State the law of conservation of eiosu k)gm5 66rlectric charge.

  Is it possible for two negative charges to attract each oth0x ooghmzrzy kv90wp,4- u7(rer?

  Is it possible for a positive and a negative charge to attract each othr: pm tqli8jk)q r7 e,1 /snbruf.,r+per?

  A glass rod is rubbep+wf2/c u( rn24jm m6gnl0 fdxd with a piece of silk. During the process the glass rod acquidw +2cjpugr m0 ln6/m(4 xfnf2res a positive charge and the silk

  A proton carries a

  The model of the atom shows s0hwgsp(e:kj1x rf :/x 3 ;9xigkyat3a

  A neutral atom alwayss o3bdrngn+ ;nd,clntl7 (71n has

  An atom has more electrons than protonsqkw iccs-)ydkq 6q m.jyd+-*+. The atom is

  Materials in which the electrons kj7rp upb8xu,od6h0 1are bound very tightly to the nuclei are referred to ahu0,8udj1r 7kop b px6s

  Materials in which the electrons are bound tl pcj)a;t3gatg, 81 vvery loosely to the nuclei and can move about freely within the material are referred to as1 ;tptg a,gt)lc3vj8a

  A negatively charged rod is brought ep;0*luj6 l ifjb.ep)near one end of an uncharged metal bar. The end of the metal bar fa ip jbl6jp;)0e*.u felrthest from the charged rod will be charged

  Sphere A carries a netttgmu, dpmlz:(,v xl6 jgb0 86 positive charge, and sphere B is neutral. They are placed near each other on an insulated table.g0vj mb 68tx uzmdll ,6,(:tgp Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chat6x d 4i)z0bojnqi8 ywkp+07.ukh ia3rged rod charge an electroscope positively?

  An originally neutral electroscop bbxub u3a.g2-e is briefly touched with a positively charged glas ubaxbbg-23. us rod. The electroscope

  An originally neutral e h6ib4 mzeln9qf a*/c8lectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass ro c*/il8nbheq 9zm 4fa6d is removed, the electroscope

  A positive object touches a neutral electroscopuh13z p;y r5nx+rfa:ye, and the leaves separate. Then a negative object is brought near the electroshaynpx+ ;51:r yu3zr fcope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatedq sn6.8sanhn;*kc ;pd table. A neutral metallic ball rolls straight toward the objeqsn . ; s6ak;*c8nhnpdct, 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 const3k mowaoox .0r6 ez5t5ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is9k*e,erd h8 *hdk: pde larger in magnitudedeeh,kdk*p8d :e9 *rh than the second charge.

  Sphere A carries a nexs ap.6l:9:kz+w ktldbjd 0u6)gq g 2zt charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?j g+ug p6 wz9lzq xs0l).:abdt26d:kk

  Two charged objects attract ea v8tdf wb/:5,y*f rlqi;;pl zvzt ;+cvch other with a certain force. If the charges on both objects are doubled with no change in separation,zc:,y/5ttd*vb vf;v+8 ;zpr; qwif ll the force between them

  Two charges are separated by a dijd-/b8 u;3l87m kuyi.xl dtnqstance 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 mutmnidux3l;j 8/t d 8lqy.7-uk bual forces?

  Two charged objects attract each other with a forcy n8,vd8 weur13) guccf ghuom9/8f,t e F. What happens to the force between them if one charge is doubled, the other charge u y9mt h3 nf/uducow8e1g,cgv ,rf88 )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 j76yms4 uf ;,vbo5hnbby a distance of 1.0 m. What happens to the magnsn7y uf b,b46om;5 hvjitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a pro.n ynb29z q lqo/qm (3b0i4eqston are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nextm s 4b /2n9iq.qo ny0qez3qb(l to the proton?

  An electron and a proton are se)g9k/,kbgj imfb.e/y parated 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 close) igj b/,.y/m fgb9kker to the proton?

  A point charge of +Q /yf yvo 1j,ng. mur5g)is 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 y g 15n/ry,jfvumo)g.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 trictp0:mm+b fv )angle. When a v 0bc+pf: tm)msecond 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 following is not a vecto pobc2 ct-(+nmr?

  At twice the distance from a point charge, the strength of(l5z4*(y8- zycnr jkf4c 8ztj.jhhkn the electric field

  Is it possible to have anab g,ky0zv*( eg am2q c-tle/.1foy: zero electric field value between a negative and positive charge along the line j-.*a gocy2k/0bzeqmv, y ft(e1agn l:oining the two charges?

  Is it possible to have a zero electric field value betwlu,-k 6:yy gjqeen two positive charges along the line joiniqjlkyy:, -6gung the two charges?

  Electric field lines near psitive po;n+,ujq mwvl,gh2+i-eydwn .int charges

  The electric field shown z4adlmg: vv ;:frr.u)

  Can electric field lines intew5:y y8ueid3a) qgxb -rsect in free space?

  A solid block of metal in electrostatic equilibrium is plaeuj/su. k2y f:1nv,4gixmd u:ced in a uniform electric field. Give a sta, :ifu /xvujy.:dnkeu1g42 mstement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow mejtl ou;r2fi4 1sv*s (ej2,n vz3tys/xtal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center /i(syjn3j2zs;vve lt1f2,t*osxr4 u and the surface is

  A cubic block of aluminum rests on a wof 1bmx g31taw2oden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge fxbg1 m2tw13 aon the block's top surface?

