7. a tube bank housing 10mm diameter tubes, st = sl = 20mm, consists of 10 rows of tubes with 50 tubes in each row. cold water flows through the tubes, maintaining the outer surface temperature at 27°c, while hot flue gases at 427°c and a velocity of 5 m/s flow over the tubes. the properties of the flue gas may be approximated as those of atmospheric air at 427°c. what is the total rate of heat transfer per unit length of tubes in the bank? state your assumptions!

d would be the most obvious choice to this question. leaders are supposed to herd their underlings like a shepherd to sheep. a leader should also listen to others when they are talking to one other to gain a better understanding of their mission and surroundings.

explanation:

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only