I don't understand reciprocal second s-1 and the exponent change

Chemistry
Tutor: None Selected Time limit: 1 Day

May 3rd, 2015

-1 simply means waves per second. ill have to look into the exponents inbox me

May 3rd, 2015

the -1 takes 1 sec away from the answer. so 8- (-7)= 8+7=15-1=14

May 3rd, 2015

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May 3rd, 2015
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May 3rd, 2015
May 30th, 2017
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