A vertical pipe of 40mm diameter carrying a flow of a Crude oil of μ = 1.7 poise and relative density 0.82. The pressure gauges fixed in point A and point B which is above A, the distance between A and B is 50 m. Pressure gage of point A reads 650 kN/m2 and Pressure gage of point B reads 300 kN/m2. Find the direction and rate of flow through the pipe? ​

Two red blood cells each have a mass of 9.0 multiply.gif 10-14 kg and carry a negative charge spread uniformly over their surfaces. the repulsion arising from the excess charge prevents the cells from clumping together. one cell carries −2.50 pc of charge and the other −3.10 pc, and each cell can be modeled as a sphere 7.5 μm in diameter. (a) what speed would they need when very far away from each other to get close enough to just touch? assume that there is no viscous drag from any of the surrounding liquid. answer is: 321 m/s how do i find this (b) what is the maximum acceleration of the cells in part (a)? answer is: 1.38e+10 m/s2 how did they find this answer

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.