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Air ( ρ=1.23kg/m3, µ=1.79x10-5 N-s/m2) flows in 0.2m long pipe of D= 0.005m, V=40m/s. Given the roughness of the pipe is ε=0.0015mm. The friction factor (f) is given by: 1/sqrt(f)+2log10[(E/3.5D)+2.5/(re)sqrt(f)=0 re=ρVD/µ ρ=density of fluid µ=viscosity of fluid
an insulated vertical piston-cylinder device initially contains 10kg of water 6kg of which is in the vapor phase. the
the potential energy term which describes the bonding between dissimilar ions in an ionic solid may be given as
the uniform disk of mass m and radius r rotates about the pin at c located a distance d from its center. determine d so
A 90-N force is applied to the control rod AB as shown. Knowing that the length of the rod is 225 mm, determine the moment of the force about point B by resolving the force into horizontal and vertical components.
a rigid tank is divided into two equal parts by a partition. one part of the tank contains 3.1 kg of compressed liquid
during a constant-pressure process it is found that the change in entropy is equal to 0.25cp. if the cp is constant and
To determine the heat transfer characteristics of a cylinder under cross flow conditions when the cylinder is isolated.
the steel bar has the orginal dimensions shown in the third figure below. if it is subjected to an axial load of 50kn
carbon dioxide is compressed in an isentropic process from 103 kpa and 22 degrees celcius to 525 kpa using a
a rankine cycle is used to generate electricity with a total plant capacity of 65 mw. heat from the condenser is
determine the radius r of an impurity atom that will fit into a tetrahedral site of bcc ironr1.241 angstroms crystal
a tank having a volume of 0.05m3 contains 80 saturated vapor and 20 saturated liquid water by volume at a temperature
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