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- ...l using the "known" density of another material. Mathematically, relative density is expressed as: where <math>G</math> is the relative density, and <math>\rho</math> is the densities of the two materials in the same un ...16 KB (2,665 words) - 03:30, 18 September 2007
- == Probability Density Function of a Continuous Random Variable == == Joint Probability Density Functions == ...3 KB (449 words) - 09:34, 16 August 2007
- The probability density function, <math>f_{X}(x)\,</math>, represents the distribution of the rando [[Image:Exponential distribution pdf.png|325px|Probability density function]] ...1 KB (178 words) - 18:38, 30 July 2006
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- == Probability Density Function of a Continuous Random Variable == == Joint Probability Density Functions == ...3 KB (449 words) - 09:34, 16 August 2007
- == Probability Density Function == The '''probability density function''', or '''pdf''' of a random variable is the function defined by: ...1 KB (253 words) - 23:36, 13 November 2006
- ...f) swing it around in air and then try to swing it around under water. The density of the water is much So we know that density, area and speed all play a role in the drag force.The expression we use for ...1 KB (213 words) - 08:40, 28 June 2006
- ...or 10 km. No one dares pass. After the police cruiser joins, the platoon density increases to 20 veh/km/lane and flow drops. How many vehicles (per lane) w ...681 bytes (108 words) - 19:28, 6 March 2008
- ...re measured as 88, 80, 90, and 72 km/hr respectively. Calculate the flow, density, time mean speed, and space mean speed of the vehicles. === Density === ...2 KB (216 words) - 16:51, 6 March 2008
- We can use Ohm's law to relate the average current density to the electric field, by using a constant quantity of the conductor, known where '''j''' is the current density (current per unit area), σ is the conductivity and '''E''' is the electric ...797 bytes (119 words) - 04:08, 9 July 2007
- == Energy Density Spectrum == We can define the energy density spectrum of the continuous-time frequency output of the DTFT as follows: ...2 KB (401 words) - 23:25, 11 January 2008
- Density is defined as mass divided by volume ...303 bytes (47 words) - 04:03, 13 September 2007
- ...d''' is equal to the square root of '''tension''' divided by the '''linear density''' of the string. '''Linear density''' of the string is equal to the '''mass''' divided by the '''length''' of ...2 KB (362 words) - 00:31, 24 October 2006
- The probability density function, <math>f_{X}(x)\,</math>, represents the distribution of the rando [[Image:Exponential distribution pdf.png|325px|Probability density function]] ...1 KB (178 words) - 18:38, 30 July 2006
- We aim to develop Mathematical relationships between flow, density, and speed. This helps in planning, design, and operations of roadway faci === Flow and Density === ...6 KB (946 words) - 16:53, 6 March 2008
- :'''j''': Electric current density :σ: Charge density ...1 KB (166 words) - 12:01, 9 September 2007
- *n is the electron density in ''m<sup>-3</sup>'' *p is the hole density in ''m<sup>-3</sup>'' ...1 KB (203 words) - 03:40, 11 February 2007
- ==Density of nuclear matter== <math>density = \frac{mass}{volume}</math> ...2 KB (326 words) - 21:47, 9 December 2007
- ...t a certain event will occur. It is calculated based on the '''probability density function''' and '''cumulative distribution function''', described below. == Probability Density Function == ...5 KB (864 words) - 15:02, 13 September 2007
- ...f the properties of the transform, and then will talk about power spectral density functions. === Energy Spectral Density === ...5 KB (854 words) - 12:42, 2 January 2008
- ...ymmetrical about the midpoint (i.e. ''even''). Recall that the probability density is given by the wavefunction multiplied by its conjugate. The statement of ...2 KB (263 words) - 02:03, 24 March 2009
- Density = Mass/Volume ...340 bytes (61 words) - 03:26, 24 January 2008
- =Density Functional Theory= [[w:Density_functional_theory| Density Functional Theory]] ...2 KB (252 words) - 05:26, 11 December 2006
- ===Frequency Density=== Another way of drawing a histogram is to work out the Frequency Density. ...4 KB (633 words) - 21:51, 12 October 2007