State the law of conservation of electric46wqjm enbhrr/m1 (gnbiu2c 7n)( .h w charge.

  Is it possible for two negative charges he3;c5 s,zaer q,n.mibdj1/ r to attract each other?

  Is it possible for a positive and a negative charge to ae a8 ,:q 1gzp,04 p3skyjjhuohttract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod 2s/jivr;m, ig)a 4dgezj1ka(9 xdzz-acquires a positive charge andzmrz1dki a4ez,xj/sag 2v i j)9g;-d( the silk

  A proton carries a

  The model of the atom shdqd7; f p.lb6tows a

  A neutral atom always 8fgq awsrq( l(k5n+:j has

  An atom has more ele;ox;;dex dr e-ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refyu8q6 nz6 6egeerred tz66n8ug ey6qeo as

  Materials in which the electr5:jd2 )h5ef:njhid jq lfw)5w ons are bound very loosely to the nuclei and can move about freely within the material are referred to ahe dlhd)5jj w q:f:w52i5)njfs

  A negatively charged rod is brolsjjea -e )64mught near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will b- jajesle 46)me charged

  Sphere A carries a net positive charge, and pl+ rj czq5f37sphere B is neutral. They are placed near el5p7 jz3+cfqr ach other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chajf7pg0cp vh)l8 ;bdndnfw1/;ix :gy 3rged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posm/h / zkbw7j:6bla0ai itively charged i /hzbj7laa:/bm 0kw6 glass rod. The electroscope

  An originally neutral electroscope 7w3rq cd tn bi+;r/;zn cu6jm9is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopenj76cwmu;q3rrd /+;9 c n zibt

  A positive object touches a neutral elecyluil .ujpl9(id .tlz3y/rt )xg u0, n7y h(;ytroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the ljiy.. (tzg ;lly)l3ydxhu t9 p ,l07y( ruu/nieaves?

  A large negatively charged object is placed on an insulated q 6r5rw;*f9 ygt4hfqu table. A neutral metallic ball rolls straight toward the object, but stops beforyw*fg hu;r964 tqq f5re 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 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 constant rf)79 p) +xkdc c6jhqa$k$, which appears in Coulomb's law?

  Two charged objects are separated by a diiku 3b(zbz-jy) ,jo5 xstance d. The first charge is larger in magnitude than th3 ,z(k u-iz jjbb5oxy)e second charge.

  Sphere A carries a net charge and sphere B is neutral. They qqtsa4j5j*1z : rz /rkare placed near eachz4q5j:js q1ktr *raz / other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otheq+k.kk fazy( 6ys7cnens(4a -r with a certain force. If the charges on both objects are doubled with no change iqnn.k-e( a sasyk7(y4c+ 6fzk n separation, the force between them

  Two charges are separated by 9qh7:pbxj 5x2snzm 6ka distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of6 hmz pkj:n59x72sqxb d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happensa3 n0eei2i65t tq hf7v 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 original value? The force is now f7htq5a ni 0eev6t3i 2equal to

  An electron and a proton are separated by a distaqv8.( --u2 k uifpsemknce 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 ele-2 ifvupu -( q.ke8mksctron?

  An electron and a proton are separated by a disgqgyb1h 4mgm au l-u:qxlz-,(/ :r1dqtance of 1.0 m. What happens to the magnitude of the force on the first electron if a secon,-1xq:qgaqyghlbm gd :rz- 14u/l(m ud electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What haptuupg 1; ma+;fpens to the size of the force on the proton t;pm +fu;uga 1if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at th;wh6;eb k zffal4 y)3ge 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 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 h4afeb)g ;f;zw6kl3y the square?

