Engineering, 06.07.2019 03:10 tyheath42
Steel balls 12 mm in diameter are annealed by heating to 1150 k and then slowly cooled to 400 k in an air att 325 k and h -20 w/m2 k. assume the properties of the steel to be k- 40 w/m k, p 7800 kg/m3, and cp 600 j/kg k. a. determine whether lumped system method can be used to analyze this problem and if so why" b. determine the time required for the cooling process. c. determine the total amount of heat lost from each ball to the ambient air
Answers: 1
Engineering, 04.07.2019 18:10
The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false
Answers: 1
Engineering, 04.07.2019 18:20
Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false
Answers: 3
Engineering, 04.07.2019 18:20
Steam enters a converging nozzle at 3.0 mpa and 500°c with a at 1.8 mpa. for a nozzle exit area of 32 cm2, determine the exit velocity, mass flow rate, and exit mach number if the nozzle: negligible velocity, and it exits (a) is isentropic (b) has an efficiency of 94 percent
Answers: 2
Engineering, 04.07.2019 18:20
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
Steel balls 12 mm in diameter are annealed by heating to 1150 k and then slowly cooled to 400 k in a...
History, 12.10.2019 08:20
English, 12.10.2019 08:20
Biology, 12.10.2019 08:20
Mathematics, 12.10.2019 08:20
Physics, 12.10.2019 08:20
History, 12.10.2019 08:20
Physics, 12.10.2019 08:20
Mathematics, 12.10.2019 08:20
Mathematics, 12.10.2019 08:20
Social Studies, 12.10.2019 08:20
Mathematics, 12.10.2019 08:20
Biology, 12.10.2019 08:20