State the law of conservation of electric ,bo b5ah 11guhcharge.

  Is it possible for two1td8cd pqsymf 1 ,s1+o negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each oth4bv s5dhs)s e9wi;q3v er?

  A glass rod is rubbed with axewu a21gcdo+* y */sc piece of silk. During the process the glass rod acquires a posi a+sw/1ydeuxo*2*c gc tive charge and the silk

  A proton carries a

  The model of the atom shouf 27omz0:jqbkk0)5ejc jw j+ws a

  A neutral atom always 0k :sh2 amwu4bg8t 5jnhas

  An atom has more electxsopr i/p9.(b fsac7rsa(0wz -ve (h mn9g31hrons than protons. The atom is

  Materials in which the electrons are bound8l)rym(4 j*rqd gwl -e very tightly to the nuclei are referred ty qr*4me j(rdgw)-l 8lo as

  Materials in which the electrons are bounz-3suc nwj73 v73g wxjd very loosely to the nuclei and can move abu gn-w7 s3jc3jz3 7xvwout freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncdk28 k wtb6(jt8 d9gvaharged metal bar. Thej 2 va8(b 6tdtw9d8kgk end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are rvcdd9 ; 1vs,oplaced near each other on an insulated table. Sphere B is v,cd sd1 9r;vobriefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged roeetpfs4 s y-3.d charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelt+at s eghuniu: s40;dod5k7.y ,6m.u eazkf- y charged glass rod. The electroscope 0fsd yhuaok. ,.5:6+ -g;tukueamit7 dezn4s

  An originally neutral electroscope is grounded briefly while a positivel.c z..gbdlij 6y charged glass rod is held near i z.lcb. dgi.j6t. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and5l la o9abmjrw;*u, 1tuv 2*et the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happewt1a25o;mv al*ubl, urjt*9e ns to the leaves?

  A large negatively chargedgn q3cms /e7tcb9 u.u7 object 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 charge on each 7 e g. muunsq9c7bt3c/ball?

  Charge is

  What are the units of thef ep5u/o7* qnyykyxhd.).m*ho c og6; Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a 2;fsg7gdr 7it distance d. The first charge is larger in magnitude than the second charg;d 77tirf g2sge.

  Sphere A carries a net charge and sphere B is neutral. They are plkrw81gxh0 gg*aced near each other on an insulated table. Which statement best describes the electrg0h1wgg r*x8kostatic force between them?

  Two charged objects attract each other with a certain force. If the ch fts4fqm( mu0 qn9pq+ ,ca3 13jn;ntavarges on both objects are doubled with no change in separation, t,sq31f3v;0+ q4q9amtmpac fnn(unjthe force between them

  Two charges are separated by a distance d and exert mutual attqpvs 50h09 +l3a w-xfmjyp*kj pxp82bractive forces of F on each other. If the charges are separated by a distax jx+h psbmp-vywpk pl00a f59q38j *2nce of d/3, what are the new mutual forces?

  Two charged objects attract euq5w* nh ys3 bm5vp7g,ach other with a force F. What happens to the force between them if one charge is doubled, the other *7hpvu 5g bmsn w53,yqcharge 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 bx2zn6nos:j ywv-7:k t2ky u *xy a distance of 1.0 m. What happens to the magnitude of 2w*zku-tx:6xsvy o: 2knyj7nthe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are se22c;j aoh.t qfparated by a distance of 1.0 m. What happens to the magnitudeq;t. 2ohc2 jaf of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance m ,pgzleyh*uro7 x,7,ayg .4 gof 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protonr,mylu ,h7 o4 exg*ggp.7 az,y?

  A point charge of +Q is placed at the center of a square. When a second poin v 0lzfo(g3v0nt 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 ofvvl3o0 (fzn0g 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 a n;1pv2r rk l3uh *0kp,lp9loon equilateral triangle. When a second charge of l; pvu 2o*pn ro r1kllph9,k03+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 ve)rbbodgn +2o:x sln2 ;wfi+-uctor?

  At twice the distance from a point cmt-i2 rapb-p) harge, the strength of the electric field

  Is it possible to have a zero electric fr k )jh98we4wiield value between a negative and positive charge along t iwh)9kejw8 r4he line joining the two charges?

  Is it possible to have a zero electric field value between two positive charges)m5t4kzppi*; : kjrxw along the line joining the two chargewk )4x; tjpmr: zk*5ips?

  Electric field lines near psitive poihv,ph2n i-l xp r/ti(-nt charges

  The electric field shaoj o( .sav9cnog0/yo .o:h) ra5yhx;own

  Can electric field lines intersect in free space?4 2;y4d)v8 o)u f5.l:wxpm jxlkctzaq

  A solid block of metal in electrostatic equilibrium is placed in j4n0ke5 *+awopua3ke a uniform electroa5k kpnwae3e* 4j0+u ic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metadle2qt7) pn(hq0 y+yx: xar)a l sphere of equal diameters are each given the same charge, the electric field (E) midway betwqay2xy r l+ x 7p(0:dhetan)q)een the center and the surface is

  A cubic block of aluminum rests on a wooden tab*n i8g7 -jnrd3xy3c/,wt )qa7 fmd9ew su/lnile in a region where a uniform electric fieldun3i )gni 39 /dx8qfs jwyd7ar wm-7,ec*/ntl is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium byb *h6*cn-j0 em xafw kw//*enear an electric charge

  A positive point charge is enclosed in a hollow metallic sphermu ze+)-nl je-e that is grounded. As compared to the case- ejnl)+e-mzu without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors :5 dh bfs9bzoo 501 c-lm2mitmin static equilibrium.

State Gauss's law.

  The charge carried by one electron is gvlvx,y b(m2cs2hi l5 dm1e2: $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net cha);a3fut h /q,jc fqm9hrge of +2.00 mC. How many more protons than electrons does this piece of plastic have;,m9tf /ucj hqqh3fa)?

  What is the charge on 1 kg of prviao b2/ls*ytmd83q4zx )el 1 otons?

  An atomic nucleus has a charge ocf, 8i6l- f1ncdoep+5;x xni86f my bcf $+40e$. 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 q+/u4) k5job3 lchlhvf9 8 iof-/bdcf of 2.0 and -4.0 mC, respectively. What is the magnitude of the elf)qo -+h9bccvold3u8k4/l5b j/ih ffectric force between them?

  A 1.0-C charge is 15 m from p .v siqm:du.1 fpnu.)a second charge, and the force between them is 1.0 N. What is t f1upsq ) vu.:din..pmhe magnitude of the second charge?

  Two 1.0-C charges have a force between th(qk a-)cdpp6w em of 1.0 N. How far apart are they?

  The force between a 0. y.gktoz85wpqq wi4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inoh *ql 7m2*gqifjt6a1 itially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.oqth1gliq*f7 *2 mja60 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed onbyn3 , tatm;thj 4snot..0: pb the x-axis. The first charge is at the origin, the secoh; :to 4a tnnbtbjs.,3pmty0.nd 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 origin?

  Three point charges are placed on th xn iripny:f(m11:d9wb h(rd3e 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 mamnn1: h 1i fd(ypw9 db(r:i3xrgnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at)m o.kx(ogcnczxt, 63p5o do 7 the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mCdnt 6coo,.c pmx(5)x3g kooz 7 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 ceyp 7ub1qj/e :h;b 8nv0wxwhz+ nter 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 thvjh:xbn z/8hew;7py+uwq0 1b e center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 c8bnmx gska.y)0t,a5 u e,:fo= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is t0:b,)as8mt y x,aue.gf 5 nockhe 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, 0.10 m); Q3 = 5.0 ny 2,uju*.xx utg-vr :0 -rgkngC is at (0, 0). What is the direction of the net force on the *kgxgturyv2 - ur, .:un0jxg-5.0 nC charge?

  Three identical charges of 3.0 mC are placed at th,p4 jmzhwl b-8e vertices of an equilateral triangle which measures 30 cm on a side. zh 4j8wbl,- mp What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At .8 5wkcs1hza;e/7p: f pm xskywhat point, on ayfack 7:58hw.xp ps;/ s1ekz m 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 +9giq : 80r98afjul v2mj.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force oqa82r9 0 ug:mvlifjj8 n it is zero?

  Charge +2q is placed at the origin and charge -q is:pfc2 ax.io0pezyk8f y ;9 q(u placed at x = 2a. Where can a third positive charge +q be placed so tha29yc(y. fazx8eip 0 ;qoku:f pt the force on it is zero?

  A copper penny has a b.svj3 a9wzi+m/zeu)3 swu0klwo+l7 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 against the force of gravity9aeu 20ly7ljdh+p*roo ; sgft,5-e y fer rb6( by the attraction of a fixed proton some distance above it. Hf(h uerrslaoj,fe toy67 2l0yrg*;p-9d5b +eow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductipu;m8n (haq6iv,cf 4gbiq6 q( ng threads which are 30 cm long. Both are gin( ; 4a6ghm,iq(c 6ivub q8pqfven 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 ch . mnwkls90e )n63biejarge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from 0.wi m)blen3 se6 n9kjthe nucleus?

  What are the magnitude and direction of the electri-k gy oar.8req( f7j.zc field at a distance of 1.50 m from a 5jo .g erza-r .q78(yfk0.0-nC charge?

  A 5.0-C charge is 10 m from a small test lnu/i9ajm pbf (9mgtb3wa - +7xm6ze4 charge. What is the magnitude of the electric field at thega u m4m6m x7lw/in9ptz-9j3e a+ bbf( location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wha 0;9c3ztrqw(odv ocdhh* e vtc5c*t46t is the direction of the electric fic3 thw4 9chq0(o 6v*d5 t* crvt;edzcoeld?

  A 5.0-C charge is 10 m from az 2kmb t)3uo9mwi(i-m small test charge. What is the magnitude of the force experienced by a 1.0-otw b )kim3m2(zi9 mu nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated j/ocy,: ph4 )xi *s 4(9ozlr)tqxbn7ehpop-k by a distance of 4.0 m. What is the electric field at a point midway between the /ylcpkh -4t9 op:bj4n,x 7o* hpsox))irq (eztwo charges?

  A 5.0-mC charge is placed at the 0 cm j:a18i)o khc3e 6tb wfmark of a meter stick and a -4.0 mC charge is placed at the 50 o hejw3it b:6f1k)ac8 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andcm9qre; pf 9gwe15u wi):t8 ir a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field ze1reg cqti5e rwwuim p9:)f;98 ro?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and aeea+e/e gv8/x = 0.20 m. What is the magnitude of the electric field eaev/e/ g+8ae at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 bb :) 2nwwr- a:hr3usfojfvwp6d3.9s m. The last corner is occupied by a -3.0 mC charge. Find the electfpwr.wv-fd6hb2 bns33 :r:a)w o9ju sric field at the center of the square.

  Consider a square which is 1.0 m on a s- 5 df6bxrhesn nu 7tu)vvv0(1ide. Charges are placed 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 at (0, 1). 0u- dnv ube5t)rf6vv xn1(7shWhat is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a chawa-;k(ugwneg7:2n6 mu8gjn t rge of 5.0 mC when it is placed in a uniform electric field. jw2k6uuw(;ne8 mt7gg n:a g n-What is the magnitude of this electric field?

  A particle with a charge of 4.0 mCzinlr2 ch:vu,d4 d t1; 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 p4qqqs)o/gn s6dpa)frt14p p2s w )zy.ointing downward. What charge must be placed on the ban1qs)2o6q)y4zsag rt4fdqppw.)p/ sll for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plaqzt e);s-fur w:ss/ydhzs a9zn1 )- 6tced inside a uniform electric field, and is suspended against the force of gravity. What are the maa ): zwnzsu 9;st-qs y6zf/e)1str- hdgnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wh+vn4yk n0aj*3 phno -r/tfkk.at is the magnitude of the electric field 5.0 cm from the sphere's sunvn r af ky*3k+. nhjp40kto/-rface?

  A metal sphere of radius 2.0 cmn.tukmkav 7:z;)vmp(i;z4 f :csns,hmw-l9l carries a charge of 3.0 mC. What is the electric field 6;i(-z m cv:,u km;tw s)ps9nk7va:f4mzl hln. .0 cm from the center of the sphere?