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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
Who developed the standard unit mass?
The standard unit of mass, the kilogram, was originally defined in 1795 based on the mass of a specific prototype made of platinum and iridium, known as the "International Prototype of the Kilogram." This prototype was maintained by the International Bureau of Weights and Measures (BIPM) in France. In 2019, the definition of the kilogram was redefined in terms of the Planck constant, making it based on fundamental physical constants rather than a physical object.
What does it mean to say that the speed of light is a constant?
Saying that the speed of light is a constant means that light travels at the same speed, approximately 299,792 kilometers per second (or about 186,282 miles per second), in a vacuum, regardless of the observer's motion or the source of the light. This constancy is a fundamental principle of Einstein's theory of relativity, influencing our understanding of space, time, and the structure of the universe. It implies that the laws of physics are the same for all observers, leading to phenomena like time dilation and length contraction.
What is the solution to the jock tax in yummymath.com?
The solution to the jock tax problem on yummymath.com typically involves calculating the taxes owed by athletes based on the games they play in different cities, each with its own tax rates. Athletes must determine the portion of their income attributable to each location and apply the respective tax rates to find the total tax burden. The jock tax underscores the complexities of taxation for professional athletes who earn income across multiple jurisdictions. For precise calculations, one would need specific income figures and tax rates for each city involved.
How do you calculate nmr j value for quartet and for multiple?
The J value in NMR spectroscopy represents the coupling constant between nuclei and is measured in hertz (Hz). For a quartet, you can determine the J value by measuring the distance between the peaks of the quartet; this distance corresponds to the J value. For multiplets, you can analyze the spacing between the peaks to identify the couplings involved, often requiring additional analysis of the splitting patterns to extract the J values for each coupling interaction. In both cases, ensure that the peaks are well-resolved for accurate measurements.
What is the difference between a symbolic and a literal constant?
A symbolic constant is a variable that is assigned a fixed value that cannot be changed during the program's execution, often represented by a name that conveys its meaning (e.g., PI = 3.14). In contrast, a literal constant is a fixed value directly embedded in the code, such as 3.14 or "Hello", which does not have an associated name. Symbolic constants improve code readability and maintainability, while literal constants provide immediate values without the need for additional identifiers.
5 ways that we use rounding off in our daily life?
Rounding off is commonly used in budgeting to simplify financial calculations, making it easier to track expenses. In cooking, we often round measurements for ingredients to ensure recipes are easier to follow. When estimating travel time, rounding off distance or speed helps us quickly assess how long it will take to reach a destination. Additionally, rounding is frequently applied in statistics and data reporting to present information in a more digestible format.
What is the foot size of a 1 year old child?
The foot size of a 1-year-old child typically ranges from about 3 to 5 in U.S. children's shoe sizes, which corresponds to approximately 4 to 5.5 inches in length. However, foot size can vary significantly among children due to factors like genetics and growth patterns. It's best to measure the child's foot for an accurate fit when purchasing shoes.
How do you find the mass of one unit cell?
To find the mass of one unit cell, first determine the molar mass of the substance. Then, calculate the volume of the unit cell using its dimensions (length, width, height) or lattice parameters. Next, find the density of the material, and use the formula: mass = density × volume. Finally, divide the calculated mass by Avogadro's number to obtain the mass of a single unit cell.
Sodium's atomic mass is 22.99 atomic mass units (amu).
What was a secret society of mathematicians that studied geometric ratios such as the golden ratio?
The secret society of mathematicians often associated with the study of geometric ratios, including the golden ratio, is the Pythagorean Brotherhood. Founded by the ancient Greek philosopher Pythagoras in the 6th century BCE, this group not only explored mathematics but also delved into philosophy, music, and cosmology. They believed that numbers and their relationships were fundamental to understanding the universe, and they maintained a level of secrecy about their teachings and discoveries. The Pythagoreans famously linked mathematical concepts to aesthetics and natural phenomena, particularly through their study of ratios and proportions.
