State the law of conservati,ykdr0rr3x0p on of electric charge.

  Is it possible for two negative charges to attj:aabw oqn 1 3g76b.is+ cgs(kract each other?

  Is it possible for a posioj;p-io0w g1xpf(musynf j 9r7 +01ua tive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. gmn 872 xp3gui During the process the glass rod acquiregip gx73 8um2ns a positive charge and the silk

  A proton carries a

  The model of the atom shows apa 4b2*tt2 uru

  A neutral atom alwayfi *a+qm6bl;4.z4 cj dohca9hs has

  An atom has more electrons than protonsvc lw,p4/unb 66hsdw). The atom is

  Materials in which the electrons are bound ve56qow , aomx +ivtb8s0ci6 -ja+pq.zcry tightly to the nuclei are referr5s cpboa+.j qamci8qv0itw-z6 ,x +6oed to as

  Materials in which the electrons are bound very loosely to the nuclei ,)1, pr ppfvlgp28w ojand can mog2 1pp ,f)lpjop v8w,rve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. 9 ;cu4-v1ltvs - *zw:mg zpsczThe end of the metal bar farthest from the charged ro*wzz: vsz ;-p9smt1-gcuc4 lvd will be charged

  Sphere A carries a net positiv-6es;./r w+j8-qdq :w) pl bizwsll iie charge, and sphere B is neutral. They are placed near each other onqb+;wj.6 z l qi /w)lsie:p- is-wldr8 an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelvdmq*oe-) z(l a/g+d ty?

  An originally neutral electroscope is briefly toiy-wicb 2l4 6cuched with a positively charged c6biiwc-ly24glass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a3u;tcm( qn1 ot positively charged glass rod is held near it. After the glass rod is removed, ;u 1(tnqc3tom the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. ;8gv*zw tm1sjrpj :6 u Then a negative object is brought near the electroscope, but does not touch it. What happens to th:1 gztjv;m8 wu6 *srjpe leaves?

  A large negatively charged object is placed on an insvs4nf zn+ ukv ),r(3tomk +8kyulated 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, a( kvfv+4,+nmrokz k3 yu8 )tsnnd 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 Coulofct7 ga9 ssx:t6* w4gomb constant $k$, which appears in Coulomb's law?

  Two charged objects a/xe3wfp7 nki5f+o s ro *j.rg1re separated by a distance d. The first charge is larger in magnitude than *pgf./exw jf+ko31os7 rn5i rthe second charge.

  Sphere A carries a netdx6n tvl nmk (r bl/:tg,)g-i8 charge and sphere B is neutral. They are placed near each other on an insulated t8 l,ngi6-)xmtdl/krg : bv nt(able. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a lkrfy*i) eg 5vfr(p); certain force. If the charges on both objects are doubled with no changeri 5l fvrk; fg()py)*e in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcel9)ypfw*y9. spf e *zng 7ikl:s of F on each other. If the charges are sengpw esyp*.il*9 kfz ): fl79yparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each othev 56iilrd,t9 bi1b lrw0 ofcm yf()y6)r with 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 centers is reduced to one-fourth its original v9t0dvy66) 1 oibfi(l5 ) rciwbyrf m,lalue? The force is now equal to

  An electron and a protonr9zlp;u clis4 b7uo 8v h:n2w9 are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electronn97l ol c:wiuv9bzs p4u2r8h; is placed next to the first electron?

  An electron and a proton are separated by a diwg vx +kfu7*y-0qrqz )stance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plf +qr* wuz7k-q)v0ygx aced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.y x/i -im) bgxco79n0sr-1ryt c0xwa+ What happens to tr 1i7y cba-)i+ x0xn/x c mgy0ts9-wrohe size 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 at thec3 yg((dzqdk1 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 forcg(1k q( dcy3dze acting on the positive charge at the center of the square?

