State the law of conservation of electric chagc): 1gxf f 9kvdz:8burge.

  Is it possible for two negative chawfi(d097i.cz 2ftnsz n5 .ao wrges to attract each other?

  Is it possible for a posiihp ac((vh ,t/tive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Du)n yu-jr10ttc ;p*nriajli(. ring the process the glass rod acquires a positive charge and ly1ar rjpn0 jtnui;-c(.)*i tthe silk

  A proton carries a

  The model of the ato.cognqj qi7)g-iuoe: qfq +)8m shows a

  A neutral atom always hast)o9dh jjikfx6-/jz 8(v- j ia

  An atom has more electronsvty,mg 9dk/ .fn)h:cc than protons. The atom is

  Materials in which the electrons are bound very tigh(l j*qr2ri(akg3i*/vmvqz 6jtly to the nuclei are referred to asi/ q(rl *j(6mi zr32av*jkgvq

  Materials in which the electrons are bound very loosely to the nuclei and can mo:3w v a2b c*ew) d.afy(l+ut68os hyqlve about freely within the material are referred to l. tfb h+)ycvw*ay63 lu(e wo:8da2sqas

  A negatively charged rod is brought near one b1glw+,42zrgm.i1 i2yudxz jend of an uncharged metal bar. The end of the meta1 +igl2,gu .wxmy dij4zzb 2r1l bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pl-ia 97)*kpci4ma-s w 6g-jnj+rr bamqaced near eachcgakaw r+b- 4n*i rj-im9pj-)m6 sq7a other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope)ymv)k4vnp mrp- w u14f,k bp0 positively?

  An originally neutral electroscope is briefly touched with a positivelyzld am.l 8),nk 5o*fxw charged glass rod. The electroskz,.*n) wx f5alld m8ocope

  An originally neutral electroscope is gro *uyl2t48 (y;yq2 ebls damw-ounded briefly while a positively charged glass rod is held near it. s8 mtyu- q ;2e*yl4l (way2odbAfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Theq:bak9c9*a vtd6- yxxn a negative object is brought near the electroscope, but doesvtq96acyk :ax xb*9-d not touch it. What happens to the leaves?

  A large negatively charged object is placed on an in0y pfnpu .) 6hr9wnqvgr;d,; ksulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path follow; y69 nng.;kuvhq,rp)rf0pdwed 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 constant / yw:litp0w/e 4sqfu6$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is rz6dqs6s rz23larger in magnitude than the6rz d rs2zs36q second charge.

  Sphere A carries a net chargofgfs,/*7 n bt6 ich3ee and sphere B is neutral. They are placed near each other obgsen c of63 /hi,t7f*n an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attractsrfup y opbj57a;9 7+c each other with a certain force. If the charges on both objects are doubled with no change in separati9b;o7u c5 sppf+aryj7on, the force between them

  Two charges are separated by a distance d and exert mutual attractiba3 m2: rxhb9kps;:xwve forces of F on eackb;: 9 sr3:2wb mxaxphh other. 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. Wn8sas.t7fm 8o hat happens to the force between them if one charge is dou fs8n 8m7ast.obled, 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 dc-pt3jy;yqv0 xwq. : distance 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 -w t.:xd p3cy yj;q0qvelectron?

  An electron and a proton are separated by a distance of 1.0 ;gn 8 v djtwvjsv79c+7m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the ;s89 cvwgnjt 7vv j7+dproton?

  An electron and a proton are separated by a distance of-wq9 tgt 4mx6w 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 mwtt4m -wx6qg9 closer to the proton?

  A point charge of +Q is placed at thit9j v7sj ig:96gw1 jye 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 og:stv 1997j6j giw ijyf -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 equilatere8za+t 4qy )ch1xx-o*:zouo cal triangle. When a second charge of +Q is placed axcct :a*1uxz-q)zoo+ yoe h4 8t 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 is not a vectqslj/dryz6wkd )q1t q.gk/, xa99 yk:or?

  At twice the distance from a;giqa .2e +g1kr)xdjk;f9 nea point charge, the strength of the electric field

  Is it possible to have a zero6m6 h/clgr 59lzid,cu electric field value between a negative and positive charge along the line joining the twoi 6,u5l r 9h6g/dcmlcz charges?

  Is it possible to have a zero electr m,)huf l1f yv*s0c0h/jb, luw mv,dx,ic field value between two positive charges along the line j,, ffum0c1,dulbvywxj0l,h/m ) h * vsoining the two charges?

  Electric field lines near psitive point chargezel,b **m3c yezy4)t ms

  The electric field sh y6jcjab(ej: ;6u:gb0jcd aka s-q5-eown

  Can electric field lin7 vfj).c sq5eies intersect in free space?

  A solid block of metal in electrosta ,gwc;k ets;tv f;2w.utic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blo.;sce2wu tk ;f w;vg,tck's interior.

  If a solid metal sphere and a hollow metal sphen1+cpykjzz y-x495rl re of equal diameters are each given the same charge, the electric field (E) midway between the center and theyj- k np5 rz+4z1cx9ly surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniforxxj av7dneg5u 05e8 3pm electric field is directed straightjd053a xgn7ee5uvp8x upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium ne eqz+6fvxq*izb6rb t5i ;9o r-ar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that /oz xymk-/so2is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow y/ 2k/zsx-omosphere has

State three properties of condh34d: gm xf 8q1e/vu/fw1e1d ) nicmrguctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron y+-)y.hx +br c1v/hxt c6fm6,o xgsmdis $e = -1.6 \times 10^{-19} \; C$. 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 protonsw hn4 a6yjr.27i:mzv. vdrt j3qz,9 rk than electrons does this piece of plastr7y.2 kwrh: r dv9 qz,nt6v.4mj z3ijaic have?

