State the law of conservation o s+f:0nns: ;bqsuc ve)f electric charge.

  Is it possible for two negative ch+04ghvf3 ze 8sy :ojnparges to attract each other?

  Is it possible for a positive and a negative charge to at,iwbied d;v* /.lak/( j0bbte+fz jb,tract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassq 3eyuyu flo2;kb5:/l rod acquires a po3e2ly;ukf5:u y bqol/sitive charge and the silk

  A proton carries a

  The model of the atom (h uj- ,z8e; s8suwdgtshows a

  A neutral atom always halg3 fped 2fz60;rz l,6(pxkxzs

  An atom has more electrons than protonsnnb it0w/zm)b6l .ff(. The atom is

  Materials in which the electrons are bound very tigzn(t6,j. mebfw tw() whtly to the nuclei are referredjz(.bw ,ntwt)w( em6f to as

  Materials in which the.psu ey4qs xd:s)x7z* electrons are bound very loosely to the nuclei and can move about freely within the materis:*px yqsz4.xs ed 7u)al are referred to as

  A negatively charged rod is bro-h7 xn3, 5hnb1ttm weought near one end of an uncharged metal bar. The end of the met tx37 ,hhn ewm51ton-bal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphkuy r gn/6(b+were B is neutral. They are placed near each other on an insulated table. Sphere B 6 bg/+ r(kuwnyis briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an inq):ofsk:s/brx+33 v hdq -x electroscope positively?

  An originally neutral electroscon;9xx5oh cp)bedfs1 az;x8o0d2d feq n/w62q pe is briefly touched with a positively charged glass rod.1 ;sep2)qh8zdbwx26;o 0 efqx nda n/5o c9dfx The electroscope

  An originally neutral electroscope is grounded briefly while a positively char(o/uo at: nnea51 h-s iaqir me3d6+c*ged glass rod is held near it. After the glass rod is removed, theimuroetsnhnia/e 1oca6* 35:(+- adq electroscope

  A positive object touches a neu6sxz *r8 yfp.xtral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does notf8r.pxs*y6 zx touch it. What happens to the leaves?

  A large negatively cha7 6yp .bxrmch5rged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral met h mb5.7x6prcyallic 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 caykfex706/uei2:cpt ;*pa7 bc;t ci nonstant $k$, which appears in Coulomb's law?

  Two charged objects are separa y69 8b1khpyojted by a distance d. The first charge is larger in magnitude than the second charob h86y1pjk9yge.

  Sphere A carries a net charge anm0k:e +665xzj cq uvqid sphere B is neutral. They are placed near each other on an insulated table. Which stat6mc+q0k65v:iuqz x e jement best describes the electrostatic force between them?

  Two charged objects attract each othlc2d;g/hmqq ;4ewr1 *s kwu0v er with a certain force. If the charges on both objects are doubled with no change in separation, the for/qdk*v e2;l4w1 ;whu qm0gcr sce between them

  Two charges are separated by a distancea(cjy/m1s. p( kid.s:ofln 6 r d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, whldi. ofy as. (psm1(n kr6j/c:at are the new mutual forces?

  Two charged objects attract each other with a force F. What hax q(nmsfx 0factgdpk:8; 6v 1)yln57 uppens 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 valuek f6 5;cvn7synf0t: ( 1m )ulgxpx8adq? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens t fb xuvqgi)lntb-1 ima1*1- ;po the magnitude of the force on the proton if a second electron is placed next to the ap) 1ii- mfb*u-txgl bv1n1q; first electron?

  An electron and a proton are separated by a distance ofx3u-geibbz386i./2yettehf9. rmm t 1.0 m. What happens to the magnitude of the force on the first electgiym e98b ./6ef x2-rt.he3umz3titbron if a second electron is placed next to the proton?

  An electron and a proton are sepamc* mw o2jovokuk):f j(z2gj9 p;9. (vxgz1 xtrated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protok9(z9o tmzxkj;) f. v x2*jjv(m opg:gw uo21cn?

  A point charge of +Q is placed at the center ofatgg z yh6c4tf1sj-; 8 a square. When a second point charge of -Q is placed at one z8a;t - y1gh4ct6sjg fof 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 centroid of an equilaterr* zm/go3g.u5vxvg )fcw dk,5al triangle. When a segv3durwzg5*k5)c.gv x fom ,/cond 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 of the other vertices?

