Air is streaming past a horizontal airplane wing such that its speed is 120 metre per sec over the upper surface and 90 metre per sec at the lowers surface. If the density of air is 1.3 kg per `metre^(3)` and the wing is 10 metre long and has an average width of 2 metre, then the difference of the pressure on the two sides of the wing is :
A. 4095.0 pascal
B. 409.50 pascal
C. 40.950 pascal
D. 4.0950 pascal