How do you calculate j value for triplet of doublet?
To calculate the j value for a triplet of doublets in NMR spectroscopy, you first need to identify the coupling constants involved. A triplet of doublets arises from a proton that is coupled to two neighboring protons, resulting in two distinct doublets. The j value is determined by measuring the distance between the peaks in the doublets (the separation between the peaks) and the distance between the doublets themselves. Typically, you would report the coupling constants (j values) for the two sets of doublets separately, reflecting the different interactions with each neighboring proton.
What is the application of beta and gamma function in mechanical engineering?
In mechanical engineering, the beta and gamma functions are used in various applications, particularly in the analysis of complex systems and materials. The gamma function, for instance, is instrumental in calculating probabilities and statistical distributions, which can be essential in reliability engineering and quality control. The beta function, on the other hand, often appears in problems involving fluid mechanics and thermodynamics, helping to evaluate integrals related to beam deflections and stress distributions. Together, these functions facilitate the modeling and analysis of physical phenomena, aiding engineers in optimizing designs and predicting system behaviors.
Why dielectric constant has no units?
The dielectric constant, also known as relative permittivity, is a dimensionless quantity that represents the ratio of a material's permittivity to the permittivity of free space (vacuum). Since it is defined as a ratio of two similar quantities (both having units of capacitance per unit length), the units cancel out, resulting in a value without units. This property allows for easier comparisons between different materials' electrical characteristics.
What is the volume of a liquid in science?
In science, the volume of a liquid refers to the amount of space that the liquid occupies. It is typically measured in units such as liters (L), milliliters (mL), or cubic centimeters (cm³). Volume can be determined using various methods, including displacement of water for irregular shapes or using graduated containers for regular shapes. Accurate measurement of liquid volume is crucial in experiments and applications across various scientific fields.
Do relative permittivity and dielectric constant of a medium imply different physical qantities?
Relative permittivity and dielectric constant are often used interchangeably, but they can imply different contexts. Relative permittivity (ε_r) is a dimensionless measure of a material's ability to store electrical energy in an electric field, relative to the vacuum. The term "dielectric constant" traditionally refers to this same quantity, but it can sometimes be used more loosely to describe the material's overall insulating properties. Thus, while they represent similar concepts, the terminology can depend on the specific physical context being discussed.
What is the full number of pi 3.14?
"pi = 3.141592654 .......... then possibly to infinity" is definitely correct.
Well actually its 3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 8214808651 3282306647 0938446095 5058223172 5359408128 4811174502 8410270193 8521105559 6446229489 5493038196 4428810975 6659334461 2847564823 3786783165 2712019091 4564856692 3460348610 4543266482 1339360726 0249141273 7245870066 0631558817 4881520920 9628292540 9171536436 7892590360 0113305305 4882046652 1384146951 9415116094 3305727036 5759591953 0921861173 8193261179 3105118548 0744623799 6274956735 1885752724 8912279381 8301194912 9833673362 4406566430 8602139494 6395224737 1907021798 6094370277 0539217176 2931767523 8467481846 7669405132 0005681271 4526356082 7785771342 7577896091 7363717872 1468440901 2249534301 4654958537 1050792279 6892589235 4201995611 2129021960 8640344181 5981362977 4771309960 5187072113 4
999999
837 2978049951 0597317328 1609631859 5024459455 3469083026 4252230825 3344685035 2619311881 7101000313 7838752886 5875332083 8142061717 7669147303 5982534904 2875546873 1159562863 8823537875 9375195778 1857780532 1712268066 1300192787 6611195909 2164201989 3809525720 1065485863 2788659361 5338182796 8230301952 0353018529 6899577362 2599413891 2497217752 8347913151 5574857242 4541506959
What is the full number of pi?
