4_3-Clickers-U(x) and equilibrium

4_3-Clickers-U(x) - 2-Last class the following are basically all equivalent!•F(r is a conservative force••PE is well

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Unformatted text preview: 2-Last class: the following are basically all equivalent!•F(r) is a conservative force••PE is well defined•••∫′⋅′-=rrr)r(F)r(odU)r()r(FU∇-==×∇)r(F=′⋅′∫r)r(Fd∫′⋅′1rrr)r(Fodis path independent2-2At which of the numbered points is the force = 0 ?A)i only B) ii onlyC) ii & iv only D) ii, iii and iv only E) Some other combination! U(x)xiiiiiiiv2-3rU(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>0ab2-4rU(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 cC) Unbound, H “escapes” D) Oscillates around r=b E) Other/???E<0a bc2-5Which statements are true about a particle located at xo?I- If it has energy E1, it can move between B and EII- If it has energy E2 it is bounded between A&F, it cannot escapeIII- A particle with E3 is unboundedA)AllB)II onlyC)III only D)I&II E)II&III2-...
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This note was uploaded on 02/27/2012 for the course PHYSICS 2210 taught by Professor Stevepollock during the Spring '11 term at Colorado.

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4_3-Clickers-U(x) - 2-Last class the following are basically all equivalent!•F(r is a conservative force••PE is well

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