State the law of conservation of elekyi5hywx*y.y(bf se9 cy5n 0s 9xrh3-ctric charge.

  Is it possible for two negac23t4k hst8(mze29 x f (hd 9bqp-:jhdz(ren utive charges to attract each other?

  Is it possible for a positive and a negative charge to attract eac+:cu+e2 jo ir4tae4cg h other?

  A glass rod is rubbed with a piece of silk. During the proces.vwy 8 / fvivwj,wo6k*s the glass rod acquires a positivyjw/vww, 8 fok.v*vi6e charge and the silk

  A proton carries a

  The model of the atom +v;jskh0b wga(q 48 mney pw/2qwy9j)shows a

  A neutral atom always h5le5bs r, mok0as

  An atom has more electrons than 2c ixskiz 4na 3h5h23eprotons. The atom is

  Materials in which the electrons are bound very tightly to the nuo(/x;2 mt3;ldasj*1eyx rhg yxnk p3.clei are referred to de(j2; yxx/kt lag3snprmh1 y. o;*3xas

  Materials in which the electrons are bound very loosely to thhn9-+)oj6qn jnt7 ;xs 6t n le5uyxrs+e nuclei and can move about freely within the material antynl+ 7u-q;xxrj)o6n95t s ne6sh j+re referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. g0tv v *,ksu+q8nuv4 cThe end of the metavscu8vt+ q, *v40gknul bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and s0k8e5i5jxplq (gz g: r- 5yhwbphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which s5lepwi -kx 8yj5 5(:r gbgz0hqtatement is correct?

  How can a negatively charged rod charge an electroscope pos hf.hfz6f (st0zm63wsitively?

  An originally neutral electroscope is briefly touched with a positiverhc t:t q-3ws)ly charged glass rod. The elesq ctw-t:h)r3 ctroscope

  An originally neutral is9 5 l*g;rwfrj**bjqelectroscope is grounded briefly while a positively charged glass rod is held near it*9*gs* 5qjlwjrbi rf; . After the glass rod is removed, the electroscope

  A positive object touches a neutr+ rhpo,1gy* etal electroscope, and the leaves separate. Then a negative object i*g+erop ,ty1 hs brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged o j7wv3jnn+o f3bject is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic j+ 7v3jw3nnfoball 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 Coulob2ftpozng7d8 u, 0(ltmb constant $k$, which appears in Coulomb's law?

  Two charged objects acmi **ysh 6.bere separated by a distance d. The first charge is larger inb.* *smie h6yc magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. b prza x gi.)p)9staxy( iud .h+)(jq.*1eh gdThey are placed near each other on an insdh9u.rda1p)hj (bp.*x gqietx)+ .asi) zgy(ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eachi11s bm rw 4cf03ck-zv other with a certain force. If the charges on both objects are do-mckz1fs0 r4 1cv3ibw ubled with no change in separation, the force between them

  Two charges are separated by a distance d and erai-: o7rg4q vxert mutual attractive forces of F on each othrao74giv- :qrer. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrfvnvi otui5 2 a7r gjk;+ )9.;fmjimd6act each other 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-fourm9 ;jnrfo 6ivkvua 75tfigi+j2m); d. th its original value? The force is now equal to

  An electron and a proton are separated by a drbp;s eh x vt-40brd;j amu.j)2g/ym( istance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electbv )h/m(j;jd0.mgy4u ;xes t r-b2par ron?

  An electron and a proton are separated by a distance of *7a3l67l lwan ;gdkir 1.0 m. What happens to the magnituddln*l7 gk3rw7i al a;6e of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to yok ds1l4awqbm35zj(5k rf6 n.d);psthe size of the force onj5( y6 sn) . pok3b zqkf5;dwdra41lms the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at thp/l9 4qs92xhik ybjl 2e center of a square. When a second point charge olp /ibx9 yhk 24js9lq2f -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 force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the ch p+5uob:g ni*44yoopentroid 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 that acts on the center ch :oiyuhpg p4on4b o+5*arge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nkt9,wn7 5z ah cvnu 8ix0uq:d*ot a vector?

