State the law of conservation of electricdym7 dd2/gya. charge.

  Is it possible for two negatwfb)2ne,+o,o cn) paf8f y5 xqive charges to attract each other?

  Is it possible for a positiva ,iso6l z)pp1j4 ct:njov*x5 e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of sir ph i0vvf vf,lu0/i eb y8g(v2,,r)kelk. During the process the glass rod acqu,lrk(08 , uvy r /)gfvipvvbi0he2,e fires a positive charge and the silk

  A proton carries a

  The model of the atom sjl6+br6 gzh ;lhows a

  A neutral atom always hylm6b- - pgrwu7 s0v7b eb.3voas

  An atom has more electrons than protons6qgz:-a)vg8 p ;jmkbn. The atom is

  Materials in which the electrons are bipc3:3zunnic x5 hq5+ound very tightly to the nuclei are referri+5zxh5pq:c 3nui 3nced to as

  Materials in which the electrons are bound very loosely 3fd vdy9oyv)fxvi/lr/ 1t2t*to the nuclei and can move about freely within the material are re f*1d/r9o2l /v xdvyf)itt3 yvferred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. ;kt gnc 0fq+i7The end of the metal bar farthest from the chargedtn7gikc ;0+f q rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. qo:8.zuh zz)fThey are placed near each other on an insulated table. Sphere B is briefly touzu f:)z.zo 8qhched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge anh x( -p 4q1*m,xp p/bqtrd6etv electroscope positively?

  An originally neutral electroscope is briefly touched with a positively ch4. +lh3t9nig1:h 7fkqn b biauarged glass rod. The electrosbu7ink1nb 3:hh9il. fq g4ta+ cope

  An originally neutral electroscope is grounded briefly whuckubj ms; jcm)4q)7u 8(p t,lile a positively charged glass rod is held near it. After the glass rod is removed, the e(7 usm)uukp4qjc lb ;m8 tjc,)lectroscope

  A positive object touches a neutrawr+n0go( n hc4lh/v9ml electroscope, and the leaves separate. Then a negative object is brought near th0c4g (9mhn/rn+hw lv oe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged 0on447khoh0y2be/iqa u9m 0doee4tixg2 t2 fobject is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A sec7t0aenoi9 qo4u 4g0y iedxft4 h2okme2/ 2b0hond neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constanta/i o:-efcm(80g nu lk)sh2am $k$, which appears in Coulomb's law?

  Two charged objects are sepa,sc.vb8 ) y9d:vv(mv woxo y9brated by a distance d. The first charge is larger in mag, v:99vdby vox.sym(bwv8co )nitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. +qd6jdp4c3qmo k, nj-rwy:i4 They are placed near each ot4q:+3j yciprdm6 ,4 nkod-wqjher on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain for3c0br mphre 09ce. If the charges on both ob0rr9mehbcp 30jects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual os 8;qmr v0- famlx,r-:rz0hv attractive forces of F on each other. If the charges are separated by a distance of d/3, what are thzx-v,sfq:8;hm-ar olr0 v0rm e new mutual forces?

  Two charged objects attro s wpo4 f5(9j:am2m ,dm)gnadact each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its originaw,5m:ja2)(fd4 g oondm9p smal value? The force is now equal to

  An electron and a proton are separated by a distance q7/tqphs an,h: 7lw- dof 1.0 m. What happens to the magnitude of the force on the prot 7l7,thp qwdqhn-:a/ son if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happen xr3qg+lk u6dw69tcc8j5waz4 s to the magnitude of the force on the first e wa 365zjwc+9qd r4t6cug xk8llectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hap2 g5q 3h g4.ad0lk2tsspgb)bjw vkq24pens to the size ofs3gg 22hk 0dg4tv52q)4s jq wa.bblpk the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a sq vvc ju)aat8 ctvg319 m8p7c8juare. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identical chargeva9mp cg8aj18v 8c73t )jtc uvs of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroie 4fszdf;l9d aw,u9tbbh)da2uj /p) . d of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's ved49uhb9bua2 lp )f;w djzatde.f,/)srtices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vea/:nh zn g .wb 4wo*17wnpqr+sctor?

  At twice the distance from a point charge, the strengtrc2 z*q itg4i98yrth mn+jr8/ ,z0tech of the electric field

  Is it possible to have / j rxm6xa7yq*a zero electric field value between a negative and positive charge along the line joining the two charges?xqym ra*j7/6x

  Is it possible to have a zero electric field value juo802tk icmg.t6f /zbetween two positive charges along the line joining the two chao.fzm0kc28/ig 6 tutj rges?

  Electric field lines near psit/ qqfux v*xk,*ive point charges

  The electric field si4gzrpl 6u7 s qt)e(u *)8cd5tw 5mpwt;njln,hown

  Can electric field lines intersect in free spacv xgahme+(f9(e?

  A solid block of metal in electrostatic eqa ;;d rfvhn 0dyiu)hu,fx,)h1 uilibrium is placed in a uniform electric field. Give , idhhx);)1 uaryh;0v ,dfnfua statement concerning the electric field in the block's interior.

  If a solid metal sphe +t;y(: spe:jhneaoc ;re and a hollow metal sphere of equal diameters are each given the same charge, the electri; jh;ac( +: et:enopsyc field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a 9 t) o)8q fy:wpquhjrqsdq1:x z h-f8(wooden table in a region where a uniform electric field is directed straight upwayqfh j8)8tp rqx:hzd9f(qo u) q ws:-1rd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostati jzw4a*08wyqq c equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sph310 b:ikt+am(ob xrvdere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sdb o0at k3(i +bv:xrm1phere has

State three properties of conductors in staqul3qocgqy;) d; n(*htic equilibrium.

