SSC
PHYSICS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The internal energy of a system is equal to ____
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____ the total energy that its particles have in their kinetic energy stores.
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____ the total energy that its particles have in their potential energy stores.
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____ the total energy that its particles have in their kinetic and potential energy stores.
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None of the above
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Explanation:
Detailed explanation-1: -The total energy E of a system is simply the sum of its internal, kinetic, an potential energies: E=me=m(u+ke+pe)=U+KE+PE.
Detailed explanation-2: -If the potential and kinetic energies of a system are neglected, internal energy is the only form of energy present. Hence, the total energy equals the internal energy, and Equation 6-12 reduces to E=U.
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