PHYSICS Signed in as Kolton Cotton ch 23Hw Exercise 23 19 preicus Exercise 23.19

Question

PHYSICS Signed in as Kolton Cotton ch 23Hw Exercise 23 19 preicus Exercise 23.19 Part A Find the potential at point A Two point charges q#230 nC and g."-700nOare 0 100 n apan Point A is midway between them, point Bis 0 080 mhom 91 and 0 060 mfrom 0hengure Exgure 1)) Take the electric potential to be zero at infinity Submit My Answers Give Up Incorrect; Try Again; 5 attempts remaining Part B Find the potertial at point B Figure 1 wof1 Part c Find the werk done by the electric field on a charge of 2 30 nC that travels rom point Bto pont A Express your answer using two significant figures 0.050 m- 0.050 m 42

Explanation / Answer

A)
q1 =2.3*10^-9 C
q2 = -7*10^-9 C
r1 = 0.05 m
r2 = 0.05 m

VA = K*[q1/r1 + q2/r2]
= (9*10^9)* [2.3*10^-9 / 0.05 - 7*10^-9 /0.05]
= -846 V
Answer: -846 V

B)
q1 =2.3*10^-9 C
q2 = -7*10^-9 C
r1 = 0.08 m
r2 = 0.06 m

VB = K*[q1/r1 + q2/r2]
= (9*10^9)* [2.3*10^-9 / 0.08 - 7*10^-9 /0.06]
= -791.25 V
Answer: -791.25 V

C)
W = - q*(VB-VA)
= - 2.3*10^-9 * (-791.25 + 846)
= 1.26*10^-7 J
Answer: 1.26*10^-7 J

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