State the law of conservation of electric z)vvznmii0h(y; b+q -charge.

  Is it possible for two negative charge4: eh:5( pykp6zyvc 24r eacrhs to attract each other?

  Is it possible for a positive and a negative charge to-gtugva8l2; p attract each other?

  A glass rod is rubbed with a piece of silk. During the proc d1.qg n+66bh.dptms dess the glass rod acquireps.1d dgb+d hqt6n.m6s a positive charge and the silk

  A proton carries a

  The model of the atom show 1 xth dn. wi8lo0k)/kvmthi i6oh368ss a

  A neutral atom always ha +lr*va- rl jvp6 c4eln8i-n6e6a3rzxs

  An atom has more elec/ 3 pv2qvbsi oda;u.0strons than protons. The atom is

  Materials in which the electrons are bound very tightly to thshax 3mg(+ qg5v2y7 hr8rvoj6e nuclei are referred to a qv5+3g7 mr2aj(r6h 8xhygsov s

  Materials in which the electrons are bound very loosely to the nucloc, 4nrwm;p c3ei and can move about freely within the material are repow 3nc;c,m4rferred to as

  A negatively charged rod is brought na1h6wu+qm-z a:,-g jrv azkz 1ear one end of an uncharged metal bar. The ekhmwa :z-zu -aj1q+ ar1gv 6,znd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrarnyppkj ( of/j:/ h+:fo*tnk.l. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemep hf:ojn/pktkfo* +yn/:r .(jnt is correct?

  How can a negatively charged rodm/qrjen 4hmu (7m5d+7u wr*n j charge an electroscope positively?

  An originally neutral electroscope is briefly touched wipi *0 xj)gz/rtth a positively charged gpzxj/) * trgi0lass rod. The electroscope

  An originally neutral electroscope is grojw:l /+m8 bxptunded briefly while a positively charged glass rod is held near i w+ j:/bxmptl8t. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leave-ggrj v-ddct6+ j6mo )s separate. Then a negative object is brought near the electroscope, bo jtgdc6-6-v g +r)mdjut does not touch it. What happens to the leaves?

  A large negatively charged obje ajpgd g,2rky*th-ki 5dmkxs8*7 pv; 5ct is placed on an 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 object. What is the final cha-;v s5h87*y5k,xpatgidg2kjpmrd*k rge on each ball?

  Charge is

  What are the units of theb2. he t+8q-xjo3 kthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance hibvwk 3g+l9: d. The first charge is larger in magnitude than the secondk wigb+hl: 3v9 charge.

  Sphere A carries a net charge anm r)u i 4o.vyz.xxc:w8/j4wqkd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describesywz:kq4 wi).x /4vo8rcu .jmx the electrostatic force between them?

  Two charged objects attract each other with a certain fotmi5/: utoq l7 vg7gw7rz 8vrv(ty- /yrce. If the charges on both objects are doubled with no change in separation, the force bmt(q/78v 5tvw7:y rgot-/giy v zur 7letween them

  Two charges are separated by a distance d and exbezfiir(ms kh527s 1:ert mutual attractive forces of F on each ot7re2 (mk bzhi5s :fs1iher. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thjvfswde nbz91 h4c ,nq*vf;;,e force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced c9nqbsw v* ;, v4dnfh,;fe z1jto one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.029 e dp3geo .c/y/k:cgyakcm9i jiq)5 m. What happens to the magnitude of the force on the proton if a second electron is placed ne.ygy9 :2gcek)m/ pd3 iic5kocej9/ aqxt to the first electron?

  An electron and a proton are separated by a dist-z t;w3gstenu d q.zlkq5k/e(arh3jp x)g +5,ance of 1.0 m. What happens to the magnitude of the force on the first electron if a second el5eqr knxd3wpz g j /ka;qh .t5g+-,t(ul ze3)sectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. gmrg4u gn0gs2x5h-t6 w/nq;x ;zb( 6tskk(g vWhat happens to the size of the force on the proton k0 bn;v56 xsx wg - rg(/6ghmngt2tzs(q;uk4g if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center 34w;8jsk onl lof 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 j3onls 4l8 wk;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 an equilateral triangle.: xi wrp2ik54a 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 center charge due to a third charge of +Q placed at one of the other axik 4rwi25:pvertices?