  A point charge of +Q is *p0 c7o qpuxhp,:c+ydplaced at the centroid of an equilateral 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 ,h0dy+ po :cpcq up7x*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 vect0/tub :slxlx38p ypc+9k/o ator?

  At twice the distance from a pointljgrngz37 ,,k charge, the strength of the electric field

  Is it possible to have a )x/:brbuf scs;3;xwa)nf.a (:w ibdyzero electric field value between a negative and positive charge along the line joining the two :w/xa3cfrbnasw;( :) f);us xbbi.dycharges?

  Is it possible to have a zero electric field value g /*6byuai-t*s/m98juacxbh between two positive charges along the line joining the two cbu-8s/*xuh 6at b/9 jy*gmcaiharges?

  Electric field lines ne /r8kttg; slt2ar psitive point charges

  The electric field sz(e6 i-uv7uzf hown

  Can electric field lines inter0*f a5qgl ,jaydh wt54sect in free space?

  A solid block of metal in electrostatic equilibrium ef0p gtz7 :a7cis placed in a uniform electric field. Giv7g0c :e7 fpazte a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each a zhbbu-j9-1;bkauspx1 f*t9 given the same charge, the electric field (E)kb *fzp;a9-ts hau1bxbj 1u-9 midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniforsm:+:.*2lx ix lqpkaqm elecl.+l*p:: mq2xs kxiaqtric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric wpcn99 y6h c 27xod+iqcharge

  A positive point charge is enclosed in a hollow metallic sppz5or2.h*x bbnln(1v here that is grounded. As compared to the case wz nbr*ph xn(2vb5o .1lithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in *dr .zj pj) .ntzmv;+yvn:co+static equilibrium.

State Gauss's law.

  The charge carried bym+u.gce4 ol-kg 6jdfql f8.j os;el94 one 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 has a net charge qb nyz4zbr*-g(36v qfof +2.00 mC. How many more protons than electrons does this piece of plastg v zn*q4rzfby(qb -36ic have?

  What is the charge on 1 kg of 0o(d ju4 rmpxps5 brr*5fuw8:protons?

  An atomic nucleus has a c2x9w6d c fke0charge 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, have charge values t7o/t4o d u/a4ac8y:cmnoa9ik2 xl/tof 2.0 and -4.0 mC, respectively7/k td o/ato o2xi: a8tnu/9c y4lca4m. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargeyi*k b4/o jxyu2pieh /k6c.8n, and the force between them is 1.0 N. What is the maghkcyi2u6x/*/n byi opej4 k 8.nitude of the second charge?

  Two 1.0-C charges have a force between them of 1zqk :i,nof35n k/oo+sx5 c p,j.0 N. How far apart are they?

  The force between a i 7l0csreq/au9q6ae *ws :f *a$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm 5sc;80rcxul:l+ygv o apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what il:l8cs y+rg 0;vc x5uos the electric force between them?

  Three identical poin-sl*m+ jr 2 b-tcun6vvt charges 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 mark. What are the cj -+2r*t-v6 bmvulns 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 placedabdnojs/vflyo26, 3 )d:y.x : 2 ldfgd 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 ths.goo ,n y dd:2j yfx2 )da63/:vfbdlle magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following pov3a5lz;di llo4mk( m*sitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = dm54vl ko ;azm(*il3l-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 a second poib3 kc1ifslw 5mv+ulzqn/g 22 fjj: 1i9nt 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. Whatj3fn / lcwui1 kjgf:9zl+s21 2 im5bqv 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 aty vy/nca;g9 l+wr .ei5* nrhz7 (0, 0). What is the magnitude of the n z ea.yrlv*;n 5+hrny c7wi9g/et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (01hqsiuz 1*r5)n 1x s -ggurn(x.30 m, 0); 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 force on the 5.0 nC chars1*hgqin1-1)ng( srx x ur5zuge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral tgyk080m u pauh.g o m6zdre259riangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chary9do0zu kuh56 .meam p2r g0g8ges?

