Equation Sheet for Examination - Principles of Modern Physics | PHYS 420, Study notes of Physics

Download Equation Sheet for Examination - Principles of Modern Physics | PHYS 420 and more Study notes Physics in PDF only on Docsity! PHYS420 (Spring 2002) Riq Parra Equation Sheet for Exam #2 Friday, April 12th, 2002 Stefan’s law 4Tetotal σ= Wien’s displacement law KmxKTm ⋅= −3max 10898.2)()(λ Planck’s formula )1( 18),( 3 3 − = Tkhf bec hfTfu π Balmer – Rydberg formula         −= 22 111 if nn R λ JJ Thomson’s experiments ldB V m e e 2 θ= Photoelectric effect φ−= hfKEmax maxKEeVstopping = Half-life teNtN λ−= 0)( λ 2ln 2/1 =T Bohr model hfE =∆ hnvrmL e == Z an rn 0 2 = 2 2 2 2 0 2 6.13 2 n ZeV n Z a keEn −=      −= Compton effect )cos1(0 θλλ −+=′ cm h e de Broglie wavelength mv h deBroglie =λ Uncertainty Principle h≥⋅ px δδ h≥⋅ tE δδ Some useful constants sJxh ⋅= −3410626.6 nmeVhc ⋅= 7.1239 4281067.5 −−− ⋅⋅= KmWxσ nma 0529.00 = 22910988.8 −⋅⋅= CmNxk 1710097.1 −= mxR kgxme 3110109.9 −= kgxmp 2710673.1 −= Cxe 1910602.1 −=