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Use Einstein’s energy equation to solve the following problem. Recall that the speed of light is 3 × 108 m/s. If a 5.0-kg stone is completely converted to energy, what is its energy equivalent in joules? 4.5 × 10^17 J 1.5 × 10^10 J 1.5 × 10^9 J 4.5 × 10^15 J

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The kinetic energy is calculated through the equation,
                                    KE = mc²
where KE is kinetic energy, m is mass, and c is the masses. Substituting the known values,
                                   KE = (5 kg)(3 x 10^8)²
                                       KE = 4.5 x 10^17 J

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