State the law of conser(:p uny 1aaoj.g4qbq gy *w6*qvation of electric charge.

  Is it possible for two negative charges to attract eaf/znt*52hl x5ky (ankch other?

  Is it possible for a positive and a neg3 ww0vgh-q,pz idz9:hative charge to attract each other?

  A glass rod is rubbed with a piece of be+o29i t , 9govph,pn3rwka( silk. During the process the glass rod acquires a positive chaenroao,ih b pv3,pg t9(92+ kwrge and the silk

  A proton carries a

  The model of the atom shop z1rr/qit3 ;dws a

  A neutral atom alwayxi q 1e0qd;kz1s has

  An atom has more electrons than protons. T0 pz ;5zr+ehw7hm6h xvi) ,vwkhe atom is

  Materials in which the electrons are bound very tightly to the n3d*5k)0t:y7it9dpr fa io vbeuclei are referred9v rt)dabt f5i*oik:p0e3y 7d to as

  Materials in which the electrons are bound very loosely to themcf v3l)cg /o:m;f/ ub 4p.bkh nuclei and can move about freely within the material are referred t /fc . gucpbhf)4/mvm;3 k:bolo as

  A negatively charged rod is brought near one end of an uncharged metal bar. f:3,clh,u4 hb 3opsbkl m c q8:hg3,deThe end of the metal bar farthest from the chargele,chlkosp3 fhbu3,m: c h ,8d:b4g3qd rod will be charged

  Sphere A carries a net positive charge, an5def+0;i fv mfd sphere B is neutral. They are placed near each other on an iie0f5v ffm; +dnsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope px5lg1d b5ddv( ositively?

  An originally neutral electrml*qtj0+8 k/+*eu b/rp ipv proscope is briefly touched with a positively charged glass rod. /0+pmruqrv/ l ipe* *+bjpt8kThe electroscope

  An originally neutral electroscope is grounded briefly while a pucfi0)x yq bg nv*a4+;ositively charged *fix+gu nq acb0;v)4yglass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepay hc/o7jsw3met3m;fr s j7) h-rate. Then a negative object is3h7t je3c;7wfhrjyos mm)/ -s brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is place -f,epg3b1kju(c -m5eig)j xu d on an insulated table. A neutral 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 bal upie)x (ucgj-m1ke5g ,-3fjbl 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 C/ ( w(vvxl3 5 *kphiqpu,(qj:4lxiwf koulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a d mu5jf; fcw-c 7:emu0jistance d. The first charge is larger in magnit-jfc:j;umeu50 m 7cfw ude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plgeq/brr 8k6i v0q :r1laced near each other on an insulated table. lq g/0rvbir16 qer:k 8Which statement best describes the electrostatic force between them?

  Two charged objects attract each othiw-v .ax;o9ne5lt vf /er with a certain force. If the charges on both objects are doubled with no change in seiatownx-5 v9l f ;v/e.paration, the force between them

  Two charges are separated by a +6ud-2tr( sb)pn 0 hviiz wu.qrnkr+8distance d and exert mutual attractive forces of F on each other(r+hwq.sbvik-riz p+du2n 0u86 n)tr. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fob zwv6 gg7skzo;9 .r io6mqv/9rce F. What happens to the force between them if one charge is doubled, the other charge is tripled, ki9zbo smo6.v/wrv 9 q6g7z;gand the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sepa*9a4 rvmqjg u45qma:grated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron?mmgr:9uqa4g45j *q va

  An electron and a proton are separated by a distance:gg p/axb7;,ybx n,yz of 1.0 m. What happens to the magnitude of the forx,g:n7bbx yg/p az,y;ce on the first electron if a second electron is placed next to the proton?

  An electron and a proton 3sco4 dllk(1 pkd bq4ue- e/.kare separated by a distance of 1.0 m. What happens to the size of the force on the proton if t bk4kkpce4el-ddsl1o3uq/ ( .he electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whencs8ff 8fo */ zg6i7lebjib v68 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 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 squvl /g*s e8iij8zbofb 6 6f7f8care?

