**Coefficient of friction**, ratio of the frictional force resisting the motion of two surfaces in contact to the normal force pressing the two surfaces together. It is usually symbolized by the Greek letter mu (μ). Mathematically, μ = F/N, where F is the frictional force and N is the normal force.

Contents

- 1 What does μ stand for in physics?
- 2 What is this symbol μ?
- 3 What is the value of mu in physics?
- 4 What are the units of MU in physics?
- 5 What is U called in physics?
- 6 What does μ mean in math?
- 7 What is a backwards U in math?
- 8 What is upside down H?
- 9 What does D mean in physics?
- 10 What does u0 mean in physics?
- 11 What is K in physics energy?
- 12 What is the units of viscosity?
- 13 How do you find u in physics?
- 14 What is P SI unit?

## What does μ stand for in physics?

The lowercase Greek letter mu (µ) is used to represent the prefix multiplier 0.000001 (10 ^{–}^{6} or one millionth). For example, 0.000000001 farad or 10 ^{–}^{9} F of capacitance is commonly written as 0.001 µF.

## What is this symbol μ?

Micro (Greek letter μ (U+03BC) or the legacy symbol µ (U+00B5)) is a unit prefix in the metric system denoting a factor of 10^{−}^{6} (one millionth). Confirmed in 1960, the prefix comes from the Greek μικρός (mikrós), meaning “small”. The symbol for the prefix is the Greek letter μ (mu).

## What is the value of mu in physics?

The value of mu is 4 pi × 10^-7 H m^-1.

## What are the units of MU in physics?

μ is used as a symbol for: The SI prefix micro, meaning a factor of 10^{–}^{6} (one millionth). μ by itself is often used as the “unit” of strain, though in this context it retains its SI prefix meaning, which is interchangeable with “x 10^{–}^{6}” or “ppm” (parts per million).

## What is U called in physics?

Symbol. μ • (m) meter (metre), the unit of length in the International System of Units.

## What does μ mean in math?

μ = ( Σ X_{i} ) / N. The symbol ‘μ’ represents the population mean. The symbol ‘Σ X_{i}‘ represents the sum of all scores present in the population (say, in this case) X_{1} X_{2} X_{3} and so on. The symbol ‘N’ represents the total number of individuals or cases in the population.

## What is a backwards U in math?

This is set notation. ∪ means union, ∩ means intersection. For example: A ∪ B means everything in A and B; A ∩ B means the things that are common to A and B. Alan Sep 3, 2014.

## What is upside down H?

What you call “an upside down h” is a metric symbol for “micro” (see metric prefixes). It means 1/1,000,000. A “g” beside it stands for grams. All together is a unit that is 1/1000000 of a gram.

## What does D mean in physics?

δ d = diameter. d = distance. D = distance from screen to fringe pattern.

## What does u0 mean in physics?

The permeability of free space, μ_{}, is a physical constant used often in electromagnetism. It is defined to have the exact value of 4π x 10^{–}^{7} N/A^{2} (newtons per ampere squared). It is connected to the energy stored in a magnetic field, see Hyperphysics for specific equations.

## What is K in physics energy?

Boltzmann constant, (symbol k), a fundamental constant of physics occurring in nearly every statistical formulation of both classical and quantum physics.

## What is the units of viscosity?

The unit of viscosity is newton-second per square metre, which is usually expressed as pascal-second in SI units.

## How do you find u in physics?

Final velocity (v) of an object equals initial velocity (u) of that object plus acceleration (a) of the object times the elapsed time (t) from u to v. Use standard gravity, a = 9.80665 m/s^{2}, for equations involving the Earth’s gravitational force as the acceleration rate of an object.

## What is P SI unit?

0.000 000 000 001. pico (p) 10^{–}^{12}. 0.000 000 000 000 001.