Question
A mass of 50 g is completely converted into energy. What is the energy that will be obtained when such a conversion takes place?
Question by OpenStax is licensed under CC BY 4.0
Final Answer
4.5×1015 J4.5\times 10^{15}\textrm{ J}

Solution video

OpenStax College Physics for AP® Courses, Chapter 28, Problem 4 (Test Prep for AP® Courses)

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Video Transcript
This is College Physics Answers with Shaun Dychko. 50 grams of mass is going to be converted completely into energy and the formula to describe how much energy is mc squared. So the mass is 50 grams, we convert that into kilograms by multiplying by 1 kilogram for every 1000 grams then multiply by the speed of light squared and this is 4.5 times 10 to the 15 joules of energy will be obtained.