A field is in the form of a regular hexagon. The directions of the bounding sides were surveyed with an assumed meridian (4.5 + 0.5B)° to the right of true north. As surveyed with an assumed meridian, the bearing of one side

AB is N 35°30’W. Calculate the true bearings and true azimuths of all sides.

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?