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2 \times 3
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a_{i-1}
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Comments
I blindly accepted your answer and got it wrong, of course. I realized afterwards that the dimensions must be coulomb-meters (which is how I would state it -- somehow meter-coulombs (m C) sounds funny to me).
Hang on... First, the question explicitly hasa dot between m & C on the cahllenge page, suggesting a multiplication. Also, the SI units of an Electric Dipole Moment is, according to the page on wikipedia that you have referred to, the coulomb-meter (http://en.wikipedia.org/wiki/Electricdipolemoment). This also seems to be dimensionally correct, based on the equation stated in the challenge. What have I missed?
Easy Math Editor
This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.
When posting on Brilliant:
*italics*
or_italics_
**bold**
or__bold__
paragraph 1
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[example link](https://brilliant.org)
> This is a quote
\(
...\)
or\[
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to ensure proper formatting.2 \times 3
2^{34}
a_{i-1}
\frac{2}{3}
\sqrt{2}
\sum_{i=1}^3
\sin \theta
\boxed{123}
Comments
I blindly accepted your answer and got it wrong, of course. I realized afterwards that the dimensions must be coulomb-meters (which is how I would state it -- somehow meter-coulombs (m C) sounds funny to me).
Yes, the answer is desired in millicoulombs.
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Hang on... First, the question explicitly hasa dot between m & C on the cahllenge page, suggesting a multiplication. Also, the SI units of an Electric Dipole Moment is, according to the page on wikipedia that you have referred to, the coulomb-meter (http://en.wikipedia.org/wiki/Electricdipolemoment). This also seems to be dimensionally correct, based on the equation stated in the challenge. What have I missed?
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You have missed nothing.
I was sorely mistaken, and the correct unit is in fact the coulomb-meter.