Unformatted text preview: Angular vs. actual size (smallangle formula): a d
D = 206265 arcsec Kepler’s Third Law, with M in Solar masses, a in AU, and P in years:
3
G.
P2 = —
M Kepler’s Third Lawj with M in Earth masses} a in l(mj and P in seconds: 0.3 132:1“1 —
0 XM Newton’s Second Law of Motion:
F = ma Newton’s Law of Gravity: Gml'l'H2
F: —2
‘T Wien’s Law:
0.0029 In K
"m : T StefanBoltzmann Law: F 0T4
0' : 567 x 103 w m2 K4 Temperatures:
9
Tp = 3T0+32
TC = 3(TF—32) TK : T0+273 Doppler effect:
AA DICE Volume of a sphere of radius R: 4
V : — R3
3 71'
Density:
density : mass
volume Typical speed of molecules of mass m in a gas at temperature T: 319T
”gas : I R: : 1.38 X 10—23 kg In2 8'2 K"1 Escape speed for planet of mass M and radius R: 1, 7 /2GM
8(1— R TIM} : 7"ng Center of mass: ...
View
Full Document
 Spring '08
 Staff

Click to edit the document details