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# How do you answer Fermi questions?

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###### Answered 2009-11-10 01:30:35

Fermi questions, aka order of magnitude questions ask you to express something numerically that can only be vaguely guesstimated. An example would be how many Golf balls does it take to fill the Atlantic Ocean? or how many quarters would it take to cover the surface of the Earth. Because the answers are simply a wild estimation, they are expressed by a power of ten. Say for example you calculated an answer to be 28374738, this would be the equivalent of 2.83 X 10^7, or in a Fermi question, expressed as an answer of 7. The easiest way to go about solving a Fermi question is by breaking it down to as many conversions that you are fairly certain of as possible.

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## Related Questions

I am sure there are lots of questions from Fermi, but I'll bet you mean the Fermi Paradox, which asks, "If there are ETs, where are they?" What he meant by this, is that the time to completely colonize the galaxy is very small compared to the age of the galaxy, so there should be ETs here if they exist at all!" So where are they--or alternatively what is wrong with this idea? For more on this please search "Fermi Paradox".

The spelling Fermi is an Italian surname, notably physicist Enrico Fermi (1901-1954).

Enrico Fermi had two siblings one sister and one brother: Maria and Giulio Fermi.

A fermi gas is a model from quantum mechanics first proposed by Fermi. A neutron star is said to be an example of a Fermi gas, and that would indeed be a dangerous place.

1 Fermi is a quadrillionth of a metre ie 1 Fermi = 10-12 metre.

Enrico Fermi was born on September 29, 1901.

enrico fermi made an atom model out of clay.

Enrico Fermi Institute was created in 1945.

Enrico Fermi died of stomach cancer in the year of 1954.

The Fermi Level is an energy that pertains to electrons in semi conductor.

1 fermi = 1 quadrillionth of a metre.

Well, according to the answer on a practice Fermi questions test, there is 10^17 electrons in one liter of water

The name of the chemical element fermium is derived from the name of the Italian physicist Enrico Fermi. Enrico Fermi contributed to the creation of the first nuclear reactor in Chicago, 1942; also Fermi was a Nobel prize laureate.

Enrico Fermi died on November 28, 1954 at the age of 53.

Fermi, a physicist, is known mainly for his work on the first nuclear reactor.

Enrico Fermi High School was created in 1971.

A fermi is a unit of length - 1x10-15 m or a femtometre. Used in nuclear physics, as it is approximately the diameter of a proton. Named after the physicist Enrico Fermi.

Enrico Fermi was not credited with the discovery of any chemical element.

Enrico Fermi died on November 28, 1954 at the age of 53.

Fermi Paradox - album - was created on 2002-10-15.

The Fermi Paradox Is Our Business Model was created on 2010-08-11.

The motto of Enrico Fermi High School is 'Responsible Citizens-Lifelong Learners'.

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