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Two 415,000-lb locomotives pull 41 205,000-lb coal hoppers. The train starts from rest and accelerates uniformly to a speed of 42 mi/hr over a distance of 9200 ft on a level track. The constant rolling resistance of each car is 0.007 times its weight. Neglect all other retarding forces and assume that each locomotive contributes equally to the tractive force. Determine (a) the tractive force exerted by each locomotive at 21 mi/hr, (b) the power required from each locomotive at 21 mi/hr, (c) the power required from each locomotive as the train speed approaches 42 mi/hr, and (d) the power required from each locomotive if the train cruises at a steady 42 mi/hr.
analyze the effect that carbon content has on microstructure and material properties. bull cite specific points on your
Determine the heat transfer coefficient for laminar flow over this cylinder. First, at your discretion, select an available set of experimentally obtained data from the literature. Then, this would provide you with a set of Reynolds numbers.
in the absence of stress the center-to-center atomic separation distance of two al atoms is 0.286 nm. under a tensile
two structural members b and c are bolted to the bracket a. knowing that the tension in member b is 6kn and that the
if a piping system is designed and sized for a uniform pressure loss of 4 psi per 100 feet of piping and the
experiment can be used to investigate heat transfer associated with flow past cylindrical tubes either in isolation or
make a text file that contains what is your absolute path, and call it paths.txt
large cylindrical bales of hay used to feed livestock in the winter months are d2m in diameter and are stored
a cylindrical specimen of an aluminum alloy has a youngs modulus of 59gpa original length of 250mm length at fracture
in each cycle of its operation a refrigerator removes 17j of heat from the inside of the refrigerator and releases 40j
Show that the total true strain is the sum of the true strains in each step, that is the true strains are additive. Show that using engineering strains, the strain for each step cannot be added to obtain the total strain.
At what location s will the combined moment of the weights of the man and platform about point B be zero?
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