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Mathematical Constants

Intriguing, ubiquitous, and at times mysterious, numerical constants set the allowable limits for all universal phenomena. Whether your questions involves π, Avogadro's number, Planck's constant, the atomic mass unit, or any of the other multitudes of immutable numbers used in science, this is the category where they should be asked.

2,332 Questions

What is Boltzman's constant?

The Boltzman's constant is the physical constant relating to temperature to energy.

How many decillions are in 1 googol?

In researching the answer, we found the following definitions on the www :

1 decillion = 1033

1 googol = 10100

So the number of decillion in 1 googol is

10100 / 1033 = 10(100-33) = 1067

We couldn't find a name for 1067. Apparently it doesn't come up very often.

Do pi's number peridodic?

They may be. But as far as pi has been carried out until now ... 2.5 trillion decimal places

claimed in 2009 by a team in Japan ... no repeating digits have been found yet.

What is the general number for pi?

The answer is 3.141592654, often shortened to 3.14.

What is the use of finding number of tiles in daily life?

Well just say your wife/husband wants you to tile the bathroom. Instead of buying a random amount of tiles you can simply measure the area you want tiled to figure out the exact number of tiles needed. This is a pretty literal real life application though. Basically the tiles per certain area exercise also has the effect of teaching one how to deduce how many units [the tiles] will fit into a certain space [the area] this has all sorts of real world applications to do with problem solving if you really think about it and even though when I was in school I found these kinds of exercises pointless I often use the things I learnt in real life now :D

How do you know how to answer a question of female partner about herself truthfully without causing any annoyance at all?

A truthful answer will many times hurt the receiver's feelings. If the truth you need to convey is negative, be as honest and as gentle as possible AND offer a solutuion if you can.

What are the importance of number pi?

Your pie wouldn't be a circle, it'd be some random shape. god bless the greeks.

How would you solve an imaginary number with -31 as its exponent?

The following discussion is for complex numbers; this includes (pure) imaginary numbers as a special case. This type of powers (a complex number to the power of a real number) are very simple if you write the complex number in polar coordinates, specifying an absolute value and an angle. Raise the absolute value to the specified power, and multiply the angle by the power.

Example (writing on a piece of paper is clearer; it is difficult to represent some of the symbols here):

(1 + i)6 = [(square root of 2) angle (45 degrees)]

Square root of 2 to the power 6 is 8.

45 degrees x 6 = 270 degrees, which is the same as minus 90 degrees.

The result is, then, 8 at an angle of -90 degrees. Converting this back to rectangular coordinates, this is equal to -8i.

What is a googol and how many zeros are in it?

A googol is 10100 , that is 10*10*10*...*10 (one hundred lots of ten). It has 100 0s.

How do I do this problem 9--2x-5?

if u said 9=2x-5 then add 5 to both sides so u get: 14=2x. then divide both sides by 2 so u get: x=7

After which decimal in the number pi is there no repetition?

Although it hasn't been found statically speaking if you keep doing something forever the most unlikely out comes will occur so if pi goes on forever the out come of repeating becomes more and more unlikely but will eventually be forced to occur.

What is pi in an explanatory form not the number form?

pi is the ratio between the circumference of a circle and it's diameter.

If you take the circumference of any circle, and divide it by that same circle's diameter, the resulting number will be pi.

How do you create an illustration of golden ratio?

If you are using a program, i would recommend looking at
http://www.mathworks.com/moler/chapters.html
in the intro to matlab section they have a code to illustrate the golden ratio

if by hand, draw a rectangle with sides 1 and (1+sqrt(5))/2 and draw an extra line at the 1 mark on the longer side.