The pressure rise p associated with wind hitting a window of a building can be estimated using the formula p = rho(v2 /2), where rho is density of air and v is the speed of the wind. apply the grid method to calculate pressure rise for rho = 1.2 kg/m3 and v = 100 km/h. (20%) a. express your answer in pascals. b. express your answer in meters of water column (m-h2o).

The pressure rise p associated with wind hitting a window of a building can be estimated using the formula p = rho(v2 /2), where

Answers

Brennen435

i think it is the last one

Step-by-step explanation:

Check your answer if unsure

Jowell3858

a)P=462.70 Pa

b)h = 0.047 m of water

Explanation:

Given that

Pressure , $P=\dfrac{1}{2}\rho V^2$

$\rho = 1.2\ kg/m^3$

V= 100 km/h

$V=100\times \dfrac{1000}{3600}\ m/s$

V=27.77 m/s

The pressure P

$P=\dfrac{1}{2}\rho V^2$

$P=\dfrac{1}{2}\times 1.2\times 27.77^2\ Pa$

P=462.70 Pa

We know that density of the water $\rho=1000\ kg/m^3$

Lets height of the water column = h m

We know that

$_P=\rho _w g h$

462.70 = 1000 x 9.81 h

$h=\dfrac{462.7}{1000\times 9.81}\ m$

h = 0.047 m of water

a)P=462.70 Pa

b)h = 0.047 m of water

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