State the law of consers m9s 5s,kc) vio(;ygwvation of electric charge.

  Is it possible for two negativeqa1l; x584n3 kniopxm charges to attract each other?

  Is it possible for a positive and a negative charge to attractvu8 e3) zviuz :h8c4ru each other?

  A glass rod is rubbed wit2bdc7-ww4z k/w1hgbb dsw(3f da pn;5h a piece of silk. During the process the glass rod acquires a posigkfa dhds7w4 1;b(w b5 cp-zd 23/wwbntive charge and the silk

  A proton carries a

  The model of the atomut+*6 e hpmj. (ixoer3 shows a

  A neutral atom always hag3f 4vs;7ff ljro1(v+vi4vrc s

  An atom has more elecq5a qn5,*thc uvmz:a 9trons than protons. The atom is

  Materials in which the elatebpv z 8 7mz 0p+ynv0+4q8wtectrons are bound very tightly to the nuclei are referred to 488zqven wmbpyv zt7+p+0 ta0as

  Materials in which the electrons are bound very lgb;tg a+zp m2y :9l/twe ,gm-moosely to the nuclei and can move aboutyzag: tpm-2 e/;+mml gbg tw,9 freely within the material are referred to as

  A negatively charged rod is brought near one end of 0(pd bykdh(p6an uncharged metal bar. The end of h(pd60kby( d pthe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Togtfmdne;aan0 8v(e4 so,a , 9hey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that 9 go4 voe (enm,d0;nsa,taf8ais grounded. Which statement is correct?

  How can a negatively charged rod charge an elev eg/0c*b w6rb j5t;qdctroscope positively?

  An originally neutral electroscope is briefly touched with a positively charg. sssonh9h 6a-rvt3; ridm; s,ed glass rod. The,sdn-s 6 rvh; smr s.;ho3ati9 electroscope

  An originally neutral electroscope is grounded briefly while a positively b0 je5b;veaf/charged glass rod is held near it. After the glass rod is removvb fj5b/e ;ae0ed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. -1-klxxw xu; ql0w 4vc c7ucn:Then a negative object is brought near the electroscope, but does not touch it. Wwxv7; u:kl -w c -1nxc4uqlxc0hat happens to the leaves?

  A large negatively charged object is placed oluw m)1:jws9qrc m5w 5n an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral mmq 5 51) sjuw9cm:wlwretallic 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 Couja cd ;:8f-kdalomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sei)*0slc +l4e ;r(lsf7 t swzm6;adlynparated by a distance d. The first charge is larger in;l cs;s)d(lf 4wltya0s mzne+i7*l6 r magnitude than the second charge.

  Sphere A carries a net charge and sphere B ins7a3 4 km 3ngue o73dxe.r5des neutral. They are placed near each other on an insulated table. Which statement best describes the elgo5xar3nne7 34k3 esud.7 me dectrostatic force between them?

  Two charged objects attract each othe* bpziiteo 9f9:n 8ims ,1c em+r1qu2tr with a certain force. If the charges on both objects are doubled with no change in separation, the force betwef o1n9tit 19mr2z p8ieeibs* +qcm,u:en them

  Two charges are separated by a distance d and exert x*66kaf/gq9t t, dtsrp8e5s f mutual attractive forces of F on each other. If the charges are separated by ag/* ftx8q6t9r56ftd e spk,sa distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fol: q,o: 3/z*h,yjm2i zlal wyzrce F. What happens to the force between them if one chargeli:z,3zjwl q* 2,y:z ola mh/y is doubled, the other charge is tripled, and 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 separated by a distance of 1.0 m. W5lxedq7*g2nxi u* wocip 6srhz;d(;2hat happens to the magnitude of the force onz ldhx;*;2 wo6 cni5sgqrpd(i*ex u72 the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated bq8yap0 tew+z( y a distance of 1.0 m. What happens to the magnitude of the force on the first electron if 0ze (t+wp 8qaya second electron is placed next to the proton?

