The internal energy of a substance is defined as   A)…

The internal energy of a substance is defined as   A) the potential energy of all particles which make up the substance. B) the kinetic energy of all particles which make up the substance. C) the sum of the potential and kinetic energy of all particles which make up the substance.     D) the thermal energy of all particles which make up the substance. E) the chemical energy of all particles which make up the substance.

A nurse, who is caring for an infant with a head injury, rep…

A nurse, who is caring for an infant with a head injury, reports an incident of suspected child abuse. One of the parents of the child becomes upset and demands to know the reason for the nurse’s action. Which of the following responses by the nurse is appropriate?