The sum of all forms of molecular energies (kinetic and potential) of a substance is termed as:
Correct answer: C. Internal energy
- A. Elastic energy
- B. Absolute energy
- C. Internal energy
- D. Heat energy
Explanation
Elastic energy is a form of potential energy. Absolute energy does not exist. By definition, Internal energy is the sum of total kinetic and potential energy as defined in 1st law of thermodynamics.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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