State the law of conservattsh 1wqf-2 9miion of electric charge.

  Is it possible for two negative charges n8jaono4n8:x: qx xd 828pbca to attract each other?

  Is it possible for a positive and a negative charge to attract each othtb;8wofr/k 8y71 aol ,e5pphker?

  A glass rod is rubbed with a piece of silk. During the process the glass rod 9cpzb 0am3hi- i n68xbacquires a positive charge and the- nbhib8z906p x 3cmia silk

  A proton carries a

  The model of the atood 2nka jkrf*-b3wf sto t63.2m shows a

  A neutral atom always nxavg *8hn0 z ;.;bq6qq jsw5bhas

  An atom has more electfr.awiy ,rmp3+yp :uo7 u+.ij rons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referrq.d6rhj+uq,5r vi(jp qm m0nwfq e 1-3ed to irqrdqwf ue jj(5v,0 3 h.n+q-m1mpq6as

  Materials in which th so*bm((ngg j,e electrons are bound very loosely to the nuclei and can move about freely within the material are no,m gb(j(s*g referred to as

  A negatively charged rod is brought near one end of an uncharged metal 0+hlxy0j ar*u bar. The end of the metal bar farthest from the charged rod w0 rl*yaju0 x+hill be charged

  Sphere A carries a net positive charge, and spherll0in) 8f p24fgp3t .eqsev;ae B is neutral. They are placed near each other on an insulated table. Spheq248;gie f)f3se. ll t0pna pvre B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargw499ar kxkl8e e an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged -31/2pr hwv:,e yjthfyj 4xlr glass rod. The ele3/- fj4hly:2twy,p xr vjr 1ehctroscope

  An originally neutral electroscope is grounded briefly :6 je r4riqe*twhile a positively charged glass rod is held near it. After the gjq 6et*4rer:ilass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leave 3ebjgsqqt4jjr w53qa w9gj )+ +(y:szs separate. Then a negative object is brwsq45 t zjj:y 3+wg9jbs3+(qre q) jgaought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objowkoq-y).;s0zfjhs6fz2ko w ;sa/s; ect is placed on an insulated table. A neutral metallic ball rolls straight toward the objectwzkw ;k-a ojo ;hosfssy/. f6;q2 0sz), 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 ball?

  Charge is

  What are the units of u.b c z-,/0kzj i y( ybo0abz7pgi/jz6the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lkwha ;e3zb,ye/x r,gw t8*jxogjl )9wnu d57*arger in mag,k7xnuytog) e abxwl; w3/weg5h* * ,z8d jrj9nitude than the second charge.

  Sphere A carries a net charge and sphere B is neutrz/xwh9e.d mcyt+g 2c;g x99ural. They are placed near each other on ancg e dx9h.w;/+yzucr9 txmg29 insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the *;;kselyh ylp t- 4v/o sevu)5charges on both objects are doubled with no change in sepa4s/l u)p *e5;lyhokv y -stve;ration, the force between them

  Two charges are separated by/l1syig) em8s0chc d ; a distance d and exert mutual attractive forces of F on eac )dyse0sic/l h;gm 18ch other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each othersy;(o,oak s/ ;aro4ne with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and ther/ason4;syk a(o; e,o 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 by a distance of 1.0 m. What happeniam0+h 6uthssoyyku u6ybh,h * *o -,5ia2a4ls to the magnitude of the force on the proton if a second elay, oks*m6 i 0a4ho5 t,iul +hayu2-6bhh*y suectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happenshdvefra5k( j+7xrr-m d 19kk, to the magnitude of the force on the first electron if a second electron is placed next to the 9 r7fhr,evj(+ad5 d-kmkx kr1proton?

  An electron and a proton are separatedfxjj p:bu6 :3l,n z4za by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.5faz : j:6u3 npx,zjl4b0 m closer to the proton?