  If a conductor is in electrostatic equilibrium naldwb:m/w3j+ pc r1i8 ear an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundu np*3qy65s qp5kq-iced. As compared to the case without the hoyips53q 56ku q*qp-ncllow sphere, the electric field at a point directly above the hollow sphere has

State three properties of hdy)0+6fr hyir9thp6hufu)5 conductors in static equilibrium.

State Gauss's law.

  The charge carried by ;iqw9axpb.y9kww l:7 one 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 chargeunpp496qr ,l d of +2.00 mC. How many more protons than electrons does tn pld46 urq9,phis piece of plastic have?

  What is the charge on uy 3 n(h,3ujzjp*iu5b1 kg of protons?

  An atomic nucleus has v2j , x+2rzar9-ukur ta 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 charge values of 2.0 awv7 4 ay-ijlu6nd -4.0 mC, respectively. What is the magnitude of the electric force beiwuyv7l ja4-6tween them?

  A 1.0-C charge is 15 m from ahty:kv.39zz ne5 zb. m second charge, and the force between them is 1.0 N.zet.v 5ybmz: nk93h .z What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them0ox .w+ ou1df.ior6 6g qo-;g p5jdncm;yt yk5 of 1.0 N. How far apart are they?

  The force between a kklg u-4a.rjlqe1 u5) $30 \; mC$ 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-xw i,ld9ret gq(m6c1p ibfwq;1l*x ;,N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenxw1lfqtgw9 pic;d; 1*l,mbe(6i, rxq them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chasiou 47tw7 oa2(h:j dmrge 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 th m jds(ao7:w4 t27uohie electrostatic force which acts on the charge at the origin?

  Three point charges ar/bl/ 1m3 dw(pyvflaf7e 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 and direction of the electrostatfmv( 3a lb1/ywl7f/ dpic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mi+hz 7b0pn3wb C at x = 1.00 m; Q2 = 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 chapb3bwih+n7 z0rge?

  A point charge of +Q is placed at the center ojwjj t)/l otf*(b-qb+f 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. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-leofqj /(t+tj- )wlb *bjft corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC istuo+69y k gl9q at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fo g+otyu6lk99q rce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0),vf g-- .m5y dbvm6idp; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the diy.m 6,g-fbpdmid-5vvrection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vg887dony ai6z ertices of an equilateral triangle which measures 30 cm on 6d8gaion7y8z a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q an(. ahoa y)x:qnd +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 the.n a)qh:yx(ao 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.dpge:i)mrnqh ,6*8as 0 m. Where on erdi,:s*pg 8an 6hm )qthe x-axis 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 placed at x = 2c ,-w1m4cr 0uzicdkps + oi9m2a. Where can a third positi,pds9w uzck-1 2oc 0imr+cm4 ive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total9qbr, nx+hyb/ 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 forct/3,put2nb ps9s dn4 ae of gravity by the attraction of a fixed proton some distance above it. How far a2,tp n34t /udpsn9sbabove the electron is the proton?

  Two 0.20-g metal sphgw5/,(ki+pwy hm kjo9eres are hung from 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 angle between the threads isi(/w,w+ 5mj 9kg pyokh $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the 1/8ehb 7 oy8ol zalvm-i-hyd3 l h/p)hmagnitude of the electric field at myhoh/i1zhp-l8vybl d/e-h ao38 l )7a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at azj80 e 5ht t7nqr7c*qb distance of 1.50 qz75eb ht rn7cq8*0 jtm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small )lvz r4u93jsa test charge. What is the magnitude of the electric field at the location of the trsu4vja39 l)zest charge?

  A 5.0-C charge is 10 f9ai2nsw(e j h1+x8 ckm from a small test charge. What is the direction of the electric fieldk1+iew9(sj2cah n f8x?

  A 5.0-C charge is 10 m from a smgu/ve+b6-dlgruz dwe3 59pg7 all test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location o rl9v7p6e53gu-w gbgeu+ dz/d f the test charge?

  Two point charges each have a value of 3.0 C and are sepvc5lrtl 5w+lz*+.r - fv0fr 6ksqfic0arated by a distance of 4.0 m. What is the electric field at a point midway between the two cha+f5.vlzr+5f6-lc wkrt*r0q0 fivslcrges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -9n t1e gwar66t4.0 mC charge is placed at the 50 cm mark. What is the elen a6gt69e1tw rctric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.ty0a srrhj7450 mC charge is placed at the 50 cm mark. At what point on a line joining ah0rtr s457 jythe two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at g9rkj5pxa (/ vx = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thk/p 9v 5xa(jrgem?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. s 4) c0cscx(z5n9ab t5o *jowz-*bjfs The last corner is occzs*s0o4wjxocn5cf zstbc*5- b( aj9 )upied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sawt6 e-,w9omc2 mjo1j +ti h1vide. Charges are placed at the corners of thct9,1eha mo v12t j+6iwmojw- e 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 is placed in6qp e1hc6cu2u w89 yoogg n47g a uniform electric field. What is the magnitude of tuc6w26geu oqh1 ny g gp49c7o8his electric field?

  A particle with a charge of 4.0 mC has a ihsjr:e1t 4t:rvm(c j,)ne+ p 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 ely*hvvz w5 wr4(a c;dc+td9/tp ectric field of 6000 N/C pointing downward. What charge must be placed on the bald c p+w4*h/z9ca5t;dvywt vr(l for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placedpjcp y8hr;8yuwqf +54 inside a uniform electric field, and is sj p4q5y8cyuwr+phf 8;uspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charlrofd 94i,, prge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacdi9 4 ro,prlf,e?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What3clxbfl nw-*ks0g */h is the electric fieldsb 0h c-*f/3gl wnk*xl 6.0 cm from the center of the sphere?