State the law of conservation of electric charg: bzpxee0wii1tb) o c3+5aldx8p r*,we.

  Is it possible for two negative charges to attract each othe82 -zo7khpthdq 8lc4eo y1 gd(r?

  Is it possible for a positive pon9vg/ :kn4h and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proc 5+c+b/*jpq+iom yx6de .w2zk wpul1gess the glass rod acquj ky u+5. imzgbew6/ wpo+*2qpc dx1l+ires a positive charge and the silk

  A proton carries a

  The model of the atoms0 mn l0hkx**v shows a

  A neutral atom always ha*c1smrngssq 7740 ek6 w y6d/t3xtgedg kp84ds

  An atom has more electrons than protons. The ato 40p,3 ptoru65mugdz)w9dqwe m is

  Materials in which the electrons are bound vr,mg kd:,d* qlery tightly to the nuclei are referred lg, dm,: *rkdqto as

  Materials in which the electrons are bound very loosely 3jav 6y 0zcbz3to the nuclei and can move about freely wiyb3 a630 zvcjzthin the material are referred to as

  A negatively charged rod is brought near one end of an unck (zu 9-;pd+qfkaxxd(harged metal bar. The end of thd+k uxkx;pad-( (q9z fe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge,r*bq 2)r6jik z and sphere B is neutral. They are placed near each other on an insulatedrj 2) 6ikr*qbz table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopnkq(i2h.sft 0e positively?

  An originally neutral electroscope is briefly touched with a positively charged qad9vlk9t *2k.qoc, sglass rod. The ek.9*9d,ltcs2q vko qa lectroscope

  An originally neutral electroscope is grounded briefly wnglmt-i )(+k)ju jnweo : d82jhile a positively charged tgiuolnjw j2-n8(k)j emd+) : glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope qn9bwcq /0dzu1vs4j 0, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whazw 4 c0vj/0s19dubq qnt happens to the leaves?

  A large negatively charged object is pie c2b-7e p4:9hc hawhlaced on an insulated table. A neutral metalliwcph-a4ehec:97 h 2b ic 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 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 constant e kl9k,z00bws$k$, which appears in Coulomb's law?

  Two charged objects ar.t5r9-m vyiqxb4y 1tan4tar+ ,.ey fx e separated by a distance d. The first charge is larger in magnitude than the second 9at 4f ,.r.q v-eyrtxxa+yy i51mntb4charge.

  Sphere A carries a net charge and sphere B is neutrpqr h5 :+o9 zwyknv+1sal. They are placed near each other q:kr9 yvnoz++pw1 5hson an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If ttseeo76 8w.20qkg3u l kvd +rthe charges on both objects are doubled wt .qe6uvrle2d ok7 tg3 s8k0w+ith no change in separation, the force between them

  Two charges are separated by a distance d andj) 8vtyk0:j dq exert mutual attractive forces of F on each other. If thedv8jq0:t) jky charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcewu(3ixb)9 jr m1 hdpj.7advzu:w. 0qp 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 value? The force is now equal tw. p7j.)zp1q3m(iajurdvuw:x db9h 0o

  An electron and a proton are separated by a distance of 1.0 m. What happer 4)t8cixc 7f8d0gea pqop(7ipv5 l/e ns to the magnitude of the force on the proton if a secondc0gf ixpet578e 7q p(arod)4/l 8cpvi electron is placed next to the first electron?

  An electron and a proton are ss8 lzg7i3+4wihnbdu7kh+ f g3 eparated by a distance of 1.0 m. What happens to the magnitude of theudb+ flzgs7nih7h83 gi3kw4+ force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepa 3 55bj.cf 6ekg w6r+gijo+-,obl)lq3 wgezfurated by a distance of 1.0 m. What happens to the size of the force on the prl3qioz56f,ej r3 o+kj5 )g-gfw. c6gb+ub elw oton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at thduv:m+4ig/9 hkwy7 yr e 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 posyrg :4udkvh9 wyi7/m +itive 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 equilateral tcsz 92e s2hk3uriangle. 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 ozc92su2sek 3h ther vertices?

