Internal energy changes that do not register on a thermometer are due to changes in the energy of the particles.

The correct answer is potential energy.

Explanation:

Internal energy is defined as the energy associated with the disordered motion of the molecules. The potential energy is associated with the inter molecules attractive forces in liquid and solid.

In polyatomic gases, there is vibrational kinetic energy and the translational kinetic energy.

Temperature is the measure of average kinetic energy.

Therefore, internal energy changes that do not register on a thermometer are due to changes in the potential energy of the particles.

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

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