Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Consider how dislocation intersections affect the stress necessary to continue slip. Let the density of screw dislocations be ρ (meters of dislocations/m3) and for simplicity assume that these dislocations are equally divided into three sets of dislocations, each set being parallel to one of the three orthogonal axes.
A. Assume each set of dislocations is arranged in a square pattern. Express the distance between the dislocations in a set in terms of ρ.
B. Now, consider the jogs formed as a screw dislocation moves. What will be the distance between jogs?
C. Assume the energy of forming a row of interstitials is so high that the jogs essentially pin the dislocation. Express the shear stress necessary to continue the motion in terms of G, b, and ρ.
D. Now assume that the dislocation density is proportional to √ε. What would this model predict as the value of n in σ = Kεn?
two streams of air mix in a constant-area mixing tube the primary stream enters the mixing tube at station 1 with a
An inventor claims to have developed a power cycle rejecting heat into a cold reservoir at 300 K. If it is claimed that the thermal efficiency is 40%, evaluate the claim if the hot reservoir is at a) 800 K, b) 300 K and c) 600 K.
Air is compressed steadily in a compressor from 100kPa and 300 K to 1 Mpa and 500 K. The compressor is not well insulated and a heat loss of 40 KJ/kg occurs during the process. Assuming the changes in kinetic and potential energies are negligible, de..
As shown, a member is fixed at the origin, point O, and has an applied force F, the tension in the rope, applied at the free end, point B. The force is given by F=130 N i 135 N j+70 N k. The dimensions are x1 = 1.35 m, y1 = 1.90 m, and z1 = 1.15 m. W..
a boat of length 50 m is designed to cruise at 30 mph and is to be tested in a tow tank with a model of length 0.5 m.
which emits more sox per unit amount of electricity produced a coal-fired plant with a 90 efficient so2 scrubber or an
a refrigerator with a coefficient of performance of 4 transfers heat from a cold region at -20c to a hot region at 30c.
Calculate the adiabatic flame temperature attained when methane at 298k, is combusted (a) with oxygen in the molar ratio air/CH4 = 9.524. Assume that CO2 and H2O are the products of the combustion. The adiabatic flame temperature is that temperature ..
consider a vertical plate of dimension 0.25 m x 0.50 m that is at ts100 c in a quiescent environment at t? 20 c. in
Draw a free-body diagram that identifies all the forces acting on the block in motion.
hypothesis testing. think of a problemissue in your job or in life that can be addressed using a hypothesis test.
For a normal distribution, find the z score values that separate
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd