Question

conservation of energy means

• energy spent in short time
• energy spent for long time
• energy can never be the same
• total energy remains constant before and after the process.

nivedita biswas (raleigh) — + kahoot.it game pin 83379

Explanation:

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. So, the total energy of a closed system remains constant before and after a process. The other options are incorrect: "Energy spent in short time" relates to power, "Energy spent for long time" is not a definition of energy conservation, and "Energy can never be the same" contradicts the conservation law.

Answer:

Green option: Total energy remains constant before and after the process.