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An example of a negative externality is
Friction Surfaces
Areas where two materials come into contact and movement between them is resisted by friction, important in braking systems and clutches.
Governor
A device used to regulate the speed of machinery by automatically adjusting the supply of fuel, steam, or other power source.
Brake Chambers
Components in air brake systems, primarily in heavy vehicles, where pressurized air is converted into mechanical force to apply the brakes.
Q2: Significant problems with measuring real GDP and
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Q77: The reaction of butane with oxygen is