Air is streaming past a horizontal air plane wing such that its speed in 120m//s over the upward surface and 90m//s at the lower surface . If the density of air is 1.3kg//m^(3) and the wing is 10 m long and has an average width of 2m , then the difference of the pressure on the two sides of the wing of ...... Pascal .

Air is streaming past a horizontal air plane wing such that its speed

1.	Air is streaming past a horizontal air plane wing such that its speed in 120m//s over the upward surface and 90m//s at the lower surface . If the density of air is 1.3kg//m^(3) and the wing is 10 m long and has an average width of 2m , then the difference of the pressure on the two sides of the wing of ...... Pascal .
Answer» `4095.0` `409.50` `40.950` `4.0950` SOLUTION :Using Bernoulli.s THEOREM for horizontal pipe , `P_(1)+(1)/(2)rhov_(1)^(2)=P_(2)+(1)/(2)rhov_(2)^(2) "" [becauseh_(1)=h_(2)]` `P_(2)-P_(1)=(1)/(2)RHO(v_(1)^(2)-v_(2)^(2))` `=(1)/(2)xx1.3[(120)^(2)-(90)^(2)]` `=(1)/(2)xx1.3[14400-8100]` `=(1)/(2)xx1.3xx6300` `thereforeP_(2)-P_(1)=4095Pa`