Two technicians are discussing u-joints. technician a says that a defective u-joint could cause a loud clunk when the transmission is shifted between drive and reverse. technicians b says that a worn u-joint can cause a clicking sound often when driving the vehicle in reverse. which technician is correct?

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.

Using gravity, an elephant can pull a mouse towards it from the ground. true or false explain why. will give brainliest if answered fast and the best explanation

The force it would take to accelerate an 900-kg car at the rate of 6m/s2