State Gauss's law.

  The charge carried by ond8+4 u leh0z b+o/, jdmlv )wy(8jiyuse electron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of f;esw0h1y +m5b4g fc9b)ir hu+2.00 mC. How many more protons than electrons does this piece of plgy5+91wr fsh4cbhb 0eum f i);astic have?

  What is the charge on 1 ca()fm+ ewuzitj: ,.c kg of protons?

  An atomic nucleus has a cha;qsuzl.v- *h:pdu s e,p+hdi7rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatnjys;:r r:ic),vr hr2 ed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the m)rs ;hj iyr:rv2n ,c:ragnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, q/t2fkqky tor:w :9 tt53aiu) and the force between them is 1.0 N. What isqiky:9t:t kw5tto 2 /r3fqa)u the magnitude of the second charge?

  Two 1.0-C charges have a force between them of*:x 9dgijnaz+ h88 rml 1.0 N. How far apart are they?

  The force between a b orhan7a::s.$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apa4p6q7h q(sz)l aoa6 gqrt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force q7( qa g4z6hq6sloa p)between them?

  Three identical point charges of 2.0 mC are w u1wezt za02f rp*o67placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are f pe2*0r1a7zuwz ow6t the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-ay /xzv3ne(v 7vxis. A charge of +2.0 mC is placed at the/37vvyxevn(z origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 bgz0k j (, l/e7a0xsu rizdr.-= 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the forrxu izke0 ,0a7/(s rgb jlzd-.ce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squbrx+,5zchl6s gkc g3) are, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnituxcbhzgls )5rg 63c +,kde of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1+5jkiu2g* lo0v,vvv z0 m); Q3 = 5.0 nC is at (0, 0)52+*0 gjz uvv,koi vvl. What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.vfq+k ;tvh x lxdba s5*8y )h(xe83rmg5n5m2q10 m); Q3 = 5.0 nC is at (0, 0). What is the hh5vd+mvq; yb235xf8en tqr l m)s x8(*akx5gdirection of the net force on the 5.0 nC charge?

  Three identical charges of 43zz rnf 5k2pe3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the k5zpnfz 342er magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 5wf / ,kyf) za9gefs8lm. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic 5)legfa f 8z /wy9,skfforce acting on it would be zero?

  A +3.0-C charge is ar)h/healxr6 * t the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge /rx 6l*e)hhra be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherc.i.jhy jln tx;b*9a0 fg u.w:p7 owe/e can a third positive charge +q be placed so ah:.ec; .iw9f wljjt.p b nx/you70* gthat the force on it is zero?

  A copper penny has a mass of 3.0 g. A tot3.h h rqwpn9l)rwx 0x4al of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up against the force of an u:mmkrnxi,f -xbd d.-* 3v5gravity by the attraction of a fixed proton some distance above it. dn5,xbam3- .*d -kxnf:irv mu How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by npekm ql9.6yka0n: :lc onconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thkpm:q6aen9 :cl0ky. le angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. W phh r0b( /.4n5hkalbphat is the magnitude of the electric field at a distance of 1.0 m from the nuclpa./k p 0rh hnblb45(heus?

  What are the magnitude and direction of the electric field at a distance o0,ao gul5d3a*e/6bj- bsex (.oszmzif 1.50 aeubsl/g-0zd3moabs . 5j6zeoi( x*,m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of te*zerv* 3v+) kmfyoo8he electric field at the loef+3v*e r8ym k*zo)ovcation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dired8ps +jh3pq,qvl q// dction of the electric fieldv3/8qj/,pphdd+ sqlq ?

  A 5.0-C charge is 10a*y6of.8 .hq cuij- 4vwxej t* m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of u*-hov4 jeyx.j w6 qit.f8a *cthe test charge?

  Two point charges each have.zvp4swlcsi- .o-ue- a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midw.v .-peu w- ol4cssiz-ay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mepegxfsnl3v5t6cu , .6) jw3zC charge is placed at the 50 cm mark. Whaswe 3v)jxc5 ezug6.lt3 6 npf,t is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cha y4o/+gd7 xzkm:jx9w3r4 las grge is placed at the 50 cm mark. At what point on a line joining the two charges is the electr7x9wyx3a:4rd lo +zgmgjk/ 4s ic field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m.qeq /w b9qwv/3oh e96j What is the magnitude of the electric field at thw 3qe//e vqqboj69h9 we point midway between them?

  Three 3.0 mC charges are at the three corner1lp :xqd;3(ogsi0f kms of a square of side 0.50 m. The lasmg3q0 ; sdp:(kfliox1t corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargp gr07 j:k2dkwt/rg0v es are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnwrgjkk7p/d gv 2 t0:r0itude of the electric field at the square's center?

  A force of 10 N acts onc5k32hldrdhps (85kz)4xa a f a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitud4f dr8d(l ksx ca)zh5h25pa3 ke of this electric field?

  A particle with a charge of 4.0 mC has a m(h oyp) (o6ic-h(ksc9 h)xr epass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0 zjn+mx8ey1;(0y ,xgy t*uxmq.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to b8+x;mm(ynyyqu1 g*x 0tz ,jexe suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pl sf5+z 9lcqm0zaced inside a uniform elec0cl+59z fqsz mtric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriecfmsnr: we8rf+ 4s *3 r1k3upfs a charge of +2.0 mC. What is the magnitude offs+ 14 r s:uknp8f*mwrc33efr the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect bv,ufam5w7puf4dcdf8 s 8s-6ric field 6.0 cm fc dbf,p 8u8-7sa65fwv4ufmdsrom the center of the sphere?