  At twice the distance from a point charge, the strength of the el -tp:k jt/7 ucl(pnh au )xb9mx2p)ao0ectric field

  Is it possible to have a zero electric field value betwee/gnnw 1(p3.t rvynjz9n a negative and positive charge along the li3(.pz/wnr1v nn jytg9ne joining the two charges?

  Is it possible to have a zero electric fa:utgu 1+zb* k,xopystn (2;y8vpw/ y ield value between two positive charges alonga2+tz8y(ub:yowgku;ps v1 t*n,p /xy the line joining the two charges?

  Electric field lines near psitive poiflp8 o.6n p7o+3 lwdpint charges

  The electric field shown jolk- ao x-8+)v/lldf

  Can electric field lines inte b56fovm*hndb,d7upk *l b97 (wyuf-srsect in free space?

  A solid block of metal in nexl aik38+v +electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning t+ +nkve 8xail3he electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of 0p uufpm.;ax0 equal diameters are each given the same charge, the electric field (u.xpafu;pm 0 0E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tablefd02 cd8g.jqp o)9tx73m 5qq+f v*cdc /xv jud in a region where a uniform electric field is directed straight upward. What can be said convj70 j)q/5tf8ud qo2p9xc.c cq d+m xf3dv dg*cerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriu .ovi2jdy6 1zqx;sv p7m near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gr ul98pmon5)myyi a: r5ounded. As compared to the case without the hollow sphere, the electric fieldulan:5mmp8yi5o9 )r y at a point directly above the hollow sphere has

State three properties of conductors in statd.1ud7w : af in3wg 7ai0nq*exic equilibrium.

State Gauss's law.

  The charge carried b4 ekz2gmndwtrd5r2: (y 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 of +2.00 mC. How many mzam-jwl .fobj424u bwil1 ls27m.x9 kore protons than electrons does this pu2jf-zi 27sjob.b mmkw a l49lwl .4x1iece of plastic have?

  What is the charge on 1 kgy 9l ,evzfaq,03h;pz7f6gt ik of protons?

  An atomic nucleus has a chaakx depfi. u.gy 3 rsyvw1h5emn6 kge4 .92(s5rge 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 of 2.0 y 5w8gjy n2b k r-/dpcqz ).woq*vym-7and -4.0 mC, respectively. What is the magnivg.85 )y-y2mncpd 7rj b*wowzq-ykq/ tude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and z;a(kch 2 aq(cu)vxvyb,1u) uthe force between them is 1.0 N. What is the magnitude of the second cu(aau qbh )( cxu;,cv12vzky)harge?

  Two 1.0-C charges have a force between thtnmgqshqc51ums c :qhu1 8n0k,r2 . )aem of 1.0 N. How far apart are they?

  The force between a ec;n(ko/,0h l,cd lu r4rgrg+$30 \; mC$ 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 force. If thevo tzr85.:oh fqc1u;.,eilfuy are moved to a new separfuc ..5: luoeqir tozv8hf,1;ation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed o q,c2 -amn* y57 cvqb+/qslzlun 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 magnitude an a5q*qb/7q-c y+lzl us2,cnmv d direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are pl6nbqs 61v t2jjuk; 84rv,ox aoaced 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 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction6vox;4vjao6rn82, skq1jtu b of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 m,kikzbau*d0+ qhd, w5 C 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 3.00hw0*ub 5zaddk,q i+,k-mC charge?

  A point charge of +Q is placed at the c2ujav(cqj50;ness /vqcp5drk x4 /h )enter 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 cente )q45jvh 5ka;pdnu0xsc(v/ rceq/j2sr. 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 is at (0, 0.10 m); Q3 = 5.0 nC is atajj v,6ozbhx7;*-o2 k /h3gz*nu txee (0, 0). What is the magnitude of the net force on the ne,jh*k3x j voexaz7;/ t 2*-b6gzhuo5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 4h( nv luobw4uw77h -xoy5k;ym); Q3 = 5.0 nC is at (0, 0). What is the direction of the net h7;5nwbkuu lo7wy4xv4y o (h -force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are x : vdi9sn-ume5 ks24hj/o9ff placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electro4 -sisf2:k uom9 /j9dfh5ne xvstatic force which acts on any one of the charges?

