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In the five-pipe horizontal network of Fig. P6.127, assume that all pipes have a friction factor ƒ= 0.025. For the given inlet and exit flow rate of 2 ft3 /s of water at 20°C, determine the flow rate and direction in all pipes. If pA= 120 lbf/in2 gage, determine the pressures at points B, C, and D.
a w200 x 31.3 rolled-steel beam is subjected to a couple m of moment 45 kn.m. knowing that e 200 gpa and v 0.29
At a point in a material under stress, the intensity of resultant stress on a certain plane (AB) is 60 N/mm2 (tensile) inclined at 30° to the normal to that plane. The stress on an another plane (CA) at right angles to this has a normal tensile co..
a pressure transducer exhibits a temperature sensitivity of 0.05 units per degree celsius and a pressure sensitivity of
A 40-mm-long, 2-mm-diameter pin fin is fabricated of an aluminum alloy (k = 140 W/m · K). (a) Determine the fin heat transfer rate for Tb = 50°C, Too = 25°C, h = 1000 W/m2 · K, and an adiabatic tip condition.
a raindrop of mass 3.36 10-5 kg falls vertically at constant speed under the influence of gravity and air resistance.
Build a mechanically powered vehicle (spring, pulleys, etc.) that weighs no more than 75 N and will travel 10 meters under its own power. Calculate potential energy, kinetic energy, work, and range
a steel railroad track es200 gpa as11.7x10-6oc was laid out at a temperature of 6oc. determine the normal stress in the
an insulatedthin walled pipe of 100mm diameter is used to transport water to equipment that operates outdoors and uses
a house has a composite wall of plaster board lp 10mm k0.72 wm.k fibre glass insulation lb100mm k1.4 wm.k and plywood
Explain why an electric refrigerator, which transfers energy by means of heat from the cold food storage compartment to the warmer air in the room, is not an impossible "clauses device."
A house rises to 35°C on a hot summer day. When the owner comes home they turn on the air conditioning system to cool the house down. Within 30 minutes the house is cooled to 20°C.
a supersonic nozzle is also a convergent-divergent duct which is fed by a large reservoir at the inlet to the nozzle.
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