State the law of conservation of electric c0jw0zw 9z4-4sldv0 w y,aloi wharge.

  Is it possible for two negative charges to attractgnr;xaf/ e2 v8 each other?

  Is it possible for a positive and a negati1i .w ,lk/)ho6yp ic1z3kc ixzve charge to attract each other?

  A glass rod is rubbed with a piece of sis6 5doq ku5or9rmg69 wlk. During the process the glass rod acquires amr6ukg9 d6wr o9oqs5 5 positive charge and the silk

  A proton carries a

  The model of the atou j4r;l* s*rkhm shows a

  A neutral atom always hasewm a 2aypd 9zq()p,q;

  An atom has more electrons than woas(( pqm7tz4t w (ugz:pf+6 protons. The atom is

  Materials in which the electrons are boundti u;a4iz ta ffpfwvy(k-79 17 very tightly to the nuclei are referred to az(ytv;t-awi i7u4fa1p kf79 fs

  Materials in which the elect/,dy.hv bw. htrons are bound very loosely to the nuclei and can move about freely within the material are referred tht/.. b v,ydwho as

  A negatively charged ro s*.msiwa f j:ed6t2i3d is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the ch wise*ast :2fdjmi6 3.arged rod will be charged

  Sphere A carries a netnc3ab c9 yne9n;i3 2oa positive charge, and sphere B is neutral. They are placed near each other na9 a3i;9nebo3cc2n yon an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char y;np93j )nl22+x nb-sjs olovge an electroscope positively?

  An originally neutral elev8azcu*t qt 5 ajc c5:+ w2g;ydm5nuf*ctroscope is briefly touched with a positively charged glass rod. The electroscoc5a wttd v+2z*:ccuf;5 y5qnj 8gma*u pe

  An originally neutral electroscope is grounded briyc3 8* diwtn9sefly while a positively charged gla9 y*w8 incds3tss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Th)ehi yvri: 9(hen a negative objecti9)hrie:y hv( is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulat(wn8i exv 8kn5-fzik4 ed 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 negativzkxn( 8 nfeiv5wk-4i 8e object. What is the final charge on each ball?

  Charge is

  What are the units of the Coul-+ 8ryjtwuko+(2 l8ce/hx )tnsdej 3homb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Ther/kcyxas3n9h7t( bv )31k psm first charge is larger in max ysc3b3kn/vprs )(tka 1h7 m9gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed p *-y jp4x(snql mp*/4uugfp8near eac(4n4lpgpp-*q 8/jyx*pu fs m uh other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain f;a9ts mpnd77mu;d s blkl0 j52orce. If the charges on both objects are doubled wi;5ltnm pdds ul ;2bm7s0akj79th no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive force/da .azbl (;zss of F on each other. If the charges are separated by a distance o a/al ;zsd.z(bf d/3, what are the new mutual forces?

  Two charged objects attractl1- akd*6 u)n c8cyduji11rw z each other with a force F. What 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-f8d1*1k)juu dz6 ccr 1ya-n liwourth its original value? The force is now equal to

  An electron and a proton are sx -goonsi:8 yo4t4 l1yeparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elec1t8-o4oxil:yoysgn 4tron?

  An electron and a proton are separated by a distance of 1.0 m. What hatmmg 2xq06y:nppens to the magnitude of gmm y26q0 tn:xthe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are3 kjll n8o g)yqvpc3 f8kf924u separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron qolgj 9 2u4n8)38yvpkk l3fcfis moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of :h:bko8yah;kfyu- /ma 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 hu:yh 8o a;-mfk/k:yb the positive charge at the center of the square?

  A point charge of +Q is placed at the cp r1.85fgulktb *r3tajo .5yko* qz7 gentroid 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 *t3 k y. qf*ltkg8r1uoj.pz5go5r7bais 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 vew,vok7wz3 isj):g dq /ctor?

  At twice the distance from a point charge, the strength of the5*l0qivm.zp f electric field

  Is it possible to have a p-8 q,6 ky *d4ontoy:s *w ow kfq7jvj8q.t6nvzero electric field value between a negative and positive cvfnw.kw48-ykoqjvo 8* t: q t7psoy*dqj6n6,harge along the line joining the two charges?

  Is it possible to have a zero electric ; axdnuk(wlsk*4s)-l field value between two positive charges along the linu)( l4- nwk *sxal;dske joining the two charges?

  Electric field lines near psitiu c2 -pecrb+q, rr5kt7 pcy49uve point charges

  The electric field s32he0phqu)orgf 2) ej hown

  Can electric field lines intersebjw9bd 5lc 216cw. vgfct in free space?

  A solid block of metal in electrostatic equilibriu9 8 fxyd8eosw6m is placed in a uniform electric field. Give a statement concerning the electric field in the block's int xdes9wo8 f6y8erior.

  If a solid metal sphere ane cre0a2rw+k2 rjzk4-d a hollow metal sphere of equal diameters are each given the same charge, the electcer +-w2z4 ajrkker 20ric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whereplbd+2e ;x b3 4ndy72(ssiig f a uniform electric field is directed straight upward. What can be said concerning the charge og+(s sd7ni4f3bil eb;p2xyd2 n the block's top surface?

  If a conductor is in electrostatic equilibrium na9elwz*kne 4 .ear an electric charge

  A positive point charge is enclosed in a hollow mew 2n,7/ ygoe xaf9z trzsx):q,tallic sphere that is grounded. As compared to the case without the hollow sa: ,tyw z xn og/z,xe2s7)rf9qphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriu5 ( +vm ni7 fwgavn14 d-cs/7js,stjffm.

