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15 results for “density”

Formulae (15)

f(x) = \frac{1}{\sigma\sqrt{2\pi}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}

Probability density of the bell curve.

f(x) = \frac{1}{\sigma\sqrt{2\pi}} e^{-\frac{(x-\mu)^2}{2\sigma^2}}

Bell-curve probability density function.

\rho = \frac{m}{V}

Mass per unit volume.

v = \sqrt{\frac{T}{\mu}}

Speed depends on tension and linear density.

u = \tfrac{1}{2}\varepsilon_0 E^2 + \frac{B^2}{2\mu_0}

Energy stored per unit volume in EM fields.

SG = \frac{\rho}{\rho_{water}}

Density relative to water.

\rho = \frac{m}{V}

Mass per unit volume of a substance.

\rho = \frac{PM}{RT}

Density of an ideal gas.

D = \frac{E}{m}

Calories per gram of a food — a key idea in filling, lower-calorie eating.

\rho = \frac{m}{V}

Mass per unit volume of a material.

V_{up} = \dfrac{F_{req} - F_{OB}}{\rho}

Fuel to be loaded: the required ramp/block fuel minus fuel already on board, converted from mass to volume using fuel density.

L = \tfrac{1}{2}\rho v^2 S C_L

Aerodynamic lift produced by a wing depends on air density, speed squared, area and lift coefficient.

DA = PA + 120(OAT - ISA_{temp})

Pressure altitude corrected for non-standard temperature; higher DA reduces performance.

DA = PA + 120(OAT - ISA)

Pressure altitude corrected for temperature.

D = \frac{P}{A}

Number of people per unit area.