State the law of con 3cu8og;yp6 :raqvzv 3servation of electric charge.

  Is it possible for two negative chargl(7ip+ad bt;chuld )(es to attract each other?

  Is it possible for a positive and a negative charge to attract each4m x.giwe7b t9-p6af f other?

  A glass rod is rubbed with a piece of silk. During the process thkw 2oxnoeciy ).3ys0f(oz*c /e glass rod acquires a positive charge aycs o2okw3)0xyn/ec.( * ozifnd the silk

  A proton carries a

  The model of the atom shoy) j3j2dj lk,pokv*f4ws a

  A neutral atom always has+z6 nu6exx,bjqdy-8 g

  An atom has more electrons than protoncp-(g+ty x v:pq/htj 6s. The atom is

  Materials in which the electrons are bound very z at3-o u478 +u+ +yu +wygwvm,reaj28okapjttightly to the nuclei are referred 42r,+gta otu+ jkwmv8zu3-jo pwaa++y7 yeu8to as

  Materials in which the electrons are bound very loosely to the nucl*/gmzwe.fnn03 iovt ao4q-2rei and can move about freely within the iavzof* oemg- n43.w2n/0tqr material are referred to as

  A negatively charged rod is brought near one end of anmip) ca+ah 4 i4ndr 7il /+xkt2jdi(+p uncharged metal bar. The end of the metal bar farthest f (jn d)a iac+2il/ir+dkx4+ 7 tpmhp4irom the charged rod will be charged

  Sphere A carries a net posit:)tvwfo+p n4 wive charge, and sphere B is neutral. They are placed near each other on an insulated wwv4:+po )ntftable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope s*c ee79mhpjc+bo.: m positively?

  An originally neutral electroscope is briefly touched with dx9s lwqnmti.3rd)x i:cd-q+tug +/)a positively charged glass rod. The electr+is gr3 mc)9ti/qd)+dq u ndw-xx.:tloscope

  An originally neutral electroscope is grounded brie/zk mg7mh,qt 4 h9xe9lfly while a positively charged glass rod is held near it. After the glass rod is remk7,mmz 94x/q lhegth9oved, the electroscope

  A positive object touches a neutral electroscope, anpk;msr+ 3jv 5ad the leaves separate. Then a negative object is ms5;jk v 3a+prbrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charg kcs:-0ba39 wy7rj6y n3rlrmj ed object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops b r m70jcw-6r3l9:rb3nyyk sjaefore 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 the Coue-oquj w 84iwo-*,2gt3dbxaz lomb constant $k$, which appears in Coulomb's law?

  Two charged objects m5yu 6 u:vf bqvzde:ex, b-5e:are separated by a distance d. The first charge is larger in magnitude than the second c ufbz 6u-x::5vqveme e:5b dy,harge.

  Sphere A carries a net charge and sphere B is neutral. They av3ktz1y4 lv)hn)a ( k cq 2f7gi7ckeq6re placed near each other on an insulated table. Which statement best describes thezg 1h7(7 6v))kc a3lc2kfetyqvk4qni electrostatic force between them?

  Two charged objects a2ur(k v e5 l4qypw://gy (b;d cnhmzh0ttract each other with a certain force. If the charges on both objects are: zln;bmy(eqwdcv hk02hgr p(u5/y4/ doubled with no change in separation, the force between them

  Two charges are separated by a qef)mi +ah1c9distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forc9+1 hf maqc)iees?

  Two charged objects attract each other wi9dw8p ylvaw k z3-+oll-(ij .wth 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 centersvj3k .p z-al w+( wdyoi98wll- is reduced to one-fourth its original value? The force is now equal to

  An electron and a protonjsr0bf-7 vv of+ k8/df are separated by a distance of 1.0 m. What happens to the magnitude of the force on vfj+fsv-b/fdk07o r8the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to*-- fp6q .clhqxi s2le 5ttm.jkd6ui: the magnitude of the force on tupt-5l x2q-6edit. c*hflq6sjm.i k:he first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a d g +qrox)pd;wr1isn+2yw q-a. istance of 1.0 m. What happens to the size of the force on the proton if the electron is moved ++; apqxgwisy1or2r-. wdnq) 0.50 m closer to the proton?

  A point charge of +Q is swt)oz 9 wwpx577iz q)placed at 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 acxq tz)ps) ww7 i95wzo7ts 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 equilemblk:,r ,c v4ateral 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 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 v: rmcel4,b,kvertices?

  Which of the following is nolclni2t y tr:ml3 ;q4,t a vector?

  At twice the distance from a point charge, the strength of the electr , )mtgy3f7n) mxogjm17hlb hcu)wz.:ic field

  Is it possible to have a zero electric field va*2el0 z/09nrnhm bqwk lue between a negative and positive c9b*m 0q20lh rzk/nw enharge along the line joining the two charges?

  Is it possible to have a zero electric fijkh; cf bcq61.eld value between two positive charges alojc.kc fbq6 h1;ng the line joining the two charges?

  Electric field lines near psitive poini( fq*ny :gytw+einp8z h503bt charges

  The electric field sho*sbhz/bm2.fy s.frx6 wn

  Can electric field lines intersect in free skpf5 ax8n97 clpace?

  A solid block of metq5tir0 me,9dy (ygi+d al in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's iny0e rdq(it9dmig,y5+ terior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi1,(d 7ujj4lctun8 uxn ven the same charge, the electric field (E) miuu j8cd lju(xn nt741,dway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in ok7jbqge-:d - a region where a uniform electric field is directed straight up -objqd7-:e kgward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electugg 2ka.g8j - ux4yfh2rostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundpqgn6vz w8/3bz y 8fx(ed. As compared to the case withgq3pf n vz/xz88 y(b6wout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of coy ba28spnu1 a94qs 6xsnductors in static equilibrium.