  A point charge of +Q is placed at the centroi4 50vst : ykqcpb5yvq 7s9*fesd of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force ofc59 vvsqp y bkstq:ye5f4s*70 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 vectormpf(; f r,fr-7k )nlkr?

  At twice the distance from a x x9fmye r/v;2wy/* knpoint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negoq( pje42/ nydz: 8aywa 1l/seative and positive charge alons :oe 2(/l8wpyz/ dy4aaqe1njg the line joining the two charges?

  Is it possible to havelfiu b-y- 1 n;d3iyt09.w nfdq a zero electric field value between two positive charges along the line f1.3;y-f-dlqw0ynibt 9 iudnjoining the two charges?

  Electric field lines near psitive poinc ) +dd0-hubvgt charges

  The electric field sv+/a)qjhj+x 0ck3mr dhown

  Can electric field lines ino q8vgg071 :zhjbict)ktmf, 7 tersect in free space?

  A solid block of metal i74po 6zqo m1xjn6ev /un electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block'qj4u6oen16 oz/vx m7 ps interior.

  If a solid metal sphere and a hollow metal spher4f (v6wgka w5hb pnu;9e of equal diameters are each given the samekpnw wu6 bf5(g9;a v4h 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 uniform el7;mmsbg:a 0 ;sitw1tg8o8j stectric field is directed straight up ja0 :;s;m87 ot8tmgig1bwsts ward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostaticgpx)96 .w c. n *jwj lq9qgvwwua0xk(- equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallvuhlf7wq3v, 8u8ns. ciyd;; sic sphere that is grounded. As compared to the case without the hollow spheu8,hd;iwl;ycs.v 83fu7n svqre, the electric field at a point directly above the hollow sphere has

State three properties of conduct iv10bs qt,d(*g (caacors in static equilibrium.

State Gauss's law.

  The charge carried by one electaue oqx0sb2m6 ib: 4s+ron 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 +2.00 m6 k5v7b q5edgoC. How many more protons than elece7 og5 qk6v5dbtrons does this piece of plastic have?

  What is the charge on 1 kg off6 zop:h9 +yyx protons?

  An atomic nucleus has a chargx01xupos+s qrbazn0d7w: 4rc 9gb;a4e of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepaf7i 1uxdr,h 4h9 (yh2qgechy;rated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the ei 4quhfgy7xc(e,h1 2;h r9ydhlectric force between them?

  A 1.0-C charge is 15 m from a second charg*gnsz9ecgc)5 u :b bhh6ps5x;e, and the force between them is 1.0 N. What is the magnitude of the second chargbs56s* xhh)c pzn9 geuc5:;b ge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart+ fuwlf6;r op/ are they?

  The force between a ou/k:u flvz)0je, w y5bnb. 4w$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cmju*e , ymjb4e4rq;*v i apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whj*4breiq e vj yum,*;4at is the electric force between them?

  Three identical point charges o.mbo0(z qbj l75izb v:f 2.0 mC are placed 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 the magnitude and direction of the electrostatic force which actsivjz z5mqlbb. (07b:o on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed4a kvx fp+rk/(qh8,c d at the 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 8+a,4p(vrhk /qcd fxk?

  Three point charges are located at the fo hm3)w2y zb0nbllowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x =mbz32h0 w)yn b -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point wdzx847o /;wwz djj 5f edxg)70ymtb8charge 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 magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lof5yd/gzj0)xd4 dzo8 8;betwm7x 7jwwwer-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is dhbd2x(3 : ix8a j3r f,jvd7hlat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force oj2dfjxd,7(rad3x 3 hhvi 8:lbn the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m3ioo/ .tf.*,m c kr;1 kzvwouj aab:b31fg6ei, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of toi t6f1: roia; ,w. m1 vc *g3jkoa3bk./uzfebhe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticd kmgwp; +an, v(tew26es of an equilateral triangle which measures 30 cm on a si;2wg(nt6 wvdk+pe, amde. What is the 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 m.ij5a;ge9e lm 1 At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fo5 lg9a1e eij;mrce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chap2nk3 d j*gw,arge is at x = 4.0 m. Where on the x-axis can a third charge3 pjwgn *2dka, be placed so the net force on it is zero?

