State the law of conservation of electric ch9 ttp;nok*8wuarge.

  Is it possible for two negative ch+ azwonj ;u*j m3q/k:fvhryc:c0ef 24 arges to attract each other?

  Is it possible for a positive and a negative charge to attract each ot9 b,hwod8myj i4mx0t 7her?

  A glass rod is rubbed with a piece of silk.db, n ncxe4(ha.ec- ;q During the process the glass rod acquires a positive charge and the scn.ee-hab ;cq x(d,4 nilk

  A proton carries a

  The model of the atoyl3q 8s rl 55u48m suckaomn79m shows a

  A neutral atom alwayxup9 v;uesjq x;sim l y3b6rix/ .2b2:s has

  An atom has more electrons than protons. The ato:qwlk3 b yah)8f-l8 19tvmekwm is

  Materials in which the electrons are bound vep/j)i7n mtu myh 8wewk1 7h8,bry tightly to the nuclei are referre8u78npe 1/mk 7yw hh)miw,t bjd to as

  Materials in which the electrons are bound very loosely to the nuclei and cabz3 mxp e0s:shtb1qhc5hn/ ) .n move about freely within the mam)3tch: ss5qbz xhp/ehb1.0 n terial are referred to as

  A negatively charged rod is brought near one end of an unched5 t 9nyan2n-arged metal bar. The end of the metal bar farthest from the charged rod will be chad52ntyn- e9 narged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plaz -1329f tdxtsgaixe0 ced near each other on an insula1a9tsxz i-g d f0txe32ted table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargev,kz9rj( kdov2+1mv o an electroscope positively?

  An originally neutral electroscope is briefly toucrbfwxzi+- *x(9vo f- ched with a positively charged glass rod. The ele(+vx iw9czor fx-b* -fctroscope

  An originally neutral electroscope is grounded briefly while a positively charg q u5+ w5vq(en;z.veq j54 7(zknoeupded glass rod is held near it. After the glass rod is removed, the electroscopez.eq(qv(4+n5evozu q n5;e75uj d p kw

  A positive object touches a neutral electroscope, and the leaves ik4-g2 1a u*eijr kvz2separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to th*zr1ku g e4a vi2i-k2je leaves?

  A large negatively charged object is placed on 0wlt,m e k w2i-bhtb7+zw8j6m 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 thewemw-wtz72+km6ij,0bhbl 8t 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 the0bzrbc, hudca/qu 2/* Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is (pkql vn:7awwum g*;s cw56+f larger in magnitude than the splw7 n(6:cq+u5mwk* as vwg; fecond charge.

  Sphere A carries a net charge and sph1e96fqx9ohg jswat) s9 n8x7ef f7i s( y;a9rgere B is neutral. They are placed near each other on an insula;19hfwxoesq99 ty ifn s8gasx7 9g r6e(jf)7ated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If t6dqt uk8 rt9/vv1zlj0he charges on both objects are doubled with no change intjq/ 1z96v0 vl 8udtkr separation, the force between them

  Two charges are separated by a distancequ *e3apu9cd+.d65i:qs+gkm nu; ij :aqdtm- d and exert mutual attractive forces of F 5i*.qae m:uuq; id mp:6 nj c3qtgku-+d+sad9on each other. 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 force 0xonoo2 x8po;p 1jq;e F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwn2xex8j o; 0 poqop;1oeen their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separ 1k6qo-mze *ebated 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 fireb- mqoz*6ek1 st electron?

  An electron and a proton are separated by a distance of 1.0/lgxqbdm): hxhtsm3d 51 b,t,l 7p6rl m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton1m lds6p/ ,xh7m l3)hrltd,tqgb:5 bx ?

