State the law of cons9w9qkxwcli r,z yrj66akvkg h(,ip3-+ n+5kwervation of electric charge.

  Is it possible for two negative charges to attract each otrpry+qsk-zs55 (hl *t her?

  Is it possible for a positive and a negative charge to attract each othe4v8n/m/ : khjvgf l9gnl1yvg 9r?

  A glass rod is rubbed with a piece of silk. During the procesi;mpvrr26yuyuth) 4 , s the glass rod acquires a positi u4,uh)it yr62 p;ymrvve charge and the silk

  A proton carries a

  The model of the atom ve.r;net7 k(n8 fz74kd7rpq zshows a

  A neutral atom always h.ut m*+vni7b4d(ds mias

  An atom has more electrons than pr u q*ib0fq+ crw)ir/8xotons. The atom is

  Materials in which the electrons aoh no+drf( (r8re bound very tightly to the nuclei are referred to aso( onf +8rrh(d

  Materials in which the electrons arey n/nbo6jp)yyyu0 i ,. bound very loosely to the nuclei and can move about freely withi byopyu0/j,y6.ny )nin the material are referred to as

  A negatively charged 04ek71lzw +9 kb,,y1ap b os3srsch; quzkey3 rod is brought near one end of an uncharged metal bar. The end of the met07k1,b,;s1w +a9z4r y l qheusskcoz3 3beyp kal bar farthest from the charged rod will be charged

  Sphere A carries a net positlw+o 1xp1lpmuhn5 (y3ive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphe1u51llmno px(ph+y3w re B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope po26 lsn:dn8hz oe g3v5nsitively?

  An originally neutral electroscope is briefly touched with a pobn+ 2 c0miq1r15vo0pvm nbb:qlz+3ei4w bof0sitively charged glass rod. The electo m fe0wib+bvz: v+rip1 02oq5b4l0b1mncqn 3roscope

  An originally neutral electroscope is grounded briefly while a positively chargmj rw x02x.(tvl+1kf ded glass rod is v1wk2xr(jt+xl f. m0dheld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutrap8n k r/ gp+0qe:3vhjbl electroscope, and the leaves separate. Then a negative object is bpje +v3qg8pk:r0bhn/ rought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatedzzw,dj qaw7/ - table. A neutral metallic ball rolls straight toward the object, but stops before it tou, / 7dzwqwa-jzches 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 constag g uo5r6vp 8n13st/fbnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cr ps(+pj4d)yg -,bgfw harge is larger in magnitudy)r p4( -pb,w+ggfj sde than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are. x e)tadmchkwucz,1, ar0i h :d*6r;e placed near each othermh*ce iec trd1: )uzr,a.d, 6x ha;wk0 on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a iw+ dbo6x ujf2.+h )iacertain force. If the charges on both objects are doubled with no change in separation, the force betwiha +i+2jowb.)x ud f6een them

  Two charges are separated by a distance d axd+,s.d 5e3 9xbdk05 e ajhtc dbq+p*pnd 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 forck+5p0q bd 9hx3.d,aj +bs*pedctx d5 ees?

  Two charged objects attract each other with a force F. What happens to the f9 .6p dphpr4 5xhp*:pauah)g corce between them if one charge is doub6 rup94c hppd.axg 5aphh:p)* led, 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 distance of 1.0 m. What uq( aq4+fu 8iihappens to the magnitude of the force on the proton if a second electron is placed next to the first elect(4i quuifq+8aron?

  An electron and a proton are separated by a)nuh* (sefl p8u4v6-z mcr/7r r8prmf distance of 1.0 m. What happens to the magnitudch8fn67lfru*m vr s-zm(r)8ue pp4r /e of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated r u*xd-r26dtl by a distance of 1.0 m. What happens to the size of the force on the proton if the electrox*tu d- r2l6rdn is moved 0.50 m closer to the proton?

