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What is the charge on Qb and QA
Item 14 Practice Rework for Practice only. Work will not be saved or a How Expre Review 1 Constants Objects A and B are both positively charged. Both have a mass of 200 g, but A has twice the charge of B. When A and B are placed with 10 cm between their centers, B experiences an electric force of 0.40 N Pa Wh Ex
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Answer #1

Electric force

F =k Qa X Qb/ r^2

0.4 =9×10^9 × 2 Qb xQb/ 0.1^2= 1800Qb^2

Qb= 4.7 X 10^2C

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