State the law of conservation of electric 7zeco8a lm 9c8 h)s3shvqkg(,charge.

  Is it possible for two negative chipibq5wb 0.6j arges to attract each other?

  Is it possible for a positive and a7,ueou yv7e c3 negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process np+i5x9yr*o0 f ,6ti fj:j tipthe glass rod acquires a positive charge and i p:j+6i fj nryx5f0o*,i9pt tthe silk

  A proton carries a

  The model of the atom shows w74wlrh/ mhc)9, axvza

  A neutral atom always hap .w0 za;rp:t0c kcga.s

  An atom has more electrons than protons. The atom 1ry7 )mjol,uv-3jttkis

  Materials in which the electrons are bound very tightly se 1a(t, t(dfcto the nuclei are referred to as,( 1fat c(dets

  Materials in which the electrons are bound very loosely to the nuclei and can,w ywf/go4*og;d bg+i(oeb: o movey b+g4f* o: oow;wbdei,/(gog about freely within the material are referred to as

  A negatively charged rod is brought nquuo:mpkgihr2 vzk 38.v *m-4ear one end of an uncharged metal bar. The end of the metal bar farthesmk*vg.q-vzr3 h4uui:km8p o 2t from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere Bnn-bci jvtym- m3py;9;n)o6t is neutral. They are placed near each other on an insulated itb9n;t6mcy 3 n)n j-vyop -;mtable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargfsyk-.*i;el. t 7tv lee an electroscope positively?

  An originally neutral electroscope is briefly touched with a pz 4.8sobnk1gd7 hj- tjositively charged glass rod. The electroscoz d s4 o1nj.-jh7tgkb8pe

  An originally neutral electroscope is grounded briefly while a positively waxp9; .7 wchbk-:kd xcharged glass rod is held near it. After the glass ropx-9dxcw:ahbk ;7kw. d is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. The/:gj 6en) gwdpo eb*k0n a negative object is brought near the electroscopeewj/d)b :g0n6* gkeop, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatezddq,2bw5om:- 7dqzfd 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 objec2b:7dq o q-,5mdwzzdf t. 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 Cr*pt4.8gp fw0) vki jzoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a qqz c7(zqt ,f(distance d. The first charge is larger in magnitude tha7f (zq,zqq tc(n the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed n xt/c)raq(w2 gear each other on an insulated table. Which statement best describes the ele )gxc (/tqwra2ctrostatic force between them?

  Two charged objects au4ff-x8b frd ;x i-:*za pq:zyttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betf8-x:ady -f4 uzq;xp fr:b i*zween them

  Two charges are separated by a distance d and exert mutual attractive forces ofu56nf-i5/8r1di u.tdjbfli a a 1 6dnrj /ti-iufdiubf5l58.F on each other. 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 haptmh47 7 ncy(bppens 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? The forp nm4bt7 cy7(hce is now equal to

  An electron and a proton are separated by a distance of 1v/, ak*g 3r beymv4h:b.0 m. What happens to the magnitude of the force on t3 eham/v g4 bb*v,r:kyhe proton if a second electron is placed next to the first electron?

  An electron and a proton are sepa j/b,yl7s-vgc/v d uu7rated by a distance of 1.0 m. What happens to the magnitude of the force on the first electj7ulv vs/bygc 7,-ud/ron if a second electron is placed next to the proton?

  An electron and a proxcq(. zh-av:, x jd)ue/eru0d ton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the e0c- u/):aj urdxzx(d h, q.evelectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center qmm6-nh) z *o0ymfz 1kof 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 charqh1oy-*m0)km 6zfnz mge 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 cen7-.f tjqk6u3 mbc pqh)troid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vehqpf73. u qb-cktj )m6rtices, 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 vectmej2qxbi *j8en.f 87dor?

  At twice the distance froeiyq8l5c4:vvu 2 tm4im a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a d .rdgifgv+n1.c5ss-(vflg/negative and positive charge along the line joining the two cgd+-rgvf..ln sv1cfg s i d/5(harges?

