problem07_37

University Physics with Modern Physics with Mastering Physics (11th Edition)

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
7.37: a) . 6 12 7 13 r b r a r U r F - = - = b) Setting 0 = r F and solving for r gives . ) 2 ( 6 / 1 min b a r = This is the minimum of potential energy, so the equilibrium is stable. c) . 4 2 4 ) ) / 2 (( ) ) / 2 (( ) ( 2 2 2 2 6 6 / 1 12 6 / 1 6 min 12 min min a b a b a ab b a b b a a r b r a r U - = - = - = - = To separate the particles means to remove them to zero potential energy, and requires the negative of this, or . 4 2 0 a b E = d) The expressions for 0 E and min r in terms of a and b are . 2 4 6 min 2 0 b a r a b E = = Multiplying the first by the second and solving for b gives 6 min 0 2 r E b = , and substituting this into the first and solving for
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: a gives 12 min r E a = . Using the given numbers, . m J 10 41 . 6 ) m 10 13 . 1 )( J 10 54 . 1 ( 2 m J 10 68 . 6 ) m 10 13 . 1 )( J 10 54 . 1 ( 6 78 6 10 18 12 138 12 10 18 ⋅ × = × × = ⋅ × = × × =------b a (Note: the numerical value for a might not be within the range of standard calculators, and the powers of ten may have to be handled seperately.)...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern