State the law of conservation of electric ormwa,b 9758:e hn v-+uwtzvscharge.

  Is it possible for two negative charges to attramjyi.g imxt 5,o4c 6:bct each other?

  Is it possible for a po7 33ebmu 9hipy5o b7;awtwvl0aphc8+sitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece 9 (dpflluqv .t )c qq:q2zxu-(of silk. During the process the glass rod acquires a positive chqudtlq9v)qqp- u( (f. l:x zc2arge and the silk

  A proton carries a

  The model of the atom shows abydlxr6-y)*.f ynb k9

  A neutral atom always n/j3y-g;g29l 6 tinw y5 vc*obeva+ clhas

  An atom has more electrons than p lm + gm,27b9axw9leqmyzf9 9n7yojq)rotons. The atom is

  Materials in which the electrons are bound very tightly to thg.o7z 3exn(bk o, )bjfe nuclei are referrezenbf( j ko).o,7b3 xgd to as

  Materials in which the electrons are bound very lie+j1ja5/hbz blxyk* tb;pe4f 3bz;, oosely to the nuclei and can move about freely withi4 e1kf,hb/j ;y e la;*3pixbzz+ b5tbjn the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metalczrgp/)47kpw cn.f l + bar. The end f l/wk4czgpp.)n+rc 7of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. T4 mmsfla2;a jqdju,+7 zq o.p.hey are placed near each other on an insulated table. Sphere B is brimafjql.;s42d +mouaq jz ,p.7 efly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elei3 f.l*5o qob ;g f,ahfc (0r0c)avcuactroscope positively?

  An originally neutral electroscope is brief:i z2u:t.pud kly touched with a positively charged glass rod. :zip. dk2ut :u The electroscope

  An originally neutral electroscope is grounded briefly whib,vy .w.1 cri,tgsk5 qle a positively charged glass rod is held near it. Aftywsq5,,.i1rvb ct g.ker the glass rod is removed, the electroscope

  A positive object touches axdzxluvnc k5 0 3 0i-+ltyor)) neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not zkri)d v 5yn+3l0t-xx0lcuo ) touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table.5h80b ,forrqn. tfwr1 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 storfrtqn01wh5o f,.8b r ps. 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 consta )8s0x3n;+r0sd1he( is usfavrfzp b/flix ,9nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charggrwe d549sudx;7rs 7ge is larger in magnitude than the secones5g rdwg9rs ;7x7d4u d charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ;)+fytezy5 1wo+c dydnear each other on an insuled ;ywod ) ++yy1fzc5tated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otz*8p w,h7.+vju wyl niher with a certain force. If the charges on both objects are doubled with no change in separation, the force b 8*iy+ z.nwlvwh j,up7etween them

  Two charges are separated by a distance d and exert mue i6h((exvj :u3 vtd5ctual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the e5hxdi3t j :( cvv6u(enew mutual forces?

  Two charged objects attract each other wie *ku7 19r5 6kool45vhoh lex*rzkkf;th a force F. What happens to the forceel h9 vkkez5xr*k f*6;1lh o7ko5our 4 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 to

  An electron and a proton are separated by a distadzcvdovdsa2h82; k59nce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron ivh;d2ad8 z2cok vs9d 5s placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happ42 m: + ts8xquzy.pvff8yss33 zf r;teens to the magnitude of the force on the first electron if a second elptzsu 3z4e y2.8t: ffq;yrmxs vf8+s3ectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. km d ,x:qjmjkg8au)93What happens to the akg):uqj3m8k9m , xj dsize 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 the center o6i)5a v:ba2l1rfd eh pjd)3a qf 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 ad:dprh 6je2)il1) a35qfvba 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 force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equw) 5i21bhgfcoilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts o 1i wg2hc)b5fon 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 followinbuch ( :if(/m ) uc3k3ktjmby;g is not a vector?

