For any given velocity of flow, the friction factor "f" O will decrease as the diameter of the pipe increases O will increase as the length of pipe increases O will decrease as the diameter of pipe decreases O will decrease as the relative roughness of the material in the pipe wall will increase Which of the following statements is incorrect? Reynolds number is the ration of the viscous force to the inertial force Bernoullis equation holds on the same streamline O For fluid at rest, the pressure is equal in any direction O Steady flow do not change with time at any point

A solid plastic rod has a diameter of d = 18 mm and a length of L = 700 mm. An axial load of P = 33 kN is applied to the rod as shown. The elastic modulus is E = 2.0 GPa and Poisson's ratio for this material is v= 0.41. Determine the magnitude of the change in the rod diameter Ad for the given load. Answer: Ad = i mm

Two solid cylindrical rods 1 and 2 are joined together at metal plate B loaded. If the normal stress in each rod is limited to 40 ksi, determine the minimum diameter for each rod (in inches). Note: Draw the Free Body Diagram, include the units/dimensions, use the proper formula and round-off all the answers and final answers to 3 decimal places.

I was wondering in the hydrodynamics how i can determine Cp in the pressure ressistance (coefficient pressure). so the total ressistance will be Rt= Rf+Rp. Given in Coefficients it will be: Ct=Cf+Cp now they say Cp in % of the friction coefficient (Cf). Ct=(1+k)*Cf with 1+k the formfactor. so the total ressistance will be Ct=Cd*1/2*ρ *v^2*S (wetted area m^2, v= velocity in m/s and ρ= 1025 kg/m3 for salt water) kan you explain me how to calculate the Cd in the total resisstance?