State the law of conservation of electric charge..im w q8amii0n)x)2wcoq e:0i

  Is it possible for two negative charges to attract eayirg jx4 6yx:+ch other?

  Is it possible for a positive and a negative charge to ad:yck9k 88 7 6esxqhu0kky k*ottract each other?

  A glass rod is rubbed with a p )*ji57 oc6o fg(soow ie-;gqx,w8kvpiece of silk. During the process the glass rod acquires a positive charge and th *jo8gs7kw6; )5p icq-ovg(w i,ooe fxe silk

  A proton carries a

  The model of the atom shows e9u .n g3qen* wgjyd5*hym*i+a

  A neutral atom always haiq.w1alm4n4/ ( *vcxkh0nd2a 0u0 nsb e gp0qis

  An atom has more electrons thanuu49 lb8xx0 li protons. The atom is

  Materials in which the electrons are bound very tightly to the nucleig syhy e;r40s+ are referre;g0r4shy ye+sd to as

  Materials in which the electrons are bounc9 sw pns5c0z1pc0m)cd very loosely to the nuclei and can move about freely within tpcz00 smc 91n 5cwpcs)he material are referred to as

  A negatively charged rod is brought near one end of an unchargew7)syc qb e)-jd metal bar. The end of the metal bar farthest from -sqjb7e)c)w y the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They art ,v*n9dploa: e placed near eachnad 9,optv *l: other on an insulated 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 pos,ist h5wzk:,d+zi x3bitively?

  An originally neutral electroscope is brie2g9ej6kc5das , w4vntgs5o-y fly touched with a positively charged glass r9,2d- v 4n5 gjgkotess 65aywcod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively c nsp- 2pmm:hky73cma4 harged glass rod is held near it. After the glass rod is removed, the electrosconm37-:ym sk2 m4cpp hape

  A positive object touches a neutr 8uar-pa- 5a( fvy ./bcfn ,-mwi2vhlaal electroscope, and the leaves separate. Then a negative object is broa5 2(bvv/fhrwclm -.pi,a u -na-y8faught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated o nk57.les (ohtable. 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 kh( 5eol7sno. 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 C*udujwq0/3. x9ntf iqoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separv4iltg 55wp4ig p3-q )dfn3i : ttygq2ated by a distance d. The first charge is larger in magnitude than the second:g24gp) yp3nwq -ttqvl4it55i ig 3df charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e;5uh ipu +v1rm kdv q9q2xv19kach other on an insulated table. Which stat2u+vv95 rh9x k; ikqqv1dpum1 ement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges ( 0pq3hvkqvy gs dn;0+on both objects are doubled witqvv s( h0qn3gy;p+0d kh no change in separation, the force between them

  Two charges are separated by a distan(61myfolnwy 6 ce 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 newyfm y6 (n61wol mutual forces?

  Two charged objects attract each other with a force F. What hap-cri57et 1r gfexp;( cpens to the force between them ipxf7 i-(er; et5grc c1f 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 equal to

  An electron and a proton are separated by a distance of 1.0 m. Wh6/pkja5pnch 5at happens to the magnitude of the force on the proton if a secc6 5ajkp5ph n/ond electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hapxn 3jc -7v;l,kcpaf/wtkj v 9.pens to theft.kxwv3;, pa c-k /nvj79l jc magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are7c6fv x .2l) (dmxvqhe separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m cl.2dlqvv 7xfe( cx 6m)hoser to the proton?

  A point charge of +Q is plat +6fdwr 2ti0 (kppa.-wqn+uwced 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 elecqww2ppidtnr6atuf- 0k+w. ( +trostatic 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 x2 3i zxy2c0nel1p:do an equilateral triangle. When a seconexd pc2x 3 zly10o2i:nd 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 third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector? r.fs7m)t9vw c

  At twice the distance from a point charge, t7:4p7nplk:j axp(px c3ff4n phe strength of the electric field

  Is it possible to have a zero electric field value between a negative and w12ms rifm +,qwss2- wcn*zb: *e tj:qpositive charge along the line joining the tw2z+jrwms:,s-b2fe st: c*n1 iwm*qwqo charges?

