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Steel train rails are laid in 12m long segments placed end to end. The rails are laid on a winter day when their temperature is -2.0 degrees celsius
A.) How many space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 33 degrees celsius?
B.) If the rails are originally laid in contact. what is the stress in them on a summer day when their temperature is 33 degrees celsius?
Nonrenewable energy means sustainable energy, and a sustainable energy future is one that does not include significant dependence on fossil fuels.
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