Identify the forces acting in the following cases- a) A boy pedaling his bicycle fast

b) Squeezing lemon to extract juice.

c) A magnet suspended freely with a thread.

d) A plastic comb attracts bits of paper.

e) Rain drops falling on ground.

f) A monkey climbing the rope.​

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2