  Which of the followingt sg/an.7ak2x6u +o*bkijnl1 is not a vector?

  At twice the distance from a point charge, the strength of t4qe1bdzx*+xf *tu.v ahe electric field

  Is it possible to have a zero electric field value between a negativetpe ld:*5ea8l and positive chare lt*58l aepd:ge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charges c7jzo cvfwo ;a- f1nim(:lb(8along the line joining the two chargen f v 7b cl(o-azim:(fc8j;wo1s?

  Electric field lines near psitive point chal7z a by5/q jih)ky54orges

  The electric field sho 1f2 1iugoz6.6h .ynq9friybawn

  Can electric field lines50 8lcemjrv (k intersect in free space?

  A solid block of metal in electrostatic equilibrium is 1i3ip8.bj nf esbs-k1 placed in a uniform electric field. Give a statement concerning thp-s1bsinj3 .1i k f8ebe electric field in the block's interior.

  If a solid metal sphere and a holloykdaq vmw ,o3 6wn+*b/ surp77w metal sphere of equal diameters are each given the same charge, the electric field (E) midway bet 7mwa/*,on+3dwusrp bk6v qy7 ween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unif4s9g/ x0 so*yunjcs r7orm electric field is yrug0 ns4j9 *7 cxsso/directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium axkj403gn;b y near an electric charge

  A positive point charge is enclosed i8 (; nl,lhl8bbeqsz2g n a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abosen,zl q;h gb8ll8b2 (ve the hollow sphere has

State three properties of cvl4 c-* ,:epgjefy9 ysonductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron /+a4vtq* oi d+,mw/uq fpi v/ris $e = -1.6 \times 10^{-19} \; C$. 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 more p u2 dyd;4kf/prrotons than electrons does this pifp ud k2yd;/4rece of plastic have?

  What is the charge on 1 kge*.kqh 6( +znokf xz7zlzt9u; of protons?

  An atomic nucleus has a charg8dby(hu) 0w8.rn*ou o yyr6kje 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 cmszptz k0b3**h 4me5kw, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of 4*0 hpet5 zwsk3 mk*zbthe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them yp..1p eho+ cnis 1.0 N. What is the magnitude o.. pehyp1+ nocf the second charge?

  Two 1.0-C charges have a force between them of 1.on 4i9t/g) a.w)q3p0c2(vt5au guel o* r brki0 N. How far apart are they?

  The force between a 8 yds0pjv6*v 1pdk)t cwzd6l($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience8*-m. y8pvk qxodjqf,* fqp *s a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric8,.q vkx- m*fj pqpyo*d*sq8f force between them?

  Three identical point charges of )43 o0o5uk)p )urd6sf kd24j sp rmbhi2.0 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 h 0 4prs)2 )5kikm6)ddop4jr 3ubusf o100 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 ij c5 lcgv;eyhl;cz4 k3i-ds 0*s placed at the origin, -2.0 m C toi 3kglzh5; 4; lv*c0 csedcyj- 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 the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at pf01wt zh(tw,x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of0,tw1pzt(f hw the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centerc.qjs;6 j 9uwg of a square, 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 qgwcs;9u. 6jj 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);p 08y usm0e(/dtrwldjh h o0g(5* qz1vvry/)t Q3 = 5.0 nC is at (0, 0). What is the magnitudey*q(vsp/r(hvzoy m e0j)t8g0 150 rtdh /wl du of the net 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 = 5.0 nC is atq 2ahh d ;jh1+q-ykm,n (0, 0). What is the direction of the 2q nd,h+mj q-;h h1akynet force on the 5.0 nC charge?

  Three identical charges of le25* ( s;(;fusvxph yelyw;z3.0 mC are placed at the vertices 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 the cszfy;;pv wl2* l(h 5y; sue(exharges?