  At twice the distance from a point charge, tal6d s9tef:e),x xt2che strength of the electric field

  Is it possible to have a zero electlwifbg v79z7tc+ ; 9h+ wa3a,t:nmjperic field value between a negative and positivlt9a; pa93te,+7im wwb 7:nfh+cj gz ve charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two pos bmppoq9::pss)af b1 3itive charges along )sbqps9b3p p: f:1amo the line joining the two charges?

  Electric field lines near psitive poind t;lu0r a6j-gt charges

  The electric field shown o+wvzp0a/ v,/aaj r t;

  Can electric field lines intersect in b q;7vz4ex2g4ph4i u ofree space?

  A solid block of metal in electrostatic equilibrium is placed ityfh yik9 ; t6x/ldz)5n a uniform electric field. Give a statement concerning the electric field in the block's interior.tzt9fy / dkhxl)i;6y5

  If a solid metal sphere and a hollow metal sphere of equal3p4) hd0fwtd -wdop,s diameters are each given the same charge, the electric fifs- oddw4)pw h,d tp30eld (E) midway between the center and the surface is

  A cubic block of alumw3 ua(xm)hu)j y8b9+ tckmo+sinum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning tub83 )hsakmy)+mx 9 t+j (cowuhe charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electri4s nqox6qdh/g r4qsuk21+;p1c1u zuzc charge

  A positive point charge is enclosed in a hollow metallic sphere that is gru t tgbiob6q+), . 0 bt3cjoq5zif-y)younded. As compared to the case withoub yt-gq,.jcq+fto) 0 )5u i 3i6btzbyot the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of nxq jpv-p w73ju.xux6m912rcconductors in static equilibrium.

State Gauss's law.

  The charge carried by one snd g 3u(nhb, (h1j:zn. yypj.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 of +2.00 mC. 91qgy6pyfa q9 aqd3 h a;ywd*3/93fa afyr o3s How many more protons than electrons does this piece of plastic f fdy6 s9aq9fgwaq91 q3o3;yy p3ha* 3yda/ar have?

  What is the charge on 1 kg of protons?y*zbsbweq(o: q+ 9m v9

  An atomic nucleus has a chargw+-hi yst .k f/-qtwx7j38m am.l 5hswe 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 c7:ys fmw)qpjll5 6pl+m, have charge values of 2.0 and -4.0 mC, respmjpq 6)f5l +sypl:w7 lectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from + srks1ocul:;./nbme a second charge, and the force between them is 1.0 N. What kmr1./c; s:buosenl+ is the magnitude of the second charge?

  Two 1.0-C charges have a pk .afuv,et/p ( ,d,px2my iwh*lrf+ *force between them of 1.0 N. How far apart are they?

  The force between a dnvy:hf y.4(1zfsf k ,$30 \; mC$ 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 1.0z:0sdz/re 5l x-N force. If they are moved to a new separation of 8.0 cm, what is the sz l:xe0/dzr 5electric force between them?

  Three identical point ch tvi;b8h(yfvo 5zkad/,,d 1w xarges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the secb5 (d ,h yvtdkfv/zi8xao,1;wond 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 pldoqsrvudm:4gkz *)k 3 ()qb 0faced at the origin, -2.dk 4)qukfbz m)sv3 rdgo:* (0q0 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 the charge at the origin?

  Three point charges are lo9f byk17l9 s,eg(jabwcated at the following 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 ok l b a19g,bs(wy97fejn the 3.00-mC charge?

