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### P231-Quiz7Info

Course: PHYS 231, Fall 2009
School: University of Rochester
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Word Count: 267

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for Information the Quiz on Ch. 7 &amp; 8 Fundamental Concepts Things you must know: (1) Definition of and approximation for average velocity (and the position update formula) 1 (2) Definition of momentum = 2 1 - ( v c) (3) The Momentum Principle (also, the momentum update formula and derivative form) (4) Definitions of total energy, rest energy, and kinetic energy of a particle (5) The Energy Principle be...

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for Information the Quiz on Ch. 7 & 8 Fundamental Concepts Things you must know: (1) Definition of and approximation for average velocity (and the position update formula) 1 (2) Definition of momentum = 2 1 - ( v c) (3) The Momentum Principle (also, the momentum update formula and derivative form) (4) Definitions of total energy, rest energy, and kinetic energy of a particle (5) The Energy Principle be able to apply to "point particle" systems and real systems Specific Results 2 y f = yi + vyi t - 1 g ( t ) x f = xi + vxi t 2 vxf = vxi vyf = vyi - gt Projectile Motion: m1m ^ Fgrav on 2 by 1 = -G 2 2 r r Fgrav mg near Earth's surface 1 q1q2 ^ Felec on 2 by 1 = r 4 0 2 r Fspring = ks s U i 1 ks s 2 - Em 2 ^ Fair - 1 C Av 2 v 2 U grav = -G m1m2 grav r U mgy near Earth's surface U elec = 1 q1q2 4 0 r U spring = 1 ks s 2 2 Ethermal = mCT Fbuoyancy = weight of displaced fluid E 2 - ( pc ) = mc 2 2 K 1 mv 2 = 2 Y= p2 for v << c 2m ( ) 2 W = F r (small displacement) FT A ( macro ) L L dp ^ F|| = p dt x ( t ) = A cos ( t ) Y= Multiparticle Systems: ^ dp v ^ F = p = p n dt R k = s m m r + m1 r1 + ... rcm = 1 1 m1 + m2 + ... 2 K trans 1 Mvcm 2 ks,i d ( micro ) v=d ks,i...

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