Two students each build a piece of scientific equipment that uses a 655 mm-long metal rod. One student uses a brass rod, the other an invar rod. If the temperature increases by C, how much more does the brass rod expand than the invar rod?
The answer is
Two students each build a piece of scientific equipment that
uses a 655-mm-long metal rod.
The process of thermal expansion occurs when objects are heated as well as expanded. In case the temperature of an object changes through , as well as length changes through and the length's fractional changes are effective to the temperature's change .
The equation (18.8) in the form is
In this case, is the coefficient. Table 18.4 effectively gives the coefficient expression of linear for common materials, for instance
The equation for is
In this case, L is the initial length. The temperature effectively changes through for brass
For Brass, plug the values of into equation (2) in order to get
plug the values of into equation (2) in order to get
The calculation depicted the brass changes through a larger value of invar and the difference is
Therefore, the answer is
On average, each person in the industrialized world is responsible for the emission of of carbon dioxide () every year. This includes that you generate directly, by burning fossil fuels to operate your car or your furnace, as well as generated on your behalf by electric generating stations and manufacturing plants. is a greenhouse gas that contributes to global warming. If you were to store your yearly emissions in a cube at STP, how long would each edge of the cube be?
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