Consider a gray squirrel falling out of a tree to the ground. A) If we ignore air resistance in this case (only for the sake of this problem), determine a squirrel's velocity (in m/s) just before hitting the ground, assuming it fell from a height of 3.0 m.
B) If the squirrel stops in a distance of 3.8 cm through bending its limbs, compare its deceleration with that of World War II airmen. (Assume the deceleration of the airmen was 486 m/s2 as they made impact with a snow bank at 54 m/s and stopping distance of 3.0 m).

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?

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.

Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k