Which Best Describes the First Law of Thermodynamics

question 14

Multiple Choice

Which best describes the first law of thermodynamics?

• A)Energy is neither created nor destroyed,but it can change from one energy form to another
• B)Energy can be created from matter or used to produce matter
• C)Useful energy is lost as heat whenever an energy transfer occurs
• D)Energy transfers are always 100% efficient in changing energy from one form to another

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