State the law of conservation of er he;5miuxho;+90m-*s, rmpnoakd(ylectric charge.

  Is it possible for two negatiaxjxup 5,b:,ess4 q3lqg0 *tubsy 33uve charges to attract each other?

  Is it possible for a positive and a negative charge /tfj kcofw( 9w8tqm .1to attract each other?

  A glass rod is rubbed with a piece of silk. During the process i x9n7b/ 3raz t2qnh2 f44yebfthe glass rod acquires / 4zn q 4bx39n2bft f7ra2hyeia positive charge and the silk

  A proton carries a

  The model of the atom shoa y lbc1jlm4m:p t6dg j74w8s(ws a

  A neutral atom always h ptxy3dsx) +:7imxaws /86 (l6intazcas

  An atom has more electrons tha4* duk uc6n:ndj-t. isn protons. The atom is

  Materials in which tha7su+dndai 8- 7;4b n26wyyilt*2jp(ybu y ume electrons are bound very tightly to the nuclei are referreduwin2yd7bb d timyj-y4aaun8lp*7; +yu(s2 6 to as

  Materials in which the elec4kh.c yk;+q.yz fcegoi ws.r((n3 fa,trons are bound very loosely to the nuclei and can move a gic(+wa .rzk ok ,;f3eh(sqc. yy.fn4bout freely within the material are referred to as

  A negatively charged rod is brought near one end of ax- 0ekd+ij ai5qhji ((6ckw-d kk) c(mn uncharged metal bar. The end of the metal bar farthest from the ccik0+m( x )-e h-kd5(aw(jki6kjqcdi harged rod will be charged

  Sphere A carries a net positive cha6yg7: b6tlb wzrge, and sphere 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 statement is correcbg6 6z7lt:w ybt?

  How can a negatively charged rod charge an electroscope positivesvq7v;v ,rw2z l /xq,kly?

  An originally neutral electroscope is briefly tof4ffqqk 6um 9glv,)9ymsap* ) uched with a positively charged glass kag)msm ffq9 4p u96v,qf*l )yrod. The electroscope

  An originally neutral electroscope is ground1ous*y0,rh j eed briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscor*sj1e0y, hu ope

  A positive object touches a neutral electroscope, and thei( yrxd ;q:zas: 27bmi leaves separate. Then a negative object isi; d2 s:xaiz(:qrb7ym brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neut+g vf+wkr*,5*c hzaozral metallic ball rolls straigh *goa, v kzh5rwf*z+c+t 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 co(x9 o.cm+sq/*wjpxpo9zoyo cc ,e 0(znstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lc(u+ok (wyb v(arger in magnitude than the sec(kw(ou(+yvb cond charge.

  Sphere A carries a net charge and sphere B ncj o +l w).fmdxx;.8dz-,lyp is neutral. They are placed near each other on an insulated table. 8o)-+wyd pmj ,xxf.; l cld.zn Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cc3*a2lb f 5fx4 xw9ntvertain force. If the charges on both objects are doubled with no change * fc vtn2l 9xa3wf54xbin separation, the force between them

  Two charges are separatytg)r1t g7b99x1 3 *ywivazehed by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcerx b zitgw)g1t eayy13*v9h79s?

  Two charged objects attract each other wijsv9x-w;j ;yxth 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 xws; ;-vxj9jy value? The force is now equal to

  An electron and a protuz ;2 /1(wlxd+hpbxmson are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to t/shxx l bdmp+;2( w1zuhe first electron?

  An electron and a proton are separated by a distance of,d.lndv*ly ;pc x0lk7 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proto.7k*n d yl0lc ;lxdp,vn?

  An electron and a proton are separated by a distance t/ izu2 3af*h-:spuelax7df+of 1.0 m. What happens to the size of the fofxa*u-tpad/u fhl+3 2:si z7erce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at ntumz8rjjib+ -n; *h+ the 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*jh+zn8m- buint+ jr; 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 h 3bnia1ah)v6centroid 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 charge due to a third charge of +Q placed at one oh6vh 1inb)a3af the other vertices?

