Assuming that that hourly volume given in question 4-5 is the same for each hour from 7am to 6pm, that the hourly volumes from 6pm to 11 pm are 1,400 cars, 60 mt and 40 ht, and that the hourly volumes from 11pm to 7am are 800 cars, 30 mt and 20 ht. the constant speed for 24 hrs is 45 mph, and the distance is 75'. the road is flat and there is no stop and go. calculate the hourly leqs using both methods (12 points). calculate the two ldns using the spreadsheet posted on moodle (8 points). calculate the ldn using the hud methodology (figures follow) and the ontario equation on slide 119 by summing the hourly traffic volumes (20 points)

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

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?