江南体育网页版

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    $\begingroup$ I have a feeling that this question would most likely be sent to WA, not us. $\endgroup$
    –Gimelist
    Apr 22, 2019 at 10:30
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    $\begingroup$ @Gimelist I think individual users should speak for themselves. I also have a strong hunch the answer lies within item 3;EMG2008 12th order. The question is tagged withgravityandmodelsand so I think gravity model should be on-topic here. Let's give it a few days and see what happens? $\endgroup$
    –uhoh
    Apr 22, 2019 at 11:12
  • $\begingroup$ I agree that this is off topic, and have flagged it as such. For the future, I think it's also helpful to limit each post to a single question. $\endgroup$
    –g.z.
    Apr 30, 2019 at 1:23
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    $\begingroup$ @g.z. If it was a random site I can understand, but Wolfram Alpha is a distinctly reputable site and has probably implementedEMG2008 12th orderproperly, which means that the question is about gravity models of Earth which is on-topic. I've been pretty good at keeping my ~1,900 Stack Exchange questions narrowly focused. The four indexed items are so closely related thatin this particular caseit would be unwieldily to ask them as four separate questions, linking each to the other three. $\endgroup$
    –uhoh
    Apr 30, 2019 at 2:29
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    $\begingroup$ @uhoh: I just retracted the close vote. I've been playing with WA & obtaining g for various land based sites with Chicago's latitude (N & S): 41.7N & 47E, 125E; 41.7S & 72W, 145E, 173E. Chicago has an elev of 175 m (your WA data). In Chile, 41.7S, 72W the elev is 200 m & the values for g are very similar: 9.8188 v 9.81877. Also 41.7S, 145E, elev 144 m has a g of 9.81932. WA might be using a formula based on a whole world "line of best fit analysis" derived from EMG2008 12th order. $\endgroup$
    –Fred
    Apr 30, 2019 at 14:39

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