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Details Title: Exam 1 Description: Key values and equations Total Flash Cards: 34 Created: 10/04/2007 19:08:11	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term λmax of sun Definition 500 nm or 5000 A Term Temperature of the Sun Definition 6000 K Term Distance Earth to Sun Definition 1.5 x 10^8 km or 1 AU Term V circ at Earth's surface Definition 8km/sec Term Radius of Earth Definition 6400 km Term Radius of Sun Definition 110(REarth) Term Distance Alpha Centauri Definition 4.3 LY Term c Definition 3 x 10^5 km/s Term λ Hα Definition 6563 A Term 1 degree Definition 60' 3600" Term Visible Light Definition 400 nm to 700 nm (red) Term EM spectrum Definition GXUVIR Term distance = Definition rate x time Term Circumfrence Definition 2 pie r Term Surface area of sphere Definition 4 pie r^2 Term Volume of sphere Definition 4/3 pie r^3 Term 1 m Definition 10^9 nm, 10^10 A Term 1 yr Definition = approx. pie x 10^7 sec Term 1 rad Definition 57.3 degrees or 206265" Term small angle formula Definition s = theta/57.3 degrees Term Peak wavelengh Definition λmax = 2.9 x 10^6 nmK/T Term Force of Gravity Definition F = GM1M2/d^2 Term Flux(brightness) Definition F = L/4pied^2 Term Power Definition F = sigma x T^4 Term Wavelenght Definition Wavelength = speed/velocity = c/v Term Planck's constant Definition h = 6.63 x 10^-34 joule/sec Term Energyof photon Definition E = hf or hc/lambda Term Kinetic energy Definition 1/2 mv^2 Term Sigma Definition 5.67 x 10^-8W/(m^2K^4) Term Circular velocity Definition square root(GM/r) Term Escape Velocity Definition square root(2) v circ Term Force of gravity Definition mg Term Period Definition P = circum. orbit/v circ Term Diffraction limit Definition theta = 2.5 x 10^5arcsec(lambda/D)