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30-Sep-2017 11:51

) In the case of your question about the speed of the Earth around the Sun, there isn't really a more 'precise' answer. They are described by their 'eccentricity', which tells us how flattened they are.

The only approximation I did in the calculation I sent you is assuming that the orbit of the Earth is circular. One of Kepler's laws describing planetary motions states that all orbits are ellipses. The eccentricity of an ellipse is a number that varies between 0 and 1, 0 being a perfect circle, and close to 1 being a very flattened ellipse.

Now if you want to calculate the speed of the Earth on its orbit without assuming it is a circle, it is another ball game!

First of all, I cannot give you a precise answer, because the speed of the Earth changes all the time as the Earth moves around the Sun.

It turns out that the orbit of the Earth right now has an eccentricity of about 0.017.

And as for the average Earth-Sun distance, the true value changes slightly over time due to gravitational perturbations from the other planets, so there really isn't much point in using a more precise value than the one given above.When it comes to dating, Chinese men are most interested in what women look like, while women want to know about a man’s income.The next consideration is a prospective partner’s profession: primary-school teachers and nurses are in high demand among men, while women favour men in IT or finance – areas men least want their partner to be working in.En Español | The minute you turn on a new personal computer, it starts slowing down.

Like any machine that’s exposed to the elements, things start to gum up the works. Ads are everywhere for services that claim to “clean up” and “speed up” your PC — for a fee.Subsequently, when you start up your computer it takes a little extra time to “read” each breadcrumb, slowing things down. In Windows, defragment your hard drive every few months — but don’t do it too often, because it actually adds wear and tear to your hard drive. If you’re getting less than 75 percent of the speed promised by your provider, call customer service to investigate.



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