 turns on a core that is 2 cm long and hasa diameter of 1 cm. The permeability (not the relative one) is 0.25 mH/m.

The laminar flow of water in a small pipe is given by where R = 0.5 cm is the pipe radius, and Umax = 20 cm/s. Assume the temperature is 15°C. (a) Find the wall shear stress. (b) Find the pressure drop in a 10 cm length of the pipe. (c) Verify that the flow is indeed laminar.  

Q4- Water flows at a velocity of 1 m/s over a plane surface 0.6 m wide and 1 m long. Calculate the total drag force acting on the surface if the transition from streamline to turbulent flow in the boundary layer occurs when the Reynolds group Re, = 105 and Taking == 1 mN s/m² = 10-³ Ns/m².

As shown in the accompanying figure, a thin flat plate rests on top of a film of ambient temperature (i.e. 20 °C) water. When a small force F is applied to this plate, the velocity profile within the water film can be described as vx = 40y-800y² where y is the distance (m) from the bottom stationary plate. a. Show that velocity equation satisfies the 'no-slip' conditions that must exist for both the top moving plate and bottom stationary plate. b. Calculate the magnitude of the shear stress (in Pa) that is acting on the top plate 10 mm 0.32 m/s -X