State the law of conservation of electric cha-i66mbzn5x4 wf 7ta oe36doonrge.

  Is it possible for two negative kw)w/ ycc(f brh-1 r*wgf6a(acharges to attract each other?

  Is it possible for a positiveld2o h 7ro)v*e and a negative charge to attract each other?

  A glass rod is rubbeul i 7kch27o+ f7hw 9a3ecnyh*d with a piece of silk. During the process the glass rod acquires a positive cha3n o* ch ekui77y7+l2h9fwcharge and the silk

  A proton carries a

  The model of the atome )/kh+ tw) xjf3-mrkr shows a

  A neutral atom always hh y f*;c0 m*k)ktnu;wvas

  An atom has more electrons than gfk uc5fe5j l6)c01vvprotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei ar5sn81 r3b0lsqlz vawsl-( nx5e referred to al8rl3n-avl 5 ss0z q1s(5 wxnbs

  Materials in which the electrons are bound very loosely to the nuclei a k h*f(sh zzxs6 )0ahl2y2w1drnd can move about freely within the materia10 fhhdzkzws26 hxra* 2yls( )l are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thev w ct uiry:gq:*;./dt end of the metal ba:u wgd/irct;tvqy*: .r farthest from the charged rod will be charged

  Sphere A carries a net posito(,)x0 lnen; im6si:khx s5ld ive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is c sihdx;s n)o5el(ki6n mx,: l0orrect?

  How can a negatively charged rod charge an electroscope posi+ 5fag3m.- aygzuclg , -qo/lvtively?

  An originally neutral electroscope w9sdu/o r,3jh fz2s x kov9-k)k sy,v(is briefly touched with a positively charged go(9xvf z3kk wkj 2su/y-, s)9 ovhs,drlass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively charg-qpah kfr)9 mfuo1*n.ed glass rod is held near it. After th*upm ).hqr o1afn-fk9e glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separabu( j(k.thd*t me;8e ute. Then a negative object is brought near the electroscope, but does not toucht*e h mut (8ujdb.e;(k it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutralv4xqd 8k*6gpf 0ivh,v metallic ball rolls straight toward the object, but stops before it touches it. A second 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 tou*f6pxqvvk0i gh 84d v,ch 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 oa0pc;r-6+a vj dgu l*w;nzt+rf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.hp:-x u5bo,/cy a/ eyx The first charge is larger in magnitude than the second ca/:hxx bo 5e/uyc,-py harge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ne0ajwoq+ -5vlkif9 * ggar each other on an insulated table. Which statement best describes the electrostatic force 0a +o*fj-g9 kq5gilvw between them?

  Two charged objects attract each other with a cejz:erued1mxd9sdg 49.s3p 1 qrtain force. If the charges on both obe z.xq1d1r j 9d3sep9:4msudgjects are doubled with no change in separation, the force between them

  Two charges are separated by a distn;+fevt wzh,4d 7fw+9 r,8).maghmq eeb*jqi ance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new muturwqegbh 7,ti+;+fhmdva)e.z 9ej m8f,4wn q*al forces?

  Two charged objects attract 5/ 9rap6ce gn l97kxtoeach 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 t 9prg an5ckex7l/t o69heir centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separatn cbz) z+7q 3)oyrcxyk cn0/;5 eqmk9ied by a distance of 1.0 m. What happens to the magnitude of the force on the proton ifqeqnybz9+r7 )0i)c5mc z/ n3xok;cy k a second electron is placed next to the first electron?

  An electron and a proton are separated by 84ljz,i uu obd7z hnzkuxd r ):lhv5./m26qm7a distance of 1.0 m. What happens to the magnitude of the force m2u dkzzo5i xqlld48uzr v m,6 /u.b:h7hn7j)on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separate w 5)ejt:k4j9sdu8udk1hq+ qld by a distance of 1.0 m. What happens to the size of the force on the proton ifu9jht w 8lqj ku41sk:q)dd+e5 the electron is moved 0.50 m closer to the proton?

