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The objective of this project is to design a low-cost, electric-powered, portable or wearable consumer product that meets a need you have identified. In performing every function, the electricity required must come fully from human motion. No electricity from batteries and/or wall sockets is allowed. Additionally, the product must not be intrusive or interfere with the normal activities of the user, alter his/her gait or range of motion, lead to possible physical disability, or induce accidents leading to injury. The product cannot resemble any existing product unless it has a valuable new feature, significantly reduces cost, or provides some other meaningful advantage. The final report will include schematics, circuit diagrams, a parts list, and a suggested retail cost based on comprehensive costing.
air flow along a length of a 50x50cm square heated flat plate is in a large room the plates surface is at a uniform
The cantilevered bar in the figure has a circular cross section and is subject to bending and torsion. The normal stress due to bending in x=28 kpsi and the shear stress due to torsion is xz=15.3 kpsi. The change in diameter introduces a stress conce..
a fluid flow steadily in the x direction through a control volume. measurement indicates that to cause this flow the
a piston cylinder arrangement contains 1.0 kg of nitrogen gas initially at 100 kpa and 27c. the gas will be compressed
a piston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is
a particle travels along the path y2 4x with a constant speed of v 4ms. determine the x and y components of the
a piece of steel has a conductivity of k 15 wmk and a brick has k1wmk. how thick a steel wall will provide the same
The compression ratio of a cold air-standard Diesel cycle is 15. The state of the air at the beginning of the compression stroke is 15 °C, 100 kPa. The heat transfer in the combustion process is 1800 kJ/kg. Determine the following:
When a mass is attached to the end of the spring and allowed to come to rest,the vertical length of spring is 3.57 m. Calculate the elastic potential energy stored in the spring?
a heat pump with a coefficient of performance of 3.5 provides energy at an average rate of 70000 kjh to maintain a
R-134a enters the condenser of a refrigerator at 800kPa and 50oC at a rate of 0.018kg/s and leaves at 800kPa as a saturated liquid. It is known that the compressor consumes 1.2kW of electricity at this operating condition. Determine 1) heat rejection..
An aluminium bar is subjected to uniaxial tensile loading. If the lateral strain (perpendicular to the load direction) is measured to be -0.00025, determine the axial stress required to induce this strain (round to the nearest ksi).
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