  Consider point charges of +Q and +4Q, which are gbjhkzo4 hmxy/+y 33j1tgh (/separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a xk3(/h 1tmoj h/y+3z h4gbjgycharge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the oriwvcb;h703 7u9zk3b ro k ql*bkgin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so vzbkkwl3 h 37r*c7;b q9kubo0 the net force on it is zero?

  Charge +2q is placed at the origin and charge -q islp(. mv )yg6q)vj 5msk placed at x = 2a. Where can a thir 6vs) p)(lq5ykv.mj mgd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.b.05xh xf)va j.vea 4f 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 tj8dgk:. rc a34gn 3upuhe force of gravity by the attraction of a fixed proton some distance above it. Ha8kc un.p4: g3du 3grjow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc0whk / 7r*.yrwuhzdf3zdb7/mting threads which are 30 cm lok/w r*7zfwh h u.zdd/7y r0b3mng. Both are 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 magnitude of thdnja v6o 408 9so5-9kwomhxmv e electric field at d86590hsn4-wa9 kv x o vmomjoa distance of 1.0 m from the nucleus?

  What are the magnitude and direc/ ik)et)gqutw02*.xse: rn sktion of the electric field at a distance of 1.50 m from * 2s is.:kxwnqekg)t e 0)tr/ua 50.0-nC charge?

  A 5.0-C charge is 10 m fromq47s, xr2ekrt -6 xbze a small test charge. What is the magnitude of the electric field at thkt e76s-eq2 xrb 4zxr,e location of the test charge?

  A 5.0-C charge is 10 m from a (1d ygvffy+s) d6/ mu+my3h(ge 2xeppsmall test charge. What is the direction of the electrdymp1 (guh+xy/veg d2fm+y sf36p) (eic field?

  A 5.0-C charge is 10 m from a small test charge. v6 aj2e n(y6wdWhat is the magnitude of the force experienced by d2j a(wy6n6ve a 1.0 nC charge placed at the location of the test charge?

  Two point charges each ha-w n6n0bm 70g8 xzwuauve a value of 3.0 C and are separated by a distance of 4.6 0m7-ngwu0xbz auw 8n0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the ltc yf)r: /p0c0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm ma/cpc tl f)r0:yrk?

  A 5.0-mC charge is placed at the 0 cm mark of a mete9rqc.ivu9 e954j t ijx5os 6fdr stick and a -4.0 mC charge is placed at the 50 cm mark. At w5xtfje i q4rdc9.v6sui5j o99hat point on a line joining the two charges is the electric field zero?

  Two point charges of fy+9h:7ahrokb k )lt3x)m b5c +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What iht)3 bl7mx5afc:h + b)ky9orks the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the threnminb7muf;zq+j tk :pd.29 f 8e corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chabt f;f 2dim+jnp89q7kzm. : nurge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side.t9 s2eimf;)y ;xk:vz q5fz f1p2ip,y g 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 ( f xzg2m;2yt1s)pz, fe9k5q;yipfi : v0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is ns ,3;*u; vcr6nsey jfplaced in a uniform electric field. What is t;nyuj6rncs s f3e, v*;he magnitude of this electric field?

  A particle with a charge of 4.0 mC has a masszb3xc4suz;+s2f vzq. 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 of 600o3jk f6ed1ls4iqn *2 i)u mr5x0 N/C pointing downward. What charge mr )4skqm* 3x 561euoi2fljidnust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 gvgu;6.z - ,7y6(xvcozyst xnv carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnvxugcy 76.-v ns6y(zvtx,;ozitude and direction of the electric field?

  A metal sphere of radius 10 cm carf9 jhsqf9 9 v7lb,:nanries a charge of +2.0 mC. What is the magnitude of thev js,:n9hl 9 9fanbqf7 electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ela.n vlij*/:b sectric field 6.0 cm from the center of ths/b a ivnlj.*:e sphere?