Consider an infinitely thin flat plate of chord c at an angle of attack α in a supersonic flow. the pressures on the upper and lower surfaces are different and linearly varying over each surface; that is, pu(s) = c1 (x/c) and pl(s) = c2 (x/c), where c1 and c2 are constants and c2 > c1. ignoring the shear stress, calculate the location of the center of pressure. (round the final answer to two decimal place.)

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?