Engineering, 05.05.2020 06:36 oranjejuice
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
Answers: 1
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
Engineering, 04.07.2019 18:10
Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.
Answers: 1
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
A polycrystalline copper alloy contains a dispersion of hard aluminum oxide particles of diameter 10...
Mathematics, 21.01.2021 23:50
History, 21.01.2021 23:50
History, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50
Mathematics, 21.01.2021 23:50