2. When pouring the concrete sidewalk shown
in Figure 53, approximately how many cubic
feet o...
Engineering, 10.12.2020 16:50 swaggg2084
2. When pouring the concrete sidewalk shown
in Figure 53, approximately how many cubic
feet of topsoil will you need to remove for the
4" thick sidewalk if the owner wants the finish
surface of the sidewalk to be level with the
topsoil? cu ft (round your answer to the
nearest % cubic foot.)
Answers: 3
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Fluids at rest possess no flow energy. a)- true b)- false
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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?
Answers: 1
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Answers: 3
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