Arotating machine of mass m 100 kg is supported on four elastic mounts with a total stiffness of k 200, 000 n/m and damping constant of c 500 ns/m. the machine rotates at a speed of 6000 rpm and has an eccentric mass m 0.005 kg located at a distance of e 0.1 m from the axis of rotation. determine the amplitude of vibration of the machine. also determine the phase of vibration relative to the harmonic excitation.

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.

Air undergoes a constant pressure cooling process with no moisture added or removed. the air originally exists at 45 °c, 150 kpa and 35 % relative humidity. it is cooled until the temperature reaches 29 oc. determine (a) the relative humidity of the cooled air. (b) the dew point temperature of the cooled air in °c. (c) the heat removed during the cooling process in kj/kg. use the psychrometric chart to check your answers (this part will not be graded; however, it will you get comfortable using the psychrometric chart)

A)- define powder metallurgy b)- identify the major steps associated with the powder metallurgy process. present the answer in a point format, and include process flowchart. c)- identify two limitations and two advantages of the powder metallurgy process.