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Consider a 1000-W iron whose base plate is made of 0.5-cm-thick aluminum alloy 2024-T6 (density= 2770 kg/m3 and cp= 875 J/kg · °C). The base plate has a surface area of 0.03 m2. Initially, the iron is in thermal equilibrium with the ambient air at 22°C. Assuming 85 percent of the heat generated in the resistance wires is transferred to the plate; determine the minimum time needed for the plate temperature to reach 140°C.
Newtons laws describing equations of motion for balance beam with cart (ball), Need to obtain a working mathematical model of the balance beam problem, preferably with a cart, not a ball
Given an aerodynamic body, you have learned in Aerodynamics and Flight Mechanics how to apply the numerical Source Panel Method to this body to determine the velocity and pressure profiles along the surface of the body.
The humidity of air can be determined by use of two different thermometers; a 'dry bulb' thermometer and a 'wet bulb' thermometer. explain how these thermometers can be used to estimate the amount of water vapour in the air.
In the an ideal turbo jet, the engine is designed such that the turbine work is divided equally between the compressor and the propeller. The gas from the turbine discharges to a nozzle for additional thrust.
Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.
Horsepower and efficiency of three-phase motor, If a fully loaded 440V, three-phase motor draws 12.4 A at 86% power factor (pf). It's speed is 1730 rpm and its torque output to a mechanical load is 29.1 lb-ft x 1.356 = 39.5 Nm.
write a reflective assessment of how you rate yourself against these competencies and Describe the main learning outcomes that this course and the EWB project have generated for you over the semester. Have any of these learning outcomes been a ..
Compare the time and cost of using the following three alternative methods for casting the concrete for the wall: 1) direct chute 2) pumped 3) crane and bucket.
Calculating the mechanical properties of unidirectionally reinforced composites
Effective Matching of Surface Roughness, Concerning the effective matching of surface roughness using a lathe, I have been asked to quantify Ra = C1* s^C2 v^C3 Re^C4
Determine the natural frequencies of the system. For the baseline system I get natural frequencies at the following engine speeds: 435, 2026, 2818, 5225, 7093, 10245, and 12153 rpm.
Focus mainly of consumer items such as iPods, coke bottles, running shoes
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