Combustion air in a manufacturing facility is to be preheated before entering a furnace by hot water at 90 C flowing through the tubes of a tube bank located in a duct. Air enters the duct at 15 C and 1 atm with a mean velocity of 4 m/s, and flows over the tubes in normal direction. The outer diameter of the tubes is 2 cm, and the tubes are arranged staggered with longitudinal and transverse pitches of SL=ST = 6 cm. There are eight rows in the flow direction with eight tubes in each row.

are there actual statements because if not my answer would be: that using the five senses the author can create a sense of worth in an object to appeal to the reader and create meaning.

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.