  An electron and a proton are separated by a distance os etx-cav a8k*a 5s5wbv/qgph*3 6 p3jf 1.0 m. What happens to the size of the forcp* e6g ba cjwk8*vxp5h5vs aaq/-s3t3 e 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 square. When a secon9kxloxiz)p4 6d 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 m4ox)z ix6 kl9pagnitude 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 equilater z)*m+lt4:g4 rrmmbh cb4oe8w al triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forceochr48l)m4z+m*b wm ebtr :g4 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 qljv (o3cy2s8not a vector?

  At twice the distance from a point charge, the strength of the electric fit7aj/mv h1uuk;5 0m * z1ijdw0rujh: jeld

  Is it possible to have a zero electric field v 5:duojub-c(bd-ccl( alue between a negative and positive charge along the line joinin-ud:(dcc lcj(b -5obug the two charges?

  Is it possible to have a zero electric field value between two positive charg yf295ybgdy .kes along tgbk 25y.9yyd fhe line joining the two charges?

  Electric field lines near psitive point chargsydkj; ejyn3-n3n/m)j/t; l aes

  The electric field sh5zdj khd,ws+4 own

  Can electric field lines intersect in wfa1r, vz2 rlv ,su3;rfree space?

  A solid block of metal in electrostatic equilibrium is placls 0px8ixkf1v / c0qa: ko7t,ded in a uniform electric field. Give a statement concerning the electric fieldki v0d 80apx:kq l1sxf o/7ct, in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame mbd:+o 6w8h la/vda2iters are each given the same chard6 a/lovim8 w:b2+hdage, 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 unifo al cwu5n-tum1+c:xl6rm electric field is directed straight upward. What can be sai-cwcl5 6auxul m1t:+nd concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cha8:o2matly7k lrge

  A positive point charge is enclosed in a hollow metallic sphere that is gro+ybiw16 v22pf yty9 5jpmj(fqunded. As compared to thev yj56t yjqf12p2w y9ip+bf(m case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors inom c(,q *ycam)dmh4h7l 65iw w static equilibrium.

State Gauss's law.

  The charge carried by one elegbd eb-h;olpu07 gr0qs: 4: cyctron 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 mC.zu1:h 9uzgj4cq9i n3h How many more protons than electrons does q u:hh9 g19ujz3nzci4 this piece of plastic have?

  What is the charge on 1 kg of proton ,5o5 5lcviu-zp5qxl gs?

  An atomic nucleus has a charg7o6 (bitu) 2q7umt hgke 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 values of 2.0 and -4.0que0y89:h drf:cyfw)2o kbi. mC, respectivelyfdby oky0hr qw9f::u cie).82. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the*lk*bqgekk -)4+s 1pjva u io4 force between them is 1.0 N. What is the magnitude of the second chargkj a*kiqbg4e14ukvlpo) s- +*e?

  Two 1.0-C charges have a force betweikfzs8 ;7hpjd o,7tmj 3 q(,wyen them of 1.0 N. How far apart are they?

  The force between a 1cn 8; vww/th:9otw yw$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exh; kk6 -trj.nhperience a 1.0-N force. If they are moved to a new separation of 8.0 khk;trj hn.-6 cm, what is the electric force between them?

  Three identical pointo3tws.au;)m m charges of 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 ma;woa)u smt m.3rk. 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. -imq,m64 co e+ krueu6 A charge of +2.0 mC is placed at the origin, -2.0 m C to thiu6 4o qre-mc,k6m ue+e 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: Q1mm6j+,: zc t8u xi9zhk = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. cmz8z9xt,+k hj: 6ium What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q *),3opjeg4dns6 us w h i**rzzis placed at the center of a square, 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 magnitude of the force that acts on the center charge ndrpz se)*3 s,wg*z*uoij h 46if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.36x1bk 4ne4qex+vxzi5bk7 sn:(2 tp ;+artkko0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC cha;+qtb+2 e4r za7k vn4xoi 6ksep kkn(5t1xb:xrge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mcn6mz6s d .8jk); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC c.n8cd 6zjsk6m harge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral t(g q-l5 m-eg4u ( vza-8rc.-pt ui i1h8ehzqmoriangle which measures 30 cm on a side. What is tirgg 1h4i v-u.q( -ape -mcz8qm5t(8ohl-ue z he magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges i;x* at07vm yna29v2 fw-cw jbof +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a2a- 2atw*wvy;xnj7 m9 bcvif0 charge of -Q such 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 iuq,vhp jo ,wcbz b((55s at x = 4.0 m. Where on the x-axis can a thirdw(bo5j ,,b5vh(cz qup charge 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. Wheo sf5uw2 +yzt3re can a third positive charge +q be placed so that the force sfz+y to25w 3uon it is zero?

