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From Problem 1.71 consider the wire leads connecting the transistor to the circuit board. The leads are of thermal conductivity k, thickness t. width w, and length L. One end of a lead is maintained at a temperature Tc corresponding to the transistor case, while the other end assumes the temperature 0, of the circuit board. During steady-state operation current flow through the leads provides for uniform volumetric heating in the amount q, while there is convection cooling to air that is at T8 and maintains a convection coefficient h.
(a) Derive an equation from which the temperature distribution in a wire lead may be determined. List all pertinent assumptions.
(b) Determine the temperature distribution in a wire lead, expressing your results in terms of the prescribed variables.
Explain what caused the balloon to move in terms of Newton's Third Law. What is the force pair in this experiment? Draw a Free Body Diagram (FBD) to represent the (unbalanced) forces on the balloon/straw combination
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Identify three of the most environmentally negative impacts of the Industrial Revolution
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