State the law of conservation of electrzoir4- vwhoe6/ hp0dr+s;) foic charge.

  Is it possible for two negativr.1 q(xlfxk,k,dx :hn:dd )see charges to attract each other?

  Is it possible for a positive and a negative charge to attract each other?p8f)2 v)lxuiu59f j yu

  A glass rod is rubbed with a piece of silk. o3 fc-5vtywl7 During the process the glass rod acquires a positive charge and t3 c-7otfyl5wvhe silk

  A proton carries a

  The model of the atom 30o-;esx/2b7 kwhiw2 xnvdjh shows a

  A neutral atom always hap(m)-et3i a6n0boqsss

  An atom has more electrons than protons. Thb:vuq p3s2 om,is+1ym 0d aqu6e atom is

  Materials in which the electrons are bound very tightlywv( x)8uq8i 09dwk tga to the nuclei are referrexviu0)a89 w dk(8tqwgd to as

  Materials in which theniifs 96sgl2lf7 7j)r electrons are bound very loosely to the nuclei and can move about freely within the matf rj9 7s)nigsli62l 7ferial are referred to as

  A negatively charged rod is broughh;k c/,7nsz5hgthin5l( 2knet near one end of an uncharged metal bar. The end of the metal bar farthes hc/ts5kn7h(gn,ezki2h ;ln 5 t from the charged rod will be charged

  Sphere A carries a net positia,qk eewv :+i;ve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. e:we v q;ai,+kWhich statement is correct?

  How can a negatively charged rr,c enm51q wf,od charge an electroscope positively?

  An originally neutral electroscope is briefly 3)/9d imbp 1a50jydlw yoy* yvtouched with a positively charged glass rod. The electry i/w p*l yd1ov y5aj3)mb09ydoscope

  An originally neutral electroscos-8 1qnok 5twra p+*lb2fuf/zpe is grounded briefly while a positively charge-t/la rubqof +z1w kn* 8f52psd glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral ei+lxzcx8mw:16 6b*is( yi bdilectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wha *8:6bidszwbii(1 xlmy6x+ic t happens to the leaves?

  A large negatively charged object is placed on a phhfks 42t 6rx4vj8y2n 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 ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative rj2h vksh xyf8 4t24p6object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb const0ce b+9x/;lspby)mm x ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distbg8:h qgg -p1vance d. The first charge is larger in magnitude than the secov-hgpgg 8q1:b nd charge.

  Sphere A carries a net charge and sphere B is neutral. They are p 0-jvd z5jk m q5xk8ovtp/3y6blaced near each other on an insulated table. Which statement best describes tvzq jopy06t xb35k /-d8j vk5mhe electrostatic force between them?

  Two charged objects attract each other with a certain force. If thjj g23 q5htrm1jz5j mna12)dn9 yun*xe charges on both objects are doubled with no change jt5 d*j1jm3)am9xygu q1h n5 rn22zjnin separation, the force between them

  Two charges are separated by a distanvqsbl fy )epqf, 1 o5qo nlll9(v:)8s1ce d and exert mutual attractive forces of F on each other. If the charges are separated:n yps,qb() el9v qq81 v5oflslo lf)1 by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wxy5 x ko/p3*tthat happens 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 o5 3yttpx*kx/? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Wh;2ik ha oz.ddlweroinx c5 l)35.0hq2u4 +jwxat happens to the magnitude of the force on the proton if a second electron r.qa+k42n )i ;20d5lo clx eh.o3 u5dwhzixw jis placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens toz/+m/ ;3xyn-95a4yverhxv5jfu zepw the magnitude of the forcevhye-euzx/z r5y/n vw9x3fapj5 4+ ;m on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a wqk 1*zb/s*4 dmhggq 0i(t9 kqdistance of 1.0 m. What happens to the size of the force on the protkd/*h9 t*0 qgkb(1mgiq4w s qzon if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center owdai / x5vs;8df 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 three8 as5x dvi;dw/ 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 at3o-tt +ztm :wr the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an eltmtz- w:rot3 +ectrostatic 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 vectoq49a ,doc ma1xl nc -nk/yqf3:r?

