I) A sag vertical curve is to be designed to join a 4% grade to a 2% grade. If the design speed is 50 mi/h, determine the minimum length of the curve. Assume a = 11 ft /sec2 and
perception-reaction time = 2.5 sec. Consider the following criteria:
a) Stopping sight distance
b) Comfort

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above