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To how many significant figures should each answer be rounded?
(6.626 x 10-34 J·s) (2.9979 x 108 m/s)
equation A:
= 4.524848610478 x 10-19 J(unrounded)
4.390 x 10-7 m
After rounding, the answer to equation A should have
O 5 significant figures.
O 1 significant figure.
3 significant figures.
O 4 significant figures.
O2 significant figures.