A polycrystalline copper alloy contains a dispersion of hard aluminum oxide particles of diameter 10-8 m and an average center-to-center distance of 2.5 x 10-8 m, measured in the slip planes. The Young’s modulus of Cu is E = 120 GPa and the Burger’s vector b = 0.255 nm. Estimate the contribution of the hard particles to the yield strength of the alloy

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m

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.