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Question

The energy equivalent of 0.5g of a substance is _________.


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Solution

Step 1 Given:

Mass of the substance is m=0.5g=0.5×10-3Kg;

Speed of the light is c=3×108ms.

Step 2 Formula used:

The energy equivalent of the particular mass is E=mc2.

Step 3 Calculating the energy equivalent:

E=0.5×10-3×3×1082E=4.5×1013J

Hence, The energy equivalent of 0.5g of a substance is 4.5×1013J.


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