  At twice the distance from a point c4fpoo)w xut:lpr el83 73 t 8 6any92yrxg:elcharge, the strength of the electric field

  Is it possible to have a zero ele 6nbq +c j0;eem u,9vz)taip3dctric field value between a negative and positive charge along the line joining the two chargn6ud9)m0e t;bij qv+cz,ea3 pes?

  Is it possible to have a zero electric field value between two positive charges g 1jba1*s+ q zf nr8du)::tjzxt1rm ,ualong the line joininrj1btx)f d*r: j tz1qu18+ns:um ga ,zg the two charges?

  Electric field lines near psitive point cd gv,t9 -8gt8-ui6f utgys rm9harges

  The electric field shown xw7 dq-i -,(n t;* ipniefm/ta

  Can electric field lines intek5c2vp m w-hjtw,m91qrsect in free space?

  A solid block of metal in electrosti0a+ys9n54rznum3 q, yfwx o5atic equilibrium is placed in a uniform electric field. Give a statement concerning the elect9o3q4 awn zyu+m fs05rn,5 xiyric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each s 9u.wiq0 c o)-vqsre5given 5v) or9sqe.wis -cqu0the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in rd nv)k8b73 owa region where a uniform electric field is directed straight upward. What can be said concerning the charge on the 3d vwk7no b8r)block's top surface?

  If a conductor is in electrost5zmy s0nc7barx i9,dk, :rg9p atic equilibrium near an electric charge

  A positive point charge is enclosed invmcx+gp+o jh g b )..b(8h,wvj a hollow metallic sphere that is grounded. As compared .8hg,b j++gpm w().v jhoxvbc to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducth;1: k ezt3t +uqehzw-ors in static equilibrium.

State Gauss's law.

  The charge carried by n xce/i:(ykn-)x;w flone 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 p.ttlc egn29j86e ic/j rotons than electrons does this pie2gce.8ec6/ti9j jnt lce of plastic have?

  What is the charge on 1 kg of protonsg8 8u:mozlll2?

  An atomic nucleus haskvz2+f1;2g re9ei1y nyo5wz f a charge 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..v9-gnyo)ob cd :s(oc0 mC, respectively. What is the magnco:vy(o)csb g9do .n- itude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.l nu 6s 6ss+q9c zr:qptq2rhh 93q)b7b0 N. What i)7psq26tcq q6u +q hb 9rn3r :ss9zhlbs the magnitude of the second charge?

  Two 1.0-C charges have a force between them of dph 2px0h9yd 71.0 N. How far apart are they?

  The force between a ,y:m.rp;luhbobk :+ e.d-y i z$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia :twdh/z,h9ckp(vy 98 k6oav ully 2.0 cm apart, experience a 1.0-N force. If they are moved to (o89:hk 6pavydvh,/ k 9 uwztca new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed obinkzl ,.*y0xy 9ll4b5caw -dn 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. Whab4-wy c ,a5x*bi .0d yklln9zlt are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are plxk;oocy ej 0 3.ej8c5jxe ;vy:aced on the x-axis. A charge of +2.0 mC is placed 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 magy:cje. ;eko;ojx53 y0 8cevjxnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 u w97hnq sv0 iyq+s4n5mC 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+w79 nqqs54 isu vh0yn the 3.00-mC charge?

  A point charge of +Q is plakl t en2il+885voub +nced 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 thev o8+ k+ue5i2nnllb8t 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 (0.305 gycsz3v504g qd-asq 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 da4-5v sqgc s0yz3q5gforce 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 =fye1pt z))+xi;amj8pyn)bd1ed l 8.w 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC ch ;.ade 1lnpd1)8tybi+jy zw )x) mp8fearge?

