Which statement from the article would be MOST important to include in a summary of the article? (A) In mathematics, Muslim scholars introduced the use of zero, and even the Arabic word "algebra."
(B) Much of the knowledge developed by Muslims allowed Europeans to move past the Dark Ages.
(C) There was a great deal of money to be made from building this infrastructure.
(D) Cellular phones, for example, are increasingly popular in the Middle East.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

On a average work day more than work place firs are reorted