  A point charge of +Q isw 8 qnlpr5s6-w placed at the center of a square. When a second point charge of -Q is placed at one of-rnq 58w6pwsl 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 charges 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 centroid of an equilateral t)u my6hql7xxbd1 tv ;-riangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center cuyv;b 1xl t7)h6 d-qmxharge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector8/9ar gh h.uo6 .rceropyz /y(?

  At twice the distance from a point a 9j8p :5pl6t;ihfjgs charge, the strength of the electric field

  Is it possible to have a zero electric field na:ar;usxe: a:t9i(jvalue between a negative and positive charge along the line joining(sajx:a;:9i erna:t u the two charges?

  Is it possible to have a zero elect 9fj8y 6eccvy2ric field value between two positive charges along the line joi 2 y9vycfc68jening the two charges?

  Electric field lines near psitivrou2 5sf* fm4mdnp55e e point charges

  The electric field shownsjiv58ffjp 0y(-:l)3 qjkz8hbjd gd6

  Can electric field lines intersect in frru x (s (jh99xtwkjm3,ee space?

  A solid block of metal in elq2vdcs*2 r /iqectrostatic equilibrium is placed in a uniform electric field. Give a statsic q2q2*d r/vement concerning the electric field in the block's interior.

  If a solid metal sphere an)x-j.w:buu nqb 8t.( irijx7bam:9hz d a hollow metal sphere of equal diameters are each given the -z)a( 8r7uq .9 ub:xjmwi:xt hijn b.bsame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unif q/;ayrlr ,,ft*d2mrn(zj 9xaorm electric field is directed straight upward. What can be said concerning the charge on the block'rx nz ,ld9*a;2y,/(tmjrraf q s top surface?

  If a conductor is in electrostatic equxp:(ksax50p h*h g tp tpij38-xtjs6 m) )yx5jilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounlazm(b/ -7v9 wx0mk n1 n+ gs,tq.igdbded. As compared to the case without the hollow sphere, the electric fiel n(dg a,7n- /01sbqtzgx+9w. b kimmlvd at a point directly above the hollow sphere has

State three properties of cmd3dhcfo6xl)2 * q*seonductors in static equilibrium.

State Gauss's law.

  The charge carried by one el43(qyw d j/gvqectron 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 -x 4era k,7y x 17+lzjmor0huwanc1 e0of +2.00 mC. How many more protons than electr-ez7rw0j7 o1,4h 0k+e1 malnxcxayr uons does this piece of plastic have?

  What is the charge oh1e2y7p l+hg+ox ,n;)s xjuq un 1 kg of protons?

  An atomic nucleus has a y-80: r7tdeulixy/ 5 jwsz.mq charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge val :i;zwgy.wj*t e/o6o 6x8uioejn-8 v lues of 2.0 and -4.0 mC, respectively. What is the magnitude of o*8gjox/-iezi :jtl8unwe y6o6.;v w the electric force between them?

  A 1.0-C charge is 15 m fro hot4t .e6ps(bm a second charge, and the force between them is 1.0 N.4ph to.t es(b6 What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apa j-t wc+kj1u.pz:sct r:ltco9 7ttz2/rt are they?