State Gauss's law.

  The charge carried by one eki 3twe+oa)8 w;o dbh1,jrat/lectron 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 morm6ht36f7bhv w e protons than electrons does this piece of plastic havet7fb3hm 6w6h v?

  What is the charge on 1 kg of protons 90(gozk/og )k(nb peh?

  An atomic nucleus has a chz +4cnmj+st lz 5(fj3yarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepa,bnsnkls s;0 kx tf5pc;e.:d 2rated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is tcsft kdx sp;eb5l.:n ;n2k0,she magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, a txx3obc0he2.b7m: kv sk2-s vh( yk3and the force between them is 1.0 N. Whak:7k bs xha(h30ckxm2 y vs.23tbo ev-t is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How faxk:2 wmm5lm:ur apart are they?

  The force between a z yt. rredv. sile v7g73r5(myb,3g7c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper )(7cn,euvx puience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forc) (nxpuu7e ,vce between them?

  Three identical point charges of 2.0 mC are placed onqy fpc 2r)wm3157hqk a the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, rcy qa 2p w3)7hkmf5q1and 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 plf.l)lji tw,2a aced on the x-axis. A charge of +2.0 mC is placed at the orf, lwjt2)ail .igin, -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 which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = -f,d-m 1a/k;oocysxzcj ( ch51.00 m; Q2 = 3.00 mC at x = 0; Q3 =;ofhcc(d c-o -a1,j5mzy/s kx -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a u;t1,1eqdrqfsquare, 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 char; u derf1,t1qqge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC el2mp r)zw ft o1*0.jyis at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude owe*r m1 0z lj)fpyto.2f 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, cm42ng.xslrf*/i on( 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net foxcr . s*fl(in42nm/gorce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqx qf:4eb-zy *zq9x5u uvc3d1vuilateral triangle which measures 30 cm on a side. What is the magnitude of the elubq:u 3zzxd9qfx - 1ycev4v5 *ectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepb;7domqe2da 1 .cm 8naarated by 3.0 m. At what point, on a line bet2mnbd qaem 7o18a.dc;ween 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 r)2bpe v+97ooyvg*sw origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis ca2 v e )ys+9wr*pg7bovon a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chgc0.tcn-0f r x gqd),targe -q is placed at x = 2a. Where can a third posititcgqt-)g ,fd0.crxn0 ve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total qf;fo0,wa kh+ a- ztb05vajg7of $4.0 \times 10^{12} \; electrons$ 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 o o)cs4e; .ph os yatc6g0)9wvdf a fixed proton some distanceo )4wa cy e0so phv6c9s;.)tgd above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonqs6sy a4; nzsstwao,0q1;)gm point by nonconducting threads which are 30 cm long. Both are given identical c qsmsa6g,t0;;qs)an41o y s zwharges, 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 the ele7+z)yhf(to pn v 3lx)).msfocctric fielf( zol)m+.tcf7 o)xy)p3vhn s d at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction ofybxcplw kx9)q+; -+yh the electric field at a distance of 1.50 m f+)x ;yx+c qphwlybk- 9rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small t 1ov q0tuzsw0 lej 8/(ts*re g5z)y1px/f r(xnest charge. What is the magnitude of the electric field at the locati(roz)s 1*ruy8l/5etzjx xnve10psftg0q( w / on of the test charge?

  A 5.0-C charge is 10 m from a s2r gcf d p,(dj;fagpjj5e 7;7small test charge. What is the direction of the electric fielf, (gpr;jpedf5;gadj c77j2 sd?

  A 5.0-C charge is 10 m from a small t2-y ex pyu1v8hest charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at tyv x8 yup2e-1hhe location of the test charge?

  Two point charges each have a v,d- xq1egunivdg ;jqr5+z5o4alue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point migo5durg+ v- j,14iq;x enq5zddway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and c sj777 5h1 -zg(bncaxap:zs ca -4.0 mC charge is placed at the 50 cm mark. What is the electric field at t77:s apgcj-xs5 b ccz hzan(17he 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of dl4iwy6tx k6augw vc9+0vrg10 uk z0: a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining tk 0uivx+l9z1gy:6 krvcwa d4u 060gwt he two charges is the electric field zero?

  Two point charges of +3.0 mic(ux u.jx3bl v-4f- oC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of tho-v-uxucif.jl 3 x4 b(e electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarn j+hl3 0tktwq:pfr1-e of side 0.50 m. The last corner is occupied by a -3.0 mC charqw-f0 j tnh: +kt3lpr1ge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ata /v,g/dry5b6 hujgf7 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 at (0, 1). Whay fabj/r,/g5 6h v7ugdt 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 itq 5 7n(ao + 2cd8ertv/zb-jfws is placed in a uniform electri7j-+w von fs2r 8t 5/a(bqezcdc field. What is the magnitude of this electric field?

  A particle with a charge of e3k5bo s*i 07izxg4g u4.0 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 wv/oa)p + ro;yelectric field of 6000 N/C pointing downward. What charge must be placed on ta/oo yw;v+ p)rhe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed inu4,:mnc 8rjvf side a uniform electric field, and is suspended agai r: mfj4,vc8unnst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 :/2vsfbuxts5- 2rj wuin2jp5 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fromurjsbspf2wuxnj-v t/5:i522 the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the el bozde:40 y:4dqz6t8.fsvtvsf 1bmp1ectric field 6.0 cm from the 0szmyvfo146 dspzq:eb8:t 4d.fbv1 tcenter of the sphere?