  Which of the followingt4d s8t2z-y*0wkwg jo3ax5t dh0h vv4 is not a vector?

  At twice the distance from a point charge, the strength of the euktu*4d/ )*d 8aio/7ezpkmsy lectric field

  Is it possible to have a ze*bqj2 am6d 4jiro electric field value between a negative and positive charge along the line joining the two chaq4m i jab*jd62rges?

  Is it possible to have a zero electric field value between two positi smk4j9u. aqizgzh 5d ; 6h0c.rnaf;a;ve charges h;k umn9 .540zq.zafcj;6 dhgsria; aalong the line joining the two charges?

  Electric field lines ne ;vrps-;2h6c g ayu0-gy +)mur qeruz-ar psitive point charges

  The electric field slxcs+ssuz wd-(y ab *r vm 439,n(mgt.hown

  Can electric field lines i(7vt ;ffddqu-i )b n.0wbut +entersect in free space?

  A solid block of metal in electrostatic equilib4 va5;g; fk pgjxaug.8rium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inte gpg5u;a ;x8v.4j kafgrior.

  If a solid metal sphere and a hollow metv 8lt(gp2a4u hvw8 /*j.xu7in gec4k sal sphere of equal diameters are each given the sa (i 8juptwla.*vx4gh/ 8u7 vkncg es24me charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unix1h,vqpn*y;oiex a;h h 8w9yc +z -wh2form electric field is directed straight upward. What can be said concerning the charge on toen ;y ixw- ;h*+ph82 y xaqzh91cwhv,he block's top surface?

  If a conductor is in electrostatic equi lbk) d65j,*ixgvr) aslibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grout:-;+cn l:i3cnrfjiy, wh o ;unded. As compared to the case without the hollow sphere, the electric fifty,jclin:-+n:o u;;iwh c 3reld at a point directly above the hollow sphere has

State three properties of conductors in static equi-ec ct4,5p2wvire ;yblibrium.

State Gauss's law.

  The charge carried by one elahk0, *nj2 vh s-crwqg, nu9;mectron 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 protons t8tte9w w0f y1hhan electrons does this piece0htf wt8 ey1w9 of plastic have?

  What is the charge on 1 kg of )xy 5*gxbbcvkdje93+w6 fx9 yp /ic 7mprotons?

  An atomic nucleus has a charg6:nnzy1w lm;g3ych 7pcm2 v6 ve 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, haz 4,dmp)x;pcjs/ hbnl35rx5,karz9 e+l;j ztve charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric formj,zdl/ ;,b)tazks h +pe93c54lrjnz5;p xrx ce between them?

  A 1.0-C charge is 15 zbft+w 0l b,ch:*t uja3kbrpb 6vzu7z -xu35)m from a second charge, and the force between them is 1.0 N. What is 6j*u,ztcr-zl uh7p+z0ab3bw:fkxvb ) b5 tu3 the magnitude of the second charge?

  Two 1.0-C charges havla8*lr ym.1 ;as xfga0e a force between them of 1.0 N. How far apart are they?

  The force between a *sk,ofmw.ys d (r x;w0$30 \; mC$ 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 1.0c h95a(c p b/;avpumi*ued6+w-N force. If they are moved to a new separation c*u eub69pma;c/v (a ip +w5hdof 8.0 cm, what is the electric force between them?

  Three identical point charr nv,0eko+3nxges of 2.0 mC are placed on the x-axis. The first charge is at the origin, n3rx,ek0o vn +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 acts on the charge at the origin?

  Three point charges are placed on the x-ax,c 3+l(2k 6vzxt aza5d ryh+ohis. A charge of +2.0 mC is placed at the origin, -2.0 m Ckh(z+ az23 dt,vxcry6l+a oh 5 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 located at the following popq;l*,j y21gx;tsix vsitions: Q1 = 2.00 mC at x = 1.00 m; tg;,sql;2j 1*v xxy ipQ2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and *:w7k kti3vc if7tbmybz5,v7a 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. What is the magnitude of the fz7tbtw , icik:v377kmy*5v bforce 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 lcq:xjs52pz ;fdwsr* +n(nw, -hmc 2o nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargesoncfwm r:-pd sjx;cw, *(+lnqh52z 2?

