Steady-state creep data taken for an iron at a stress level of 139 mpa are given here:
'ϵs(h−1) t(k)
6.6 x 10^−48 1090.
8.8 x 10^−2 1200
if it is known that the value of the stress exponent n for this alloy is 8.4, compute the steady-state creep rate at 1310 k and a stress level of 87 mpa.

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed

Afan that can provide air speeds up to 60 m/s is to be used in a low-speed wind tunnel with atmospheric air at 35 c. if one wishes to use the wind tunnel to study flat-plate boundary layer behavior up to reynolds numbes of re 10, what is the minimum plate length that should be used? at what distance from the leading edge would transition occur if the critical reynolds nurnber were rer, e = 5 × 105?