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Design a polymer material that might be used to produce a 3-in.-diameter gear to be used to transfer energy from a low-power electric motor. What are the design requirements? What class of polymers (thermoplastics, thermosets, elastomers) might be most appropriate? What particular polymer might you first consider? What additional information concerning the application and polymer properties do you
Detennine (1) the required shaker frequency to cause "resonance" and (2) the dynamic magnification ofresponse compared with static response for that level of damping.
A Carnot heat engine is supplied with a high temperature heat source at a rate of 200 kW. If the power output of the heat engine is 120 kW, determine the required source temperature if the heat sink temperature is 20 °C.
calculate maximum external pull in each gear of a tractor when given speed, slope, weight, and rolling resistance
Determine the tension-compression boundary for an axially loaded I-beam
How is the P-v-T behavior of a component in an ideal-gas mixture expressed? How is the P-v-T behavior of a component in a real-gas mixture expressed?
The river characteristics just upstream of the wastewater discharge are: flow = 7.5 m3/s, BOD = 5.5 mg/L, DO = 90% of saturation, and temperature = 25oC. For this water, kd = 0.18 d-1 and kr = 0.22 d-1.
A storage pile of crushed rock is 100ft by 100ft square at its base and 50 ft by 50 ft square on the top. The pile is 25 ft high. What is the volume of rock in the rock pile
Assuming isentropic flow, determine the initial mass flow rate of air through the leak.
Knowing that the tension in cable AD is 405, determine (a) the angle between cable AD and the boom AB, (b) the projection on AB of the force exerted by cable AD at point A.
Is a soil with a hydraulic conductivity of 1*10-5 cm/s and depth of 10 ft equivalent to a soil with hydraulic conductivity of 1*10-6 cm/s and depth of 5 ft? (show mathmatically)
evaluate this formula numerically for the case treated following Eq. (8.4.26), where
Determine the maximum radius R (to the nearest 10m) so that there are at least 200m of tangent between the two curve systems and determine the Pl, ST., and CPI stations
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