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Chapter 25: Q. 7 (page 709)

What is the electric potential energy of the group of charges in

FIGURE EX25.7?

Short Answer

Expert verified

The platform's restoring force is-4.7×10-6.

Step by step solution

01

Definition

Given information:

Charges are -4.0nc,role="math" localid="1649589851700" 3.0nc,3.0nc.

Distance between two charges -4.0ncand3.0ncis 4.0cmandrole="math" localid="1649589934406" 3.0cm.

Find:

The objective is to find electric potential energy of the group of charges.

The total amount of energy liberated by a cohesive block charge if it is positioned at any location is through as voltage .

02

Evaluating Potential Energy

q1=−4.0nCq2=3.0nCq3=3.0nCd12=3.0cmd13=4.0cm

This can be used to illustrate the Euclidean theorem.

d23=d122+d132=5cm

03

:  Mechanical  Energy of  pair

The potential maximum electricity is summation of the energy aspirations within each pair..U=14πε0q1q2d12+q1q3d13+q2q3d23

Get on th data values

localid="1649412765806" U=-4.7×10-6J

04

Diagramtic Explantion

-4.7×106J

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Most popular questions from this chapter

An arrangement of source charges produces the electric potential V = 5000x2 along the x-axis, where V is in volts and x is in meters. What is the maximum speed of a 1.0 g, 10 nC charged particle that moves in this potential with turning points at 8.0 cm?

Your lab assignment for the week is to measure the amount of charge on the 6.0-cm-diameter metal sphere of a Van de Graaff generator. To do so, you’re going to use a spring with a spring constant of 0.65 N/m to launch a small, 1.5 g bead horizontally toward the sphere. You can reliably charge the bead to 2.5 nC, and your plan is to use a video camera to measure the bead’s closest approach to the edge of the sphere as you change the compression of the spring. Your data is as follows:

Use an appropriate graph of the data to determine the sphere’s charge in nC. You can assume that the bead’s motion is entirely horizontal, that the spring is so far away that the bead has no interaction with the sphere as it’s launched, and that the approaching bead does not alter the charge distribution on the sphere.

a. What is the potential of an ordinary AA or AAA battery? (If you’re not sure, find one and look at the label.)

b. An AA battery is connected to a parallel-plate capacitor having 4.0 cm * 4.0 cm plates spaced 1.0 mm apart. How much charge does the battery supply to each plate?

What is the potential energy of the electron-proton interactions in FIGURE EX25.5? The electrons are fixed and cannot move.

FIGURE P25.69 shows a thin rod of length L and charge Q. Find an expression for the electric potential a distance x away from the center of the rod on the axis of the rod.
See all solutions

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