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Calculate the critical crack tip radius for a ceramic material that has a flexural strength of 638 MPa, an elastic modulus of 222 GPa, and experiences tensile fracture at an applied stress of 265 MP
The bottom of the distillation column is essentially ethanol free, 0.005% ethanol by mass. At what rate is liquid produced from the top and bottom of the column?
Distances are in meters. How much work is done in the time interval form t = 0 to t = 2 sec by a force whose components are Fx = 4+t^3 and Fy = 6t^4 in Newtons?
90 fpm for 30 min. 80 fpm for 90 min. 75 fpm for 150 min. a) estimate the cutting speeds to get tool lives of 60 and 120 minutes. b) calculate the mrr at the two speeds found in part a).
We want to recover 99.3% of the propanol in the distillate and 99.5% of the butanol in the bottoms. Find the distillate and the bottom flow rates and the mole fractions of the distillate and the bot
what is the fraction recovery of the enzyme and the amount recovered per minute? Assume negligible miscibility between the aqueous and organic liquids in each other
After osillating a litle the plugs settle concentrically with one another another as shown. What must be the relationships between the radii of the tubes.
If mechanical friction and wind resistance are neglected, determine the power developed by the engine if the automobile has and efficiency E=0.65.
One half of the loop is then folded back onto the other half, as indicated in part b of the drawing. Determine the magnitude of the average emf induced in the loop.
If a water tank is to be installed on the roof top of the UTPA administration building to supply water for the campus. How long (hours) could the 2,093 liter tank supply water at the rate of 79 lite
If 49% of the inlet flow exits through the first exit pipe, determine the mass flow rate (kg/s) in the second exit pipe. Assume steady-state operating conditions.
Determine the COP of the system when a temperature difference of T=2C is allowed for the transfer of heat in the evaporator.
If the compressor consumes 450 W of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the COP of the refrigerator.
Estimate the annual amount of limestone needed for FGD. Assume an 85% utilization of the limestone and that the plant meets NSPS.
Determine the volume of rainwater of pH = 5 resulting from one day of sulfur emissions. Assume all the sulfur that is emitted forms sulfuric acid, and that 65% of this acid is deposited as acid rain
What should have been the weight density (pg) of this mud in order to keep the reservoir fluid from flowing up the bore to the surface? Suppose water was used instead of mud.
Determine the amount of gypsum created from the capture and conversion of sulfur during copper production from copper sulfide (CuS) ore.
At the compressor exit, the air temperature is 620 K. How much of the turbine work output is available to power other devices, in addition to the compressor?
Using the general form of the Reynolds transport theorem; derive the equation of conservation of linear momentum for a control volume with Bsys being the linear momentum mV.
Due to the drag resistance of the fluid, the projectile experiences a deceleration of a = (-0.4 v^3) m/s2, where v is in m/s. Determine the projectile's velocity and position 4 seconds after it is f
A piston-cylinder device containing argon gas undergoes an isothermal process at 100 C during which the pressure changes from 200 kPa to 50 kPa.
Obtain the output response signal assuming a first order instrument and a static sensitivity of 5 mV/ degrees C. b.) Determine the dynamic error and time lag in the steady response. T(0) = 115 degre
The coefficient of restitution is e = 0.6. Before the impact, vA = 10i + 4j + 8k m/s and vB = - 2i - 6j + 5k m/s. What are the velocities of A and B after the impact?
If it is thrown downward, released it at 3 ft above the floor, how fast would it need to be thrown so that it would bounce to a height of 12 ft?
Derive the following: a.) Differential equation between input and output of the thermometer. B.) Compute the output temperature after 25 seconds.