State the law of conservation of electric choq9u6q b9ti, mgbp2*q*( i pkgarge.

  Is it possible for two negative charges t+8k)h3km mje po attract each other?

  Is it possible for a positive and2 p0 surcaj60j a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the4vihvp )j:h 7p n)sw8c bn8;- r0ue+xri tar,i process the glass rod acqutsr8p8 -x)wi+v cu)j ;nvp n b:70i,ea4hhri rires a positive charge and the silk

  A proton carries a

  The model of the atom showso206f hjw /f mzudre9:1kwafu xrw9)* a

  A neutral atom alwayw1 rz.u7 oa*yts has

  An atom has more electronda3bn0qxz*u w/ o rn- 4psn(p;s than protons. The atom is

  Materials in which the electro-ziq e(ycz, n-dmq8t1ns are bound very tightly to the nuclei are referred to zd-8 mceq i qtny,z(1-as

  Materials in which the electronv 8 2dqpc0la7qft1b.ds are bound very loosely to the nuclei and can move about freely within the material arelqd 80a.bdtv1q7 c2 fp referred to as

  A negatively charged rod is broughti7 y z 8z4ty8(umc2axc(rj)uy near one end of an uncharged metal bar. The endy8 (2m)yxa ci4zuy(ct8 u7 zrj of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive - 5. nds8lmgczp1 2qhecharge, and sphere B is neutral. They are placed near each other on an.ec-d2nqhl z5 pgsm81 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 electrbltgt6r uid1uk8q-9287oin y oscope positively?

  An originally neutral electroscope is briefly touched with a posyu57aq:kxj:wel3iq.2:. wzc3s x jfditively charged glas:sqj 2:q3y .7f3 wxa:ilxek duwjcz5 .s rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positmg+ bybojoeq6, p3v22ively charged glass rod is held near it. After the glass rod is removed, the electroscopp3e, 2o6qgomvjbyb2 +e

  A positive object touches a neutral electroscope, and the le j2t3-7jlti 2 oe q6:d arbjn35ntp3eeaves separate. Then a negative object is brought near the electroscop jdnq3 e5taeb3p-t2237ro jjtli :6ene, but does not touch it. What happens to the leaves?

  A large negatively charged object ; :ofc;j: rfad,a5bny is placed on an insulated table. A neutral metal j af ;bd;rn5fa:cyo,:lic 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant ) sx4etp9h nh tkxi.m)b27; ng$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thmte1-xs;9;9 fccami7 tbbgp 8iuz2(a e first charge is larger in magnitude than the 2aemf;(s - ut9pxzicg;m9t 1cb8 b7aisecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eaci7cud:qs2s hz*9 e q4wh+6g ohh other on an insulated table. Which statement best describes the electrostazhqs+ u q9d eh*27h46gwi:cso tic force between them?

  Two charged objects attract each other pyo-0pcz)u xxb wf;f g+wl.06 with a certain force. If the charges on both objects are doubled with no change in separa cz )0g6p u.fxlw xpb0+fo-w;ytion, the force between them

  Two charges are separated by a distance d and exert mututc(v iwe.6 .vl7l6a v2dgl9k gal attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the nei l6l.e 92k. 7lvvtvd g6wca(gw mutual forces?

  Two charged objects attract each other with a force F. What 1iiblgjx,: d mm2d4z0gc 8/nmhappens 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 valueigxdlb,m4 2d0 c1zmnm/8g j :i? The force is now equal to

  An electron and a proton are separated by a distance of 1 fzpxmgh2c49 e b7wu21.0 m. What happens to the magnitude of the force on the proton g1f2c pz b4 2hum79wexif a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.9js+h9 9ng osk3 b t;a:kh6ckm0 m. What happens to the magnitude of the force on the first elea g+sto6sjmhcn3:9;k 9k 9 bhkctron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. i2uxl89 hip;l4p3 8g-plbvd x What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton ;42 ldilp8ux8lbh9 xpvp -ig3?

