Answer:
817.5 Pa
Explanation:
From Bernoulli's equation, considering thst there is no height difference then
P1+½d(v1)²=P2+½d(v2)²
P1-P2=½d(v2²-v1²)
∆P=½d(v2²-v1²)
Where P represent pressure, d is density and v is velocity. Subscripts 1 and 2 represent inside and outside. ∆P is tge change in pressure
Given the speed at roof top as 128 km/h, we convert it to m/s as follows
128*1000/3600=35.555555555555=35.56 m/s
Velocity at the bottom of roof is 0 m/s
Density is given as 1.293 kg/m³
∆P=½*1.293*(35.56²-0)=817.5 Pa
<span>The relationship between two quantities that increase or decrease together is called directly proportional.
It is a directly proportional relationship because being directly proportional means that if one increases so does the other, and if one goes down so does the other.</span>
choice 3 because the arrow has to be downward for as. and if the divers want to live, the vx has to be going right and not 0 or they would hit the rocks. I hope it's right!
The law of conservation of mass states that- "mass<span> in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of </span>conservation of mass<span>, the </span>mass<span> of the products in a chemical reaction must equal the </span>mass<span> of the reactants."
Therefore, the mass of the reactant is the same as the mass of the products.</span>
