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A hurricane wind blows across a 6.00 m times 15.0 m flat roof at a speed of 190 km/hr.
Is the air pressure above the roof higher or lower than the pressure inside the house? Explain.

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  • Physics -

    Bernoulli equation:
    p + (1/2) rho v^2 = constant
    where v is high, p is low.

    v --> 0 at house wall so pressure is high at open window (something will be open because force breaks window)
    so the pressure is higher inside and roof is lifted up.

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