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Determine the following for a pair of standard spur gears in mesh:
(a) an equation for the center distance C as a function of the numbers of teeth and module;
(b) the various combinations of 20° gears that an be used to operate at a center distance of 120 mm with an angular velocity ratio of 3:1. The module is not to be less than 2, and the gears are not to be undercut. The gears are to be hobbed.
For each case, determine the specified property value and locate the state by hand on sketches of the p-y and T-y diagrams.
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How can you tell what kind of primary atomic bonding is present by noting where the involved elements are located on the periodic table? Describe how the electron negativity difference between atoms affects the ionic/covalent character of a bond.
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a j type thermocouple referenced at 70f has a measured emf of 2.878mv. what is the tempature of the measured
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