What factors do we need to know that affect unit operation and why do we need to know these factors?

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

Fluids at rest possess no flow energy. a)- true b)- false