  Is it possible to have a zero electric field value bed47l)nyucs 56ui wx q3tween two positive charges along the s5u 7y 4lxuq3din6)w cline joining the two charges?

  Electric field lines near psitive point chargesp626j( :akwavaqory ,

  The electric field shown -lvjd f5n2-1rdf8g.5(- qhgkhwo c da

  Can electric field lines inzkzx hnel7o4h8)e-1 40 nztqhxu y1,ltersect in free space?

  A solid block of metal in electrostatic equilibrium is pla i7gf2ak2*nqx ced in a uniform electric field. Give a statement concerning the electric field in the block's interioi2gq *anx2k7f r.

  If a solid metal sphere and a hollow metal sphere4.s7n : fel skuj2qds: of equal diameters are each given the same charge, the electric field (E) midway be .:ss7q4f2dju lke: sntween the center and the surface is

  A cubic block of aluminum rests on a wooden tba2:x;frna 4xk4p 8 yaable in a region where a uniform electric field is directed straight upward. What can be s: raxnxap2 f44k8b;ayaid concerning the charge on the block's top surface?

  If a conductor is in electr3jqzlli 4xx2 dyw3b5 5ostatic equilibrium near an electric charge

  A positive point charge is enc ndh 777k3w ek9;-qjb.jfbtkglosed in a hollow metallic sphere that is grounded. As compared to the case witb- dw.j77q7btk9k;ghk je3n f hout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium:)yg i-6 qwxhn7jjs j6.

State Gauss's law.

  The charge carried by one electron is h fdte4 7:,e79tsl+ts( ftojl $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of 69tw.omj )li e)+ykdoza:l 7z+2.00 mC. How many more protons than electrons does this piece of plastajm)t6 ).l z7iod+w:elkz9oy ic have?

  What is the charge on 1 kg;;jumj 2w .z; wqouhss,55,gk x5fdgq of protons?

  An atomic nucleus hasuk7:vlwgqq*zu2 -4aw a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, h68jnexs yk 3e5 qq;y/dave charge values of 2.0 and -4.0 mC, respectively. What is the magnituy;3 yq5ns86exkeqd/j de of the electric force between them?

  A 1.0-C charge is 15 m from a s6rt kc */ zxrgsrebz20fpm/-4econd charge, and the force between them is 1.0 N. What is the magnitude of the second chbpcf- e2zsm0zrt4k/ x*/ rrg 6arge?

  Two 1.0-C charges have a force between,kplzbwe8n3wik vycc.zbj ;a4 + 63 j. them of 1.0 N. How far apart are they?

  The force between a ysk*/ aw( cu 8 eghr)h,klcp,3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencexm0r6 f/iwgspx ; 6(bp a 1.0-N force. If they are moved to a new separat6 x;s p(g0pf /ribxm6wion 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 chab)63 iz5z+2fu *cky wjbjqj)frge is at the origin, thej)jb wb j3z*)qz5k2+ffiu6 cy 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 on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is + f,oj8vs prl1h eqff.0qwb9)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 force which acts on thjhf bq +e w.f8lf)9qp o1s,0rve charge at the origin?

  Three point charges are located at the following positions: f vrr+9u; ra+ iwet1 kl89iyo/Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1y9uei 9ov/wlf1r;a+irr +t k8.00 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, wex(23ob62kw xs nm y6wv)w- qnp/iu /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 the center charge if a third charge of -Q is placed at th(y2iwxx-os n3uv6) /wqmw 2ek/w n pb6e lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0. i jtzp7o 3hdi7v)3:my10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thyd :pm3)oz jh7i3vit7e net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0v) wl6bs/ eul;); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net );el6slu /wvb force on the 5.0 nC charge?

  Three identical charges)q ss -q heqem1f918lq of 3.0 mC are placed at the vertices of an equilateral triangless)qq9 1qq8-fhle1 em which measures 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, which are ((jgngx2 msd a- n+* +zytsxl0separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrgsxyg+z (nl2m*xt(j nad0 s -+ostatic 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 -rhzzl -fu n::m. Where on the x-axis can a third charge be placed so the net f : -zu-ln:rfhzorce on it is zero?