  A point charge of +Q i)7pp0 brxl9/i ua4),hbzb x )/ azbqpts placed at the center 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 centeapp )z))q/0blaub xi, t xp7bh49/rz br. 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 55 amjjptbv,h7.,m ti.30 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 net force on tat,t,jb5vm. mpi h57j he 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 = 5.0k91*h* qfs zja nC is at* zq*afks9hj 1 (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical chargv(o qq- g:uqqcts,3)g9 n;rpbes of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electr (sq)pgo3 ,qqn-t;ru v :cq9bgostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated b i:3y,hu+cc h;hc+z d )h*6tr6iozmu,l su2h dy 3.0 m. At what poi )6h,ydruc+ 3h+h6 : h;iu*zt imuhdls2coc, znt, on a line between the two charges, would it be possible 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. Ws)84e9ludcsa-q4r av g 4ir2nhere on the x-axis can a third charge be placed so th8rlg )4asc9duq42r -isva en 4e net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at2rgglr. qi/r(c, et.5hpuo0i x = 2a. Where can a third positive .iu(cthq20e p5lrrr. gi /go, charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota791ob ,a,j i2 uaxhhcjl 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 m+(j/)xv0lvlvo8z2sf b(oj9t 4g 0 qqgcr9iggravity by the attraction of a fixed proton some distance abo ()9c(0qxt9og0/2z 4v r+movq8svbg lj jiflg ve it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a c9bjb, lne lo2(ommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the tho le bnl,(29jbreads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magn+,c 3yl; iqxzq lhq j8+zyf;.9ajt8coitude of the electric fi;ciyzc8,9. olztjhf ajy3xq +8q; l+qeld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the *oar,2vkui6j d9d:6, .tda9 wnsvyio electric field at a distance of 1.50 m from a 50.0-nC charged*w:u.s n2v9j 6dv t,6d rioa9ka ,yio?

  A 5.0-C charge is 10 m from a small ev pi p9uj95azk:1p:vtest charge. What is the magnitude of the electric field at t:95:1vp ezu pkv9ap jihe location of the test charge?

  A 5.0-C charge is 10 m fr 8wd34cjiw0r;gfn t)jom a small test charge. What is the direction of the electric rj gw 34j)8idf;wctn0field?

  A 5.0-C charge is 10 m from a s7. n:/hsfeo hqkk8t/ymall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the 7ty kk/hnfq.:8 soh/etest charge?

  Two point charges each have a value of 3: el8c6: kuacd.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwld u8::ec c6akay between the two charges?

  A 5.0-mC charge is placed at the 0 c8 v2-saqsn)m(gy/ kk 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 30qy8scgavk m-k)2s/( n cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC drf- 2es2 zf3 :gx-ju7k o qbsc7.kys4charge is placed at the 50 cm mark. At what point on a line joining the two charges is txz-s:r s23k.47q guj2ksfefdby7-co he electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Wh(fk)opp6qp a+at is the magnitude of the 6(ppoakf)+p q electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners1 q+q(ht, b d*z(r hv,cge0zf/qixm7z of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric ficq(qze(g fq0 bzhz1 x7,/thr,+m vd *ield at the center of the square.

  Consider a square which iud 8z9uz) p25i gri5kxs 1.0 m on a side. 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 (0, 1). What is the magnitude of the elecr2k 8ux5g 9)iz5pi uzdtric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placeddh4v 07y( rfpzw ;xc4h4(qhdp in a uniform electric fi h;44w hpyddfx7 vz4(p(rq0c held. What is the magnitude of this electric field?

  A particle with a ch ( .u;m to qdzs,-v0wxcxys03qarge of 4.0 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 0.120 g is placed in an electric fw ryi5w8uw: 5pield of 6000 N/C pointing downward. 5i8ww :rupwy5 What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ba1h-z5*l nkp*)nau hp mll is placed inside a uniform electric field, and is suspended against the force of gravity. Whak-*zhap)u1 pmn 5hl*n t 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 tcd0lc/pki ngq o2j740he magnitude of the electric field 5.0 cm from the spher4icc/jpn7qlo k0 d02ge's surface?

  A metal sphere of radius 2.0 cm cah 0aud-+pd 8i0s t5(y knorv5u 6k(nhfrries a charge of 3.0 mC. What is the electric field 6.0 cmdy5ipvn h-kkd5u86 sah 0tuo0fn r ((+ from the center of the sphere?