PI is alot more than that 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609392801490329810923874918230491871092834788192192348392102993847747382902192834012983492347387429438298349209102384098201283740192871430972190837498234783920193284720198374802918437092817408120394872093847021983740921834709128347019238479213847192487012938478347839209184701928374912837483838382098247972103810341734970932487938749293109238479829013984912381279384792387
but i remember 3.141592654
What is nitrogen's atomic mass?
Millions of tons. !!!!!
Nitrogen forms 79% of the world wide atmosphere.
The total mass of the atmosphere is estimated to be 5.15 x 10^(18) kgs.
[5,150,000,000,000,000,000 kgs].
So 79 % of this mass is 4.0685 x 10^(18) kgs of nitrgoen .
Why is division by zero is undefined or not allowed?
Any non-zero number divided by zero is infinity (positive or negative), but your calculator may give an error. Try it with a very small number such as 0.000001, as you make it smaller the result will become larger. The reason is that for a given number, you can put 0 into it as many times as you want - an infinite amount.
However, this will give us many problems with division. For any other number, division has very useful properties. If we have some unknown number called 'x', and we have an equation that says: x/3 = 5/3, then we can deduce that x=5. Another example: x/4 = 7/4. We can deduce that x=7. But when we allow division by zero, this property is lost: 3/0 = infinity = 4/0, but 3 is not equal to 4. We also lose many other useful properties if we allow division by zero. However, we do almost allow division by zero. This is done by taking what is known as a limit as the divisor, x, tends to zero (we write x→0), and this is an integral part of calculus.
0/0 is a special case of division by zero. Notice that for any non-zero number, let's call it 'y', we get y/y = 1. But we say that 0/0 is undefined, or indeterminate. We can still take limits when something looks like it might be equal to 0/0. For example, the limit of sine(x)/x as x→0. We know that sine(x) = 0 when x=0, but it can be proven that sine(x)/x →1 as x→0. But we can also prove that x2/x → 0 as x→0. So the result is different depending of different situations.
Yes, 3.14 is an approximation of the mathematical constant pi (π), which represents the ratio of a circle's circumference to its diameter. Pi is an irrational number, meaning it cannot be expressed as a simple fraction, and its decimal representation goes on infinitely without repeating. While 3.14 is a commonly used approximation for pi, the actual value of pi is approximately 3.14159.
Often, in mathematical problems, you are asked to find out an unknown value. Towards that end, you are "given" some numbers to assist in that process.
Why is zero factorial equal to one?
n!/n = n!/n | reflexive property
(n)(n-1)(n-2).../n = n!/n | definition of factorial
(n-1)(n-2)... = n!/n | cancelling the common factor of n
(n-1)! = n!/n | definition of factorial
Notice that, in order for n! to be described as (n)(n-1)(n-2)... and proceed to be rewritten as (n-1)! after the n's cancel, the natural number n had to be greater than some natural number for (n-1) to be a factor in the factorial. This means that n must be at least 2, because if n were 1, (n-1) would not have been a factor of the factorial, and the proof would fail unless we assume that n is at least 2. So now you know that this rule cannot prove that 0! is 1 because 1 cannot be substituted into the rule because, as it stands, the rule is only valid for values of 2 or greater. The rule is valid for values of 1 or greater if it is assumed that 0! is 1, but that is what you are trying to prove.
What is the square root of pi?
The square root of the square root of the square root of something is called the 8th root. The 8th root of pi is approximately 1.15383506784999.
What is a googol times a googol written as a power of 10?
Well, honey, a googol times a googol is essentially 10 to the power of 200. In other words, that's a 1 followed by 200 zeros. So, if you ever need to impress someone with a ridiculously large number, there you go!
Using imaginary i simplify the square root of negative 48?
Oh, dude, imaginary numbers? Like, sure, let's do this. So, the square root of negative 48 can be simplified as 4i√3. It's like regular math, but with a little twist of imagination. So, there you have it, imaginary math for the win!
