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Determine the maximum allowable temperature that will produce a flux of less than 2000 Hydrogen atoms/(cm2·s) through a BCC iron foil when the concentration gradient is -5 ×10^16 atoms/
A rigid 0.75 m3 tank initially contains water at 250oC, 50% liquid and 50% vapor, by volume. A valve on the bottom of the tank is opened, and liquid is withdrawn slowly.
If the flux of nitrogen through the foil is 1012 atoms/(cm2·s), what is the nitrogen concentration in the low concentration region?
Find the magnitdue of the acceleration when it reaches point A (half way down the slope) where the speed is Va = 10m/s, height is 36m, distance of 60m from end of slope, and rate increaseing at Va =
At a given instant train E has a speed of 20m/s and an acceleration of 14m/s^2 acting in the direction shown (75 degrees to the left of the track).
Determine the cycle efficiency of steam power plant working under the following data: Boiler pressure: 80 bar; condenser pressure: 0.1 bar, turbine inlet temperature: 5000C.
Air at 3x10-4 kg/s and 27o C enters a rectangular duct that is 1 m long and 4 mm by 16 mm on a side. A uniform heat flux of 600 W/m2 is imposed on the duct surface. What is the temperature of the ai
If a coal-burning electrical generating plant burns 2 tons of coal to generate 6000 kWh of electricity, calculate the efficiency of the plant as the ratio of electricity output to fuel energy input
The end of a robtoic arm extends along the path of the limacon r = (1+.5 cos [theta])m. at the instant that [theta] = pi/4, the arm has angular rotation [theta]' = .6 rad/s, which is increasing at [
If a strain of -0.087 is measured by a strain gage, what stress must the Aluminum be experiencing? If the bar is pourus nd you have a strain of 0.04 at a stress of 60,000psi , what is the effective mo
Refrigerant 134a enters a compressor with a mass flow rate of 5 kg/s and negligible velocity. The refrigerant enters the compressor as a saturated vapor at 10 deg C and leaves the compressor at 1400
Crate slides down the section of the spiral ramp such that r = (.5z)ft and z = (100 - .1t^2)ft, where t is in seconds. If the rate of rotation about the z axis is [theta]' = .04(pi)(t) rad/s, determ
Air at 14.7 psia and 60 °F enters a heavy duty compressor with negligibly small inlet speed. The air is discharge at a rate of 20 lbm/sec at 90 psia, and with a speed of 500 ft/s.
Find the flowrate in million standard cubic feet per day using the Panhandle B equation assuming the Natural Gas has a Sg of 0.693 and the system has an efficiency factor of 0.92.
Ball A is released from rest at a height of 40ft at the same time that a second ball B is thrown upward 5ft from the ground. If the balls pass one another at a height of 20ft, determine the speed at
The allowable shearing stress is 15ksi in a steel rod AB and 8ksi in a brass rod BC. Knowing that a torque of magnitude T= 10 kip in. is applied at A. Determine the required diameter of rod AB and
What would happen to the throughput of the line if we increased capacity at a non-bottleneck station and held WIP constant at its current level?
A vehicle traveling at 30 mph enters a 600 ft radius curve and begins to increase its speed at a rate of 10 ft/s^2. Find the total acceleration of this vehicle 3 seconds after it enters the curve.
The acceleration of a particle as it moves along a straight line is given by a = (2t-1)m/s^2, where t is in seconds. If s = 1m and v = 2m/s when t = 0s, determine the particle's velocity (v) and pos
Gold foil is 0.08 mm thick and 670mm^2 in area. (a) it is cubic with a=0.4076nm. How many unit cells are there in the foil? (b) what is the mass of each unit cell if the density is 19.32 Mg/m^3?
A rigid tank contains air at 600 kP a absolute pressure and 18? C . What is the change in pressure if the temperature is increased to 40? C ?
A bicyclist starts from rest after traveling along a straight ath a distance of 20m reaches a speed of 30km/h. Find his acceleration if it is constant. Also, how long does it take to reach the spee
A gas may be considered rare?ed, that is, it can not be studied with theories based on the continuum assumption, if it contains less than 1012 molecules per cubic millimeter.
A well-insulated rigid vessel contains 3 kg of saturated liquid water at 40 degrees Celsius. The vessel also contains an electrical resistor that draws 10 amperes when 50 Volts are applied.
There are three phases in a reservoir: oil, gas, and water. Assuming that all pores are occupied by fluids and the volume for each phase is as follows What are the saturations for oil, gas, and wate