  Is it possible to have a zero electric field value bew)ep 3 ga2usp(c7im1e tween two positive charges along the line joining the two chaeup3ae) wms1(72i pgcrges?

  Electric field lines near psitive poin5 jv3v +t7zk-,vdxpopms45vbt charges

  The electric field shown k 3dy;*ntiu ui;m/8wb

  Can electric field lines int6ujv:ym )oituj -wm/ s-;fg+ rersect in free space?

  A solid block of metal in electrostatic equilibrium is placed s/l 2.h7cck9dev3eks in a uniform electric field. Give a statement concerning the electric field in the block's inteehe2vcd.9 kl/ 3 ckss7rior.

  If a solid metal sphere and a hollow metal sphere of equal diay0m lsr)c eo,zevp zy2 (8jj:(meters are each given the same charge, th z8vr :yejey0)ls,z2mj(o(p ce electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a 99 5:iyu mbwvqwooden table in a region where a uniform electric field is directed straight upward. What can : qi5vbyw99u mbe said concerning the charge on the block's top surface?

  If a conductor is in elec vziahxox6-(*trostatic equilibrium near an electric charge

  A positive point char 0ia/yc0 gx k-ap o,7f*qv.u0xhnvdg:ge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow spher novhdp 07a:g /vyxc .ifu kq,g*0xa-0e, the electric field at a point directly above the hollow sphere has

State three properties of :19eq 3frqjx cconductors in static equilibrium.

State Gauss's law.

  The charge carried by one electrx:qo6h-c-*( go evjm vzsj9q;on 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 rxo1 hq0s7 + 0w54mmhsgx8xs zmany more protons than electrons does this pxg hs+1 7orzqsx5sw0m0h 4m x8iece of plastic have?

  What is the charge on 1 7qme-ig9kh,ehg/wr.d0it ; +gq us8 ikg of protons?

  An atomic nucleus has a chy d/bc5dln0ie4ce3(on 1gc t3arge 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 v ho(i,rcp/ib( alues of 2.0 and -4.0 mC, respectively.(/ cr bih,o(ip What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and gsp yfi ot+sf *gz7/x ,usn7wu24n3e3 the force between them is 1.0 N. What is the mag ey i3f*wu z,gn +su247snx po37/gsftnitude of the second charge?

  Two 1.0-C charges have a force bef1odmys ln 1-so 8l-l/tween them of 1.0 N. How far apart are they?

  The force between a eoo4;at/;jv hyg1vnm+( u i5s$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exoz9u9q j * h)wjgi3gz*b*t d6xperience a 1.0-N force. If they are moved to a new sep *9z *ggi)dzjwqob36j*x thu9aration of 8.0 cm, what is the electric force between them?

  Three identical point charges oli/:up-iuxds q-tt j1o +h/y+ob ; ax4f 2.0 mC are placed on the x-axis. The first charge is at the origin, the sec+ quu4:hl-ya1/id /xsboji tt+-px;o ond 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 i0znu n. tx.+op:vn4qmC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC .nz:4.xtnq0 +inu ovpat 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 position7g dp; hwu/jsx gj,.j( x9q6des: 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 fors x d;xed, g9j6j7gjp(uwh./q ce on the 3.00-mC charge?

  A point charge of +Q is placed at thqf sxmr4 ph6fb -.a*y9e 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 pm 6rf94 fxq syha*b.-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); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC n acgh*lm,wvfmm egom 4 ./0+g,,ym m;is at (0, 0). What is tv /ag0mwnfycm*o g mm,,mmgel. ,;4h+he magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q21d i .egnv//xl(iugr2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dire2( 1 xi/l/ nrd.eugvigction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placen* 6k.o j:ev3s,ohpuhd at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on a3hpo:vn6,e.h kuo* jsny one of the charges?