  Which of the following is not a vectv40j- axjsfo- t6y tqyvl/s50 o1v .uoor?

  At twice the distance from a point charge,)wm s;d09-bk( fca+tmo hoxnm:,3flx the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pokh(eq 9a a4dk81/cu0z d +w-sx0j hcrnsitive charge along the linek 0s8 +wu-ne qa( x1j0rdzka4chdc/9 h joining the two charges?

  Is it possible to have a zero electric field value between two posifbgsmh :n81 s (6rd9vbtive charges along the line joining th6b1sm (9rv8s: bnfd ghe two charges?

  Electric field linestr f069opnk g.4jrf *o near psitive point charges

  The electric field s6g+5ahx 2 qiwq; oe:pe) cqgk*hown

  Can electric field lines intersect in free space pu2c+md i7rlwx-;qr/ ocpw,9 ?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e1hk6qv. / /ahyqx5 tkdlectric field. Give a statement concerning the electric field inhhq .1 tqx5 ydkak6/v/ the block's interior.

  If a solid metal sph:5c) puuaqq0 mere and a hollow metal sphere of equal diameters are each given the same charge, the ele0c:qp)u ma5 quctric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden taq lqmz(, 6e+beble in a region where a uniform electric field is directed s l e(emzbq,6+qtraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near k zi/-w95ksb gan electric charge

  A positive point chan* vd9lrqi .t7 ky(:lcrge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sn lvr(d7.yl* i:ktqc 9phere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equ:s:mn,sl:whk 1sitr45,bh f p5 bf v2jilibrium.

State Gauss's law.

  The charge carried by ont ,(zo0qnwj9 we 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 mCxe) hn109mep8ge(y4 d*bdfi8xu (h s)aw -wvg. How many more protons than electrons does this piece of8 pevbw0s y -uw)((exhn8ih94 m 1gfd*axed )g plastic have?

  What is the charge og;6o4 iz))cjb .sptvqn 1 kg of protons?

  An atomic nucleus has a charge of ga2,lygn) / bjubicu yu:6 j.9$+40e$. 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 and /snu scb8 72-y :u6w 9uopkiyu-4.0 mC, respectively. What is the magnitude of the electric f9uyb 8s-y 7 6icuu:kun/w so2porce between them?

  A 1.0-C charge is 15 m from a second charge, and the ystra; ale/sc c:.1h0j3we1 t force between them is 1.0 N. What is the magnelsh;tt ja.1 c/3 ye0sr:cw1aitude of the second charge?

  Two 1.0-C charges have a force betweegu 2tsiu8;c;s- bh(cyn them of 1.0 N. How far apart are they?

