Answer:
Explanation:
Hello,
In this case, by using the Bernoulli equation:
Whereas 
accounts for the heat loss, so we can compute the change of pressure by:
![p_1 +\frac{1}{2}\rho v^2_1+\rho gh_1= p_2+\frac{1}{2}\rho v^2_2+\rho gh_2+\rho h_L\\\\p_2-p_1=\frac{1}{2}\rho v^2_1+\rho gh_1-\frac{1}{2}\rho v^2_2-\rho gh_2-\rho h_L\\\\\Delta p=\rho *[\frac{1}{2}(v_1^2-v_2^2)+g(h_1-h_2)-h_L ]](https://tex.z-dn.net/?f=p_1%20%2B%5Cfrac%7B1%7D%7B2%7D%5Crho%20v%5E2_1%2B%5Crho%20gh_1%3D%20p_2%2B%5Cfrac%7B1%7D%7B2%7D%5Crho%20v%5E2_2%2B%5Crho%20gh_2%2B%5Crho%20h_L%5C%5C%5C%5Cp_2-p_1%3D%5Cfrac%7B1%7D%7B2%7D%5Crho%20v%5E2_1%2B%5Crho%20gh_1-%5Cfrac%7B1%7D%7B2%7D%5Crho%20v%5E2_2-%5Crho%20gh_2-%5Crho%20h_L%5C%5C%5C%5C%5CDelta%20p%3D%5Crho%20%2A%5B%5Cfrac%7B1%7D%7B2%7D%28v_1%5E2-v_2%5E2%29%2Bg%28h_1-h_2%29-h_L%20%5D)
Thus, we must first compute the velocity inside the 5-cm section by using the continuity equation:
It means that the change in pressure in Pa turns out (density is 1500 kg/m³ given the specific gravity of the fluid):
![\Delta p=1500\frac{kg}{m^3} *[\frac{1}{2}((1.2\frac{m}{s})^2-(1.92\frac{m}{s})^2)+9.8m/s^2(0m-15.0m)-25\frac{m^2}{s^2} ]\\\\\Delta p=1500\frac{kg}{m^3}*(-1.1232\frac{m^2}{s^2} -147\frac{m^2}{s^2} -25\frac{m^2}{s^2} )\\\\\Delta p=-259684.8Pa](https://tex.z-dn.net/?f=%5CDelta%20p%3D1500%5Cfrac%7Bkg%7D%7Bm%5E3%7D%20%20%2A%5B%5Cfrac%7B1%7D%7B2%7D%28%281.2%5Cfrac%7Bm%7D%7Bs%7D%29%5E2-%281.92%5Cfrac%7Bm%7D%7Bs%7D%29%5E2%29%2B9.8m%2Fs%5E2%280m-15.0m%29-25%5Cfrac%7Bm%5E2%7D%7Bs%5E2%7D%20%20%5D%5C%5C%5C%5C%5CDelta%20p%3D1500%5Cfrac%7Bkg%7D%7Bm%5E3%7D%2A%28-1.1232%5Cfrac%7Bm%5E2%7D%7Bs%5E2%7D%20-147%5Cfrac%7Bm%5E2%7D%7Bs%5E2%7D%20-25%5Cfrac%7Bm%5E2%7D%7Bs%5E2%7D%20%29%5C%5C%5C%5C%5CDelta%20p%3D-259684.8Pa)
Therefore, the change in pressure in bar and MPa turns out:
Such negative sign means that the pressure at the 5-cm section is lower than the pressure at the 8-cm section.
Best regards.
A baseline for experimental investigation is provided by an hypothesis. This is a must before conducting experiments. Also, it is the hypothesis that is being proved by doing the experiments. So, hypothesis is very important in research studies. Hope this answers the question.
Answer:
The CNO cycle (for carbon–nitrogen–oxygen) is one of the two known sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain reaction (pp-chain reaction). Unlike the latter, the CNO cycle is a catalytic cycle.
Physical isn't so chemical
Answer:
The type of galaxy that is described as revolving around a single point and has spinning arms of stars which extend from the center is;
Spiral
Explanation:
A spiral galaxy which is the most common type of galaxy is a class of Hubble sequence of galaxies which was described in the 1936 work The Realm of the Nebulae by Edwin Hubble
Spiral galaxies are therefore have a flat disk shape such that the stars, the dusts, and the gas that make up the galaxy cluster in several radially spreading spiral arms that come together in the galaxy center
