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A sample holder of 99% pure aluminum, 1 cm in diameter and 16 cm in length, protrudes from a small housing on an orbital space vehicle. The holder "sees" almost nothing but outer space at an effective temperature of 30 K. The base of the holders is 0?C and you must find the temperature of the sample at its tip. It will help if you note that aluminum is used, so that the temperature of the tip stays quite close to that of the root. [Tend = -0.7?C.]
a vertical post consists of a steel pipe of 80 mm diameter and 6 mm wall thickness fixed at the bottom and free at the
the uniform work platform which has a mass per unit length of 21 kgm is simply supported by cross rods a and b. the
The pressure is positive on the windward side of the hut and is negative on the leeward side. Determine the total horizontal shear Q on the foundation per unit length of roof mea- sured normal to the paper.
a hydrogen gas in a pistoncylinder assembly at 280k 100 kpa with a volume of 0.1 m3 is now compressed to a volume of
A polutry farm owns 100 laying hens. Each week a hen can either lay 12 eggs or hatch 4 eggs, but not both. At the end of the four-week period all eggs and chicks will be sold: an egg will bring 10 cents, and a chick will bring 60 cents.
a pressure gage reading is 20 mm deltahg. if the gage is located at an elevation of 2000m.what is the absolute
the lifetime of a lightbulb is normally distrbuted with a mean of 1000 hrs and a standard deviation of 30 hours. find the probability that a randomly selected light bulb last longer than 1045 hours.
A bullet is fired horizontally into a wood block resting on a horizontal, frictionless surface. If the mass of the bullet is 0.02 Kg and the velocity is 600 m/s
Determine the quantity of asphalt and granular material required for the parking lot. The asphalt is 4 inches thick and granular material is 8 inches thick.
the acceleration of gravity g as a function of elevation z above sea level is given by g 32.17 - 3.32x10-6 z where g
Ultra-pure hydrogen is required in applications ranging from the manufacturing of semiconductors to powering fuel cells. The crystalline structure of palladium allows only the transfer of atomic hydrogen (H) through its thickness, and therefore pa..
Consider the torsion of a rod that is 1 m long and 50 mm in diameter. A. If one end of the rod were twisted by 1.2? relative to the other end, what would be the largest principal strain on the surface?
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