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The following equation is the rate water level ( y in feet) changes with time ( t in minuts) in a vertical cylindrical tank when a valve at the bottom of the tank is open. Assuming k = 0.1 and an initial water level of 9ft, determine the value of y when t = 2 minute using Euler Method. Determine the analytical expression for y and compare its value with the numerical solution at t = 2 minute. Use a time step of 0.5 minute.
steam at 10 psia with a quality of 0.90 enters an adiabatic steady-flow compressor at a rate of 50 lbms. the steam
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two kg of saturated liquid water at 1 bar is compressed to 25 bar and 100degc in a water pump. determine the change in
The hydrogen spectrum has a red line at 656 nm and a blue line at 434 nm. What is the first order angular separations between these two spectral lines obtained with a diffraction grating that has 4500 lines per centimeter?
the motion of a particle is defined by the position vector r=a(cos t + t sin t)i + A(sin t-t cos t)j, where t is expressed in seconds. Determine the values of t for which the position vector and acceleration are.
nitrogen r0.2968 kjkg-k cv 0.745 kjkg-k at 100 kpa is contained in an insulated piston cylinder device as shown in the
If the filling is done rapidly, calculate the final temperature in the small cylinder, (a) assume that oxygen is an ideal gas with Cv= 5R/2 and (b) using accurate thermodynamic data for oxygen.
an oxygen enrichment device is needed for people with impaired respiratory systems. to design such a device it is
a well-insulated vertical piston-cylinder device contains air. the diameter of the piston is 8 inches. atmospheric
would a flagpole made of steel or aluminum freeze ones tongue to it faster? why? thermal conductivity 2. the outer
driving a 2000-ft loaded horizontal conveyor at 4 fts requires 35hp. what horsepower would be required if the conveyor
consider two very large parallel plates. the bottom plate is warmer than the top plate which is held at a constant
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