A hurricane wind blows across a 5.8 m × 17.56 m flat roof at a speed of 183 km/hr. Required:
a. What is the pressure difference below and above the roof?
b. Is the air pressure above the roof higher or lower than the pressure inside the house? Explain.
c. How much force is exerted on the roof?
d. If the roof cannot withstand this much force, will it "blow in" or "blow out"?

Asquare 1m x 1m plate is shown below. all four of its edges are kept at 0 co. at t=0the temperature distribution is given by: y xtsins n75)=.a) using separation of variables determine the temperature distribution t(x,y,t)along the plate at any time t.b) discretize the heat conduction equation +=22222 txtusing a second-order centered difference scheme for the two second derivatives and a first-order forward euler scheme for the first derivative. using von neumann stability analysis, determine the stability criterion for the proposed discretization scheme in terms of , hand t. solve for the maximum allowable time step tmax