  The force between a 7u 0hxo) /2vgqh,f:1tbphzk p$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ini itrj8:g;5f nc6bb(hc q8r r6ntially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8686bg 5nf;niq(rrcr t 8bc:hj.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Tk)*mhgx8 6wfamgi4-npix 6u(ixm :;a he first charge is at the origin, the second to the right at x = 50 cm, and the thmm x)xpanhmuif-k i66i 4x*(:g;gwa 8ird 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 mCrlf55ph4 n n-r;jn 5zv 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. Wr - n n5rv5fjn;5hp4zlhat are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are locatevfw *+m;aud*pgiu88m y*n b2cd 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 *gm*ca ymnb v*2uu;i +p8fw8dmagnitude 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 point chaa1qei9c5mvakn. sk2r9kb )k/ rge of -Q is placed at the 2smn b 1 9/9q.akvca)5kirkk eupper-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 the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nh,- +hlysnf5bC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC char5fy+hn h-s l,bge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = r6x:8 haix xq7xkw+ u8-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0+r7axxx6iwqux8h k :8 ). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ve n*wi+ntxzp:,rtices of an equilateral triangle which meas:*zn wtip +,xnures 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 rya )eawazr./aupv u9 , 7s5o4 c5 7yxo+6kxdgand +4Q, which are separated by 3.0 m. At what point, on a line between the two cha zxacau,. +7u6pk9 dv ) goysr5xar7aoye/w54 rges, 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 charmi32ar q e-(wkbd.f +zge is at x = 4.0 m. Where on the x-axie-fmqzai rw2( .dk3b+s can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placb)bg6 d,)uz;f ir kgh0 v/rr9led at x = 2a. Where can a third pos ih6dfrg )9rl)kgu/br0,vbz;itive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A togz81 gc65k3zu k jqbk*tal 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 attraction of a v,p2m dxrkigvihvh)s dh7j36)8:1n n fixed proton some distance a nv)hdp rnh1hx)v28, 36:gi7 dksjvmibove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fr l,x ;zjf 5l*q2i7rwcgom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angll5;gizlxc r27 q* jwf,e between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. W-ez9jd:9 6c ;iucycoq zk+:nv hat is the magnitude of the electric field at a distan;u9vqend+zc k j6iyo :-9 :cczce of 1.0 m from the nucleus?

  What are the magnitude and9 qgh c+q:5),gs)zqdh+xfqz x direction of the electric field at a distance of 1.50 m from a 50.0-nC ch+fqc ,xzx+ )qsg zdg:9)hq5hqarge?

  A 5.0-C charge is 10 m from a small test charge5cju+j 6auwr3e) d *hdomw3;)0 vmhlj. What is the magnitude of the electric field at v*mu3rjj3m0wa )6+d j;wo)dh5uelhc the location of the test charge?

  A 5.0-C charge is 10 m from a smal0t2 vd0kjt *o mddw4(vl test charge. What is the direction of the edot wv0(4jmddk 0 v*t2lectric field?

  A 5.0-C charge is 10 m from a small te7+mh )z2kxa0ps e 2qgfst charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tes0e2 xq2 a7+gphf)zmk st charge?

  Two point charges ea (d7)83tn eup0s.4fbryy qsouch have 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 snof4(y8u 0 pb)e .yqdt u73rsbetween the two charges?

  A 5.0-mC charge is placed at thp6md o/byso8hh,zd b 6;n u09ge 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What iho/s bghdy0m zdn6;u8p,9b6o s the electric field at the 30 cm mark?

  A 5.0-mC charge is placed a.5qefpbnym .4 +nx6hyt 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 a line joining the t5+nmypexn b6.hqy 4.fwo charges is the electric field zero?

  Two point charges of +3.0 mC and j)4num9x ye k3iac *3x-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of njx m3a )kcu4 e*y39ixthe electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners yavo6 8 ;xcbw7of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electricbv7cya x6;wo8 field at the center of the square.

  Consider a square which is 1.0 m on a side. Charc sr*;mcg8tbadl+5jn9z q, x (ges 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 electric field at tag* +b;5j xdr, tcm8(lqsc z9nhe square's center?

  A force of 10 N acts(4*v uc3nxk s pn 5,7xv*ikffw on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of t4v xfxu *fn,(n *c7i53wkvkps his electric field?

  A particle with a charge of 4.0 mC has a mass of35t)e,x:r 2aytp(pplm jvqw) $5.0 \times 10^{-3} \; kg$. 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/C poins fxry e(ip.wu., y*5vting downward. What charge must be placed on the ball for it to be.ufy(ei,s xp*5.wv r y suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball 574jrk yg fz0tike/ (yis placed inside a uniform ykefk7/jg0rzi5 (t4y electric 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 magni7 eigxwd qq9jf 9z7xik1vf/ 0-tude of the electric field 5d7 xjiwi09qevfq91zx / gk7f-.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the7k -- bq:mqukouz(ui7 electric field 6.0 cm from the center of the um:qio7 -quzku-(b7k sphere?