Formula Sheet Test one Rebecca Densen (10ˆa)x(10ˆb)=10ˆa+b 1 Light Year = 63000Au or 9.5e15m speed of light =3e8m/s Angular size of sun/moon =1/2˚ 1Au =1.5e11m, 1.5e8m ‘ =arcmin “ =arcsec 1˚ =60’ 1’ =60” G =6.67e-11Nmˆ2/ kgˆ2 or mˆ3/sˆ2kg Newton’s law of Universal gravity- Fg=-GMm/rˆ2 Fg=newtons M=mass of large m=mass of small rˆ2=distance to sun Orbital velocity- Vcˆ2=GM/r---m/s Orbital Period- P=2πr/Vc—s Newton’s 2 nd law F=ma Escape Velocity- Vesc=√2G/R Small Angle Formula- Angle diameter(arcsec)/206,265=linear diameter/distance
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This note was uploaded on 10/11/2011 for the course PHY 121 taught by Professor Weinstein during the Fall '08 term at SUNY Buffalo.