  Consider point charges of +Q and +4Q, which areqoz(ai5+c m2;ke qzn.nl i ;2k 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 th;i2kq.m; 2 nk+a (qzencl 5zioe electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C cha3g1hdfrjcj5zsxs :i6kppx 7(.)0u yb rge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force x3)pfgp j7i:s k1j csb5 z(rhdx06.uyon it is zero?

  Charge +2q is placed at the origin and charge -q is plaxtzh3ovz; m e l9+fz)1ced at x = 2a. Where can a third positive charge +q be placed so thatx feml)39vzohz+;z1 t the force on it is zero?

  A copper penny has a mass of 3.0 g. A totp;t es5.k:jseginq f v0n gd-6r /1(hoal 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 f4 ny 7m1(uajsporce of gravity by the attraction of a fixed proton some distanc4an(1ypsu 7 jme above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung tdf4xw8epsec1l q+3 4+ arz:ygg,a x 3from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrosta fgy axl 3wted4s 8:4r+xzap,g+ecq13tic 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 k8ugo5xdjf 5ve,)d(2v9- a/ xywumfwmagnitude of the electric fix2vjuko( xv-gf yu)ed8,afwm9 5 5w/d eld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric-ci bb;gj-il9o5: rkgacl )u*sbxxjr: cp+84 field at a distance of 1.50 m from a 50.0-nC charg -)kpbacg-4lli*u::5ic 8+r;cxsjbgj9x broe?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th+ 2sesy9df4bxn0v0 qg1qx (q le electric fieed0g +(qq0xyx f4ql b9 snv21sld at the location of the test charge?

  A 5.0-C charge is 10 m from a smk;zl3 4rec6 )25/ua:qqcob(xy rjcv q all test charge. What is the direction of the elej oq(3/c 5qcvuc az x2k:lryr bqe4)6;ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude c0 kj-3j75lm,il fod yof the force experienced by a 1.0 nC charfoi7,3dj m0yk l5lj c-ge placed at the location of the test charge?

  Two point charges each hav2ign7z tdl *j wiy/ ;32b qm;chev85pne a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a 5;hq 2nlpjydmi*2eib8zn wc vg ;73/tpoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark o;- 6pu ;y myjc)m9-v/elrt x(bgrb9uaf a meter stick and a -4.0 mC charge is placed at the 50 cm mark.p m j;ber-u t9ma/)-g;(lbry ux9y6cv 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 stickyehyla ;h(sq7r ;yqj/3 lgy5.+louw5 and a -4.0 mC charge is placyo/u7gq;.(; llyy 5w53yqhshare+ ljed at the 50 cm mark. At what point on 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 = dv4j3wkf- n2g0 and x = 0.20 m. What ig 2w vnk3dj4-fs the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners ojx1x 79d(fjuho;c-d ;b vfbm+z 9oaa/f a square of side 0.50 m. The last corner is occupied by a -(;ja9xdh x v bfuc7 -z/dom;9baj1fo+3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corn7rn c*pd0ooauc ,1cb: ers 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 at (0, 1). What c7c proua0bn od:*,c1 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 r*b7 6/ c)ole lfhpld;electric fil/h ;b l l*)ecf7r6opdeld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of gmvkr .6*/6foagee g8 $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of 20;x2tw):1qdf keadbe tnkux e5 t5( vmass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge mus dek1dxtqt k5 nxw :(520e;b2avuetf)t be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of z-by;2 0d5itse ;bjc* b2uyt0+ghwc y -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnisz-; te0* yb0t; bu2djwyy2bgcc+5hi tude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chs+q)gw6i)1wys d:h 7 ve/qqfjarge of +2.0 mC. What is the magnitude ow7vhqy+jdq1)g6e):is/qs w ff the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e9r7ltu o/grip dg.q0xz -:f/ g61shh jlectric field 6.0 cm from the center ofo7t/rgsz/ 9.f6 h 0p:u xq-gdjrg1hil the sphere?