science

Wind blows at the speed of 30m/s across a 175m^2 flat roof if a house.
what is the pressure difference between inside the house and the outside of the house just above the roof? (assume the air pressure inside the house is atmospheric pressure) ​

what is the force on the roof due to pressure difference?

  1. 👍 1
  2. 👎 0
  3. 👁 44
  1. rho = about 1.2 kg/m^3
    pressure diff = (1/2) rho v^2 = 0.6 (900) = 640 Newtons/m^3 or Pascals
    force = 640 * 175 Newtons

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    (a)If the wind blows at 30m/s over the roof of your house, what is the pressure difference at the roof between the inside and outside air (b) What net force does this pressure difference produce on a roof having an area of 175m^2?

    asked by Anonymous on December 16, 2007
  2. Math

    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. Need help

    asked by Catie on August 14, 2011
  3. physics

    during a thunderstorm,wind with a speed of 47.7 m/s blows across a flat roof with an area of 688m/^2 .Find the magnitude of force exerted on the roof by the wind

    asked by Thini on September 2, 2011
  4. general physics

    If wind blows at 30 m/s over a house, what is the net force on the roof if its area is 300 m^2 and is flat?

    asked by Anonymous on April 18, 2010
  5. APphysicsB

    If wind blows at 26 m/s over a house, what is the net force on the roof if its area is 241 m2 and is flat?

    asked by moody on February 22, 2011
  1. physics

    If wind blows at 44 m/s over a house, what is the net force on the roof if its area is 180 m^2 and is flat?

    asked by kayla on November 15, 2009
  2. physics

    A 45 m/s (100 mph) wind blows across the top of a flat-roofed house. Calculate the net force on the roof due to the pressure differential from inside the house to the outside. Assume that the pressure in the house is atmospheric

    asked by badgurl on January 6, 2013
  3. physic

    If wind blows at 34m/s over a house, what is the net force on the roof if its area is 170m2 and is flat? (At 20 ∘ C dry air has a density of 1.2 kg/m3).

    asked by Charles on April 7, 2014
  4. Math

    A hurricane wind blows across a 6.00 m times 15.0 m flat roof at a speed of 190 km/hr. What is the pressure difference? Use 1.28 kg/m^3 for the density of air. How much force is exerted on the roof? If the roof cannot withstand

    asked by Catie on August 15, 2011
  5. Advanced Physics

    If wind blows at a speed of 30 m/s over the roof of your house, what is the pressure diference on your roof between the air inside and the air outside? What net force does this produce on a roof having an area of 175 m^2? 1.3

    asked by Katie on December 5, 2010
  6. PHYSICS - HELP

    A wind with speed 45 m/s blows across a roof 20 m long and 12 m wide. The pressure inside the room is 1 atm. What is the net force on this roof due to the pressure difference inside and outside the roof? (The density of air is

    asked by Deana on August 10, 2011

More Similar Questions