The energy equivalent to a substance of mass | vedclass

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(B) According to Einstein's mass-energy equivalence principle, the energy $E$ equivalent to a mass $m$ is given by the formula $E = mc^2$, where $c$ i

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$9 	imes 10^{13} \,J$

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(B) According to Einstein's mass-energy equivalence principle, the energy $E$ equivalent to a mass $m$ is given by the formula $E = mc^2$, where $c$ is the speed of light in a vacuum.Given mass $m = 1 \,g = 1 	imes 10^{-3} \,kg$.The speed of light $c = 3 	imes 10^8 \,m/s$.Substituting these values into the equation:$E = (1 	imes 10^{-3} \,kg) 	imes (3 	imes 10^8 \,m/s)^2$$E = 1 	imes 10^{-3} 	imes 9 	imes 10^{16} \,J$$E = 9 	imes 10^{13} \,J$.Therefore, the energy equivalent to a substance of mass $1 \,g$ is $9 	imes 10^{13} \,J$.

The energy equivalent to a substance of mass $1 \,g$ is

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