You are given two lists, one ofmboys and one ofngirls. you are also givenwhether a pair of a boy and girl likes to play together or not. you are asked to find if you can find exactlykpairs of boys and girls that like to play together. give an algorithm to determine if you can make exactlykpairs. if it is possible, your algorithm should determine the pairs and run ino(kc)time, wherecis thenumber of compatible pairs. (you are guaranteed thatkis less than or equal to bothmandn)

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length