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1. A 5-kg aluminum radiator holds 2 kg of liquid R-134a at -10?C. The setup is brought indoors and heated with 220 kJ. Find the final temperature and the change in entropy of the mass.
2. A 12-kg steel container has 0.2 kg superheated water vapor at 1000 kPa, both at 200?C. The total mass is now cooled to the ambient temperature, 30?C. How much heat transfer was taken out and what is the steel-water entropy change?
A light spring of a constant k=90.0 N/m is attached vertically to atable. A 2.00g balloon is filled with helium (density 0.180 kg/m^3)to a volume of 5.00m^3 and is then connected to the spring, causingit to stretch. Determine the extension distance L..
what is the magnitude and direction of the force of the water n the nozzle, if the nozzle is held steady/2- what is the FORCE if the fire fighter is running towards the fire, with the hose at a velocity of 1.5 m/s
a railroad car that weighs 20000lb is traveling eastward with a velocity whose magnitude is 5 fps. a second car on the
An element of material subjected to a plane strain has a strain epsilon x of 280x10^-6, a strain epsilon y of 420x10^-6 and an engineering shear strain gamma xy of 150x10^-6.
A conical tube of length 8 m fixed vertically with its smaller end upwards. The velocity head and pressure head at upper ends are 1.27 m and 2.50 m respectively. The velocity head and pressure head at lower ends are 0.203 m and 5.407 m respectivel..
Measurements indicate that to cause this flow the force acting on the contents of the control volume is 40i lb. Determine the net rate of flow of linear momentum through the control surface.
Consider a diver weighing 200 lb at the end of a diving board that cantilevers out over 3 ft. The diver oscillates at a frequency of 2 Hz. What is the flexural rigidity EI of the diving board
Assuming that the friction force between end A and the surface is large enough to prevent sliding, determine immediately after release (a) the angular acceleration of the rod, (b) the normal reaction at A, (c) the friction force at A
A bowling ball is cast on the "alley" with a backspin of = 12 while its center has a forward velocity of = 7 Radius= 120 mm Determine the velocity of the contact point in contact with the alley.
Design a car parking for MEC College office of dean and deputy dean by using yield line theory. This is supported as shown in figure below consider the probable yield line pattern and find the yield line moment m Kn-m.
A well with a radius of 0.5 m pumps at a constant rate of 1240 m3/day. After the cone of depression has achieved equilibrium, the piezometric heads at two observation wells 40 and 95 m from the pumping well are measured as 78.9 and 83.4 above sea ..
One can lease a car for $550 per month with no down payment or purchase one for $20,000 now. If the nominal interest rate is 8% per year, how many months of use necessary for the two to break even
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