Midterm I-Sec 1-v4

Midterm I-Sec 1-v4 - Midterm I Physics 8A, Section 1...

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Midterm I Physics 8A, Section 1 (Fajans) 3/3/2010 You may use one side of one 8.5x11 sheet of notes. No calculators, cell phones or other electronics will be allowed; they must remain off and in your bags for the duration of the exam. Please show your work. We will give partial credit; you will not receive any credit if we cannot determine how you came up with an answer. If you continue your work onto a discontinuous page, please write “continued later” on the earlier page; otherwise your later work may be overlooked. Note that the four problems are not of equal difficulty, but are awarded equal points. Do not get stuck on a problem or part that you cannot do! If you have any questions, please ask the proctors. Tear off these first three sheets of paper; do not turn them in. Possibly useful formulas: 2 2 1 0 0 at t v x x + + = at v v + = 0 ax v v 2 2 0 2 + = 2 2 0 0 0 2 x v g x v v y x x y = dt dx v = dt dv a = dt dv m ma F = = 2 r mM G F G = N F N F s fr k fr µ = f π ω 2 = r v = 2 2 r r v a = = 2 2 mr r v m F = = T f 1 = = = = t F dt F v m p I = i i i v m p dt dp F ext = 11 2 2 12 cm ii i i i mx x mm m + = + =
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11 2 2 12 cm ii i i i my my y mm my m + = + = = i i i i i cm m v m v dt dv m F cm i i ext = 1 U mgh = 2 1 2 U kx = 2 1 2 K mv = EUK = + F kx = − cos W Fx
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Midterm I-Sec 1-v4 - Midterm I Physics 8A, Section 1...

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