What is the energy equivalent of an object with a mass of 1.05 g?

Use Einstein’s equation E = mc², converting 1.05 g to 0.00105 kg. With c ≈ 3.00 × 10⁸ m/s, E = (0.00105)(3.00 × 10⁸)² = 9.45 × 10¹³ J. So the energy equivalent is 9.45 × 10¹³ J, choice C.

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