If we were to build the keepsake box, what are 2 important things you would do to make sure all of the pieces lined up correctly so that they could be
assembled into a box?

How to convert a friction to decimal ?

Along steel shaft of 10 cm diameter is austenised at 870°c and then quenched in a liquid at 30oc. the average surface heat transfer coefficient is 2000 w/m2. °c. the relevant thermophysical properties of the shaft are: p=7800 kg/m", k=20 w/mk, cp=0.46 kj/kg.k calculate: a)-the time required for the center temperature to drop to 200°c. b)-the temperature at half-radius at that moment. c)-the amount of heat that had been transferred to the liquid by that time per meter length of the shaft

At what temperature does the mole fraction of no reach 0.010 for the equilibrium products resulting from the combustion of gasoline and air at 1.0 and 5000 kpa?