  Consider point charges of +Q and +4Q,j7qmktp+a/1 ceb-e:3huhy ab3f* r g/ which are separated 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 eleqae r7gm+b*b3af-k3e1/ t/ u: hyhjc pctrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge -co d epb rbumq(3 fo-7;)qi)qis at x = 4.0 m. Where on the x-axis can a third charge buqbref iboq7qd) -)- cpom (;3e placed so the net force on it is zero?

  Charge +2q is placed at thej3ppznj; 4c7v origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed j;4p3 nv7 jczpso that the force on it is zero?

  A copper penny has a mass of -8kxh;p;kpz a 91m)cfzc kof0 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 bqjw 4 g8(jlnvj;g30letk/fy0zwn ,0raction of a fixed proton some distance above it. How far above the electron is the protofjgjw(n/ 4;08lv30z,0lwq gb kynt ejn?

  Two 0.20-g metal spheres are hung from a common poirn8m58b h0el *ekw+i nnt by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion m 8k80 bln+ewi 5rn*ehforces 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 *yn7ypsf)-9 t9m85pxpmr sqc is the magnitude of the electric field at a distance of 1.0 m from the p fx y5r-sp s*cn)py9m98q7tmnucleus?

  What are the magnitude and direction of the electric field at a di- ;6lo9fl*i29 bqdfnk pf,mhestance of 1.50 m fromq*-mp9 ,fdik ;6ho2l 9ebnff l a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e:9 cmnbg-q8x mo*n5 ,k2dkf)su9,*eq pkcm wtlectric field at the location of the tesqpb mk u n ed5c2ox):w ,,-fm*9gkqmn 9tk*s8ct charge?

  A 5.0-C charge is 10s/dt/zo7sku9,wfjn/ 6 s0v t v m from a small test charge. What is the direction of the electric fk0/ ,vs/ov9jzf6ttusn ws 7d/ ield?

  A 5.0-C charge is 10 m from a small teaad--96kd46u0huf wxw inf f:st charge. What is the magnitude of the force exper:0f f kin4a96dw d--wuhf6uaxienced 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 by a dis(0b i7i3px (q sdhjngdol/4l2tance of 4.0 m. What ihg3dqd2l/i7s 0xln4( bijo (ps the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -5mn:sm(9e adlea. t)g 4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30)9sem ( maglatne5.d: cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of r1ens3 lir1 8tz6nz 0i5idd2za meter stick and a -4.0 mC charge is placed at the 50 cm mark. A dsr 5ntzi1 l62rize 31zi80dnt 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 = 0.20 m ujnpv50 s:t)bl+5:wt 7o:vrfhsq; pz. What is the m0:tsnj r)5;7:zlo+ qvv 5 fpps :wuhtbagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The 13jq090sl y1y c oyaxse*fzx,last corner is occy1zl*130y ao, s x fej0yxsc9qupied 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 )/ 6pwirf;oa4 g+i c855iiyhobfa u3kside. 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 4p5/ oi3 iw8ka)f yb5;+cif iga6rhou 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 5.0 mC when it is placelb +)k0goqm y7d in a uniform electric field. What is the magnitude of this elobg) +y7kq0ml ectric field?

  A particle with a charge of 4.0a( dvta(u*jp 4 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 0.120 g is placed in an electric field of 60a) wtc-8amv u600 N/C pointing m6au -t wa8cv)downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.15 xbbqf3ds3)c fl c4b+50 g 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 magnitudf3s5fx+3c4)blbbc q de and direction of the electric field?

  A metal sphere of radius 10 cm carrlwso j bvga sei;juw)c7154-5 ies a charge of +2.0 mC. What is the magnitude of the ele57b1) 5wlj4ui agcw; ovej-ssctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries rkv7; ;w)o nyw7gpl eb e6q9b4a charge of 3.0 mC. What is the electric n4k7yel br9g76w;)ewvopbq; field 6.0 cm from the center of the sphere?