  An electron and a proton are separated by a distangrcz0 lj-n:zc k5t,f0 ce of 1.0 m. What happens to the size of the-rcg,k00z c 5zlftnj : force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is p rzx(po-5 g8kxlaced at the center of a square. 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 (kx p58goz -rxN 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 triangle.b 5d9xh*bz:38k s b aiiw1s0as 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 charge due to a t xhadkia ib 1s 3:5sbs9*0zbw8hird charge of +Q placed at one of the other vertices?

  Which of the followinyi4hgmu3l027x:7lh)osf p(pa il h : pg is not a vector?

  At twice the distance from a point charge, the str)fgg tr/f4 m2c tpj+;nength of the electric field

  Is it possible to have a zero electric field value between a negative /8ih3 9h zaos sst* ;xnv7igt:and positive charge 3t/;i asgthon8s: x* isv9zh7along the line joining the two charges?

  Is it possible to have a zero electric field vals-7t4 erm(fn f 3g1re(wlp.m hue between two positive charges along the line joining the two chargmgfr4( lp1er7 .wesnt 3(hfm-es?

  Electric field lines near psitiv84yidmjd tcl4.24bns 104kt2fcx eb ce point charges

  The electric field sh;( btk40encx 7*oodphown

  Can electric field lines intersect in free spap*wm:u, v8kii rwa*+sce?

  A solid block of metau 0un4j d0aqz b9.fyv(l in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning tvfu z40dn9 j u.b(qay0he electric field in the block's interior.

  If a solid metal sphere and a hollow metag fbi a7z;b-/al sphere of equal diameters are each given the same charge, the electric field (E) midway betz- f7 i;bagb/aween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform el-cgxz z )7)djjectric field is directed straight upward. What can be said concerning the charge on7)dj-gczj )xz the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chara(v +-t9kpxsw57cbd rge

  A positive point charge is enclosed in ar no u2q7uw(ze.qn.q; hollow metallic sphere that is grounded. As compared to the case without the hol72 qou .;n qwqze.u(rnlow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condp .c ko3ysxdo 0(dm/b4uctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is7y96o)fbh f)g pzi/i 3lcq+de $e = -1.6 \times 10^{-19} \; C$. 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. How many more protons than qytd j9b7un) tq4l1* xelectrons doest4qjd7xql) y t bn19u* this piece of plastic have?

  What is the charge on 1 kg ,f9ac cooio2)of protons?

  An atomic nucleus has a chargec-f9*o:cyd i270fv wb ov0 icj 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 0tafxzf3(tito yl .70f9ab* m charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric ifb yf.m(7 x0taa3f *0 tltoz9force between them?

  A 1.0-C charge is 15 m from a gbdi792amk5ee(z ui5 second charge, and the force between them is 1.0 N. What is the magnimbke2g aze759dui5 ( itude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How farxp; spsj51ry 9(0ezv )uwtdiz) p,:n w apart are they?

  The force between a dsd+ 1o jsyr*oa4yy:1$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,dwiqdw 0ge w5r(w ja(g.,e8t3 experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric foqgwe(.8t ( ww0w erjdad35,girce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis.0 rr;lzj px19h; yzs8r The first charge is at the ori zhrrs1;yl8zp 9rx0;jgin, 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 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mq0 byx-v ye8e:C is placed at the origin, -2.0 m C to the right at x = 50 cm, and +yex0 -8 vqeby: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 xaz/ ifs.ovku.kl -z iz+7v5( positions: Q1 = 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 force on t(fo -kilz7zzs ka+x vu .v.5i/he 3.00-mC charge?

  A point charge of +Q is ;ulaysl ec6 nn/45be; 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 ifnsea ;n ly/b l5c46;ue 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, 0.10 m); Q3 = 5.0 nC 9l4w ce* w8v9j3bytr ois at v jeowwbtc9 * l3yr948(0, 0). 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, 0.10 m); Q3 = 5.0 yv 8g *x )7)frwcpn;kznC is at (0, vk;8cn*w)p r7z)y gx f0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the r )v w)u8odlhajw, ur;bwq:x i.wh 7(+vertices of an equilateral triangle which measures 30 cm on a side. What u+v;h)ah(bo jq,7x r:di) wrwu lww.8 is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whij jg/ejm 95wv:mhh 0(cch are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fc e/wm95:(jhvg0mh j jorce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C q- (l wxntj 00eh:oj,zcharge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force onh:oj(0tqn-w0,e j lxz it is zero?

