State the law of conservation of electr y04 mbfu,mea5ic charge.

  Is it possible for two negative charges to attract each a 1m sb6ucb3q/other?

  Is it possible for a positive and abnya ))(hsgw,gz4 qs + negative charge to attract each other?

  A glass rod is rubbed with a piece of silld *am0y j:v4ik. During the process the glass rod acquyv4*m i ald0j:ires a positive charge and the silk

  A proton carries a

  The model of the atoc16b7; jca xdv*82g,o g bbswsf2j*r sm shows a

  A neutral atom always d-k 3:qljfgpm;6c3m or:m z,:u sio(e1ek* qd has

  An atom has more electrons than protonsih ek /p .kdc aqo06 2 (cd41cca5s7xvoe+tw1z. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referrzezya,u b 1m9re 80pb6ed te0y9r1 zeubmp,86zba o as

  Materials in which the electrons are bound very loosely to + l*wwqh9en7 z4 n k0ucxg)ef(the nuclei and can move about freely withineegc u)kwh7*(l n xq+fw94z0n the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bbdvi76z*( o astu*g*p ar. The end of the metal bar 7 gtzuo**b* 6psvdi(a farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutwpa0c a q-r-ml0z i2o/ral. They are placed near each other on an insul 2amia--pq co00/w zrlated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged r 8xpv m-)gq(vvod charge an electroscope positively?

  An originally neutral electroscope is brib3yz), tnvkc/ xytj2. 2dtb l8efly touched with a positively charged glass rod. The electroscop 2c2xn,dkyltbt .t8 j)zvyb /3e

  An originally neutral electroscope is grotqtl j) uin:zza(6f ..h6zd3 sunded briefly while a positively charged glass rod is held near it. After the glass nf tz tjz66.:ldqh zi 3sa.u)(rod is removed, the electroscope

  A positive object touches a neutral electron3v;wfpy z,;r(t1 ajgg +pz f+scope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wh ;1pwnrapt+;z,3jz gvy(gf+fat happens to the leaves?

  A large negatively charged object is placed on an c6 j)1nrssnqswb6h3j/z.z n 7zzo5 l: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, bu jjn7 z s)qz5b63 w.sr1hclnn:sozz6/t 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 co p05e7k1*cnqh0yg zhv nstant $k$, which appears in Coulomb's law?

  Two charged objects are sep/tp70hn tdsn;.yshq* arated by a distance d. The first charge is larger in magnitude than the second csh7pyqn. dn/ tt0;*hsharge.

  Sphere A carries a net charge and sphere B ix ucxeb0c,qa;*d4u( --psq lhs neutral. They are placed near each other on4pq;0e l as(u-xc bd-x,hc uq* an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chaqt 3ei6k t8(rkrges on both objects a 3i8kert 6qkt(re doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attraci:,zp6t .t+ihu c.gnwtive forces of F on each other. If the charges are separated by a distaut+ gti6 :. hipzw,.ncnce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What , tkec hvo5+s+ :cyi/ /ynq3y4xuguzquzb9 -.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-fourth its original value? Theuu+k+q s4 -u coeqxnyb t,hg3z.iy9/cz/: 5yv force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. nf 5ijn3 (l- :haqa*urt3ts.h What happens to the magnitude of the force on the proton if a second electron is placed next to the firsf.hn3:ut lj3-qiah 5(na srt*t electron?

  An electron and a proton are separated by a distance of 1.0 m. Whatbc; 0rye9gy, m happens to the magnitude of the force on the first electron if a second electron is plag,yye 09bcm; rced next to the proton?

  An electron and a proton ol8pzfi ;hen b:0 ;t0qare separated by a distance of 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 prp ioz;lfn: 08 qbthe;0oton?

