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The tank is connected by a valve to a supply line where air at 42C and 8 bar flows steadily. Determine temperature in the tank at the time the valve is closed, T2 (C).
Find the acceleration of 0 as a function of theta and the minimum coefficient of friction to prevent the cylinder from slipping?
The wheel of the slider-crank mechanism shown in the figure, is rotating counterclockwise at a constant rate of 10 rad/s. Determine the velocity of the slider VB when theta = 60 degrees.
The projectile comes to rest in 0.01s penetrating an 8ft thick wall to a distance of 6ft. The average force on the wall from the bullet is?
Steam enters an adiabatic turbine at 5 MPa and 450°C and leaves at a pressure of 1.4 MPa. Determine the work output of the turbine per unit mass of steam if the process is reversible.
The superheated water vapor at 50 kPa and 100°C is compressed isentropically in a closed system to 4 MPa. Determine the final temperature of the water and the specific work required, win , in k
A 100-kg copper block initially at 110°C is dropped into an insulated tank that contains 150 kg of water at 15°C. After some time, the system reaches an equilibrium temperature of 20 °C
An ideal gas undergoes a process between two specified temperatures, first at constant pressure and then at constant volume.
At what temperature should the diffusion couple be heated to and held for 20 days to produce a concentration of 2.8 wt% Ni at a depth of 2.2 mm within the Cu.
What would be the Nitrogen concentration 3 mm from the surface after 7.5 hours? D for Nitrogen in Iron at this temperature is known to 2.84*10-11 m2/s.
A gate is 0.5 m wide and 0.6 m tall and is hinged at the bottom. On one side the gate holds back a 0.5 m deep body of water. What jet speed V is required to hold the gate vertical?
How long does this coal reserve of US will last if all coal is used to generate electricity? Assume the efficiency of converting coal to electricity is 35%.
The first three excited states of the nucleus of 199Hg are at 0. 1 5 8 MeV, 0.208 MeV, and 0.403 Me V above the ground state.
The scoop of ice cream sits on the cone's interior radius and extends into the cone some distance. Find the z centroid for the cone (the scoop of ice cream and the cone).
A steel (E = 200 GPa, yield strength = 250 MPa) with cross-sectional thickness 100 mm and height 200 mm is subjected to a bending moment.
A steel (E = 200 GPa, yield strength = 250 MPa) circular rod 1 m long with a diameter of 0.25 m is put in tension. What is the maximum tensile force that can be applied before the rod becomes perman
What is the Human Development Index? Suppose the world population in year 2100 will be 9 billion people. Assume the amount of energy needed to provide each person an acceptable quality of life is 10
Find the ideal Otto cycle efficiency and compare with the values of efficiency calculated from mpg rating. Comment on the results.
The angle through which the wires supporting the block rotate as a result of the impact is measured and determined to be 7 degrees. What is the bullet's velocity?
The water level in the basement is now sinking about 0.4 mm/min. What is the flow rate (L/s) from the storm into the basement? The basement is 7.6 by 6 m.
Which cup will be the most stable on an unstable surface such as a pillow, a bed, or a couch? Cup with tissue paperWhich cup will most easily hold the load of a book or a folder?
At the instant when the water depth is 0.6 m, the flow rate from the tank is observed to be 4 kg/s. Determine the rate of change of water level at this instant.
A hydraulic dredge is used to dredge sand from a river bottom. Estimate the thrust necessary to keep the boat stationary. Assume the specific gravity of the sand/water mixture is SG=1.2.
Determine the heat supplied to the air in the heat exchanger Q. H, in kW. Assuming the air in the heat exchanger acts as a heat sink having an average temperature of 25°C, determine the minimum