  Which of the following is notw lzovawd3( ;, a vector?

  At twice the distance from a point charge, the strength of the electric fielh0zbbv76gr ox2sgm (6iek8r : d

  Is it possible to have a zero electric field value between a negative and 783s7+yvy jgowxfzz*positive charge along the l8+3vyzzgw yf7j*x o s7ine joining the two charges?

  Is it possible to have a zero electri mvdl.rye*gc,)n e 7l1 k4 8f3rfy/fbqv-k)yfc field value between two positive charges ac3flrk1g-blrk)nef m )vd7, f4 ye* v/.qy fy8long the line joining the two charges?

  Electric field lines ,j/ijm(k2atccnlm-e+8lv 5 o near psitive point charges

  The electric field sm faer)jj 89go+;4oumhown

  Can electric field lines inte3 -ydzeu qlz:uc / n;*ekgwej-:1 1etursect in free space?

  A solid block of metal in electrostatic dv 4welha(n12equilibrium is placed in a uniform electric field. Give a statement concerning the electw4vh2nead 1(l ric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are 9q h3wk,h4tjkn10py)zq6o aw each given the same charge, the elnh9h0wa tpk 6j)1qko34q , zwyectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table;voo 4pb yj:negbl5/n: v3yi, in a region where a uniform electric field is directed straight upward. What can be sai4o:;5np/eli vnb gj,v3 y:ybod concerning the charge on the block's top surface?

  If a conductor is in elecq9r -t,shtp 6+ d gyd7ici+.gltrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metall ilff07k:ec z 6g-oey1ic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sfe61yiz-o f l gc:k7e0phere has

State three properties of conductors in statea19wuk 5rpon +8b u0,b4fil mtzgk/aqvb)) .ic equilibrium.

State Gauss's law.

  The charge carried by one electrliyzz1nlx 3 hta9,tv5nd8qk 8;:ppe4on 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 manygf:h4x5 xal3 4r4bp ju more protons than electrons does f jgu3a r4b4x4l:5ph xthis piece of plastic have?

  What is the charge on 1 kg of protons?egq ,-:b;fs qej s(bl.

  An atomic nucleus has a o3f c2pp )c4,kzxa4decharge 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 -4.0 mC, -0cb6;k6gue+ zslieh ak52(8 pltk va respectively. What is the magnitude of the ele8i b6 0zp;lgaet26k sva+ uckh-l5k(ectric force between them?

  A 1.0-C charge is 15 m from a second c 21,yd++t uqyxpxt oy)harge, and the force between them is 1.0 N. Wdtyu2+)p 1tqxyo,+ x yhat is the magnitude of the second charge?

  Two 1.0-C charges have a force betwewe yca (*yav1ab,2:jaen them of 1.0 N. How far apart are they?

  The force between a w uw9 mv zup;tj c;p3g7- :.7hhggxf,w$30 \; mC$ 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. pcbr ;d 0bd-:r0or07v yo 2usb)- otxjIf they are moved to artbpsj yrdv0 boo;b)duo7 0-- c20 xr: new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on tr em7fz8d-2h5/p agn(wok +f2wipv u/he 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 2apk-hef v5m(/ru2w8o f gpdz 7+ wni/direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed hic(qxp-( d4 pon 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 (pxd ih( -4qcpwhich acts on the charge at the origin?

  Three point charges are located at the8g- nfig 5 j2ufoy5 bzi6)ei(r following 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 onb(56 e8) igjyu5-g nfi2 ozfir the 3.00-mC charge?

  A point charge of +Q is placed p cicpqo( :3r25do.xlat 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 centiq .pp2l(o5 o3r c:dcxer charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.3:y (rv;)wb s)vv1,wa g 64e-te vooztt0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). 1,t6:ozbtwo;vs wy a (etg)v)rv 4-evWhat 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, 4z/zi wofyprdr(ywa; )5*dw10.10 m); Q3 = 5.0 nC is at (0, 0). What is the dy5w/yrw4pfdd* ) 1r ;zwia(o zirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateri i rm*1af k;qz(9*ikgxi64ugal triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any(ik 1*g6riz;4ki*amx 9iug f q one of the charges?