  The force between a 7wzt( uto *8zy$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apa+cetrv*h x:e ,jw2hs: rt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is e,t*cr:hwv + x2sej h:the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first e;hylelvn7 h j4ylo wmx)w80yhz,)4 .charge is at the origin, the seyyl )y.xwhow74 v)4zh8nlhejem, 0 l; cond to the right at x = 50 cm, and the third is 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 placed on the x-axis. A charge ofgcrd 78/vm*ury4wat1 b7b- yz(ykpc ( +2.0 mC is placed at the origin, -2.0 m C to t8cdkcb41gyzb- 7yr(/w r7p*amtvuy (he 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 locatakjl 775rxpk3ed at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.0 x 5kjlkr77p3a0 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at qw k )l+6xvq- oy7fyj/the center of a square, and a second point charge of -Q is placed at the upper-left corner. It + fx/k)y-qoy6qwjv 7 lis observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude 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); f4)n jpa *h3ltQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mal)anj f3tph4 *gnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, irs / ((qlkpb50); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is th5i/qspr(l( kbe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticeqbm9z d(akb8s59thsxr 4d as2./zn1 ds of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force wzbhtxam5sz.s rkdn49d91 s( q2b8/a dhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separa l4zw9 nmxcj(puyh/7 0ted by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q su 9p z(m7j/yl h40wncuxch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. W m,cox;7 jiqqyel wqtl2-+4r)here on the x-axis can a third charge be placed so the net q o l;,qtxcley7mwrj+q) 4-i2 force on it is zero?

  Charge +2q is placed at the origc*lpt3 w7t:-p4ay qtj in and charge -q is placed at x = 2a. Where can a thi3p7tl*aq4pj wc- yt t:rd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.03b8 *j-;u;c:b e-cllxmbpo yd g. A total 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 for k b:lqoajgew7);ufiwv 6i* -fl3uhjk,k513fce of gravity by the attraction of a fixed proton se -1wu)uvbk6 aof3*lg7li;fk,jk wqj5i :fh 3ome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nona e6otg g m2(46-gkemqconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglqo4 2 ge-g(m6 amk6egte between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitud1eo wbg3*kh0scwobfb : w81,optq , m6e of the electric field at a distance of 1.0 m from thbqo hw3e1:wo*b6og,s0fcmp b8w 1, tk e nucleus?

  What are the magnitude and direc7r.mdb) kf be6f1d5f ytion of the electric field at a distance of 1.50 m fr1m 7)efk5 b.fd6ybdf rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude osd gljh6x6 g.(f the electric field athx s (g66gl.dj the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wshb95c l pynew2y8+s/6r+rj shat is the direction of the e l+6yhn 8rsrybws jc9s5e/2p+ lectric field?

  A 5.0-C charge is 10 m from a small test charge. What is th) apd/g pk6 h9;8ouz /dns1faze magnitude of the force experienced by a 1.0 nC charge placed at the location kauhd/)p a gz6s npof 89;1zd/of the test charge?

  Two point charges each have a value of 3.0 C and are se glhu(mfoq8/g5hf do3a.z 8:h,gs k2 eparated by a distance of 4.0 m. What is the electric field at a point midway bet3,:flom 2gdha hehk qzu(8gf.s5 og8 /ween the two charges?

  A 5.0-mC charge is placed at the 0 kr:c+r6**ju qr wsd :zcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at k6juwzsc*qr:* r+ d:rthe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cmvn 67t(tlsfa9 mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the eleat 7t sf(6vnl9ctric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an vu .rc:v1ef d0)20astabuwq /d x = 0.20 m. What is:v)w0u euv/.tbd scrfaa q210 the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarpcd( o0ozwd;1s ld 0pu, ,:gege of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at thgdos;zp0dwud:, 0 ,ego cl(1 pe center of the square.

  Consider a square which is 1.0 m on a side. Charge0rggu fy i;o65s 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 5iof g y6g;r0uat (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in as 7 x,:p47b ytuoj9atb uniform electric fp 79txs7a 4t,:byobjuield. What is the magnitude of this electric field?

  A particle with a ch-j f/a a)j:kuiqng3) x.crg3jr 1mg,zarge of 4.0 mC has a mass 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 0.120 g is placsn4 l1hdhkr2-4m 3pyped in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspe14mnh -2lrsp yh43dpk nded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is em ( geys),r f:*,ywljplaced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude andfw,rg*ees y lj:)y ,(m direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of 1ss57e n)bslh+2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphe7 b)5ss1lsenh re's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electr :qj;+msn4ss2 y egyuw7iux 8,ic field 6.0 cm from yqx +iu se,m874g js;sw2n uy:the center of the sphere?