State the law of conservation of electric zu.phsie)e p e,/k+5ocharge.

  Is it possible for two negative charges t7 m 4o. 8e8 qkjtyzp(1sshrj(go attract each other?

  Is it possible for a positive ano)tq4+;r /fb ms gg)gnd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process unm r lsn4g6.uq;d4 3cz1vtw,the glass rod acquires a .,ns;4dn4 rgz1qwtm ucu v6l3positive charge and the silk

  A proton carries a

  The model of the atoo ;tmcp43j v7um shows a

  A neutral atom always has +fx0gfa;hm 8u

  An atom has more electrons tiat-q)6 2w.jn a( rf,;mk)a hbbpz6fshan protons. The atom is

  Materials in which the electrons are bo)eb( ydoyz/ -row:h/vund very tightly to the nuclei are referred to asyr/o-vh : (zwb/)y eod

  Materials in which the electrons are bound very loosely to the nucly6yo4 x; 92iqe-jqpc syf)as,ei and can move about freely within the iec4s62j-x o ; , payfyq9)syqmaterial are referred to as

  A negatively charged rod is bae.dej b r70e3r8f ic8rought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be ce r.d 738r0ijbf8eaecharged

  Sphere A carries a net pgui -m99cf v.xositive charge, 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 gr9mx -.icug 9fvounded. Which statement is correct?

  How can a negatively charged rod charge an elbw3fdsb chj84.s00mq ectroscope positively?

  An originally neutral electroscope ig3ku wc8m in0-s briefly touched with a positively charged glass rod.mc u3kingw 8-0 The electroscope

  An originally neutral electroscope is grounded brief( :pbfu-w9 uecly while a positively charged glass rod is held near it. After the glass rod is removed, thefc- :9(puue wb electroscope

  A positive object touches a neutral electroscopczyn29cl52j6tc5bx k e, and the leaves separate. Then a negative object is brought near tt 5cln26c5 zjky 2cx9bhe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. azag dc9/z(etg .ugl-79 ariz*6x rr8 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 stops. The first ball roll6c.g(datzlxg *r-9a8zgr /i ua7re9zs 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 consw 3ac2 ;xiu+js4yn//6 maak whtant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger i +92-fwwh) 3tasy*jtosj.r)ul6wff g n magnitude ts6 wyftuoljht w )f3*- 2fs+g9rajw. )han the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are z3-2p s1c3jj(w.sy wf3rdy , bedq eu*placed near each other on an insulated table. Which statement best describes the electrosy-e u3(rf js1 qddcjye3ps3zw, b. 2w*tatic force between them?

  Two charged objects attract each other with a certain force. If the ch5sr+k-jmj0 b(ya) nfvarges on both mbjrvn(y k- +5jsfa)0 objects are doubled with no change in separation, the force between them

  Two charges are separated .qr-kbr 8ox v-;j:syyby a distance d and exert mutual attractive forces of F on each q;krry-xb :8o.-sy vjother. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thvfdarfuxnua-;5 o+ kbzt i-)nb2y 8;: e force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourtv 8ntxy52u-ko;a:f-i;d+b a unrz) b fh its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens vb2h:qv /b; oito the magnvv/ hbo2qb;:iitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What ujf bdx03nf:p0+jg vqk;x 5t.happens to the magnitude of the force on the first electron if a second electron is placed ne;tqb.u00 dk5 g+pnvf:j3xxfjxt to the proton?

  An electron and a proton are sepaxaz jwfn9k093 rated by a distance of 1.0 m. What happens to the size of the force on the proton if th 3anjw0k99zxfe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Wh9nb3y/xi 6ipdzg rvt0eoe5 8c0f: ta8 en a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 20za 8dt6ro f 0g8y b95tv i:eienc3p/x.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 equilateral triangle. Whe)l:r2btijn( kld*s k)l iec)/n a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. 2jke)rl/iclbkn:s (i) t*)dl 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 is not a fy/bshz*z 0 w1vector?

  At twice the distance from a point charge, th8l43 3pjwlvxz:zw. the strength of the electric field

  Is it possible to have a ru-wfsljkup1. 38l6sk;, a emzero electric field value between a negative and positive charge along the li ukjlf-ka;m.r68u,ls3e s1wpne joining the two charges?

  Is it possible to have a zero el v,1xcg+1tvgi qf32wk)n0halectric field value between two positive charges along the lfwgc1aq 0g,kv+ x2lh 31v)intine joining the two charges?

  Electric field lines near psitive point charger09b-vh-kc bbs

  The electric field shownwam syw;*us2ctlt . 72

  Can electric field lines in1u*qnql 4qdbm:y r7 ;;pzy p-itersect in free space?

  A solid block of metal in electrostati6ko )+ 3.us 3x:6jnrlw htbrqzc equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interrkz3njs: wxh6 ol +ub6.rt3)qior.

  If a solid metal sphere and a hollow c,pl, om+ v2vjlu,k 3jmetal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and thelm, v vkj3plo uj,2+c, surface is

  A cubic block of aluminum rests on a wooden table in a region where a2 ;j9n/ jwqq)zu3n lxa uniform electric field is directed straight upward. What can be said concernizqj ju 3qanx9;l/w)n2ng the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elefmmh8.k o* -xvozt).w(vn n n9ctric charge

  A positive point charge q71w vk h6uze9)w1hjs is enclosed in a hollow metallic sphere that is grounded. As compared to the case wehww6 1 q 7u1)9szjvkhithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductogp j,qp ccu5*;rs in static equilibrium.

State Gauss's law.

