Type the correct answer in the box. Spell all words correctly. Two students measure the dimensions of a single-storey structure. One takes measurements from the outside, while the other takes measurements from the inside. The students discover that their measurements for the height of the wall vary. The dimensions of the height of the walls are greater when measured from the outside than when the same walls are measured from the inside of the structure.

What is the explanation for this difference in wall height?

The walls have a greater dimension in height when measured from the outside of the structure because of the presence of a
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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?

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false