Ascale model of 1: 25 of a ship has a submerged area of 6 m2 a length of 5 m in which a drag force (ed) of 25 n is measured when an experiment is carried out in water with a speed of 1.2 m/s. calculate the total drag force in the prototype. remember that the total drag force is due to the friction forces plus the pressure forces. the friction force can be estimated by the following relationship where coefficient cf= 0.0735 /. assume that the dynamic viscosity is 0.001 pa-s and density of 1030 kg / both for the model and the prototype.

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options