1–18C

1–18C For a system to be in thermodynamic equilibrium,
do the temperature and the pressure have to be the same
everywhere?
ANS
1-18CFor a systemto be in thermodynamic equilibrium, the temperature has to be the same throughout
butthe pressure does not. However, there should be no unbalanced pressure forces present. The increasing
pressure withdepth ina fluid, for example, should be balanced byincreasing weight.