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Chrome File Edit View History Bookmarks People Window Help [ +9 % 4)) 1396 D, Sun 11:41 PM a E MasteringPhysics: Homework Chapter 23 https://session.masteringphysics.com/myctitemView?assignmentProblemID=59016755 MPABRAHAM25242016S Signed in as Tanner Calloway Help Close Homework Chapter 23Exercise 23.19 Resources « previous 6 of 10 next > Exercise 23.19 Find the potential at point A Two point charges q1 2.10 nC and q 6.10 nC are 0.100 m apart. Point A is midway between them; point B is 0.080 m from q1 and 0.060 m from q2 (the figure (Figure 1)). Take the electric potential to be zero at infinity VA427.5 Submit My Answers Incorrect; Try Again; 5 attempts remaining Figure 1 of 1 Part B Find the potential at point B 0.050 mK-0.050 m Submit My Answers Give Up Part C Find the work done by the electric field on a charge of 2.60 nC that travels from point B to point A Express your answer using two significant figures

Explanation / Answer

Potential at Point A,

Va = k*q1/r + k*q2/r
Va = 8.9*10^9 * 10^-9 *[ 2.10/0.050 - 6.10/0.050]
Va = -712 V

Potential at point B,
Vb = k*q1/r + k*q2/r
Vb =  8.9*10^9 * 10^-9 *[ 2.10/0.080 - 6.10/0.060]
Vb = - 671.2 V

W = q*V
W = 2.6*10^-9 (41.2 V)
W = 1.07 * 10^-7 J

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