Which can happen when energy is transferred from one system to another? A. New energy is created. B. Some energy is destroyed. C. The energy changes form. D. The energy changes into mass.
Question
Which can happen when energy is transferred from one system to another? A. New energy is created. B. Some energy is destroyed. C. The energy changes form. D. The energy changes into mass.
Solution
The correct answer is C. The energy changes form. According to the law of conservation of energy, energy cannot be created or destroyed, but it can change from one form to another. This happens when energy is transferred from one system to another. For example, electrical energy can be converted into light and heat energy in a light bulb. So, new energy is not created (option A is incorrect) and some energy is not destroyed (option B is incorrect). Energy also does not change into mass (option D is incorrect), according to Einstein's theory of relativity, energy and mass are interchangeable under very specific conditions, but not in general energy transfers.
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