Which of the following statements is accurate? A. Energy out of a system is always MORE than the energy input B. Energy within

Question

Which of the following statements is accurate? 
A. Energy out of a system is always MORE than the energy input 
B. Energy within the system is always MORE than the energy input 
C. Useful energy out of a system is always less than the energy input of that system.

Kunduz · Accepted Answer

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