The rule of thumb amount of time to determine whether something is current or noncurrent is: 2 points
a week
a month
a year
a decade
a century

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

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?

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false