  A copper penny has a mass of ,i m)8m nyp* 2lut g4ng,w1wuvrh:,ar ig7wc83.0 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 force of gravity by the attraction of a fiw;n2 jjd(daj1d ml*n6xed proton some distance above it.d;d wj1(62mlj*d naj n How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductingf4nkg fh*,r)v threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion for,fk *hn 4grf)vces 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. What is the magnitude of the electric z,a:*x /i 2pxacbvqbt82 ma h7fzpxt:vm*babahq/x ,c7i a 282ield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of tad;kgswj,7(2law-(u qm15bz g p u)w1.50 m from a 50.0-nC chargwwg1mpab7(zuu-sk qjd, g)t ;a w2(l5 e?

  A 5.0-C charge is 10 m from a small 2sla,tfq+ l:taz j)m u,. b6hjtest charge. What is the magnitude of the electric field at the location of the test charge?2tlhzf sjaa +: q),b,.ltum6j

  A 5.0-C charge is 10 m from a small test charge. What is the direction 9,l 1blk vc(kjf6w,xq of the elck,xqwf ll jb9 k,1v(6ectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudi u3u5ldrfia+ vd4-;ce of the force experienced by a 1.0 nC charge placed avl+a-cfid r; iudu 345t the location of the test charge?

  Two point charges each have a value of 3.0 C and are separa+ xs5 oz0sm7lited by a distance of 4.0 m. What is the electric field at a po5s0 zl+m x7sioint midway between the two charges?

  A 5.0-mC charge is placed h seua,4-/ d j:igdct6at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 5 su:djgi-thc6,/e4 da0 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 stiv c*wu +cci:u kok,o3hk*6zz1ck and a -4.0 mC charge is placed at the 50 cm mark. At what point on +c:6,ucw*kzh ckv*1uok iz3o a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 7t1gks0 yt3fl and x = 0.20 m. What is the magnitude of the electric field at the point midway between themgstl 0tkf17y3?

  Three 3.0 mC charges are at the th+a;gvm oztwx61g .0b jree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the c.6j a 1zv+gtw0x mgo;benter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners ov)rtyg( cyqc r gp:(k5/ ae:5wf the square as follows: +4.0 :ya 5t:r(g5e(yvcw qgr k/)pc 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 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 elect)- jk, own1oeiou (o, .v)twbdric field. What is the magnitude of this electric fwb nwoo1(i-u,kj.))deto v,oield?

  A particle with a charge of zm /w8,wvi433wzus (2r tlmwi algn-. 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 v9o,4.tkz6*fb7hqfgbnf2 b hv1+ cmwmass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?k91 bvfn,z+ bq 7hw* htm4.fvofb62gc

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placeye.qg +w 4xu aetij , x7r(+9dyzdwi:0d inside a uniform electric field, and is suspended against the force of gravity. What are ttz,:qye (7 +4 0rd9gdewjuwx+x.iiyahe magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is te 84aev pr(m 2ea4vvk6he magnitude of the electric field 5.0 cm from the spheree r2av48vpa6(em k ve4's surface?

  A metal sphere of radiuju y) r+cy-;nvs 2.0 cm carries a charge of 3.0 mC. What is the electric fic-;n) j+ry uyveld 6.0 cm from the center of the sphere?