Two small objects each with a net charge of Q (where Q is a positive number) exe

Question

Two small objects each with a net charge of Q (where Q is a positive number) exert a force of magnitude F on each other. We replace one of the objects with another whose net charge is 4Q. The original magnitude of the force on the Q charge was F; what is the magnitude of the force on the Q now? 16F 4F F F/4 other Answer: What is the magnitude of the force on the 4Q charge? 16F 4F F F/4 other Answer: Next, we move the Q and 4Q charges to be 3 times as far apart as they were. Now what is the magnitude of the force on the 4Q? F/9 F/3 4F/9 4F/3 other

Explanation / Answer

F = KQ*Q / r2

if we do Q => 4Q

then F=> 4F

2

will be the same as Q

so

4F

3

r => 3r

F=> F/9

ANS = A

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.