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Hi I have two questions the first one is: can I understand the general relativity in simple way? The second question is: How can I calculate the mass of galaxy if I have the redshift of it?

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Only YOU know what you are able to understand. Curl up with a good book on General Relativity/ Cosmology and start reading. If you understand most of the introduction then you are mentally fit to read the rest.

As to the red shift and mass distribution. Scientists are still working on it.
Here is quotation from the abstract of a PhD thesis that may convince to join in the fun.
"Gravitational redshift offers a new approach to studying the mass distributions of galaxies and clusters that requires many fewer assumptions regarding the underlying physics than many of the current methods. Unfortunately, it also suffers from a number of potential setbacks. Recent advances in instrument technology, combined with the careful selection of suitable targets should allow gravitational redshift to become a viable tool for studying the nature and distribution of dark matter."

Here is the link to the thesis.

By the way, your calculator is of no use to you in this matter.

Posted on Aug 23, 2010

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Posted on Jan 02, 2017

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I hear you. The problem is that there a lot of facts and algorithms to remember (approximately) and a human memory is limited. Why bother spend half an hour doing what a calculator can do in a fraction of a second. Personal prowess is a nice thing for show, but if one has to be efficient, a powerful HP calculator is more appropriated than a genius with the Japanese abacus.

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Two thousand one hundred and twenty frequent business travelers are asked which midwestern city they prefer: Indianapolis, Saint Louis, Chicago, or Milwaukee. 185 liked Indianapolis best, 420 liked Saint...


Hi Omar / Anonymous

2120 total passengers. Subtracting other 3 from 2120 leaves 115 favoring Milwaukee. Divide each number by 2120 for fractional frequencies: Indiana 0.087 SL 0.198 CHI 0.660, MIL 0.054.

For relative Frequency, use the smallest group (Milwaukee) as the base and express the others as multiples of 115. The relative frequency then is MIL 1.000:1, IND (185/115) = 1.609:1, SL(420/115) = 3.652:1 and CHI (1400/115) == 12.174:1

All that said, I'll make a non-accusatory general observation that Fixya isn't and would not be an appropriate place to hunt for answers to homework problems. In the event that this oddly specific question has nothing to do with homework, please ignore the above. If it is homework, please observe the methods used and then go reproduce them yourself to make sore you understand the process and can do it.
Cheers
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How do i find grouped data in L1 and L2 on ti 82


I am not sure I understand but if it the same problem as in your other posted question, here is what I wrote.

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And we cannot understand it either because we have no idea what it relates to?. Would you care to ask THE question?

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PUTTY GUN 3.5nozzel for Glue + S/Putty FREE Delivery in Australia $86.95 PHOTO of GUN


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9c03c19.jpg
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Hi,
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88b596f.png
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Hope it helps.
Thank you for using FixYa.

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NO PROBLEM. JUST TRYING TO UNDERSTAND THE


Hi,
Here is instruction from the user's manual. the manual link is below, for downloading:

TIME CALCULATION KEY:
• Utilise this key to enter hours and minutes in time
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• Press this key after entering an hour or minute value.
(There is no need to press this key when entering a second
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• When this key is pressed, if the preceding entry is in any of
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Minute: 0 to 99 (An entry above 60 is rounded up to one
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• A second value is set when it is entered in the following
range:
Second: 0 to 99 (An entry above 60 is rounded up to one
minute. If a value of more than 3 digits is
entered, only the least significant two digits take
effect.)

http://www.sharpusa.com/files/cal_man_EL1197PIII.pdf

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