Which of the following differentiates a police officer from a detective? O A police officer collects evidence of crimes.
O A police officer arrests suspects
O A police officer testifies in court cases.
O A police officer patrols assigned areas.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

Burgers vector is generally parallel to the dislocation line. 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?