The exercise:(adsbygoogle = window.adsbygoogle || []).push({});

The answer given in the book: Assuming the length of the day uniformly increases by 0.0010s per century, calculate the cumulative effect on the measure of time over 20 centuries.

My initial thought was 0.001 x 20, but that's apparently wrong. I think I'm missing something basic. 2.1 hours

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# Simple math problem, I guess?

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