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A rectangular casting having the dimensions 3 inch by 5 inch by 0inch solidifies completely in 11.5min. Using n=2 in 2 in Chvorinov's rule, calculate the mold constant B. Then compute the solidification time of a 0.5inch by 8inch by 8 inch casting poured under the same conditions?
Natural gas having a molar analysis of 60% methane (CH4) and 40% ethane (C2H6) enters a compressor at 340K, 6 bar and is compressed isothermally without internal irreversibilities to 20 bar. The compressor operates at steady state, the kinetic and po..
a child of mass 20 kg is standing on a plank inclined at 20 degrees to the horizontal. how much force does the child
Refrigerant 134a at 700 kPa and 40oC is expanded adiabatically in a closed system to 60 kPa. Determine the work produced, in kJ/kg, and final enthalpy for an isentropic expansion efficiency of 80.
for a product at an aql of 2.5 and lot size of 5000 using mil standard 105e what is the probability of going to
the steam turbine power plant uses water as the working fluid and will be modeled as a simple ideal rankine cycle. the
given 55 galloin water heater height 61 in. dia 21.5 in. surrounding insulation k0.03 btuft-hr deg. f tank is in
A 2 cm horizontal jet of water with a velocity of 15 m/s is spraying onto a vertical plate attached to a cart moving opposite the direction of the water jet at 8 m/s. Determine the force required to keep the cart moving at a constant velocity.
at 60oc the surface of water is .0662nm and that of mercury yis .47nm. determine the capillary height changes in these
Air at 20°C flows at 1 m/s between two parallel flat plates spaced 5 cm apart. Estimate the distance from the entrance where the hydrodynamic boundary layers meet.
a fluid has a viscosity of x nsm2 and is placed in a concentric cylinder viscometer. the gap width is g mm and the
Calculate spring stiffness for which the oscillator becomes unstable (gravity in the negative y direction) verify with SW Simulation (study 1)
six kilograms of carbon dioxide in a piston-cylinder device execute a carnot cycle consisting of the following four
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