  A point charge of +Q *d15qomt cx/hs *c*an*c-tzwis placed at 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 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 centerc1h*-totwsqacc **d5/*x z mn of the square?

  A point charge of +Q is placed at tjye5 /.g,du4qnhlnrb d1z uv/7 po/l7he centroid of an equilateral triangle. When a second charge ofl5g 1 l yod/nh/r7./nzevjuu b4,p dq7 +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 other vertices?

  Which of the following oh/f+9g *:gn* ya2xzmyfrxp :is not a vector?

  At twice the distance from a point charge, hc,l/uh,;fi ythe strength of the electric field

  Is it possible to have a zero electric filg4 an0i(xsi- eld value between a negative and positive charge a s0n ga-iixl4(long the line joining the two charges?

  Is it possible to have a zero electric field value between rz l2hx/6;u tmtwo positive charges along the line joining the tw6ul2m;/ht r xzo charges?

  Electric field lines near psitive poinu i)o2(azncu +1wkr e9t charges

  The electric field show3 3g 8b 3ps3q*,mgk/pi ztbyl:xd5xeun

  Can electric field lines 7j0pw ile53ol intersect in free space?

  A solid block of metal in electrostatic,altunm3+.qf equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the b, flmnt3qa .u+lock's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametersf()wt(mjd(ssn v *4*keako1 s are each given the same charge, the electric field (E) midway betwee(s 41mk)njkf (vos( da w*ts*en the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whhm4i mw3kuq ym2 1j83rere a uniform electric field isj3 myiqm rw3ku81 4mh2 directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium-g 2m-sm me rd);h,f3 uuwxjd4 near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere t ygayz* 1)qzauzt8c9 4hat is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hy ta)4zac qzz8g91uy*ollow sphere has

State three properties of conductors in statikq;v-go7hkx 8s8h9+etf 5vlqc equilibrium.

State Gauss's law.

  The charge carried by one electrof6f( * z4uebn5to7poauii j11e16v vwn 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 ofaz* 1 x01eg9f+o0aa jswftt 2w +2.00 mC. How many more protons than elecjt szoge+9aa xwf20 * 110fwattrons does this piece of plastic have?

  What is the charge ohq,9vl+nxntech - 98c n 1 kg of protons?

  An atomic nucleus has a charge of3glyn otvnm- uuu808j c7x8-c $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated g6mva ubzd zi7j c5x;xxa6166by 1.5 cm, have charge values of 2.0 and -4.0 mC, revix c66;a76xjd 1z 5x6agmbzu spectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them i mkw4te*y5lc 92 gvr6k w wke4r*l+yv9s 1.0 N. What is the magnitude of the second charge4r*yvkc klw5wy+4v6*r29g ml9 k twee?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are((s qi/ (8uf+3owwiocg ytq :q they?

  The force between a w(l :.gmdco v/$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience f(a.0k;ype )-slcgv a-5uf wc a 1.0-N force. If they are moved to a new separation of 8.0 lkaf ()-u5scv;ypf-c a0eg. wcm, what is the electric force between them?

  Three identical point gnq9fcwg/8 e n2l8h4+*ydzqm 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 magnitude and direction of the electrostatic force which actm4gz8gy*lcenq wh dqf /9n2+ 8s on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placevmf rg5m0 .5ybo;i+u- kvfl0zjw 9z. td 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 mag0;z ffobm.5vrtgwimvly 0 + .-zu5k9jnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the fol46x0s wc(hv 6k-vssxck(g mq-lowing 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 magnitusvsx((k6 hc c6-vs 4wx- k0mgqde of the force on the 3.00-mC charge?