  A point charge of +Q is placed atz 6q 2g0egnnjs 5 8yxn1uq)4jj 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 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 n qug jn25e1 znsx)nq8gy64j j0et electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is pj.c-c;/ ;9g qta-p fzv eb-jbvhr a7r3laced at the centroid of an equilateral triangle. 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 cac.-;rjbvrbpzq- gfa/e hc t-;v 97 j3enter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vecewhnr0z;sg k+)ra* v6 tor?

  At twice the distance from a point charge, the strength ofb oaom2ua/b4y( fmg8/+x lfs3 the electric field

  Is it possible to have a zero electric field value between a nega vnya4ug i:wd6f,lz *)tive and positive charge along the lineuny ,zldg:*i46vaf )w joining the two charges?

  Is it possible to have a zero electric field hoo4f*4n/wxg yr e+ryhw 4 l (v4-iv:cvalue between two positive charges along the line xw4(oif :+ gvryco w/l44hvny4 *e- hrjoining the two charges?

  Electric field lines near psitive point chajn1 uz16(+ hay)kr rderges

  The electric field sho*d:u6 d6pjz gk(k8ixgwn

  Can electric field lines intersect in free spacpi+qj f t5.f5ie?

  A solid block of metal in elect pa1; ryox)orrfea842ll);d6n in: ao rostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiorl8xldofr pai;6 )oeyano2)a4r n:r 1; .

  If a solid metal sphere and a hollow metal sphere of equal diameters are ea-bk+ 73tafu b *7 1otz.ebieqlch given the samfkb7 az3bqu.*t li-t1obe7e +e charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum res9 z5vs0rvg wmu;c fc0+ 08ydb k;v sajjm()tk(ts on a wooden table in a region where a uniform electric field is directed straight upward. Wh5fd)0u sk; jccj rvt08 ; vvmzg+yks09a((mwbat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chary782g9 ,i9enqmlbyt pge

  A positive point charge is enclosed in a holhmk t o4yhf,*4low metallic sphere that is grounded. As compared to the case without the hollow sphere, the elec,omk fhh4 ty*4tric field at a point directly above the hollow sphere has

State three propertiesze5yf+;a 7lze of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one ele t .+uo zu6 oe1.h; 4-t8i/niq4e,keqhwinty qctron 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 than eled: 9r2pl jbls9 fku(1bi+t-cvctrons d:d-fbtkl bj( s9c2l9up v1ir +oes this piece of plastic have?

  What is the charge on 1 kg of proto,u;zs o7 hwgz we6dw,6ns?

  An atomic nucleus has a chargencf2hp:o j 9n irb5yu6iw+l/*5)udma 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 a p)(prs xt5t(wnd -4.0 mC, respectively. pxwtr5(s () tpWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the uubg6bt w/ y68d-9y7e5gahf j force between them is 1.0 N. What is the magnitude of the seugut-bgy8 9 7yjwf 6ehb/ 5ad6cond charge?

  Two 1.0-C charges have a force between them of 1.0 e*nqk::d9 h js/,qdbqN. How far apart are they?

  The force between a aq4j(; tt xci;-gpf)l$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If they arj9-7ph nfl7ec e -fe77hplj cn9 moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point ch*biibngp e7 bte *u-(c4 2(tedarges 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 thiruet( d nbgee( b-7it4*icb *p2d 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 p6gn0.ukg.b ha p) /x ygo*ev uyqzq6/6laced 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 magnitude and direction of the electrostatic force yghu//q0 pg keyx 6 nq*.u.)vg b6oz6awhich acts on the charge at the origin?

  Three point charges are located at the following positions:qcc0apb/ ;7gk-gve1u;m x (sl 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(xcqpg107a;u -l k/;ebvsc m g the 3.00-mC charge?

  A point charge of +Q ij:bxux( (0ep)b47 s bbzj wh0vs 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 if a third charge of -Q is plh0bbxxz07v)sbbu e j:w(j4p (aced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is obbn 90tjo6l* ee7kzk.h 6-lp,4sj rsat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of oo zpj9,.sk 6hkb7*lee0r6nl-4tjbsthe 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 = 5.0t :0xngxq87/ydh8xz6f si9py nC is at (0, 0). What is the direction of the net force on the 5.0 8 :shdf6/ 0x8xptxg yzqiy97nnC charge?

  Three identical charges of 3.0 mCmy4)th3fp vd 7npojg3 mu; ,z, are placed 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 any one of v3y 7,mdh 4gn)3u f,p;mopzt jthe charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what2236h1qd fhfjjl,ao lj hn lcp74ac1 4 point, on a line between the two charges, would d6 o ,njfclahh p11clj ah4432l7 2qfjit 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 origin2f2p.sqc 0xse y;m7mogly, 2r and a +9.0-C charge is at x = 4.0 m. Where on the x-axis 2 ry,mgqycpsso.0f2elx;2m7 can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin andab( cf.)v;trgz ekn+ 3d:c +na charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zezf k r(d+cv;3eg)ntnac. :+abro?

  A copper penny has a mass of 3.0 g. A totunrl ttban2d1 k9)j)bm 9n16 zal 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 )qqwzm8( us(ka f 2j+lagainst the force of gravity by the attraction of a fixed proton some distance above it. Howmk 2)+qw(u (j8zslqfa far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point zy 1f5 bl3k0kdede1cfi:4* bkby nonconducting threads which1 ekf*4zci1:bble5y kdf3 kd0 are 30 cm long. 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 has a charge of +40e. What is the magnitude of 5,j v++fsp(fp,h m st*d5xpmbthe electric field at a d j5tfp *xb , phms5pmfv+s,+d(istance of 1.0 m from the nucleus?

  What are the magnitu vi4-h.x 8okysf)ar :fde and direction of the electric field at a distance of 1.50 m from a 50.0-nC charge)4:yrkvfo.h-f xas 8i ?

  A 5.0-C charge is 10 m from a small tes f121yvdo2zta t charge. What is the magnitude of the electrod2fat 1z1y 2vic field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charoqnqrjylp 9:3x0tg h 4w6 +0krge. What is the direction of the eleh9p4n6x0+yqo:rkr3 0tg j qwlctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of ucxy f xq mr2+uqb(+r*02e2vgthe force experienced by a 1.r2qmf +vx2yqu 0*u(e +c2xgrb0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separat7n/ld:tg x7a p(o2 wexrl,7fd ed by a distance of 4.0 m. What is the electric field at a point midway between thtgrefdn7(wpod 7:x x/ al7l ,2e two charges?

  A 5.0-mC charge is placed at the 0 cr 9y) acpymve7b*p; 3qm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What isbevcq7*p) ay93r m y;p the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ma3q;e8rcs( wg xmll j43rk 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 lgc rw38ej3 ; 4qml(sxcharges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC aruepmiu 0atmvj.34r)0n )i1 dwe placed at x = 0 and x = 0.20 m. What is thud eu n3p m4ijvt)m a)r.i10w0e magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges 8.j1vakzbisvxg.x 6 sy(j4 q 4zn4 aq6are at the three corners of a square of side 0.50 m. The last corner is occupied by a(zi s 1axgv6jksnz.v4 6bxq a8.4y4jq -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 wq sotve t.07qxg,(v1the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1gx(s t0,tv.7w vq1qeo); +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 i 0:al/9so biyet is placed in a uniform electric field. What is taoy:9 s0 ib/lehe magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ofy m6(1ftqf90t8 v-wif3 2vynoblo70 d*kxucg $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is plag o aq:39jvqz9h.okv 2ced in an electric field of 6000 N/C pointing downward. What charge must be pla9q2aoqgk.9:vjho3 z vced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball i/ikgxq*m 6b kplo, h-;s placed inside a uniform electric field, and is suspe/-l qkpog i* xmh6;kb,nded 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; 9ny0 gr9kdh7on)i*(pylgdiv 6f6lw +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's suk pnrg6 (0vd9i69 o ynl)gfyi*;d wl7hrface?

  A metal sphere of radius 2.0 cm carriaf4 w eagzp3kcg90/nk(gs: 2h es a charge of 3.0 mC. What is the electric field 6.0 cm from0ke49gz 2 n(fhas/pgcw kg3 a: the center of the sphere?