State Gauss's law.

  The charge carried by on )n7q9ao ,lebr1;ihd me electron 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 hasc4jbkjpwqv61fgs)/ .*mvsdn o ye + r3zw31s3 a net charge of +2.00 mC. How many more protons than electrons does this piece of pls.w*/j zcr espy4djqvk3g n )3vf1+wb61mo3sastic have?

  What is the charge on 1u:eztwy sw;4-q 25x jn kg of protons?

  An atomic nucleus has a charge pig qh2i+x tiw2m x3)5z9u-w 9u+okrsof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, hav)x/w,;qeprp2y8 h ab ffw vc3.e charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcepp.;q 8cf2ww )b/e ah3rfxy v, between them?

  A 1.0-C charge is 15 m from a seco-)o3 hm( jswo, m. x1sof*zak c77ubiend charge, and the force between them is 1.0 N. What is the magnitude of the seconxsm1ia (-3 ,*7 hemswuo7f)z j.ko cobd charge?

  Two 1.0-C charges have a force between them of 1.rmxp3z0ts-er )i+weksj2 2 r8 0 N. How far apart are they?

  The force between a d; y7 qi .;cm/intd.md$30 \; mC$ 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 for*gki*o-che5v ce. If they are move - hk*o5c*eigvd to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first (rqk50q2 d jpzcharge is at the origin, the second to the right at x = 50 cm, and the third is at the 2p q(q 0dj5rkz100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges alc; pnaxq.8qb: a +4;5ytqbjg re placed 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 c5qpg8alxybjn a;:t 4;qq.+c bm, 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 followinmko1*ktp5i x (g 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 on the 3.00-mCkik*m1 (5poxt charge?

  A point charge of +Q is placed at the center of a s: noco ;yrotxwv67:cp26 s us2quare, and a second point charge of -Q is placed at the upper-left corner. It is observed tsotupco nr 62vcs6:7:yow;2xhat 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 charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC if6ryk0c1 hns4a /ma4 ts at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the t46amacr40/sfh1 ny k5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);jf2n3 xiyou4o+ r(a (n Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.02 r3fxiu(jno(a+n4 o y nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equil:4f;edf2gt)q1q eq imateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on an :f2q )ife;dqt4q1ge my one of the charges?

  Consider point charges of +Q :,smvk( al6hland +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to p:(svl6lm ha,klace a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the oleq4cpt ufr q/06vbq58re-: brigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axi6vq-8 5qfb:p4l/u 0rtb eecqrs can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q if50u nv(rt+14nh h jzis placed at x = 2a. Where can a third positive charge +4+ nj iztrh1h50fnu (vq be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Apkiz0d5 t,cd4jc vg0 , 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 .fq 93dlrd y(gup against the force of gravity by the attraction of a fixed proton some distance abo(dg9.ql y dfr3ve it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comm +;,*ua1jm)vldqab neon point by nonconducting threads which are 30 cm long. Both are given identic anabj l um)dq;ve*1+,al 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 char;j hoe /jl8 k)qi- x2:jale7arge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nao 7;ja -qe:8jxe)rhjl/l i k2ucleus?

  What are the magnitude and direction of the electric field at a distb eawte d*8:xx8se,p ,ance of 1.50 m from a 5d psx *8tb,aw ,:e8exe0.0-nC charge?

  A 5.0-C charge is 10 d(c/1xj38nb 2ebxdxa m from a small test charge. What is the magnitude of the electric fie3xxb nx 1ad(cb82j/e dld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chabs1n5y,d ngn jy 8yy8fu 27wy9rge. What is the direction of the electric fie1gj889n52 yy ywnyun,dsybf 7 ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofz 33mfewae8)r the force experienced bze3e8war3 fm )y 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 b 8oc sc364y4auxg pq1ny a distance of 4.0 m. What is the electric field at a point midway between the two char3g4nauc q8o6cs4x1py ges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg8i86f (ul: giyezn fm5xt g8u1qer;-ve is placed at the 50 cm mark. What is the electric field at the 30 cm ma nl(8y:frx;gi f56mizu18 -e u tq8vgerk?

  A 5.0-mC charge is placed at thqmsw5rwxj*7ig) du1ef11 u- t vb(3vpe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. *sqxj7(v tu eb 31 p1ur1wwf -)iv5dgmAt 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 u(olw 56hz5lqev+ wn0= 0.20 m. What is the magnitude of the electric field at the point m5z oqhnl6we +l(w5vu0idway between them?

  Three 3.0 mC charges are at the tl- *foleqv*b1v3n:vk hree corners of a square of side 0.50 m. The last corner is occupied vbelv-f* : qn1v3lok*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 ;,mq9kpgm o/1c8djakat the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, m 9qkcp/;,k8mo d1gja0); -3.0 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 42p6ytlthy4t charge of 5.0 mC when it is placed in a uniform electric fielly4t2p4t yt h6d. What is the magnitude of this electric field?

  A particle with a charge of 4.0d1qz7um1*y4m5 ib.ij*- mfc2 kxxyhz. kwm- u 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 mased* x1eh34mc/rry is4 s 0.120 g is placed in an electric field of 6000 N/C pointing dorh c ex 31ds4m4i/ey*rwnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a hg,o 6etp5ip8wg5s* gcharge of -2.00 nC. The ball is placed inside a uniforme h p8,i5s 5*o6wgtggp 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 ch4pmu4 y 4owe:;.u kxrizt;uz5arge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sw xyorp4.u zuu4z ;:t;4mi e5kurface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elecpey 7up)dny2dz(x t8,o vul)8tric field 6.0 cm from the center of the sphere y,)(y xupode)2p7v8nl8tudz ?