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Model air as an ideal gas with Cp=29.3 J/molK and calculate the pressure and temperature as a function of time. How long does it take until the tank is within 5K of the steady-state value?
A particle traveling in a circular path of radius 300 m has an instantaneous velocity of 30 m/s and its velocity is increasing at a constant rate of 4 m/s2. What is the magnitude of its total accele
If it then passes through the same location 5 seconds later with a velocity of 50 ft/s to the right, determine average velocity of the particle in the 5 second interval.
What are the scalars r and s if possible such that has zero x and y components and determine a dimensionless unit vector a+b+c.
Assume changes in kinetic and potential energies are negligible. Determine the necessary power in kW required to drive the compressor.
How much must must be deposit right now, at the end of year 0, to just deplete the account after the 5 withdraws if the interest is 5% compounded annually?
Determine the temperature and total enthalpy of the container. The container is now heated until the pressure is 600 kPa. Determine the temperature and total enthalpy when the heating is completed.
What is the change in specific internal energy of the CO2? what is the change in specific enthalpy? what is the change in enthalpy? Assume the CO2 is an ideal gas and that specific heats are constant
The standard-state thermodynamic data on this reaction are deltaHR,298 = -90.64 kJ/mole and deltaGR,298 = -24.2 kJ/mole. At what pressure will the equilibrium conversion be 50% at 350 C?
If the atmosphere is 20°C and the temperature of the second wall (T2) is 75°C, what is the temperature of the first wall (T1)?
The flood was carried out at 0.05 mL/min with brine viscosity of 0.443 cP. Determine the absolute permeability of this plug in millidarcies.
The room air temperature is 24 oC, the wall surface temperature is 18.5 oC, and the heat transfer coefficient is 0.662 W-m-2-K-1. What is the total rate of heat loss? (in W)
Assuming that the pump efficiency is 60percent, calculate the power drawn from the engine. The suction anddischarge lines are the same size.
Consider such a system whose generation efficiency is 0.238, conditioning efficiency is 95%. How much power is delivered to the conditioning equipment buss bar?
A 220 V electric motor produces 1.31 kW of power at 3600 RPM. What is the torque exerted by the load upon the motor shaft in N*m?
If Point (2, 3, 4) is rotated 45o CCW about the y-axis with respect to point. Find the final coordinates of the point using homogeneous transformations.
A 10-nominal schedule 40 galvanized iron pipe is 300ft long. It conveys carbon disulfide. The pressure drop in the pipe is 3psi. Calculate the volume flow rate of liquid.
Heptane flows through an 8-nominal schedule 120 pipe that is 1/2 mile long. The volume flow rate is 1ft^3/s. Calculate the pressure drop if the pipe is made of wrought iron.
When unloaded, its draft (how deep it is submerged in the water) is 2m and when loaded with grain the draft is 2.5m. Determine: (a) the unloaded weight of the barge and (b) the weight of grain.
A nylon thread is subjected to a 8.5 N tension force. Knowing that E = 3.3 GPa and that the length of the thread increases by 1.1%, determine the diameter of the thread and the stress in the thread
It is observed that the wire stretches 45 mm when a tensile fore P is applied. Knowing that E= 200 GPa determine the magnitude of force P and the corresponding normal stress in the wire.
If the final temperature of the mixture within the vessel is 27 degree C, determine the mass, in kg, of each component present.
The actual value of Keq at 350 C is 1.94*10^-4. How large is the error assuming constant deltaHR? d) At what pressure will the equilibrium conversion be 50% at 350 C?
The exit from PFR is fed to a CSTR of the same volume and carried out under identical conditions (ie temperature and pressure) in a CSTR of the same volume. What is the coversion exiting the CSTR?
Compare and contrast the heat capacity of common brick, plain carbon steel, engine oil, water, and soil. Which material provides the greatest amount of thermal energy storage per unit volume?