  A point charge of +Q is placed at the centrs) 5fo:u:/kq ajnl3ntbwoa 5ky3 u/f *oid of an equilateral triangle. When a second charge of +Q is placed/naq 3:fuw:t 355 osb /of)jknluky *a 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 third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector?.k6wl ry*x+vmdg jr. (

  At twice the distance from a point chargef2m h- -a-xx0ls+vgkz , the strength of the electric field

  Is it possible to have a zero electric fielx ip + o 4e,c7e04nxo4pbztehmh6, d-ed value between a negative and positive charge alon i-,tbx ,7+ecm xpz46npe4 hde0oh4oeg the line joining the two charges?

  Is it possible to have (sm0 dkg,n gd9e/ ,mena zero electric field value between two positive charges along the lineg k ,em9sed n0(,n/dmg joining the two charges?

  Electric field lines near psitivedi ce(dr75t/q point charges

  The electric field shownr/fqmi6fs) /l-vylmnnn j25/

  Can electric field linely:n y6rj6iotb ) l;h0s intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unwvq e*1j1*etctpw0cgz 4,p 6 viform electric field. Give a statement concerning t 4gtwe j0 tc16pqwv,czp*ve1 *he electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal 6dvaeiq *.y fiyfz2aa.r)e2 )6(rijw diameters are each given the same charge, the electric field (E) midway between i2aey6.yevdfqfr(iaa6 ).r* ij2)wz the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wher y yo.ko1.t4sne a uniform electric field is directed straight upwarntoy1yo.4 ks .d. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium 2 d f d*,y;q3/+ xinhvia-ga3xbwo+)/g ggbe xnear an electric charge

  A positive point charge is enclosed in a hollow metallic spi3f 1tx ,f:ashe1.porgyxia 5 i dy0*;here that is grounded.do.ie a1i0 f1;yys53 ptx,hi*f a:rxg As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors il7x p nm,ppx. -+murgohy+p/4 n static equilibrium.

State Gauss's law.

  The charge carried by onpyj)gk4p yx/yt13 vc7 4 foe(re 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 +2.00 mC. How many more protons thanfnj o+ itx 1j/2k:y9ev electrons does thij o/ :9ev+yt1kixfjn 2s piece of plastic have?

  What is the charge on 1 b m5oxmtzi3w *(725bof;vphhc5b jk.kg of protons?

  An atomic nucleus has a /di tkn(df v94charge 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 aogce,n/ 0 29i 7yiiezend -4.0 mC, respectively. Wh 7 ,ze/o0 9nygiiciee2at is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them-swd6dp v-m -a ziw76, ;ozrvx is 1.0 N. Whow-az66, m ;-wixsvpzd d7r-vat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. yg+vt/4 hmxz7a 8tg8j How far apart are they?

  The force between a (sp u9/kx zt- o2nip:n61,vf*gtqtb u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, mf 1dsb (,sl1e;q;6yd0 d5zqtmcv i3rexperience a 1.0-N force. If they are ;by5e z s;i qfs3l ,dq0c1mrv1m(dt d6moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point cz ):l tlecrn.u r5k7.ypmj;t2harges 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 thirrp ttz):ne7 52l.;jc.rmyl u kd 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 pl6kbow*sy ;2ty aced on the x-axis. A charge of +2.0 mC is placed at towbt *s6; yy2khe 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 followi uoh :5ppzq3-m2jbdkk*7h ; ofng 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 the 3.00-mC chau-mko3:qf2 ;jh 7ob*pp5 dkhzrge?

  A point charge of +Q is placed at the centtkpvsb ew.r v.9:a0:i er 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 fkvw90.:ba seir:t. pv orce 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.zca)lb.z hl.gvb l.d9*n kg**) vl 3ib0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at .d gal zv*ic .)vkn*bll )3z.*bbhlg9(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 rx q:3ir/ wj-vf9af(s= 5.0 nC is at (0, 0). What is the direction of thew isrxf: 3r q/f-(a9jv net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vwv),r i8y iirhn84 p42jwl7vv ;w l1wuertices of an equilateral triangle which measures 30 cm on a side. What isl;r7wvw8wiiv2j8,lnh 4yp r )w 1u iv4 the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charge(l- oqry6*dd *2k. qkot iv+ers of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between th* irklv oq.-dkedqr26(t*o + ye two charges, would it be possible to place a 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 is at zn b 8jr*m88/lkid:qvx = 4.0 m. Where on t diqvkj rz:88*m8l/nb he x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the or/2h ny w5 qelc29:sw-pdongk5igin and charge -q is placed at x = 2a. Where can a third positive charge +q be p/p2s ncdhl5wqke9 2yn:o- g5 wlaced so that the force on it is zero?