  A point charge of +Q is placed at the center of a squrrh4: 6 g0lz:1 0ucwd.qfy xmlare. 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 centq4yu mx0d::1 r0. lrchzglf6wer. 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 equha krz, 7ewa 9(0:ztcpilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an w a9a:zhzc(petkr ,70electrostatic 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 vector?hp4,uwl jymz bfl83 6)

  At twice the distance from a point charge, the strengthkw d,f 5wec;9+ znsk,t of the electric field

  Is it possible to have a zevx:is. 7r v3oero electric field value between a negative and positive charge i.7s3xre:vo v along the line joining the two charges?

  Is it possible to have a zero electric field value betw* tm ooqhb4f8*( pbs0seen two positive charges along the line joining the qs*o4hf8 t(psom *b0btwo charges?

  Electric field lines near m v: mm7tbged; /08sbtpsitive point charges

  The electric field shovp3fv+ sw 4qs6 1q-tn0wsg 6mvqs8jt.wn

  Can electric field lin2+ 40ifwlmqaz- n9o* jbe ,csces intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele f b-m, o8mzsbhpvsn 82fh 7 s/b(f*0)kwc3sfnctric field. Give a statement concerning the electric field in0fp zmn8)nb 8-3/of(s bsb,sck vswf*2 7hhm f the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacy5m*gtt61n6t-p t ohuh given the samem-ttpynt 61u th6g5*o charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table inqhh-nf0m tvg) 7(qt t2 a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the)(qh 0f2htnt - mgqv7t block's top surface?

  If a conductor is in electrostatic equilibrium near an electrid-3at roxt5sarbthau 0)i1 61c charge

  A positive point charge is enclosed inb2: qu kt st cu,g).mvmebz73; a hollow metallic sphere that is grounded. As compared to k7s zmu2qt3vm etubgb .,):;cthe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductocyj2qm3 n;m;crs in static equilibrium.

State Gauss's law.

  The charge carried by one sj4 2p jaydm))ov 37b.3zovklelectron 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 f 8g mpk601iopmore protons than electrons does tkmgp ifp10 o86his piece of plastic have?

  What is the charge on 1 kg of protons?bh,tb,q3 :crx

  An atomic nucleus has a charge of o k8.yoe-f 1v*be8wa s$+40e$. 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 chargnx*cd yuv q1 (0j-hw5 k.yudx*e values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electx(51* q ju cyux-nk dwh0y*.dvric force between them?

  A 1.0-C charge is 15 m from a seconc3rhv(qm 7;sfd charge, and the force between them is 1.0 N. What is the magnitudeqh(fv7m;r c3s of the second charge?

  Two 1.0-C charges have a forqv1 zxhs8uru+8an 9s0vl1hy ;ce between them of 1.0 N. How far apart are they?

  The force between a t )/2 ywfcopp:$30 \; mC$ 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 they e,l kos1s id )n,bc9gh)5q 2vfare moved to a new separatiqh5d,lkn ogbsfv,91e 2) )iscon of 8.0 cm, what is the electric force between them?

  Three identical point charges ivhmr.uh5x +)of 2.0 mC 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 the 100 cm markh5vu rm.+ix)h. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge e/5xfbag2l8s1 kq6 ujof +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 magnike/ u6gqfj5xa8 2lsb1tude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions:q5c+ en+um1s o Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC++msceu5n qo1 at x = 0; Q3 = -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 square, and dnw;3jkrc8+mn: zbhj/ gf2 ff8 wgk:5a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatkgwmfrdz/5j8fg+wn fh;:3kcn j2: 8bic 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 charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.3rf/skg/12lt j ; ,eneg0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nlgs/grtk1 n,eej; 2 f/et 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 =t:s.uz) vy +c:i+h/a d;v;tz yi9exup 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC/td + .itu:uz; xh9c sazvi:)eyv;py+ charge?

  Three identical charges of 3.0 mC are placed at the j xegru8rgq +d/z ).y5vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of tgrrd8 )uq+5z.yj eg/x he charges?