  The charge carried by one elec(z z54;lsm*iffl *bcdtron 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 more prkyk .-h,1w8 y h-lo5rqvvygn0otons than electrons does thisv8-y o.n yrwglk khhyv015, q- piece of plastic have?

  What is the charge on 1 kg of protm ue5b:1ng0k bl, c0gdm2cgb6ons?

  An atomic nucleus has a4v2 )2 yrpkmhcq1dnb haqax+j: q*4g( charge 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 f (6luuguqli1bfb y 1yl(00)kcharge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric ffygk0y(6l qllb01)u uu b1fi(orce between them?

  A 1.0-C charge is 15 m fr9j 2 kldtjtqa)-wi72nn e;uh; om a second charge, and the force between them is 1.0 N. What is the magnitudendq -tw 7atkue;2 )hl2nij; j9 of the second charge?

  Two 1.0-C charges have a force between them of 1.y(jc l p63ncomb *3 ab.4xaqso hru32:0 N. How far apart are they?

  The force between a /z7dm 1u otw7a50wr oe$30 \; mC$ 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 xako,6 r4ruqp2 z+z8g force. If they are moved to a new separation of 8.0 cm, what is the electric rua6 ro8+,zxk4p 2zq gforce between them?

  Three identical point charges of 2.0 mC are placed on the x-axec)j6a 1tkk ;nis. The first charge is at the origin, the second to the right at x = 50 cm, and tkaj ) tn61c;kehe 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 a fkqf.7.;jcjrs e z*q4re placed 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. 4cqsj q7fr; j*.fezk and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followmy6 t: ihv3x:pxlhmc.8h6qq0 ing 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 thec .:ihh:3 qhvq8p xt 6l0yx6mm magnitude 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 pointm;.mve mz* m-m 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 the force that acts on the center charge if a third charge of -Q is placed m.;m m*zm -vemat the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 (ip)xb t unf// nq83d5r l/dr9pp0fvenC is at (0, 0.10 m); Q3 = 5.0 nC is at (pf(/ulr3fb )/qddxt0 n5pv9rpe i 8/ n0, 0). What is the magnitude 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 (dc8viw js:clu-1l s4); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on i 1c-8l( :w4jsvsulcd the 5.0 nC charge?

  Three identical charges of 3.0 mC are paf)+jyyhm vacl (/8xl 8g7x l7laced 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 ogy)7/yfjlxav(lx8 7l + a8chm ne of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.:pc3wvri vn13vj- c +d0 m. At what point, on a line between the two charges, would it bep v:rciv+c3 1n-j dv3w 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 =8u53s a7jfbl;mx5agj 4.0 m. Where on the x-axis can a third charge be pmugfasb58l ax ;7jj 53laced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2nqu00 8lbcc*1 wka3xea. Where can a third positive charge +q be 0nx ueb1c0qck la3*8wplaced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total (ldk kn /0-( jjs;uksrof $4.0 \times 10^{12} \; electrons$ 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 agains*zg+mp ys 6he1t the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pro*py 6hm+g1sezton?

  Two 0.20-g metal spheres are hung from a commontt1;ut t(e0v e:rn l,9-tayo u point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the aevun et(:0yua19-lt ,;tot trngle 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 magnitude of thev3vw+q yk( q.l electric field at .vl( +vq3kyqwa distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric f8: /e:r.k5;tw ;zobif.*z wv dqr:zsb7 ue qlrield at a distance of 1.50 m from a k:lzqvwe z/o.w.8:*it:u5 ;7rdq;rebbs z rf50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the ma 67pe*8lcw shmgnitude of the electric field at the loc8eh6p7 mwlc* sation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th/)ha3gc( l pfqe direction of the electricfagpc)h3 l(q/ field?

  A 5.0-C charge is 10 m from agc6/ wk 7ryg :y4onty- small test charge. What is the magnitude of the force experienced by a 1:wg/ 6y7r4 -c yntokgy.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 5 *,g3hzfv iciby a distance of 4.0 m. What is the electric field at a point v,3 if5h*gcizmidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm 1f+3 5skj 8tkkvsm1py lmp* *umark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What klm+ *51k3 1fstk8jpmp uy *vsis the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic slzho*/h23vx k and a -4.0 mC charge is placed at the 50 cm mark. Athv *soxh/ l3z2 what point on a line joining the two charges is the electric field zero?

  Two point charges ofr 5cfj(nh2(v s +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnituh2(nf(v cr 5jsde of the electric field at the point midway between them?

  Three 3.0 mC charges areaw m.8npoufr:29l); kck+xz9iv tv9g at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at therxulzk99i:v a9 ;c vm +t2wfg8.opnk) center of the square.

  Consider a square which isx2ux wy l:ir8/ rff+f) 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). Whrfx/):ul x28yfr iwf+at 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 placed in a uniform els: .6l(gg9hg6+xdar,a va),zh p mrnzectric field. Wr.a,+)dnsa (9z6p vggh mg xra,h6zl :hat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has wc :h+j:v knzf7 ehj.3a 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 60,tnpt l.a0rd;;g eymopc;*: q ggf;;e00 N/C pointing downward. What charge must be placed mt ;:;qrcn p,t;g;eae;.l*gyd0 fgop on the ball for it to be suspended?

  A foam ball of mass qbkliq09x3a: 0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended:0aqxi k39bq l 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 the4 +lkswqoss2 92k )fij magnitude of the eleo+sk29i slw)qj42k fsctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is079hi4t72tt6:yr2z sz- ttrd z6)pncildien the electric field 6.0 cm from the centi2 etr r6t) ti 7:sth6-tz2ncl4 9i dzdnyz0p7er of the sphere?