  Three identical charges of 3.0 mC are placed at tdys5g.4vc. lr apy t,.he vertices of an equilateral triangle which measures 30 cm on a side. What is sca.yd4,pgr 5 tl ..vythe magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whi mk 7ivuwk x1hnyd/e-)a m;:6mf1jqd3ch 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 force acting on it woul1x 3a1 nk)jqmiyemm k;vd7hw:- /df6 ud be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is vmdh0 fiez/6 -aiziv f l-v/ukkhn51 5(x-m2iat x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is k5eimzi/- v 6(fav-v 5d2nh1l/miixz0k uh f-zero?

  Charge +2q is placed at g651jmvdf m9y the origin and charge -q is placed at x = 2a. Where can a third positive ch1 mfy9dmg5jv6 arge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0j 2+dp 6ss4ju6ca0wze 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 grav)n7 wftlw gmm6)0 af+sity by the attraction of a fixed proton snw)m m0as)lg+f6 t fw7ome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncoswr -)yfmw+ 2qc *oow7nducting threads which are 30 cm long. Both are given identical cqw+f-s* mrywwc7o ) o2harges, 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. What is the ma( nwe3q w8q)ie3u8vo2 rewv 0vgnitude of the electric field at a distan(q2 8)nrwvquoe3ve3iw8 0ewv ce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1c/ gzzc;t(ejo e;u/w; .50 m from a 50.0-nC charg(z gj/o/zcwet;e ;u; ce?

  A 5.0-C charge is 10 m from a small test charge. Wgw +/c0a d1ds4j3avo shat is the magnitude of the electric field at the l a4s g+jsd/0 cadvw3o1ocation of the test charge?

  A 5.0-C charge is 10 m f32m+jo;1lyknoe orrt;2;ktfrom a small test charge. What is the direction of the electr+rt kf;ko o;yj nem2;o123tl ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the ma3 desmndpi 9+;gnitude of the forsmp3;n9d ie +dce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are s /vhk4acf3 nic+ 32, pba7ckeceparated by a distance of 4.0 m. What is the electric field at a point midwa,hfaabk/7icc+3k3ven 4p2cc y between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meto,d:c9f zbp *4/ jdiwfer stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field 9jpicfdw4o*b zf/ ,d:at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0edb5kn( /+pya; wk- g;+wv hkw mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fie whdg; y5(++ ekw kak;/bw-nvpld zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 moer9 e2qjas1 , bstkgp*05v1/1 hlnband x = 0.20 m. What ir5n 19/h1jobg lte em,*10 vabqk2psss the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the threpcxi7vww tq1rmo -j)/k cmee;3-be, 0e 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 center of the sqe w eqpe7o mcr-ikwv; ,0- mbtj31x)c/uare.

  Consider a square which is 1.0 m on a side. Chwc3)j +x)coqt0j0 pwuarges are placed at the corners of the square as fo0 pcwxjc +)j3o0w)uqtllows: +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 charge of 5.0 mC when it is placed in a uniform elect 8) 2fqczycq-uric field. What is the magnitude of this elefq8 -2) czuqcyctric field?

  A particle with a cha cjpjhatq.7if dcg5)l;jkp5/ h+x52s rge 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 pl2j.57csvz0hs mw l.*kh 18l7zuv rrgointing downward. What charge must be placed on the ball for it toc 7z. uvm1s0jrhz2 r 58*kl.wl7hgvsl be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placeia043ov(6h8 0ev7ux ot.s+to m ecln id inside a uniform.ve84e6xoh tlion(3ua7ovs it 0+ c0m 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 c 96baiaqg 0m(dm carries a charge of +2.0 mC. What is the magnitude of the electri db6ma9aq gi0(c 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 iskcg1bjc mw7kqz + *u/r:/n7tu the electric field 6.0 cm fru tb/ cgu7 nk/mz71*j:kr+cwqom the center of the sphere?