Calculate the zero-lift angle of attack. b) Calculate the lift coefficient when α=5 degrees. c) If the airfoil is flipped upside down, what angle of attack is required to generate as much lift as in part (b)? d) Compare the results you obtained with experimental data for the NACA 4412 airfoil and note the percentage difference between theory and experiment. Where in your opinion lie the biggest discrepancies between theory and experiment?

An apple is falling from a tree. disregarding air resistance, which diagram shows the free-body diagram of the force or forces acting on the apple?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.