Engineering, 29.09.2019 01:30 diego481
What is the activation energy (q) for a vacancy formation if 10 moles of a metal have 2.3 x 10^13 vacancies at 425°c?
Answers: 3
Engineering, 04.07.2019 18:10
Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
Answers: 1
Engineering, 04.07.2019 19:10
How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?
Answers: 2
Engineering, 04.07.2019 19:10
Acircular aluminum shaft mounted in a journal is shown. the symmetric clearance gap between the shaft and journal is filled with sae 10w-30 oil at t 30°c. the shaft is caused to turn by the attached mass and cord. develop and solve a differential equation for the angular speed of the shaft as a function of time.
Answers: 2
Engineering, 06.07.2019 03:10
Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg. a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?
Answers: 1
What is the activation energy (q) for a vacancy formation if 10 moles of a metal have 2.3 x 10^13 va...
Mathematics, 04.02.2021 19:50
English, 04.02.2021 19:50
Mathematics, 04.02.2021 19:50
Mathematics, 04.02.2021 19:50
Social Studies, 04.02.2021 19:50
Chemistry, 04.02.2021 19:50
Biology, 04.02.2021 19:50
Geography, 04.02.2021 19:50
History, 04.02.2021 19:50
Chemistry, 04.02.2021 19:50
Mathematics, 04.02.2021 19:50