  Charge +2q is placed at the origin and charge -q is placeq;;7w fry5h;t0jw s jjd at x = 2a. Where can a third positive charge +q be placed so fw h ;js50wj7try;; jqthat the force on it is zero?

  A copper penny has a mass of 3.0 g. A 72hrl p t7zk.t. 1s,zo a2txuptotal 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 attractgf 01 pyqwy 3nlt.-t d/t+shn,( q ,elva:gvu;ion of a fixed proton some distance above it. How far above uey;v- fhnty +q tv .g: 10dw/lnpagl3, q,s(tthe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduhehzk 6y 1f0ppdb b,l1 c olw8p)87z5ncting threads which are 30 cm lon wblech11,lzhp5dzp y887n6 )kp f 0bog. Both are given identical 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 hasy5: saom7mc,5 0m:ng+hh qiau a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from5uh go:y i+c q7 ,h5mmaanms0: the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.vlp; larxqg1mx62 n6v / fo.d350 m from a 50.0-nC r1/62dva pol q gx.m;x6nl3 vfcharge?

  A 5.0-C charge is 10 m from a smallbfielzl 1m8wx * h*v7/ta24ja test charge. What is the magnitude of the electric field at the location ofhi zt *lbe4vwm*ja 1lfa287 x/ the test charge?

  A 5.0-C charge is 10 m from a small test zf6c-z(y6yd gcharge. What is the direction of the electric figyzy6(z6df- celd?

  A 5.0-C charge is 10 5rx y):qr5wjm*vn/iejv.uyc *m t* 5fm from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at5e/u*wny:xr y mvmr*qti5.jj )*v5fc the location of the test charge?

  Two point charges each have a value of 3.0 C and are7f9d2b sybb 2s separated by a distance of 4.0 m. What is the electric field at a point midb7sdbs9b y f22way between the two charges?

  A 5.0-mC charge is placed at the 0 cm m2 ;1khhbo;amr b-ga m6o/u6 zdark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?;uaa1h z;6ob6hm2mbkg or/ d-

  A 5.0-mC charge is placed at the 0 cm mark+e )qwo2zv 2w*u1v pmu 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 charg*ueuv)2vpo1wq +w2z mes is the electric field zero?

  Two point charges of +3.0 mCwu-9m- rttmhko5hbs *w; 8: ly and -7.0 mC are placed at x = 0 and x = 0.20 m. What i8b-m;th-*y uw: hlmok sr5w9ts the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square bo 2c9knv/o6 zl l5d/) 7pqctvof side 0.50 m. The last corner is oc) cov pz l/2do/kcn95q 6vlbt7cupied 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 sid0 y ey2dgksji: f3w9ng;oe0b/ e. Charges are placed at the corners of the square as follows: +4.0 mCg;d i9be kywgo:jfy 0/ 2ns0e3 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 wheq-3 2wga7aegen it is placed in a uniform electric field. What is the magnitude of this elect eg2eqwaa7g3-ric field?

  A particle with a charl;, mk+u as*nvida) c6ge 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 placed in an electric field of 6000 N/C p w3l8ytu3*pe eointing downward. Wh3*teup y8 elw3at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2g:2 l3e su*omir4 tf m/zyp91q.00 nC. The ball is placed insiiurz o4qfts9 *:ym3g/ p2m le1de a uniform electric 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 carries a charge of +2.0 mC. What is the map qa 65bp()0tf4fevmw7 h igv4gnitude of the electric field 5.0 cm from the(i6pevp07hf a5bwv 4gt)4fqm sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge-yzxem//o58a,amr+ankg x) ne*(mqw of 3.0 mC. What is the electric field /5wex -,xq)+g n* maarmz(o/nekmya 86.0 cm from the center of the sphere?