# How do you answer Fermi questions?

## Answer

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.

### What are fermi 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… Read More

### How many electrons are there in one liter of water?

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

### How do you spell Fermi?

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

### Is Fermi Gas dangerous?

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.

### Did Enrico Fermi have siblings?

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

### 1 fermi is how many meters in standard form?

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

### Why was fermium named after Enrico Fermi?

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.

### What is the definition of fermi level?

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

### In science what is the definition of fermi?

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.

### What did Enrico Fermi discover?

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

### What did element did Enrico Fermi discover after neptunium?

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

### Why does the author of Enrico Fermi The 'Italian Navigator' compare Fermi to a ship's captain?

because he just does

### What Nobel Prize did Enrico Fermi win and when was it awarded?

Enrico Fermi won The Nobel Prize in Physics in 1939.

### When was The Fermi Paradox Is Our Business Model created?

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

### What is the motto of Enrico Fermi High School?

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

### How old is Enrico Fermi?

Enrico Fermi was born on September 29, 1901 and died on November 28, 1954. Enrico Fermi would have been 53 years old at the time of death or 113 years old today.

### What problem did Enrico Fermi solve?

Fermi was a nuclear physicist who solved many problems (for example he designed a nuclear reactor). In physics there are problems that are actually named Fermi problems. These problems involve estimating quantities that are impossible to calculate. Fermi was well known for his ability to solve problems for which he had little or no data. For example, Fermi estimated the strength of atomic bob from Trinity test very accurately by using distance that pieces of… Read More

### Effect of temperature on fermi level?

The Fermi level starts to change location when temperature reaches 300K as a room temperature and Fermi level will getting close to conduction band or valence band depending on energy band gap determines.

### What is fermi energy level?

the highest energy level which an electron can occupy the valance band at 0k is called fermi energy level

### Why was enrico fermi named after fermium?

Fermium was named after the name of Enrico Fermi ! Read the biography at: http://en.wikipedia.org/wiki/Enrico_Fermi.

### One Fermi is equal to how many meters?

One fermi is one femtometer, which is equal to 10-15 meters, or 0.000,000,000,000,001 meters.

### What did enrico fermi do?

Dear Reader, Enrico Fermi was the first person to discover and experiment with the atomic chain reaction. Love, Science Geek

### Enrico Fermi created the first nuclear bomb?

False, but he worked on the project that did. Enrico Fermi created the first nuclear reactor, is true.

### Who created on the first atomic bomb?

A man named Enrico Fermi. Enrico Fermi was a member of the scientific team that was working on the Manhattan Project.

### What is Enrico Fermi famous for?

Enrico Fermi was famous for his achievement in experimental and theoretical physics. He was an Italian physicist. He was best known for his Chicago Pile-1.

### What has the author Stefano Fermi written?

Stefano. Fermi has written: 'Bibliografia delle lettere a stampa di Pietro Giordani' -- subject(s): Bibliography

### Why is enrico fermi famous?

Enrico Fermi won the Noble Prize in Physics in 1938. He worked on particle physics, quantum theory, and the first nuclear reactor.

### What did enrico fermi invented?

Enrico Fermi is most noted for his work on the first nuclear reactor. He received the Nobel Prize in 1938 for his work on induced radioactivity.

### Why fermi level is found in the energy gap region since this region is forbidden for electrons and how does its probability is half?

The Fermi level is also known as the electron chemical potential (μ), and is a constant appearing in the Fermi-Dirac distribution formula: F() = 1 / [1 + exp((-μ)/kT)] Even though the gap may not contain any electronic states, there may be some thermally excited holes in the valence band and electrons in the conduction band, with the occupancy given by the Fermi-Dirac (FD) function. By inspecting the FD function, it becomes clear that if… Read More

### Where does the Fermi level lie in p-type and n-type semiconductors?

Fermi levels are filled with electrons and lies very close to the conduction band.