A reservoir 3m from the dam in Nimba as mentioned above has two pressure gauges installed at A and B where the diameters are 20cm and 12om respectively. A is 93m above B, the pressure gauge readings have
shown that the pressure at B is greater than at A as given in the pressure analysis in question one (1) above.
Noglecting all losses, calculate the flow rate (Liter'sec) if the gauges at A and B are replaced by tubes filled
with the same liquid and connected to a U-tube containing Mercury (Hg). Calculate the difference of level of
Hg in the two limbs of the U-tube, in a vertical pipe conveying oil of specific gravity 0.68 40 pts.​

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Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *