Airflow separation over the wing can be delayed by using vortex generators, a. directing a suction over the top of the wing or flap through slots and making the wing surface smooth. b. directing high pressure air over the top of the wing or flap through slots and making the wing surface smooth. c. making the wing surface rough and/or directing high pressure air over the top of the wing or flap through slots.

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

Which radioisotope is used in dating geological formations?

Why should the wavelength scale of spectroscope be calibrated