  What is the charge on 1 kg exo/2h j:nj0o of protons?

  An atomic nucleus has a charg+gvczq 7 o, g9w5mny)qe 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 and -4.0 mC,3f)c9pb5hc/.r7td ls fa xr5l respectively. What is the magnitude of the electric force berpt 37h5scrf9ld 5la bf/x.c)tween them?

  A 1.0-C charge is 15 m from a second charge, and the force between them isi/8 8mzj4 wkff 1.0 N. What is the magnifk8j i8mw/z4ftude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Ho3y2 .q.i;i t+fx9cmy/j*v gptv weiy5w far apart are they?

  The force between a )fq 4d/yf9lhrhbe3 dh/4bq g.$30 \; mC$ 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 they fvuaa - *z*5dwc3iu t2are moved to a new separ v-duf2* taa3ui* zc5wation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2blu,7 u(v rsm6.0 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 acm6br, (7sluv uts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC i c4sv6z9do8-i njv q3ps 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 direction of the electrostatic force which acts on the 69vc -n34zqdp8sjivo charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC a 7,pc9kdqqprp37gh 7 ft x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude 9r7 ,gpqfd7hpp c37kqof the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second r5k+8 ia7:gnzd c)8rvjile+h point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0+hlzn cgi)8 57ijekd+8v:rra 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 nC is at yomd fq. 9l mmc+1buqws((+ih 7d )k5d(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is7loub+ f1+y( dm (mqim9w)5khcdd q s. 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);c jr3rz5k7v *edmp9f + Q3 = 5.0 nC is at (0, 0). cpmr9+frvd zj 5ek 7*3 What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at tkfd t7+t2qq.axw w8h6 he vertices of an equilateral triangle which measures 30 cm ox fq2tw6k tq .dw7ha8+n a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q ank (qka0ku h 5e6/l3j6s)j* c1pibhg/xmnh(ccd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that t0jkg/ijl a3hcc(6qe()uck ph6 x*/ksn b5m1h he 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. Whereesa*mvcrwf7b9 mr/ - du9 6:hb on the x-axis can a third charge be placed so the net forceb/ b6:-*c 97vfmh a9rersmwdu on it is zero?

  Charge +2q is placed at the origin andfvj n m ourw.8)swrcgq(5z0 8( charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thws nq 8fr.zuorj(05w(8 cv )gmat the force on it is zero?

  A copper penny has a maszgiop;,w16r hs of 3.0 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 attraction of a fxip9q rhq8 c86ixed proton some distance above it. pqch88 rxiq 96 How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commo koee7cy:5,et n point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between th,t:7 e5yco eeke 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 oejxr apg.w .f7:f+o6the electric field at a distance of 1.0. j7gxfoa pfw+e r:6.o m from the nucleus?

  What are the magnitude and 8)tw ymc5f p+udirection of the electric field at a distance of 1.50 m from a 50.uwm 8yt) 5cfp+0-nC charge?

  A 5.0-C charge is 10 m fxpfb+:l007 0:wogunr)6,k r ax u qeekrom a small test charge. What is the magnitude of the elec)0re bkq ex+g,uo6xka fw:07r :lpu 0ntric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the d5 ck5 0nja40-wqn/fc srdmgcz/k7r2 a irection of the electrkc g 0-z7j 2wannm/ fqkc55/s4a0 rcrdic field?

  A 5.0-C charge is 10 m from a small test mf/8dl/e9t ln charge. What is the magnitude of the force experienced by a 1.m //9nt 8efdll0 nC charge placed at the location of the test charge?

  Two point charges each have a hipj rb b9i/qq*8x)y7value of 3.0 C and are separated by a distance of 4.0 m. What is the ej9qh *)7/bib qxp8ir ylectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark oq7ixxz 2ca);cnfh+t 6)a i9r lf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fieldi;)q)i2 z nt6+ h xlfrcaa9c7x at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC u,7ud cg: /nuwcharge is placed at the 50 cm mark. At what point o7dgu :c uu/wn,n a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 mnh2+d jao2k2k+i r2nn. Wh2hakin2k ++o22 drj nnat 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 0.50 m. The a1zsi*)r79u:fgv o5s -fv hxhlast corner is occupied by a -3.0 mC charge. Find the electric field at thef5 7h9s frxg- s)v*z uhi:avo1 center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thplq-+6/df bzh pe;r2xj r3ah +e corners of the square as fezp j a2brhxp6f/ql ; hr+-d+3ollows: +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 is placed in a uniform el/ nvyoxie;2g4 mjtygr7e*5(gh zb 0p ;ectric field. What is the magnitude;b gv nry/ye74g2ztoem;(gi*5h x0jp of this electric field?

  A particle with a charge of sisi /d 85xt0y4.0 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 6000k8iz5e my ;5eo N/C pointing downward. What charge must be placed on the ball for it t ek;moye5 58zio be suspended?

  A foam ball of mass 0.150 g carries a charv .usxm5k gt; (c0e*ouge of -2.00 nC. The ball is placed inside a unifomucxe*;k5t.g0 us(vo rm electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radiusa :y ek9lq1phf)y bwfs- k(*-c 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surpl cq19b hf(-*yy -ak)se:fw kface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wh mhqo /1ur8-qifq2eoqh7k /8lr ;5 nsbat is the electric field 6.0 cm from the center of th8 /ibk-ufqmr72so1hqq h5;eo q ln r8/e sphere?