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Sagot :
Thermal expansion explains that the biggest door in summer therefore explains why Andrea has trouble closing it
Parameter
* the material of the aluminum door
*the temperature in summer is higher
To find
* why whoever closes the door.
The thermal expansion in the phenomenon that explains the increase in dimensions of the body when heating them, this is an effect of the greater energy in the bonds of molecules and atoms, macroscopically it can be represented by the expression
ΔL = α L₀ ΔT
where ΔL in the change in length, α is the coefficient of thermal expansion for aluminum is alpha α = 2.4 10⁻⁶ C⁻¹, ΔT is the change in temperature
For bodies with two dimensions, if the change in temperature is not too great, it can be approximated
ΔA= 2α A₀ ΔT
where ΔA is the change in area and A₀ is the initial area.
With this expression we can see that the change in temperature between winter and summer is positive and has typical values of less than ΔT=80ºC, in addition the thermal expansion coefficient of aluminum is positive, which is why we have an increase in the door area .
The Thermal expansion explain as the door is larger, it may have to fit with the space to close it, therefore the expansion ends of the body explains that it is more difficult to close the door in summer
Learn more about thermal expansion here: brainly.com/question/18717902
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