2. true or false? if false statement, correct the statement. recursive functions: a. often fewer local variables than the equivalent nonrecursive routines. b. generally user while or for statements as their main control structures. c. are possibly only in languages with static storage allocation. d. should be used whenever execution speed is critical. e. are always shorter and clearer than the equivalent nonrecursive routines. f. must always contain a path that does not contain a recursive call. g. are always less efficient, in terms of big-o complexity.

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w