*Two charges, QA and QB, are located 20 cm apart as shown. When a third charge isplaced at the x mark, 10 cm from QB, the electric force on Qc is zero. Find the value(including sign) of QB.Q₁ = 6 x 10 °C20 cmQ₁ = ?10 cm

*Two charges, Q and Qs, are located 20 cm apart as shown. When a third charge is placed at the x mark, 10 cm from Qs, the electric force on Qc is zero. Find the value (including sign) of Q. Q₁ = 6 x 10°C 20 cm Q₂ = ? 10 cm

*Two charges, Q and Qs, are located 20 cm apart as shown. When a third charge is placed at the x mark, 10 cm from Qs, the electric force on Qc is zero. Find the value (including sign) of Q. Q₁ = 6 x 10°C 20 cm Q₂ = ? 10 cm

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter19: Electric Forces And Electric Fields

Section: Chapter Questions

Problem 9CQ

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Question

*Two charges, QA and QB, are located 20 cm apart as shown. When a third charge is
placed at the x mark, 10 cm from QB, the electric force on Qc is zero. Find the value
(including sign) of QB.
Q₁ = 6 x 10 °C
20 cm
Q₁ = ?
10 cm

Expert Solution

Step 1

$Q_{A} = 6 \times 10^{- 9} C s e c o n d c h a r g e = Q_{B} T h i r d c h a r g e = Q_{C} d i s \tan c e b e t w e e n Q_{A} a n d Q_{C} = 30 c m = 0.3 m d i s \tan c e b e t w e e n Q_{B} a n d Q_{C} = 10 c m = 0.1 m$

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