Calculate the the time distance with the given graph.
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Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

The air that we breath is made mostly of which gaseous molecule

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank