State the law of conservation of electric chan ,tw5,,siavnn8l ad+t2a mdpl ae) ci6y+; 7xrge.

  Is it possible for two negative charges to attract ea-3ry t.twgqj3fwjk5d 90 x-hfch other?

  Is it possible for a positive and a n1p6j v*1gb z7nnjm*7zqi 65rvd q:r hnegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glx*x3foxzc/w;q (1 7q8og,t8o abuxz5 6lp gx xass rod acquires a positive cha7gox;zx1o*f xlwx6/8o8a, g3 c5(tq xqu bp zxrge and the silk

  A proton carries a

  The model of the atom shaln+di/y bxqi,2sr;sgi)) 5zows a

  A neutral atom always 0onc-ck- 3dpb c7s:qgre5 t6x has

  An atom has more electrons than*9z *l u3q: 4nklwccws protons. The atom is

  Materials in which th m)r)*itb: m0oasmrh*e electrons are bound very tightly to the nuclei are referreh)bari0*s r*)to m: mmd to as

  Materials in which the electrons are bound very looz6 c n-dtw1 (me1oy5bksely to the nuclei and can move aboutct5(1 kenwm6o d-z1by freely within the material are referred to as

  A negatively charged rod is brought near o 91jx z1jk8coyne end of an uncharged metal bar. The end of the8c 9jxyo z1j1k metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar be(3;zjt+ rvte placed near each other on an ins(+ v;rz3tt bjeulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge 4*jt:zgsgz:b5 +urtm an electroscope positively?

  An originally neutral electroscope is briefllq;o: : j,3wf ezds,bg.7m pgiy touched with a positively charged b7g oz3lisf,,wp:q:g .jme; dglass rod. The electroscope

  An originally neutral electroscope i a*i zj/nw2s4q vw:u o0lu,k;cs grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electro*l; wz nioaqsk:204u/wv,cjuscope

  A positive object touches a neutral electroscogdxfwlynq54; 8 /uhhp)i8( t lpe, and the leaves separate. Then a negative object is brought near the electroscope, but d4 hytf/l( ilnhgpx;dq5) wu88 oes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an inuyij, : 9wpfm:sulated table. A neutral metallic ball rolls straight toward the object, but stops before it toyw:jmi9,uf p: uches 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 thntr t7y5. 3otb a */auxw4aj8ne Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firgqo,l6;md(5+ h3 myd j +t4uuii+jchkst charge is larger in magnitude than the 4qy+35mtc;odj(ul6uh mgh, jd+i+ kisecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed usx8 tba.9zru7y:u3u near each other on an insulated table. Which statement best describes the electrostatic3uu9:ruub ax.7 8zyst force between them?

  Two charged objects attract each othem, oj7 rx72*b3bjqayar with a certain force. If the charges on both objects are doubled with no change in separation, the force be72,*a3 jrxo7a bymbjq tween them

  Two charges are separated by a dis ir2c9+ mqk,nntance d and exert mutual attractive forces of F on q ki9n +n2,cmreach other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with.tfg l-j e1j)kklfhvl(2a60 p a force F. What happens to the force between thel16j-j.fgpa )lfe 2l0k kh(tvm 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 equal to

  An electron and a proton are separated by a distance of 1.0 m. What ha9p . d5a5c md0ohppjq)v2yay(ppens to the magnitude of the force on the protoop5ama(h.5 c d)dv0j2q9yp ypn if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What z.0ilmeeaj( 7 happens to the magnitude of the force on the first electron if a second electron is plme(.lij z7e a0aced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens * 3 pee4lv w(d8c(qih ,yx:mknto the size of the force on the proton if the electron is moved 0.50 m closer to the proton?,xp:*h3mk lvn 8q4wyed(e i(c

  A point charge of +Q is plac -ift* i +v8unlcn3:sfed 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 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 +:*-s 8 fn 3tinuilfvcat the center of the square?

  A point charge of +Q is placed at the centroid of an equilatet,6tr,n x;qpkral triangle. When a secondktpx,t6 ,;nqr 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 vec6 jpza*5zwfp* tor?

  At twice the distance from a point chargexf1oc 2*o5ui ;;wpbyxhviy 03e45/r smb d:jw, the strength of the electric field

  Is it possible to have a zero electricoi32b6o wne 38/kki1do sw2 am field value between a negative and positive charge along the lin 2i/6ok wkwdosi3om e1a3 n8b2e joining the two charges?

  Is it possible to have a zero electric field vam:c sog6/.2b rgn:wfulue between two positive charges along the line joining the two c m6 cowsfng.bu:/2r :gharges?

  Electric field lines near psitive point charges2z7 w(h 2zevfo

  The electric field sho /*:tvf.jj kngwn

  Can electric field lines intersect in free space:hc/r r et8 s+g88zp 0scse mumc/z2.s?

  A solid block of metal in electrostatic equilibrium is placed in a uniform el raa8rv::l lm-j cu**qectric field. Give a statement concerning the elecja*l*crmau r8lq:v :-tric field in the block's interior.

  If a solid metal sphd rz+x8u *h a6mx:p1cmere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the centeram xm 86pdx*c+r1h :uz and the surface is

  A cubic block of aluminum rests on a wooden table in a regioe sz *7isn8cvs /7bch0n where a uniform electric field is directed straight upward. What can be said concerning t0cs7c *8sne sizv7h/bhe charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargfa 0w:/qef /due

  A positive point charge is enclosed in a hollow metallic sphere that is grtk5qpbd n,i h: 0nre;1ounded. As compared to t r5eknntb i;01d,ph:q he case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties h( jriq76x3 0hfap cn3of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron 7p;alp 0s/ bxmis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic hap +lgds-h0m+w,h k (jhb 4xzk5s a net charge of +2.00 mC. How many more protons than electronl hzk jg-h(0pxb wdskmh 4+,+5s does this piece of plastic have?

  What is the charge on 1 kg of0(sy80ycnaca) i )j;l( ceou t:l sz.q protons?

  An atomic nucleus has a charge vus94qv(w 3zj of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated 1f0o1n 6k6m nrara lda64; mnhby 1.5 cm, have charge values of 2.0 and -4.0 mC, respeca6d f4l6nk; 1nh 1mraar0om6ntively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 o 0.5ntkwc 5aem from a second charge, and the force between them is 1.0 N. What is the magnitude of the second charke. ano5 05ctwge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theyxnv8wc .d-jl6n 3p gw6?

  The force between a hxwss2vxg27 2klq++t 0ywd0p-ph o0j$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar*vj8p a9ww+zblf/di,i*8 rq v t, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what iwbf89 *i, p* ialwdj/vv +qz8rs the electric force between them?

  Three identical pointe+ c6 zhkg06g.dj yd+q charges 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 third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin6e+ dkgj.cz6qdhg 0y +?

  Three point charges are place9z0i5+f9b3gagc lhpcn7:ldov+ mjk 9 4wf9wwd on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x ++njd99v : 9w wgcwf4a fl 09gb3 o57mchkipzl= 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 following posi8nd2yy0t*:p c.w 6iz+: jdy9qcioay ptions: 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-myw20yadpp qcdi zc8+9 yn*6i.o:j y:t C charge?

  A point charge of +Q is placed at the center of a square, and a second point cha.; ebuf*gn vr ftd-;c8rge 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 placed at the lower-left corner?8 u;t*.dc bn;re-fgvf

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC isiea7m xq*)re,t9al :h q6j8f gr38ntf at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mag 9eghfxl7f8enmai ttq,3q *8 :rjr6a)nitude 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 rm0fh+0 ks6hzjii5c3v qbhwz)l(y:1/wk .d jat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of tjq)+im(hhi dzw slr 050zh3fwck v: y61b ./jkhe net force on the 5.0 nC charge?

  Three identical charges of 3axat 3)o8u4; ebi;zr m.0 mC 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 4 a)x;irm8t3 ob;ezuaone of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 qfdcj-k)+fgedi ,r72xofm4xw r +o5h.ojj5-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 wo xqf) gc2 +fh 7oif4 k-je-ro5rd.mdo,+5xwjjuld be zero?

  A +3.0-C charge is af8bbgk4r4mn1 (35 wunv sqq 7mt the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero?mw3(k4rmnsqg 7 45qvun8f1 bb

  Charge +2q is placed at the origin and charge -q is placed at x = ik.z-w: j9 scg, 2jkhd2a. Where can a third positive charge +q be p k,.wkh:cj-2ijzd sg9 laced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A t6qz 3h; ( xt6vfg.gfhyotal 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 attraction of a fic2mq eg)p j9m+xed 2e)gmj9c mp q+proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheuhegif38 lfpmw38lrx 6h(-: lres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fol(6l8r hp-3:3fu m i lhfe8xwgrces 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 the electric f rz0d1h+ho6zmield at a distance of 1.0 m from the601 r +zozhmdh nucleus?

  What are the magnitude and directions w/1ovm4u-; n g/z xz7oa)kgk of the electric field at a distance of 1.50 m from a 50z/41 7kg)wo;xgusaz k -ovnm /.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o+3hke h2howg,f the electric field ahg+ ke,3h2ohw t the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What qbdd*y 2 j-un5ouq4( dis the direction of the electri -dqonduju b2 *4(d5qyc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th.qb d5sj5g)j7d x:wh8bku vn ,e force experienced by a 1.0 nC charge placed at the location of the test cha8jvn7j 5d )5whudg ,kbqsx.b :rge?

  Two point charges each have a value of 3.0 C and are separated by6-q(+w x 0 xiqjzqpip.y.r9z r a distance of 4.0 m. What is the electric field at a point midway between the two cipxiqyx(.zp+q9q.r j6 rw0z-harges?

  A 5.0-mC charge is placed at the 0 cm marr (ov4+ i/snykf rp,b7k of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What /,rni o7rfb(y+v 4kpsis the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of wkwbd, qoe-a rh,*x+/a meter stick and a -4.0 mC charge is - q,+dkra*, xh ebwwo/placed 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 m wj+-zg,,1p6c3spbtr (srq v3 p)zwkrC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mqzp)kc3 -63r(,js z rr+wt wvp1,s gbpidway between them?

  Three 3.0 mC charges are at the three corners of3mmzmx0l57 z w2m34opk lr8 gk 4,ttwk a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fiel8k3w2po r w4mzxt5 zm4l k m,tl0m7gk3d at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pxu38nz5de0 ltkwip-1 laced at the corners 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- kn1pzxli8dw3t 05ue 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 mbh6;bj)k dw)pb ns1) dC when it is placed in a uniform electric field. What is the magnitude of this d );)ndjswbb1 6)khbp electric field?

  A particle with a charge of 4.0 mC halw8k7 a x*g)9f mayoq*s 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 o 7sdm,eniv) 7uv72meof 6000 N/C pointing downwo v)e 2i7em7u,mvdns7ard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.hcu i56z).5d5st1lc bxf3n kl The ball is placed inside a uniform electric field, and is suspended ag 5cl)6dtb. fks1 xzlc3 5niuh5ainst 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 th4os )i p(dzhb)e magnitude of the electric field 5.0 cm from the sphere's surfacehi)s4pd)z ob( ?

  A metal sphere of radius 2.0 cm carries atau h.6-hs )vyijyr2xkc-/kz vv,p +4 charge of 3.0 mC. What is the electric field 6.0 cm from the center ovuzx 4h.rakijt-ys v+hk-y v/),2 pc6f the sphere?