  Consider point charges of +Q and +4Q, which p tsy2n+g71k qj,q xz3nt7n2k are separated by 3.0 m. At what point,x ,jt+t7 qkkp2z 7sy123nn gqn 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 would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.ty+oe-e dgrb)t u :;b50 m. Where on the x-axis can a -er5gue:+ d yob;bt)t third charge be placed so the net force on it is zero?

  Charge +2q is placed at the or-i)av;ir :yh i;fywxvqc9/ c+igin and charge -q is placed at x = 2a. Where can a third positive charge f 9r;v/i):cc i vqw-+hxyay; i+q be placed so that the force on it is zero?

  A copper penny has aikxe-up6v;d r+*ghk0 f2s76t4pvar l mass 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 g07m gq ttoulmi5yn 99( .+wqmagainst the force of gravity by the attraction of a fixed proton some distance above it. Howg 9u7+g m0 n(tti.5qommy9q lw far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poi l) 6zdry8t53wb bjg)znt by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion )r b 3b)6ztyjdgzl58wforces 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 electritfg7 )14b:b hijuvj y6c field at a distancejug:vb) bj1 ft 67yh4i of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fhq0m19f 5y o0fo .ht)q9ril d.ygs;t field at a distance of 1.50 m from a 50.0-nC cha);0qgfty0hq.1h59lrof.m syi t9 od f rge?

  A 5.0-C charge is 10 m from a c nvot3cq cwv-m; f+trpaq;51,ohj58small test charge. What is the magnitude of the electric field at the + hp ;c- on;m 38rc,ajoqv 1c5wtf5qvtlocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e::mors .in(c7mle ng*o; +exvlectricv*.;imnn+7: oege(ol c r:smx field?

  A 5.0-C charge is 10 m from a sm ,jwje 99cjh8mall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test9c mj8,9ejw hj charge?

  Two point charges each have a value of 3.0 C and are separ- uns-4ysp 3faated by a distance of 4.0 m. What is the electric field at a point midway betw 3say -f4-nspueen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stm ytaptult;*8-iqb40g xq 8:hh upq o:qet0;0ick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field a q u4qh0 q x-0gutp loq:y:t;;*80a8etpibm tht the 30 cm mark?

  A 5.0-mC charge is placed attxui e,zxil m5a4 ,7b. 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 joim, ix45ze xt,bu7li. aning the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed h;v eyjwo2/d4 br g0s3at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway be3 yb/sdwe0g2hrv;o4 jtween them?

  Three 3.0 mC charges are at the three corners of a squagyln5ai:l v57/h9y 9qlw ug /kre of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the n h9ql5 9 v7lg/a:iylg5k/ywuelectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plac(5o v:(z ekis 7rrq9in/2ephted at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1) ihov:tqr5rik 92p(z s/ne(e7; +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 wh0hm pi4w7oo+wg 3 p,vqu/v9yben it is placed in a uniform electric field. What is the magnitude of this electric fielg0vq4wp p,ob7imyuv+ w 3/ o9hd?

  A particle with a charge of 4.uqpekyc9. 54wa)n 2c1taf8tr 2ezu jxiqx83; 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 600j3b:tsm f p 7xdjl;7y:0 N/C pointing downward. What charge must be placed on tj7m: ;7:ly3 xpbsfjd the ball for it to be suspended?

  A foam ball of mass 0.150 g carbda2ray95ojy.k) rsmefb 7 6.ries a charge of -2.00 nC. The ball is placed inside a uniform electric ek7r.2y 5j)rydaof m 6.bs 9abfield, and is suspended 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 otn x+ xfdddqz8a2w93 8f +2.0 mC. What is the magnitude9ddqn83zt8dw f xax +2 of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of +bgz*ekf p i,x ,5dcrf; g(e/m4 cg5vv3.0 mC. What is the electric field 6.0 cm from the centee;4dp v eg5zc g,+ rkcxfm/*5ib(vg,fr of the sphere?