Technician a says when preparing to lower an engine and transaxle with the subframe (cradle), the cradle must be securely strapped to the scissor jack before the cradle bolts are removed from the car. technician b says the cradle will automatically align itself if it's a good quality scissor jack. who is correct

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?

Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis

The proportional limit is always greater than the yield strength for a material. a)-trune b)- false