  A point charge of +Q is placed at the center of a square. When a second point mom: z-,hm8q vcharge of -Q is placed at one of the square's cornersmm v-qh,o:8 mz, 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 at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. ;gvbw:veou l. e v- flad0(*;eWhen a second charge of +Q is placed at one of the triangle's vv(ga-edfu e:ll*;ov; w0.ve bertices, 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 vw+ct() z: jyfcector?

  At twice the distance from a point charge, the strengp*sk2-au6 i sgth of the electric field

  Is it possible to have a zero electric field value between1iink uah(sr sf(j4:1 a negative and positive charge along the line joining the t sk( suri:1hn4jaf1 i(wo charges?

  Is it possible to have a zero electric field valucx* b.7kngwi4 e between two positive charges along thg.4 ixc* kwbn7e line joining the two charges?

  Electric field lines near pk,23cie x8nijsitive point charges

  The electric field s sgyu0 qqrm:l97o.o0c hown

  Can electric field lines intert1ddneq/8 jyu-2/.l x n)gqnjsect in free space?

  A solid block of metal in electrostatic equilibriumb+6cwuz gr -(p is placed in a uniform electric field. Give a statement concpb6w czu+ r(g-erning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each 6+kuuvrb u,/+rq0sqi given the same charge, the electric field (E) midway beti6v+uq+r0rqu k, bs/u ween the center and the surface is

  A cubic block of alum29se .( z,kgdiwxyi i3inum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfacek93e, is xy 2.wz(gdii?

  If a conductor is in electros fbng7gk)-flr1q w(g0tatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grou p2,av*wi)qymx kj ;9znded. As compared to the case without the hollow sphere, the eley2zkj;) w,* vxp 9aqimctric field at a point directly above the hollow sphere has

State three properties of conductors in static equt ihvt;j2 w +m3r,xm:pilibrium.

State Gauss's law.

  The charge carried by one elects1ibgdv/ji rj (b).,t ron 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 aea)3 mqscd0 o 9l11alv net charge of +2.00 mC. How many more protons than elel1 v0am193sq)l ocd eactrons does this piece of plastic have?

  What is the charge on 1 kg of pro7b qnlui2dgfz ;/p-/70 xwnjmtons?

  An atomic nucleus has a chargedr;nq)8g s 8fz of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1h u2keny(1y2 u 1x5dyg.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force 2( d1eu2ny 1ku5xghy ybetween them?

  A 1.0-C charge is 15 m from a second charge, and the force between7qpq+mg;xd+ im)n eh -dcf:3e them is 1.0 N. What is the magnitude of t xef 7qdedmm:ign3+h p+q-c; )he second charge?

  Two 1.0-C charges have a force betw+/pp8 ceb/ vv/kfv ve3een them of 1.0 N. How far apart are they?

  The force between a abo y(4 /bor0m$30 \; mC$ 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.xe6 ;2qdk 9ynw0-N force. If they are moved to a new separation of 8.0 cm, what iqdxe y2;w9k6ns the electric force between them?

  Three identical point charges of 2.0 mC ares y)y+a*g* mxb g v;s80he8oje 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 o 8a*jm;)*gyysvg x+h beo8 s0en the charge at the origin?

  Three point charges are placed on the x-axis. A charge 2 a65e6,qoraw)5wfq4ta w sfam 37t oeof +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cmq5, afw owta w64a5 2 qee6sora)37mtf, 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 followsy3ia m4(bo vxbv)0:r ing 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 voar m) :xby34bsi(v0on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squso1v 8f 7u rjev-6xvb.2ewbc2) k cc2di0q i2ware, 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 7de2ru2wcvvxjwq )b2 .e-c16s ibok8vi0cf2the 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?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -/5h8bd3iw0je ae 9j; ou d:brx1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the3oj;: id ab5e 0/dh9rbexj 8wu 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is woltcqv otbi)/d2 mi3p3q,dzs.v 2g9e,8f u0 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i8o/3t.coe9qt,3vd2 0pfb) , quilwv2dig zsm s the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the 5/cnn0zv ofnj 0001ecyho rj:vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude ofjh5nvoz:f 0ne cocy/0 j0nr01 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 what poy) ;yoe9u5rts int, on a line between the two charges, would it be possible to place a charge of 5ou )e;y yrst9-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 = 4.0 d27nsxebs)kt3-t 0 v om. Where on the x-axis can a third charge be placed so thno0 st ks2xevb3)7t-d e net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2bznc4 ;s a/b(fhx 0g*4f nzhs*2egzg2a. Where can a third positive chargz2sz c/e;azfnhg s2h* 4gf b0b*xn(4ge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. As;mu)7 7jypnu-vh l:c r1c ,cs 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 gravity by the attbbakr+j n(q5 4raction of a fixed proton some distance above it. How far above the electronq+a k(jr 5bn4b is the proton?

  Two 0.20-g metal spheres are hung f-;vq hj *+llgxrom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thrg;j qx-lhv+*leads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge opqyas yx(v8s, /f3sk3gbed)l-: uy :m f +40e. What is the magnitude of the electric fi)y38ql3d(xfampvgss u:/y:ky, e b-seld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electricrk mzxp nar/sm rwp mu)szx4 r0/)6645 field at a distance of 1.50 m from a 50.0-nC charge4wm56xu6 nzmskap/4rz / m rxr))0prs?

  A 5.0-C charge is 10 m from aa jl-+: mia8 en6sd)su small test charge. What is the magnitude of the e+ s6)-m sdeaj ua8ln:ilectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small tes z0+:ai; pary2dicd7 at charge. What is the direction of the elec+:dya;z ac0pi i2 adr7tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude :,h -bbi.z2v+*mp9imnh viby 79ligrof the force experienced by a 1.0 nC charge placed at the locati im9.gibpr7l+y v*,- 2h hnmb:i9z vbion of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distancex2 k5ix fpwg,4 l)ol-d of 4.0 m. What is the electric field at a point midway between thf dp, g25wi) koxlx4l-e two charges?

  A 5.0-mC charge is placed at the 0 cm mark of ajt1j 0q q gtholeb6*35 meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is qb63g5l* tt1ohj jq0ethe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chwb2n4uo )b 47b ibww-ln1wip3arge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zei)wo-i4ub 3b7nnw wpb 21 4blwro?

  Two point charges of +3.0 mtltc45s6idyff - m o+7/tyyu:C and -7.0 mC are placed at x = 0 and x = 0.20 m. What is theyt:5yo/ fi-t4c+ysml7 t6du f magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squar.kjk uzks8f8k.*3 wjje of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieldk jku .k 8s.zf8j*wj3k at the center of the square.

  Consider a square which is 1.0 m on a ss0een- nr d4te/jbv:, ide. 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). What is the magnitude of the electric field at the s,n0nd /-rej4btsee v:quare's center?

  A force of 10 N acts on a kh 2 ta** (sd5qscxmwh*,4eyq7xy tq+ charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude h7,mwyt kdq5s*tch(+* 42x*a eq xsyqof this electric field?

  A particle with a charge of 4.0 mC has a mass of f 0xgcz9n,iqy8r4yl3p- qzck;/1wf )fy xj0 f$5.0 \times 10^{-3} \; kg$. 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/1.xw x;tudadrthd.cr )h7 29jC pointing downward. What charge must be placed on the ball for dh9cht;u..xjw7r2xa ddt) 1 r it to be suspended?

  A foam ball of mass 0.150 g carries a char 9u zrh(9 k1ba;+hbhxk6dp 5swge of -2.00 nC. The ball is placed inside a uniform elect9h1wpk(+ hhrxu 5ab; b9zkd s6ric field, 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 of +2.0 mC. What is the magnasp+dw ft+u7q,h.8ua itude ofhps. ua ,d ua7+ftw+q8 the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrim b (7qi (jy7y6wybbi;ig5d; ies a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere?; wbi yy;g5776(j ibbqy (miid