  Charge +2q is placed at the origin and42tw wg qqhms(i, t.u; charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that thq tm ,iu4tg;w(wh q2s.e force on it is zero?

  A copper penny has a mass of 3.0 gk.e8ll3lclwk(a bs,.. 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 force ofmhh :7hlb. 4rv.*o zl k9kl0tw gravity by the attraction of a fixed proton some distance above it. How far above the electron is :*h7 r4 lhov.k .l0w9ml hkbtzthe proton?

  Two 0.20-g metal spheres are hung from a cqeu 7f9oc jpe8 /s5zq2ommon point by nonconducting threads which are 30 cm long. Both are given pj9o/ 7ues5ecq2qf8 zidentical charges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Whxs*ahse;2uom-2ih 3i-18 aqrgd,77 lyqacr wat is the magnitude of the electric field at a distance of 1.0 m from the nucleus? al-qiayxdsr2;i*,7 amg2 qocw7- u8s1hre 3h

  What are the magnitude and direction of the electrz -h +it47mxbric field at a distance of 1.50 m7m hrz4t+ -xib from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofq+ ib,p+g k tgq40a6gm the electric field at the location of the test biqg0m,+a qp g4tk+g6charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dijv1/-s3h;) e jrlzs d1hp) mpa8;paphrection of the electric flhpamjr p8he;ph -a;/dsvs1 zp)j13) ield?

  A 5.0-C charge is 10 m from a small test cha+4pm t nzqwf26rge. What is the magnitude of the force experienced by a 1.0 nC qnf2mtwz64 p+ charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are j m*p yosa79v8vll -e*qycj80g 8sjx-separated by a distance of 4.0 m. What is the electric field at a point midway between the tw*v -sjpy0yvol*87jasqe c -98jmglx8o charges?

  A 5.0-mC charge is placed at the 0 cm ti a1ne g;v:k g5rbal1x2.(bq mark of a meter stick and a -4.0 mC charge is placed at thevn xai1qbb1eg 2 k trg5.;a(:l 50 cm mark. What 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 anycqlj1vgxp(czi4 p8 9k o;)(id a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field z (p8;ig(9ovcxjk c)i q1z4plyero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 andy)va 8u7u cq-7k ooju+ x = 0.20 m. What is the magnitude of the electric fiec)8oa 7yuv7q k+uo-ujld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sm)iue37 ycy*u9i 5 smk,pye. lquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the ,u3sep )7yu9lkm *c5ieyi m.y electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges apk keadivxjt:s h+y,8m1mh dmq2+8ba98 0j4kre placed at the corners of the square as follows: +4.0 mC at (0, 0vk,+ajksk ym 8m ehdjt qxd848i1hbapm 0+92:); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (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 a uniform eo 3lvr; nn w: uqix2x74ggze*/lectric field. What is the magnitude of this elelvo47: xui ez;gr3* nw/qx2ng ctric field?

  A particle with a charge of 4.0 mC has a ma- i-p. 9uxml rd*kzx4t85ejw gss 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 placed in an electric fie74mh - n5;wvf7 g svgfbs;:(rdaw bzs-ld of 6000 N/C pointing downward. What charge must be placed ong 5wfd :(m-v anh vz7-4fr ss;7w;sbgb the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.ow(it8ej43c w+cxv 9 b The ball is placed inside a uniform electric field, and is suspendec+w8jo9 tb4 3wvxce (id against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of,u :br8z nxdgt b*+xo/mh9l6q +2.0 mC. What is the magnitude of the electric fib q/rux+ tzgo*89 h,:bxlm6ndeld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. fap; it,e 0erf1+ l*rfWhat is the electric field 6.0 cm from the center of the spre,i+af; fe1plft 0r*here?