The First Law of Thermodynamics
 

The First Law of Thermodynamics problem 4


A 1 m long iron rod weighing 0.1 kg is heated till its temperature increases by . In doing so, it lengthens by 1.3 mm and pushes away the object lying right next to it with a force of 2000 N. How much has the internal energy of the rod changed? The specific heat capacity of iron is 465 J/kg K.


 

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