  Consider point charges of +Q and +4Q, which are separated by 3.k1 /8strhpqu,0 m. At what point, on a line between the two charges, would it be pou/qr8s,h tpk1ssible 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 = 4.0 m. Where oysk*i3)r f*gsm;-ynl*/ks vafv (a )pn the x-axis can a third charge be placed av(/*3 f skav*i ly)ks pfgmy*r)s;-n so the net force on it is zero?

  Charge +2q is placed at the origin and charge -s, omq :0s/ahdq is placed at x = 2a. Where can a thi,h0d o:a /msqsrd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass ob;7xhk y 9dofhn;(l4a7c y9ycf 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 gravity by the att f)ri8k ftv5jh57wpn(raction of a fixed proton some distance above it. How far above the electron5r)if( pnf5w8 vh7k tj is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncon , by;o5idf9(vy)ze rbducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apartb5;f(vz,e)9 iy oy rbd 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. Whatf3w0os7z 6jjd r j b3.z-wd39ysosu2m is the magnitude of the electric field at a distance of 1.0 m from the nucles yobfs0jr7j3j -o3w3 u.zzw2m s69ddus?

  What are the magnitude and direction thk3c f1 v7eeh ; 3s2tf8t 0eo-plt4nqof the electric field at a distance of 1.50 m from a 50.0-nC char chhq1f3k to-7ev tt2f0 4n l3;speet8ge?

  A 5.0-C charge is 10 m from a small tesf ;u: y*m5nwrxt charge. What is the magnitude of the electric fi5fyx: ;wmurn *eld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e69f,on-pjdpbp43kr6i/r-b oge 8 n qrlectric fier-pe qrg /o nj p,6o-fk63d4bbr9nip8ld?

  A 5.0-C charge is 10 m frfdig3-bp5wy 3o+d1kltwwr ,2 om a small test charge. What is the magnitude of the force experienc 5rw3 fl1kid,+g by2wto p-d3wed by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated uw vxb*ktd(p2wgie;5):w px. by a distance of 4.0 m. What is the electric field at a point midway betwep:wb epk 5ixwdwt .;v)ux(2*g en the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stix+ owyv;4 ui snin 2uuxr, f4pve,-+(yck and a -4.0 mC charge is placed at the 50 cm mark. What - wu(4 ,4xx unis+2+uvef;nv ry,ypiois the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an 65 no rb qp5tnk1:0d+m5ldeewd a -4.0 mC charge is re pt0nw5b+dk55mq lon1de: 6placed 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 are placed at x = 0 and x a4o ,m) 1pdq+ 6rgefenje:2g p= 0.20 m. What is the jmo)+ g n2g ,:rd6qapee41fepmagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges m8rskq 9k7:9, f zpdyold;dv9are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at:d97r doqy,lpfz8kvmk9 9 s;d the center of the square.

  Consider a square which is 1.0 m on a side. Charges are myp p1m1w)ad j:j8azzv* c1m3placed 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); -3.3mc 1ama*)pmp1yzwzj j1 : vd80 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 ct5z: fejc:5le harge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this ele e: tfcj:5zel5ctric field?

  A particle with a charge of 4.tag9 +re9bd*3tc j. 0-ewqy3y*wcddl 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 )6epbm/0 phf v0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for imp e/ 0)pvfbh6t to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pljt, ibq w4 oezduz- gg**,12uwaced inside a uniform electric field, and is suspended against the force of gravity.j*ei u4 z 1bz,qg2,tog w*udw- What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriesh 6+l-.d 1 usrinqld(y a charge of +2.0 mC. What is the magnitude of the electric dnhqi( u.yl-+ dlr16 sfield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whatcnshrh2z qj6dep2u ;)q 6/1qr is the electric field 6.0 cm from the center o6 zh);1qcdqrnu2/6ejs hq2p rf the sphere?