  A copper penny has a masryyl/b us5k7 (s of 3.0 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 th9;r lv6ajqus-e9u- 4yb ej7ucpr-5 2kwa e(ane force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is9eu9 6rb csa4e (ru-ap--vk5alyujq7w2ne; j the proton?

  Two 0.20-g metal spheres are hung k1m53s)jpdid w.ts e*)j4nj v from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the e1 i m)js3ej.s4t v wkj*nd5d)plectrostatic 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. What is the magnitude of thecw2 :yvd ; ygcl5)/arg electric field at a distance of 1.0 m from the nucleuyya /c5d: gg lwv)2;crs?

  What are the magnitude and direction of the electri ghr+6s m31xiwfni0( ege h(i4c field at a distance of 1.50 m fgr+h4ee w1ixi(sfmg (n i6h30rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnita-)vf0j0 km7anm*ageude of the electric field at the loca7m0 0mn)*vf-ejk aaa gtion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direc2l1vw62yz2wb:;h i xn zcom n-jdz4q 7tion of the electric fieldqzv h6 2wd m7-4;2bz1oxwi :zlnjyn2c?

  A 5.0-C charge is 10 m from a small test charge. ;uz3jcy;fe-gsn ag) pk- 8,rs What is the magnitude of the force experienced by a 1.0 nC charge plac gae rn kp;8ysfjg3;u-)-c z,sed at the location of the test charge?

  Two point charges each have a vabnt/v+ ) z,gov wgmri4w,8* vblue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between thg ozb)vvnwv4bt 8i,*,rw/m +ge two charges?

  A 5.0-mC charge is place0ytlu29gfnc1 rq 1k9 kd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Wh2kq cfn9l kgyur1t091at is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed a i p+,lcedaw t19of4)mt the 0 cm 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 mf,419o) dw+ ictplae is the electric field zero?

  Two point charges of +3.0 mC andsekn2anrb0y6 n7 /bl : -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude o nal:ye6nsr/ kn 0bb72f the electric field at the point midway between them?

  Three 3.0 mC charges are at the t gi7n6 x),2c* 2y fgic:nm4clospy7yhhree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge.f6n) 4ycln27yigc y ,g:hoixsm *p7c2 Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charaak9jt2i hk7 dq:3r5kges are placed at the corners ojkk97 3ta2 :rhkqai5df 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 magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge7 x.+krtl3cjb9l*l/ipjwn* k of 5.0 mC when it is placed in a uniform electric fie+*l. kxkbc7 j9lj*wt3/r nlpild. What is the magnitude of this electric field?

  A particle with a charge oigj):,c6ppm df 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 6007.+j c:ymz/y xgprkv i:jj 9 sv((qpn50 N/C pointing downward. What charge must be placed on the ball for itvr(.pnj(v jgz9 si+ 5cqxykpm :/jy7: to be suspended?

  A foam ball of mass 0.150 g carries a chak.p 1,w3gyl r 7ffih1jrge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction 3fifr.kgl ywhpj1,1 7of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnituf rn6 ; /8.zi(unko1o/yjpxk:8truzbde of t:8o fnuyo8uxrk1 bk/(in.6 z r z;jpt/he electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cmmu *r9qy1 4mdy carries a charge of 3.0 mC. What is the electric field 61 uy*4dmqrym 9.0 cm from the center of the sphere?