Determine steady-state creep rate at a given stress level
The steady-state creep rates at 473 K for an alloy is 2.5x10-3 (h-1) at 55 MPa and 2.4x10-2 (h-1) at 69 MPa. The activation energy for creep is 140 kJ/mol. Calculate the steady-state creep rate at 523 K at a stress level of 48 MPa.
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Given that the charge on the electron is 1.6 x 10^-19, about how many excess electrons must be on the drop to allow it to be suspended?
A fatigue test was conducted in which the mean stress was 70 MPa, and the stress amplitude was 210 MPa. a. Compute the maximum and minimum stress levels. b. Compute the stress ratio.
The indices of refraction for the blue and red components of the ray are: blue (ndiamond = 2.444, ncrown glass = 1.531), and red (ndiamond = 2.410, ncrown glass = 1.520). Determine the angle between the refracted blue and red rays in the crown gla
Is the carbon atom associated with magnesium electrophilicor nucleophilic? Write the conjugate acid of a Gringard reagent, and explain why Grignard reagents are strong bases.
The steady-state creep rates at 473 K for an alloy is 2.5x10-3 (h-1) at 55 MPa and 2.4x10-2 (h-1) at 69 MPa. The activation energy for creep is 140 kJ/mol.
Calculate the volume and the temperature of the gas at the higher altitude.
Calculate the total work done in one cycle in each cylinder of the engine, and the heat released when the gas is cooled to the temperature of the outside air.
If a cylindrical 1045 steel bar is subjected to repeated compression/tension stress cycling along its axis under a load amplitude of 66,800 N, compute the minimum allowable bar diameter to ensure that fatigue failure will not occur.
A loudspeaker is placed between 2 observers who are 110 meters apart along a line connecting them. if one observer records a sound level of 60 dB and the other records a sound level of 80 dB, how far is the speaker from each observer?
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