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Question: An air stream enters a 2.5-cm-diameter pipe with Mach 2.5 and a pressure and temperature of 30 kPa and -15°C, respectively. The average friction factor can be assumed to be 0.005. Determine the maximum possible length of tube if there are to be no shock waves in the flow. Also, find the values of the pressure and the temperature at the tube exit for this maximum length. Assume the flow to be adiabatic.
Design a displacement function to drive the piston to follow as close as possible the aortic pressure curve. Make sure that the jerk is finite along the whole rotation of the cam.
the combined mass of the motorcycle and rider is 160 kg. the motorcycle starts from rest at t 0 and moves along a
a car is to be hoisted by elevator to the fourth floor of a parking garage which is 48 ft above the ground. if the
An automobile storage battery with an open circuit voltage of 12.8 V is rated at 260 A/h. If the internal resistance of the battery is 0.2 ?, estimate the maximum duration of current flow and its value through an external resistance of 1.8 ?.
Design for load transfer from a 14-in.-square tied column to a 13-ft-0-in.-square reinforced concrete footing. Use Pu = 650 kips, footing f′ c = 3000 psi, column f′ c = 5000 psi, and fy = 60,000 psi (all steel).
A fuel gas containing methane and ethane is burned with air in furnace, producing a stack gas at 300C and 105kPa (absolute). The stack gas contains C02 at a partial pressure of 80 mm Hg and no CO,O2, methane or ethane. Calculate the mole fraction of ..
A specimen of a methacrylate plastic is tested in tension at room temperature, producing the stress-strain data listed in the table. Plot the stress-strain diagram and determine the proportionallimit, modulus of eIasticity, and the yieId stress at..
If the box weighs 200 lbs, what force must be in each cord for the system to be in equilibrium? Cable AB is 1.5m and the vertical distance from B to A (marked as "y") is 0.75m
Determine the torque needed to hold the manifold stationary. What would the angular velocity of the manifold be if the resisting torque is negligible?
air is expanded from 2000 kpa and 500c to 100kpa and 50c. assuming constant specific heats determine the change in
Water vapor enters a valve with a mass flow rate of 1 kg/s at a temperature of 260 degrees C and a pressure of 3.5 MPa, and undergoes a throttling process to 2.75 MPa (T0=25, P0=100kPa).
in a single-flash geothermal power plant geothermal water enters the flash chamber a throttling valve at 230 dgrees c
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