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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 mass and the unit of mass?

Mass is a measure of the amount of matter in an object. The SI unit is a kilogram.

How many inches are in 200 miles?

12 inches = 1 foot

5280 feet = 1 mile

1. Convert miles to feet by multiplying by 5,280.

200 x 5,280 = 1,056,000 ft

2. Convert feet to inches by x by 12

1,056,000 x 12 = 12,672,000 inches in 200 miles!

What number is 7 000 000 000 000 945 175 742?

Seven sextillion nine hundred and forty five million one hundred and seventy five thousand seven hundred and forty two.

How do you remember number of pi?

You cannot remember it exactly because it has infinitely many digits, You are rarely required to know it to more than a few digits. 3.14 or, if you really want to be accurate, 3.14159 is good enough.

Remember that if you are trying to work out the area of a circle, the radius or diameter is likely to be accurate to at most 3 significant figures. So any gain from using a very accurate value of pi will be lost when the radius is only approximate.

What is 12000 000 000 billion in kilometers?

The answer will epend on the units used for the given measure. Is it in kilometres, micrometres, nanometres or light years? Since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.



The answer will epend on the units used for the given measure. Is it in kilometres, micrometres, nanometres or light years? Since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.



The answer will epend on the units used for the given measure. Is it in kilometres, micrometres, nanometres or light years? Since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.



The answer will epend on the units used for the given measure. Is it in kilometres, micrometres, nanometres or light years? Since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.

Why is the speed of light constant if it is constant?

It is constant, because it's determined by the electrical properties of the

vacuum or material stuff it's traveling through. So as long as the electrical

permittivity and magnetic permeability of the medium don't change, the

speed that they determine doesn't either.

The constant speed of light "C" (for example in E=mC2) is the speed of light in a vacuum. Light in other mediums, such as glass, moves slower and creates such effects as refraction.

What is being measured of avogadro's number?

One mole of atoms. The number of Carbon-12 atoms that are required to form a block that weighs precisely 12 grams. Roughly 6.02x10^23 atoms.

What is the full form of googol?

10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.

OR!

10^100.

It is 1 followed by 100 zeros