Question: To how many significant digits figures should each answer be rounded? Equation A: (6.626x10^-34 J.s)(2.9979x10^8 m/s)/4.390x10^-7m=4.524848610478x10^-19 J (unrounded)

To how many significant digits figures should each answer be rounded? Equation A: (6.626x10^-34 J.s)(2.9979x10^8 m/s)/4.390x10^-7m=4.524848610478x10^-19 J (unrounded)

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