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A circumferential fin of cross section, 3.7 cm-OD and 0.3 cm-thick surrounds a 2.5 cm-diameter tube. The fin is constructed of mild steel. Air blowing over the fin produces a heat transfer coefficient of 28.4 W/(m2.K). If the temperature of the fin and the air are 260°C and 38°C, respectively, calculate the heat transfer rate from the fin.
A mass of 0.5 g of air is contained in a piston-cylinder device. Initially the system is at 100 kPa and 25°C. The system is now compressed adiabatically to a volume 17 times smaller and a temperature of 700 K.
Determine the power input (hp) to the compressor and the rate of heat transfer (Btu/hr) removed from the nitrogen in the heat exchanger.
Determine an expression for the number of cycles to failure, Nf if the initial crack size is a0. State any assumptions you make.
retrofit an existing clamp and drill circuit for maximum effeiciency. the cylinder that clamps the part into place is a
many bridge designs today contain simple geometrical components but are constructed into complex ways to ensure that
Consider the interaction of two vortex rings of equal strength and similar sense of rotation. Show that they go through each other.
refrigerant gas r-134 at 500k and 70 degrees c enters an air-cooled condenser heat exchanger and leaves the condenser
A satellite is in Earth orbit with an altitude at perigee of 555.0 km and an altitude at apogee of 1200.0 km. a. What is the semi-major axis of the orbit? b. What is the eccentricity? c. If the true anomaly is 160 degrees, what is the satellite's ..
the pipe assembly is secured on the wall by the two brackets. if the weight of the flower pot is 50 lba determine
a small 0.6-lb collar d can slide on portion ab of a rod which is bent as shown. knowing that r 8 in and that the rod
in an ideal dual combustion cycle conditions at the commencement of adiabatic compression are 93 kpa 0.05 m3 and 24degc
A single disc clutch with both sides of the disc effective is used to transmit 10 kW power at 900 r.m.p. the axial pressure is limited to 0.085 N/mm^2. If the external diameter of the friction lining is 1.25 times the internal diameter find the requi..
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