  A point charge of +Q *yup i, zho*.f n5 fe7wh2pps6is 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 center. Whfi2hpz u.p*, 5nh6f7o p*w seyat 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 = o1nig/xq6- 6* qw:hc8hd9bnuzf wv /k 5.0 nC is at (0, 0). What is the magnitude o 61ovkf/qd8/ 6b:icq * x-w9 gwhnuhnzf 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 )wf0a3h l4u3q,w iq ni dlic(8m); Q3 = 5.0 nC is at (0, 0). What is the directnua3widwcq()ilh0 43 qi, 8f lion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqwiuv9mjix63xz wz4)4. f,vx u uilateral triangle which mea)x3,iui4 wvxf4w z6ju mv 9.xzsures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargesybc8w87 hkr :v of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges7v88wrb y:h ck, 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 o//to fa8u6:vx:ub3y:on gs2t vn n sx)rigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be plyxa/n :)tvou6n3bv 2/nusxso:f g :8t aced so the net force on it is zero?

  Charge +2q is placed at the origin and ckb v,+zt 870jn.dro7gztbo8jharge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zer z7 v 8o0r7+k,b8bzdotjtn. gjo?

  A copper penny has a mass of 3.0 g. A ;xud(2ynwd; 41qb bsvsq2 h2xkztg 15total 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 byvo.zn f 9wxw a5j:kp,) the attraction of a fixed proton some distance above it. How far above the electronwpn 9kfa5xz. j :)w,vo is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondj8jt4,pll.mzex ;f r 3ucting threads which are 30 cm long. Both are gi zfe m;.,lj plrx84t3jven 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 vf(m2i 06w- k7m*rx;hv u;q1 hjzle koof +40e. What is the magnitude of the electric field at6o ; lhm;w u10v7z kqr2kf*jv(x -hiem a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanc4i rxxe:rpoe*8p5okq 32 *acb( pl:jge of 1.50 m from a 50.0pre(iq2 * ::lpp5ob8 xkjr3egco*x 4 a-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the ma nq jgj7ca784rgnitude of the electric field at the locatijn7rqc a7 84gjon of the test charge?

  A 5.0-C charge is 10 m from a small test charge.1bh8 r yo2)/c-q bec0dr6 nhmj What is the direction of the electric field?d20rnm /8 bhh6bey ro-)jqcc1

  A 5.0-C charge is 10 myl vttkv 8s;pf+(c -/k from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at thevk/v -t8tsplfk(yc;+ location of the test charge?

  Two point charges each have a value of 3.0 C and are separa pkem 9b8gh)pk5vd2 ;hted by a distance of 4.0 m. What is the electric field at a point hbgp)kp;dmk289he 5vmidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter5 ibelb5w50fe ,( py9qooc +1cd( iv*7omykur stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field atyi qwp5m d5lb u+o vkc 0o b19oi*,5c7e((refy the 30 cm mark?

  A 5.0-mC charge is placg9 aga3,u .wyced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whata,wy 3gac gu9. point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7,rlq ngg,b4 7c.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elerb,,n gqc7g 4lctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of mnm5m(ko4+dfek k (2 ia square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field+ fd( noekm mik4km5(2 at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corn,.) mrmze 1ez:ug:tk,3txd v6cy3syrers ox dt36 1e:y,tezk)3. mr s,ymrvcugz:f 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 the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it cc4,o. koz. ut1ap5pkis placed in a uniform electric field. What is the magni4 oka ,.c5p1tzpcok .utude of this electric field?

  A particle with a charge of 4.0 mC has1r)iz 8 q nv5padk+oj/ 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 wa ldw5x9,,0dot tp 3anfr n2:in an electric field of 6000 N/C pointing downward. Wwdf2x n p0ol,a:w, n dra953tthat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a/auzv nrl)90y charge of -2.00 nC. The ball is placed inside a uniform electa0ylr9zn)v/u ric 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.yymf5/ jbx f7*v6g2xh0 mC. What is the magnitude of the electric field 5.0 cmff7my2 6j 5 gyh*/vxxb from the sphere's surface?

  A metal sphere of radium fndbqm -+,tg546g fos 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of tmt64g +q dfom n5b-g,fhe sphere?