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Advertising. A company is trying to introduce a new product to as many people as possible through television advertising in a large metropolitan area with 2 million possible viewers. A model for the number of people N (in millions) who are aware of the product after t days of advertising was found to be
Graph this function for What value does N approach as t increases without bound?
calculate the the maximum length on the small diameter of a shaft that is supported by a bearing at each end with a
The cable supports a unit load w which decreases from 100 lb /ft at x = 0 to 40 lb /ft at x = 30 ft with the decrease propor- tional to x2. Determine the equation of the curve assumed by the cable.
a 5-lb roast initial at 70degf is placed in an oven at 350degf. you may assume the heat transfer coefficient is 2.5
A tubular aluminum bar (G = 28 GPa) of square cross section (see figure) with outside dimensions 50 mm x 50 mm must resist a torque T = 340 N ·m. Calculate the minimum required wall thickness t if the allowable shear stress is 31 MPa and the allow..
determine the smallest value of µ for which equilibrium is maintained.
A gas turbine receives a mixture having the following molar analysis: 10% CO2, 19% H2O, 71% N2 at 720 K, 0.35 MPa and a volumetric flow rate of 3.2 m3 /s. The mixture exits the turbine at 380 K, 0.11 MPa. For adiabatic operation with negligible kinet..
a rigid well-insulated tank contains 3 kg of a 2-phase liquid-vapor mixture of water initially at 200 kpa with a
A piston-cylinder device has an initial contained volume of 0.1 ft3 and contains steam at an initial state of 160 psia, 500°F. The steam is then expanded to 20 psia, 0.65 ft3 and as a result of this process 0.50 Btu of heat is transferred to the syst..
if an isotropic material has a poissonamp39s ratio v. find the percent of volume change after a cube specimen is
a hydraulic cylinder must be able to exert a force of 45.5 kn. The piston diameter is 65 mm. Compute the required pressure in the oil
You have a centrifugal pump with an inlet radius of 200mm, an inlet blade width of 60mm, and inlet blade angle of 50 degrees. The outlet radius is 600mm, outlet blade width is 40mm and the outlet blade angle is 70 degrees. The pump handles water and ..
Plot (or provide an animation) of the four bar mechanism in at least 3 positions throughout the motion (on one diagram). Describe how the mechanism is designed in order to maintain planar motion (i.e. how are constraints applied to limit motion).
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