Show that for a fully-developed pipe flow, the pressure gradient along the flow direction is constant, regardless of flow laminar or turbulent. (i)considering that air flows through a pipe of 20 mm in diameter at room temperature and atmospheric pressure, estimate the velocity limit below which the laminar flow state can maintain. note that the kinematic viscosity of air is 1.010" m

Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate