State the law of conservation of electrk9po6y 37phvf ai6gr)ic charge.

  Is it possible for two negative charges to attract each ot(:8 5 pbtvjcjaher?

  Is it possible for a positive and a negative charge to attra zjgt7ek -4i1ifu8j inze32z(ct each other?

  A glass rod is rubbed with a piece okep. 2e:u: pn ala:h0.rhibp (f silk. During the process the glass rod acquires bhpa:eek 0ar.:. :i n( h2lpupa positive charge and the silk

  A proton carries a

  The model of the atom shows kaej3)zte 3al,0oay1jk 2t x ,a

  A neutral atom always miv q74h ;c6 l-yklhwlm7)za.has

  An atom has more ele dhdu , xs,jz/6j(vhh1ctrons than protons. The atom is

  Materials in which the electrons are bound very- nxx /h.rk awulaz8o2s9tity8 wd;- t8 i3bc: tightly to the nuclei are referre 3i2tw wans 8l kx-uzxt89hya-o/8tcib;.rd :d to as

  Materials in which the electron vpdsvcln,x6mzn67+rt q l ;1(s are bound very loosely to the nuclei and can move about freely within the material are revc t,6mpqx(lln7n6+v z1 s;r dferred to as

  A negatively charged rod is brought near one end of an unchargev.3 u y,ukya4axj(1 zoytuq(d:h *0 add metal bar. The end of the metal bar farthest from the charged rod will be cha*a4.0oudz((u1t d a:,kahxy q3y j vyurged

  Sphere A carries a net positive 2l9mzsm eu):hcharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correc:lmus9m )ehz 2t?

  How can a negatively w0s .dwmvx+ .soj)p e8charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched wigde.)vfi 6gh8 th a positively charged glass rod. The electro.d)gghfi 68ve scope

  An originally neutral electroscope is grounded bri*ic oem(;yw3 wt4o5akefly while a positively charged glass rod is held near iym ie4o to *k(wc;35wat. After the glass rod is removed, the electroscope

  A positive object tousk0e 7hy,ma0 ika*7 ayches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroak 7 i*0kasy7ahm0e,yscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insu910gr r c-axdflated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls afrcr-19g x0adlong 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 the Coulomb con jspu87 hdi7t: 0cvdr6vs6g/ ustant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c61yon+*l8 gcu fw:rjx harge is larger in magnitudenfujo8 r* +xc6yw: gl1 than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are place mrdf5tldc0 8a+s lt3;d near each other on an insulated table. Which statement best describes the electrostatic force betweefl+tad 0m;3 sdrc8t5 ln them?

  Two charged objects attract each other with a certain f )0rrmz2e**f8pzq jvforce. If the charges on both ozv*pq2* zrmr8fjf e0)bjects are doubled with no change in separation, the force between them

  Two charges are separated by a distzpu ./sl 7baeldr+a44ance d and exert mutual attractive forces of F on each othealdbl4+ep/ su4a7r z.r. 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 thub/gmwc1bvoeq50, oy,/ * goz e force between thbgocv1q/o ubwz e5m,, gy /*o0em 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 prot+oc*:ityd 1bpx+2ys57c. vuh sw- i feon are separated by a distance of 1.0 m. What happens to the magnitude of the force on s5y+u f+yi.:wb1eccp-di s7*x tv2h othe proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of tu; -n1e9kqib1uji/ g1.0 m. What happens to the magnitude of the force on the fir;1 in1jbkgt-uqi/ 9uest electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What bw23lue15dlu )0d8vk gtlo9zhappens to the s 9ok1ldvbu5wzl0dg2 l 8teu3)ize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed abthyt8 5oj8s hw r(e60sk:yi 5t 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 t(55j 08 sr8tyw:oib hey6khs acting on the positive charge at the center of the square?

  A point charge of +Q is ple2i 5de)n 8vi+z;tm br4i9 y*evik.ciaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostai4vdb 2*yrz 8 +;.cie i9v5tike)m enitic 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.cszo. .n8v mjctor?

  At twice the distance from a point charge, t2rughv(0 /wfh he strength of the electric field

  Is it possible to have a zero electric field value between a negativubm-7co 5zn0o rtj:) le and positive charge along the line joining the two )7m 5:z rjncb 0t-louocharges?

  Is it possible to haveu1 (dpom+ fdv5 a zero electric field value between two positive charges along the line joining the two v(5mp duo1+f dcharges?

  Electric field lines near k8-m17 ymkbfx g+z +a)e3upit psitive point charges

  The electric field showombln -m3vfeh5+/al u f72qk4 n

  Can electric field lines interseclznv0;jq5qypp0 z:ejqpvs9bnugu6-5 h , )5mt in free space?

  A solid block of metal in elec /9t)ju:3qp moh yej+ctrostatic equilibrium is placed in a uniform electric field. Give o93et/cjphm+quy) :j a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a d9zvr+t;ok 6j hollow metal sphere of equal diameters are each given the same charge, the electric 9t+v6rok jzd;field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a w2;8 xsdlkz* pksu7it 8ooden table in a region where a uniform electric field d8ts s 7l 8xk2ikpz*u;is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrinjjiro; k; rln9+7r ;ium near an electric charge

  A positive point charge is enclosed in a hollow u+ze1rr3qex(l 7x :ocmetallic sphere that is grounded. As compared to the case without the hollow sphe (e3xlzxeqcr+1 7 ro:ure, the electric field at a point directly above the hollow sphere has

State three properties of conductorsj uo.b x.93ebga;sb-8j0f bsl in static equilibrium.

State Gauss's law.

  The charge carried by one electron isb94g eg9 untj 0ng1f+i iey f2lvv8z4ysan,4* $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +c 9 (- v 1ph.1mftae/ hpbkoq:tc3d:uc2.00 mC. How many more protons than electrons does this piece of pb uc/- :tdhco(.:f qv e1t 1pcpka93mhlastic have?

  What is the charge on5yl1+eero,x9xwwn -l 1 kg of protons?

  An atomic nucleus has a charge oyn7 75c nn8 w93r/5sh um pl2kurli6bif $+40e$. 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 w) x0*ogjw 6n tchb/s7values of 2.0 and -4.0 mC, respectively. What is the magnitude of t6o 70xnbwjw/*c) tsg hhe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the for,(0;2)tzh-tqib egx6 ns nm gdce between them is 1.0 N. Whq gzmg 6) ni0(t 2,debsthnx-;at is the magnitude of the second charge?

  Two 1.0-C charges havebwiflillf5( );om2la2x d*nf 4mn 1lk,*p d. d a force between them of 1.0 N. How far apart are they?

  The force between a n3s3gy7v;esbu/zk*9 amks7y$30 \; mC$ 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. If theyr nbe(ie/3k,0aso b *j are moved to a new separation of 8.0 cm, what is the electric force bbr kb a,/(noi03*es ejetween them?

  Three identical point charges of 2.0 mCn q:k hkfkjmz ( 3;tvz(:y;vr3 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 tz((:q;n3vjt3 myhz r: kkfv;khe 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 p65-oxgz*jwiomoq,o ; laced on 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 forcew 6gi*o 5;,xo-ojo mqz which acts on the charge at the origin?

  Three point charges are located at the following (-,f +larrarjpositions: 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 f rfaa rr+(,lj-orce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a se 6ff9vbjwf;5econd 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 positivjf;5wefvf 6 9be 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is gs26 e *ia )cxhtfpkegp+2 l+vq2lgqm3ia90 ;at (0, 0). What is the magnitude of the net force on the 5.0 nCl0 ehg9 ixt6gvq pk+i32;qf)scpam *2+ lea g2 charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.-n19e6w nn9doaz lcw810 m); Q3 = 5.0 nC is at 8e9a c91nonz6 w-dwnl(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateuxgm0)j3uo i (ral triangle which measures 0gu xu3j m)io(30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, :m q+y j4+gvzjwhich are separated by 3.0 m. At what point, on a line between the tg+zv:+4yjjq mwo 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*4 h2 lme.mb5svcfujox;p0q qr4 7e .y a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge b* u4 7c m2jropyel.h;xvqe0 fq54 .sbme placed so the net force on it is zero?

  Charge +2q is placed at the orig, e6zg5k p* yxxdwm7+jin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so t *x75 wy x+gpmkj,dez6hat the force on it is zero?

  A copper penny has a mass of 3.0 g. A to j:g,jdy* 9tol --is-ray(gcttal 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 againb4tr2c7a cf /zst the force of gravity by the attraction of a fixed proton some distance above it. How far above the b4crfza/tc72 electron is the proton?

  Two 0.20-g metal spheres are hung from a common point byg70(skj -u wk;: ejdp9urj1 zh nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostau ;s-7:rphwku( 9z1kdjj0egj tic 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 f8 0j ck8pme /cnsze(*is the magnitude of the electric field at a distance of 1.0 m from the nucleus?kjfc8eepsm*n8( z0 c/

  What are the magnitude and directiosl:ni *t3 /usqn of the electric field at a distance of 1.50 m from a 50.0-nC c sns/3*lutq i:harge?

  A 5.0-C charge is 10 m from a small test charge. 9ya8pm /fq(jm2rqs 6,lh g-r b What is the magnitude of the electrmh,/a2 (mb -jqq l9py fr68sgric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directin khmc)b5/b)0dzly p,pz2 a1yon of the electric field0b n)y 2,b k zzhm)d5ppl1acy/?

  A 5.0-C charge is 10 m from j -(zj1(+fyudt :6idna;u f;t(q zarg a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loc u:jr 6+qz(f-ad1dgu(; jiaf zyt(t;nation of the test charge?

  Two point charges each have a halnh(hpy*wa7za4h)0 7e6l,xgn r5 d value of 3.0 C and are separated by a distance of 4.0 m. What is the electric 6 g0hn5pd4naw,7h lazr7(yh) e*xha lfield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mhft24-fee6c j bci84p tl 2cb5eter stick and a -4.0 mC charge is placed at the 50 cm mark. What is theeb5t cc2t26b8h4ielj- c f4pf electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mete(vu)b x8 azu *l a-trevs(l4 81vc(rbxr stick and a -4.0 mC charge is p( vvstle1b rrx(a(vz 4 -uau)bc x8*l8laced 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 mC arq87;ba)4bcn f e7nrv4t,id 7frxt*bae placed at x = 0 and x = 0.20 m. Whatartni af)vbxb7fqd*8 nb4 4ec 7,t7;r is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three o(rl r3,c+aa 0gb5 mezcorners of a square of side 0.50 m. The last corner is occ ecgrl05o+,z(m a3 braupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cod4u 2sgf* uicybatx4 ( y4vu20rners 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 fielddib fuca*4t0yg u4 (2vxy2su4 at the square's center?

  A force of 10 N acts o2t xnc;7ku m-rn a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fiek-rx2;u tcmn7 ld?

  A particle with a charge of 4.0 po vwat1 +*at6oq,zl 02 z; gyez31rqfmC 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 a5y1rby x ;86vzjdqoy )n electric field of 6000 N/C pointiv;)ry6dyqx8 jo5 zy1bng downward. 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. The ball is placetc8w+oq-9p/ko1 mqo md in +ck1t8qm-m w opq/9ooside a uniform electric 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 thee 6hm5s+n4)hpr 2l+axy -3x qhq-5udau b b/pd magnitude of the electric fiba- he3 xyhb hu p5n6dm+5-2xqq/pl)dau s4+reld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.w3jt t,rv l3e:0 cm carries a charge of 3.0 mC. What is the electric field 6.0j wrt:etl 3,v3 cm from the center of the sphere?