Write the result in scientific notation.?
Answer:
In scientific notation we have to remember significant figures.
we have 6 x 10^12 that has only one significant figure so the result must have only one signficant figure :
(6 x 10^12 )( 3.2 x 10^8) = 2 x 10^21
(1.6 x 10^7)(3 x 10^2 ) = 5 x 10^9
2 x 10^21 / 5 x 10^9 = 4 x 10^11
With scientific notation, you add exponents when multiplying, and subtract them when dividing.
6 x 10^12 * 2.2 x 10^8 = 13.2 x 10^20
1.6 x 10^7 * 3 x 10^2 = 3.2 x 10^9
13.2 x 10^20/3.2 x 10^9 = 4.125 x 10^11
Yeah, what he said.
Ron.
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