  Q1 = 6.0 nC is at (0.30 m, 0) drulkbaw 8qo2/4a3/ qpdh5)j; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). 53j 4/) l82/rdouak b qadphwqWhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofzcc.u5grho(dc 33un / an equilateral triangle which measures 30 cm on a sid/duuo3ngc5cz c.rh3(e. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m.ej 2fwx(e7 b0x At what point, on a line between the two charges, would it be possible to plac(e b w72jfxx0ee 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. Wjvg np-rw 6),s tx1mg/here on the x-axis can a third cr,tj v6s-p )g mw1/gxnharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q ;limvocp, +3sr* bf8i 9uhf/eis placed at x = 2a. Where can a third positive ch ;ev,b/rflpim89+ cofs i3*hu arge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.aol8ev5g a* 8g0 g. 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 by the attr g/kos;+ b.dub+v v8rfaction of a fixed proton some distance above it. How far above the electron i;8+gb+budfr .s kovv/s the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinf imeope:va.6 pvc62w3x us*0g threads which are 30 cm lomeo6f3 p cv*0es6x pui2.a wv:ng. Both are given 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 of +40e. What is the magnitude ofy(taghv0c3 - c the electric field at a distance of 1.0 m from the nucleu( cyc-0a3vgt hs?

  What are the magnitude and directionr+ms4dva6jrp fo1lc.ybs z748s;5m z of the electric field at a distance of 1.50 m from a 50.0-nC charg1bszayj4ms ;5vp+z so7.6r mcl8fr d 4e?

  A 5.0-C charge is 10 m from a small test chargeqy t.jz9ul/x, zx9 b0t. What is the magnitude of the electric fixq0z,jt/9zbxl uy9 . teld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whahaf8l2 zs-z bpw4-c i3t is the direction of the elecap8- 34hc-zw s iflzb2tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the ml-z6lv 6tepb-.uj5/1m iz qhxagnitude of the force experienced by a 1.0 nC charge placed at the location6l-jm u-1 t xl/hezqvi.5bz6p of the test charge?

  Two point charges each have a value of 3.0 C an2jj9p5gl+h :l 6z-vfnsw ; zlkd are separated by a distance of 4.0 m. What is the electric field at a point mi:wl;9v-zg p+jz hlj2sl5fkn6 dway between the two charges?

  A 5.0-mC charge is pla5+ri d ih5 k/ibile,pt/shf-:ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the r/b5pii-i t,sie/hh: l fd5+k electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stv/hi*kvla t3 ,bw(7v+h mox8b ick and a -4.0 mC charge is placed at the 50 cm mark. At il bva*vthwb73/m,(x v k+ho8what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC it)kgjm0 ui afp6t39*are placed at x = 0 and x = 0.20 m. What is t*afig9j60k3tpuim )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 o / gm,r/v loxaz(l t.4ip1pqbu* -ki/gf side 0.50 m. The last corner is occupied by a -,z ruvlk lq/pix//t. oig4(-b*m pa1 g3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whicha-x jnif i qg(/s3nv 8l),*gkr is 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). Wh8g3)gs*ik qnnf x-v rj(il, a/at is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a 3xtst cb0xo;:a00 dwvbz3r 1+4t rmcu charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electvar :xz ot 00 m0x w;4d3bu13t+cscrbtric field?

  A particle with a charge of 4kyb w6h3ldg; yt577vc1 uche..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 ft/ 6b dqn4j9h4 lp/iktield of 6000 N/C pointing downw46bhp t9k lit/dq n/j4ard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0, nf, zma:n8fq jo,pq0.150 g carries a charge of -2.00 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 electrn8 ,,,zpjn:o af0qmqf ic field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. W ) .ni sw1pa:dpow2ye9hat is the magnitude of wdp19)nie w. s2ay: opthe electric 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 is the elec.3*hz ghulm+yl:l6 wm tric wlu m+l3:h*lhgmzy .6 field 6.0 cm from the center of the sphere?