  Consider point charget1srvw k va(fka; 245kwtls)ok0ll*(s of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it beslaatrwt1sv ) klv ok4w l(( k5*k02f; 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 thplp kfgvv65kngb)kq p5v 3 1(9e origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is ze6vpl5 nfqg v3kb19kv)(p5 g kpro?

  Charge +2q is placed at the origin and charge -q is placed at x6 h (6o8rzx1ddg2wm rz = 2a. Where can a third pos( 6x6grd8 1dwor z2mzhitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 gnmff bx8f jx/;wuj0wb*dt q2 +,/ w4bd. 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 byo.9opw2 c c*++ rjfrm stt)ab/ the attraction of a fixed proton some distance above it. How far above the electron is* mj /rcf9w .t2cb)potas+ro + the proton?

  Two 0.20-g metal spheres4 wk:2s jewt.lys.h2x are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic :sj.l.st ey2k wx4w2h 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 magn-1sdrv.z ece h72bv d)iel. c/itude of the electric field at a distance of 1.0 m from the nucle-.2dc ./clsv id1ezb 7v)eerhus?

  What are the magnitude and directin tsnx8i-yc q1d/t8 7q,rekq.on of the electric field at a distance of 1.50 m from a 50.0-nqnen td81-,t/q. i87kqsy xc rC charge?

  A 5.0-C charge is 10 m from a small v9vmlv99ai 67mgu k q5test charge. What is the magnitude of the electric field at the locatiolu 7 9vmq 9ka6gv9v5imn of the test charge?

  A 5.0-C charge is 10 m from ab u5k,-dz 1bgn small test charge. What is the direction of the electric fb1gz5-ukd nb ,ield?

  A 5.0-C charge is 10 m from aqmin.yo xl1 -i)t 0n*b small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locb)qi-*mlny ox0.1t ni ation of the test charge?

  Two point charges each havkhe2tq2 *d ks1e 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 the eqh 1kdt22s*ktwo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meethre+q71- or a9yl8c ter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at ttrylqr 97 chao8-e 1e+he 30 cm mark?

  A 5.0-mC charge is placed at 9couvx- jn /7pmbjn4ucz2+yix+n*- y the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on o7nmj-cnu+v c/b2iyuny+p x4 *-j9xza line joining the two charges is the electric field zero?

  Two point charges of +3l;go s7 .y phc i/)uhp07glf/fm6b vw:.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Whatwffl/ ):v7s6 o 0ml7pcy.g ugpi /;bhh is the magnitude 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 0j gb09.; a;2nk m)sczjfr/jrqm/bv34strn,s .50 m. The last corner is occupied by a -3rsnrb0ja 4rvtc b3sq.9//)s jkmjmg2;z; nf,.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 at the corq463q/ 7rfyj o7 czc3hbun y1iners of the sq/4 h3crq1y c7b nizfj3 yq6o7uuare 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 5.0 mC when it lp x,tc*tzh/ s2 c7z/iis placed in a uniform electric fih cx*7z s z/c2/t,ptileld. What is the magnitude of this electric field?

  A particle with a charge ofc7klkg3vb uk, 5yl9u r52+v lu 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 field of 6000 N/u .iu1 w;uc njfnz+(b1C pointing downward. What charge muij; cu1 n bfnuu.wz+(1st be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0sc(k62bs fx66 x3 btde0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field(2ctbx66 sfek s63bdx?

  A metal sphere of radius 10 cm carri0j*8mjtb: 8ptwxaj1jes a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spx0jj p wt1jb8a:*jtm 8here's surface?

  A metal sphere of rads/- i ycr0y3.csdimn0 ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center y-3c.c0mr s i/isndy0 of the sphere?