google.con https:/hearn.u https:/Mearn.u. Circuits PDF-… v Question Completion S

Question

google.con https:/hearn.u https:/Mearn.u. Circuits PDF-… v Question Completion Status: An electric fence transformer that generates 8. 000V will produce an electric field of 800.00 between two conducting plates spaced a dis- tance lem apart. It will also gen- erate a charge Q +0.89nC on a conducting sphere of radius Imm. What must the mass of the con- ducting sphere be so that it floats in earth's gravity in an electric field of 800,000 ? The gravitational force acts in the - direction in the fig ure. Select One of the Following (a) 7.3 × 10-kg (b) 1.4 x 10-kg (c) 0.1 × 10-1kg (d) 3.9 × 10-1kg Answer (a) Answer (b) Answer (c) Answer td) Answer le)

Explanation / Answer

the electric field force must be able to balance the weight:

so qE = Mg

800000*0.89 *10^-9 = M *9.8

M = 0.0726 grams

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

---

---

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