Three charges are situated at corners of a rectangle, as shown. The Coulomb cons

Question

Three charges are situated at corners of a rectangle, as shown. The Coulomb constant is 8.98755 times 109 N m2/C2. How much energy would be expended in moving the 8.74 mu C charge to infinity? Answer in units of J A uniformly charged sphere has a potential on its surface of 440 V. At a radial distance of 32 cm from this surface, the potential is 110 V. The Coulomb constant is 8.99 times 10 9 N m2/C2. What is the radius of the sphere? Answer in units of m What is the charge of the sphere? Answer in units of nC

Explanation / Answer

Question 1)

U = kq1q3/r1 + k q2q3/r2

     = 8.98755e9*1.32e-6*8.74e-6/0.0284 + 8.98755e9*4.44e-6*8.74e-6/0.08253975

     = 7.88 J

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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