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Air forms a boundary layer near a solid wall, in which the velocity profile is sinusoidal. The boundary-layer thickness is 7mm and the peak velocity is 9m/s. compute the shear stress in the boundary layer at y=0 and y=7mm
two kilograms of air within a piston-cylinder assembly executes a carnot power cycle with maximum and minimum
An old gas turbine has an efficiency of 21 percent and develops a power output of 6000 kW. Determine the fuel consumption rate of this gas turbine, in L/min, if the fuel has a heating value of 42,000 kJ/kg and a density of 0.8 g/cm3.
suppose air as an ideal gas satisfying the thermodynamic version of bernouillis equation flows down a pipe of radius r.
the probability of a memory chip from a production line being defective is 0.04. find the probability that in a sample
a partitioned tank contains water and mercury. what is the gauge pressure in the air trapped in the left chamber? what
A vertical plate of length L = 2m (in the vertical direction), width w = 1m (in the horizontal direction) and temperature T = 300K is in free convection with air at T\infty = 320K. Find the total heat transfer from both sides of the plate
a 9-cm-diameter spherical ball whose surface is maintained at a temperature of 110oc is suspended in the middle of the
you are designing a remote-area power supply based on a miniature wind turbine that is 20 efficient. meteorological
What is the amount of work required to stretch a linear spring from its rest position by an amount of 0.20m if it has a spring constant of 45 kN/m. A water pump increases the water pressure from 15 psia to 55 psia. Determine the power input required,..
steam enters a turbine operating at steady state with a mass flow 10 kgmin a specific enthalpy 3100 kjkg and a velocity
1. consider the element platinum which has an atomic radius of 0.139 nm and a room temperature density of 21.45 gcm3.a.
you are swinging your younger sister in a circle of radius .9m. if her mass is 24kg and you arrange it so she makes one
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