Formulas, facts and constants

Acceleration of gravity
Density of air (STP) =
STP
Standard Temperature and Pressure

Escape velocity 1.12*104 m/sec = 6.95 miles/sec
Centripetal accelaration a = v2/r (linear speed of the body)2/radius of rotation
Sphere
Torus
R=Major (rotation) Radius
r=Minor radius


Cylinder
R=Radius, L=Length


Mass of the earth 5.98*1024 kg
Volume of the earth 1.087*1021 m^3 = 3.84*10^22 ft^3
Orbital speed of the earth 2.977*104 m/s = 18.5 miles/s (mean)
Earth's rotation 0.0000116 rpm
Solar constant
(Solar energy outside Earth's atmosphere)

More Formulas, Facts