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4_3-Clickers-U(x) and equilibrium

4_3-Clickers-U(x) and equilibrium - Last class the...

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2- Last class: the following are basically all equivalent! F(r) is a conservative force PE is well defined - = r r r ) r ( F ) r ( o d U ) r ( ) r ( F U - = 0 = × ) r ( F 0 = r ) r ( F d 1 r r r ) r ( F o d is path independent
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2- 2 At which of the numbered points is the force = 0 ? A) i only B) ii only C) ii & iv only D) ii, iii and iv only E) Some other combination! U(x) x i ii iii iv
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2- 3 r U(x) Fig 4.12 of Taylor shows PE of H in an HCl molecule. If the energy, E, is shown (dashed), what’s the best description of the motion of the H atom? A) Trapped, at r=a B) Oscillates around r=b C) Unbound, the H “escapes” D) Other/???? E>0 a b
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2- 4 r U(x) Fig 4.12 of Taylor shows PE of H in an HCl molecule. If the energy, E, is shown (dashed), what’s the best description of the motion of the H? A) Trapped, at r=a B) Trapped, at a OR c C) Unbound, H “escapes” D) Oscillates around r=b E) Other/??? E<0 a b c
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2- 5 Which statements are true about a particle located at xo?
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