Which work practice should be followed to best prevent the ingestion of chemicals? A) Schedule tasks during peak exposure periods
B) Do not eat or drink in regulated areas
C) Use air and ventilations systems
D) Wear hearing protections

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

The mass flow rate of the fluid remains constant in all steady flow process. 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?