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A close coiled helical spring of round steel wire 10 mm diameter having 10 complete turns with a mean radius of 60 mm is subjected to an axial load of 200 N. Determine the deflection of the spring. C = 80 kN/mm2.
a closed system consisting of 0.13 lbmol of air undergoes a polytropic process from a pressure of 14 psia and specific
What are the recursive equations for each model and what is their fixed point? Compare the adjustment of prices in each model.
A blind cylindrical hole of 2cm diameter and 3 cm in length is drilled into a metal slab having emissivity 0.7. if the metal slab is maintained at 650 k , make calculations for the radiation heat escape from the hole.
For the condition when the floor and duct temperatures are 30 and 80°C, respectively, and the thermal conductivity of concrete is 1.4 W/m · K, calculate the heat rate from each duct, per unit length of duct. Use a grid spacing with ?x = 2?y, where..
Air passes through a gas turbine system at a rate of 4.5kg/s. It enters with a velocity of 150m/s and a specific enthalpy of 3000kJ/kg. At exit, the velocity is 120m/s and the specific enthalpy is 2300kJ/kg. The air has a heat loss to the surrounding..
The system is at rest in the position shown, with the 12-lb collar A resting on the spring (k = 20 lb/ft), when a constant 30-lb force is applied to the cable. What is the velocity of the collar when it has risen 1 ft? The collar is attached to th..
Physicists have determined the theoretical value of the thermal conductivity of a carbon nanotube to be kcn,T = 5000 W/m · K. (a) Assuming the actual thermal conductivity of the carbon nanotube is the same as its theoretical value, find the thermal..
A lathe can be modelled as an electric motor mounted on a steel table. The table plus the motor has a mass of 50 kg. The rotating parts of the lathe have a mass of 5 kg at a distance 0.1 m from its center. The damping ratio is 0.06 and the natural fr..
10 mol of an ideal gas at 5 atm at 298 k is stored in an insulated piston and cylinder arrangement. at these condition
electrically heated draw batch furnaces are commonly used in the heat treatment industry. consider a draw batch furnace
at the beginning of the compression stroke the volume of a certain diesel engine cylin-der is 1.000 liter and it is
a rigid closed tank of volume 3 m3 contains 5 kg of wet steam at a pressure of 200 kpa. the tank is heated until the
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