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Air is streaming past a horizontal airplane wing such that its speed is 120 m/s over the upper surface and 90 m/s at the lower surface. If the density of the air is 1.3 kg/m3and the wing is 10 m long and has an average width of 2 m, then the difference of pressure on the two sides of the wing is
  • a)
    4.095 Pa
  • b)
    405.9 Pa
  • c)
    4095 Pa
  • d)
    40.95 Pa
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Air is streaming past a horizontal airplane wing such that its speed i...
P' - P = (1/2)Xdensity of airX((V')^2_(V)^2)puting the values in the formula we get diff in pressure=4095
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Most Upvoted Answer
Air is streaming past a horizontal airplane wing such that its speed i...
Since both the wings are at the same height then by using the formula of bernouli's theorem we can solve it
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Community Answer
Air is streaming past a horizontal airplane wing such that its speed i...
Applying Bernoulli's principle, we have
P1+1/2​ρv12=P2+1/2​ρv22 
⇒P2​−P1=1/2ρ (v2/1−v2/2)
⇒ΔP=1/2​×1.3× (1202−902)
⇒ΔP=0.65× (120+90) × (120−90)
⇒ΔP=0.65×210×30=4095Pa
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Air is streaming past a horizontal airplane wing such that its speed is 120 m/s over the upper surface and 90 m/s at the lower surface. If the density of the air is 1.3 kg/m3and the wing is 10 m long and has an average width of 2 m, then the difference of pressure on the two sides of the wing isa)4.095 Pab)405.9 Pac)4095 Pad)40.95 PaCorrect answer is option 'C'. Can you explain this answer?
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