  Charge +2q is placed at the origin and charge -q is d9-u cc4yhzrb3-bk( splaced at x = 2a. Where can a third 3bz b ck4-sdhcr-y9(upositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota+n +0dki3i rz3u1an.ucitl hp(z+( vbl 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 t6tjzd9y3c 7l/przbj; he force of gravity by the attraction of a fixed proton some djjy3;zb /zpld7cr 96 tistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by 6ikw:p*1nhdc nonconducting threads which are 30 cm long. Both aren kcd*wh:6i1p given 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 charge of +40e. What is the msaih3om;tmn 7y0* ,i)jlw4t iagnitude of the electric field at a dy m*i j4nmat;io ti7)h0w3ls,istance of 1.0 m from the nucleus?

  What are the magnitude and directionn,u*tkw*-/ f(k 9v*hd 2vtv6odojxym of the electric field at a distance of 1.50 m from a 2d* * ,oyt9u*vkvt (x/knvodh fwj6m-50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. W6s+ bfu8v i zpz8r3nzqsn ow5.:4 n(7kzk zdh,hat is the magnitude of the electric field at the location of the 6i3s pkzzfvuwnz z8h,58(+k :no .dqrn7zs4btest charge?

  A 5.0-C charge is 10 m from a small tebz- 8vb, e,ggjst charge. What is the direction of the eleb -ejzg8vgb ,,ctric field?

  A 5.0-C charge is 10 m from a small test chargev ;x dkb20oaos42 tzt2a8be5 z. What is the magnitude of the force experienced by a 1.0 nC charge placed t2z5axbek vz8a4 sdb ;ot2o02 at the location of the test charge?

  Two point charges each ha 35/(j *sg cgbvbd-qvzs l q;s2fvfe,7ve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between thejb2qvs7*/zq ,e c dbvs (;g3fslv f-g5 two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m8. rhdbpcv4wo6 aawh89, /kczC charge is plka/c8baz prc9ho4h 6, w8d.vw aced at the 50 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 and lr;74hfdkk/7cbbgn ; qs:sl3 a -4.0 mC charge is placed at the 50 cm mark. At w kg;ds; /3bqb lrl7f hn7:skc4hat 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 pdcpv l1.zgvbys( uu+9s9(0g vlaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between tsuyg0vl.+u g(19vszv 9 p c(bdhem?

  Three 3.0 mC charges are at the three corners of a squtaf- h l5;03z w 53jslfa5lpelare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. f- es30 zjaw5hat 5lll5l3pf; Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Cha8 :r*e4ahgusvrges are placed at the corners ofs hre:*ag4 uv8 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 square's center?

  A force of 10 N acts on a charge of 5.zx9.-bz+i.ylxdyx1 qrb-l4m 0 mC when it is placed in a uniform electric field. What is the magnitude of this electric field?l-.z9xqb d4izl 1 m+b-.r xyxy

  A particle with a charge of 4.0 mC h; lor5sv z(e t9v//pauas 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 oebcg;u g3;ztv+ydi9 o4jns95 i )eqc0f 6000 N/C pointing downward. What charge must be placed on +vntc 4gd9 5)o;i yz;b 3segcuj 09ieqthe ball for it to be suspended?

  A foam ball of mass 0.150 g carriw ym,0nc oxgxj76ct: 6es a charge of -2.00 nC. The ball is placed inside a uniform exjct:y, n0 6gocwxm67 lectric 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 may 3a haa ddui-b9 ,7mnvxlmf.q0f0;v7 gnitude of the electric field 5.0qu 0n hi, 9v7d dybamvm 3lfx7;a-.af0 cm from the sphere's surface?

  A metal sphere of radius hp-6a eppn a412.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 e- 1anp4hp6a pcm from the center of the sphere?