Air at 70°f flows parallel to a smooth, thin, flat plate at 16.5 ft/s. the plate is 10.6 ft long. determine whether the boundary layer on the plate is most likely laminar, turbulent, or somewhere in between (transitional). calculate the boundary layer thickness at the end of the plate where the boundary layer is laminar everywhere and where the boundary layer is turbulent everywhere (obtained from the one-seventh-power law). the kinematic viscosity of air at 70ºf is ν

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?