Pay attention to the following questions! Daniel developed a coding system consisting of 4 digits, to encode a word into a secret word as follows
A. The first letter is always taken.
B. Delete all the letters A, E, I, O, U, H, W, and Y.
C. Change the letter to a number with the following rules.
D. Replace two or more letters that appear consecutively with the letter followed by the number of occurrences.
E. Just take the first 4 digits, add 0 if less than 4 to become 4 digits

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.