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A cylindrical pipe with inner and outer radii of 1.0 m and 1.1 m respectively, is comprised of a material such that the thermal conductivity is simultaneously dependent on radius and temperature, such that k = t/r2. The radius (r) is in metres, while t is expressed in degrees Celsius. The pipe is placed in air with a temperature of 20 oC. If heat transfer from the pipe to the outer air is 10 kW/m and the heat transfer coefficient by convection h=100 W/m2K, determine the temperature of the outer pipe wall surface, the equation of temperature field within the pipe material and the temperature at the inner pipe wall surface.
a solid cylinder of radius r and mass m is initally at rest on the bed of a truck. the distance from the center of the
A 200 kg crate is to be supported by the rope and pulley arrangement shown. Determine the magnitude and direction fo the force P that must be exerted on the freee end of the rope to maintain equillibrium.
What is the initial velocity of Block B, constant acceleration of Block A, velocities of both blocks at t=3s, and the total distance traveled by block B from t=0s to t=3s?
8 x product engineering and design review (week 2 – 12), ~3 pages per item which must contain a brief description of the product then delve into concepts such as materials selection, manufacturing methods, life cycle analysis, recyclability and overa..
If the beam has square cross section of 9 in., on each side, determine the absolute maximum bending stress in the beam.
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
a 0.2 lb block is initially moving horizontally at 5 fts when r1 4 ft it slides around the smooth inside surface of
Calculate the number of vacancies per cubic meter in gold at 900°C. The energy for vacancy formation is 0.98 eV/atom. Furthermore, the density and atomic weight for Au are 18.63 g/cm3 (at 900°C) and 196.9 g/mol, respectively.
a heat pump cycle operates between a geothemial reservoir and your house. the cycle requires 200 kw to operate with a
A 40 mm diameter hole is drilled 3 m deep into the steel shaft. When the two torque are applied, determine (a) the maximum shear stress in the shaft: and (b) the angle of rotation of the free end of the shaft. Use G= 83GPa for steel.
what is the cw when i10 per year of 1500 per year starting in year one and continuing forever and 10000 in year five
Calculate real gas pseudopressure at a pressure of 1902.7 psia using the following data and a base pressure of 102.7 psia. Was the calculation of real gas pseudopressure necessary for this gas? Explain your answer.
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