Home
Class 12
PHYSICS
Air streams horizontally past an air pla...

Air streams horizontally past an air plane. The speed over the top surface is 60 m/s, and that under the bottom surface is 45 m/s. The density of air is 1.293 kg/`m^(3)`, then the difference in pressure

A

1018`N//m^(2)`

B

516`N//m^(2)`

C

1140`N//m^(2)`

D

2250`N//m^(2)`

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

The density of air is 1.293 kg m^3 . Express it in cgs units.

Air stream flows horizontally past an aeroplane wing of surface area 4 m^(2) . The speed of air over the top surface is 60 ms^(-1) and under the bottom surface is 40 ms^(-1) The force of lift on the wing is (density of air = 1 kgm^(-3) )

Air is streaming past a horizontal air plane wing such that its speed is 120 ms^-1 over the upper surface and 90 ms^-1 at the lower surface. If the density of air is 1.3 kg m^-3 m find the difference in pressure between the top and bottom of the wing. If the wing is 10 m long and has an average width of 2 m , calculate the gross lift of the wing.

What is the mass of air in a room of dimensions 3mxx4mxx5m , when the density of air is 1.3 kg m^(-3) ?

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 :

The intensity of a plane progressive wave of frequency 1000 Hz is 10^(-10) Wm^(-2) . Given that the speed of sound is 330 m//s and density of air is 1.293 kg//m^(3) . Then the maximum change in pressure in N//m^(2) is

Given the density of air is 1.29 kg m^(-3) . Then, the relative density of air is ________.

Air is streaming pasta horizontal airplane wing such that its speed is 90 m at the lower surface and 120 ms^(-1) over the upper surface. lithe wing is 10 m long and has an average width of 2 m , the difference of pressure on the two sides and the gross lift on the wing respectively, are (density of air =1.3kgm^(-3) )

A fully loaded Boeing aircraft has a mass of 3.3xx10^(5) kg . Its total wing area is 500 m^(2) . It is in level flight with a speed of 960 km//h . (a) Estimate the pressure difference between the lower and upper surfaces of the wings (b) Estimate the fracitional increases in the speed of the air on the upper surfaces of the wing relative to the lower surface. The density of air is 1.2 kg//m^(3) .

Air flows horizontally with a speed v = 108 km/hr . A house has a plane roof of area A = 20 m^(2) . Find the magnitude of aerodynamic lift on the roof . [ Density of air = 1.3 kg//m^(3) ]