State the law of conservation of electrie+52ykjs wn1y (r n2f8gwf8mnc charge.

  Is it possible for two negative charges to attract eachox 3b*43qasumqs (0c v other?

  Is it possible for a positive and a negative charge to attract each oth78gcf vu:cc .i8n uvuch11z /p (vw(xeer?

  A glass rod is rubbed with a piece of silk. During the process the glass rod i0qzl49h 1n4hufd ya- acquires a positive charge and the z9 u dq-hl01if4n4hya silk

  A proton carries a

  The model of the atom sojs9)hbvyw /,ody/ n1hows a

  A neutral atom always hsn4kr6j3 fp9q+me wu 99,phtgas

  An atom has more electrons tha5k+d jt *imcenp,)uvjf)h nyc) :,)f bn protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclein+a2b o xebyk/,s,3ec6c n92nlxj3j .anuvo * are referred to x ayjs 2xb cnj*cebuk3nnal v.n6o,9e,o+2 3/as

  Materials in which the electronmm7c p3nu3vi(e*m+p5;sh zrk hr7 w- fs are bound very loosely to the nuclei and can move about freely within the material are referred *rm hksum 7n57h3cfemri(pz -+vwp ;3 to as

  A negatively charged rod is brought neaz0xcp *ry589 cjn0 dqrr one end of an uncharged metal bar. The ezc0jxr 0rnq8y pdc*95nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive ca t .1n-jf5n ni:h7oaqharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that iso:a7nn1 a- hn.tjf5qi grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivncm0h b9:e9q1j d:z aw2fxh57am c7h mely?

  An originally neutralx;qa + qqcf5l27-m7mwp a/tjb electroscope is briefly touched with a positively charged glass rolfx+;2-/q qt7a pa7c5wb mqjm d. The electroscope

  An originally neutral eleob;i)p cb. w(f1,m cd(iu0m tuctroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod iob if0u d;ict c)mp(w,(bm.u1 s removed, the electroscope

  A positive object touches a neutral electroscope, and the leavesjd67.yp g*vkod1 yba0 separate. Then a negative object is brought near the electroscope, but does not touch ib*0jd 6ak.do y17py vgt. What happens to the leaves?

  A large negatively charged objecx rtr /u/*6hfxt is placed on an insulated 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 followed by the first ball, strikes the first ball, and stops. The//ru rf hxxt*6 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 tj rsyhmc:d9r-y;* y.f he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sjppg whqd; k- ,pymyn49vo 7:phn 19ssa9b6:aeparated by a distance d. The first charge is larger in magnitude than p9sa,yb69;4sk :v17whn:hao np d p-mjyq9gpthe second charge.

  Sphere A carries a net charge and sphere B is neutral.- f ;t0x9g.n9/ hoxuascmcp4y They are placed near each other ontp4 ha-9cgcu/ym ;.ox0s 9fx n an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certaojwsz,2t01x-ddcy qq bka 101in force. If the charges on both objects are doubled with no cydzsokqdb010 x qt1a12 j- wc,hange in separation, the force between them

  Two charges are separated by a distance d and exert mutual att ) fomznr2hmc4q ;tff- 6s+5rqractive forces of F on each other. If the charges are setno5m4s fc + zq2mhrfr-) qf;6parated 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 t(u5h,qix1r jp2(kc8rv u6 en ghe force between them if one charge is doubled, the o i26unv j(p8rq5urxch1(,g ekther 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 xyi+wj4 : nx(/ 7a/hsnmutft31.0 m. What happens to the magnitude of the force on the proton if a second electron is pla tw3f:mt xjh s/a7/ unx4(n+iyced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens 2n 3sjer vx8zy,z-m7t.k-uk-b 8s al yto the magnitude of the forlk2 t z y7sz myn,v8rx-u3as.jb- -k8ece on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dista(xrdgiv 2vgkm8w b w+s-73w-rnce of 1.0 m. What happens to the size of the force on the proton vsb mx8k3i7dg r+gr w --(2vwwif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pla(ih7it9wm kx * z+k 8eyu-tgpdpg-/a6ced 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 forcgghw /tmy6-itpdzx+9ak 7 -u*8i(kep e 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 ce lhc79cq/(z h egkbaiv0f(sw :j(jse/25 3umintroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N7:2lhz/bei (c5i 9 kgsmhqe(f/s(cw0a3ujj v 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 d6d*d g *tu*cz*e2 utcvector?

  At twice the distance from a point charge, the strength of the ele ;4rtca mtxhl3r ;e5d,ctric field

  Is it possible to have a zero electric field vah*a;u3tw k o6xlue between a negative and positive charge along the l;6xwk utho3a *ine joining the two charges?

  Is it possible to have a zero electric fcu r,fn 7w1 *wb)emds6ield value between two positive charges cdb7 w s6mw,ern 1)f*ualong the line joining the two charges?

  Electric field lines near psitive point.q lkku+wr.fu e.j+3u charges

  The electric field showdae3dkrkd+ l/r:1 v(-dzw /k zn

  Can electric field lines intersect in free styd utdr-,*+iy py.g9pace?

  A solid block of metal in electrostatic equilibrium is placed in a unif.m6 :xppes 9lg9 dvz5; hjsom2orm electric field. v9mp; m:o l s2 ex6gs.9pjhzd5Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere o,p /ji- algn7yf equal diameters are each given jigl,-np/7 yathe same 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 u yee*1 wefe9iulr4u)au5.6hdniform electric field is directed straight upward. What can be said concerning the charge on the block's top su1l6wu )f*he5ed9.ier4y ue uarface?

  If a conductor is in electrostatic equilibrium neadd* , m glng9gxbnq9a/o10xu+r an electric charge

  A positive point charge is enclosed in a hollooppitnn4n-h/e hk0 5.w metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the npe i4h-k.t0o5n n/ hphollow sphere has

State three properties of conductors in statrv2ym1f 4dae8ic equilibrium.

State Gauss's law.

  The charge carried by ot/vk,vc;trirxxs. hbf e3v, x.i*89v ne 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 charge of +2.00 mC. How many more h7 p5dv pz7r to;-ld7bvo)zv2 protons than electrons p;z5v 2v7r-vo b7) hdzd7 opltdoes this piece of plastic have?

  What is the charge on 1 kg of u84v *z3rbyiwd 9scc ef7fp4+protons?

  An atomic nucleus hasaht:nz d-a w0djiu. zd4b.s;)2ri0 tm a 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 valuey x*,m5voo8dz;d;d(t;-m s jjz;dn xqs of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force bet,oz v m;(sjdyj;*m xodd; tn q85zxd;-ween them?

  A 1.0-C charge is 15 m from a sekc/c p/1agyy42dne c r6i6o 3gcond charge, and the force between them is 1.0 N. /6e gac6d3r y42pkio ngcc1 /y What is the magnitude of the second charge?

  Two 1.0-C charges hat ,5 f6ipzjy1kjl g+d3ve a force between them of 1.0 N. How far apart are they?

  The force between a surdq75pf l cg5j*r. ,$30 \; mC$ 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.+soht/hk bdn)at wc/l/ ; o;2e0-N force. If they are moved to a new separation dnct;ko 2h leoh;b)/t+/ /was of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on t6jf . rfjqq 6x,4gg+prhe x-axis. The first charge is at the origin, the seco +pggjxfrqfq, 4j 66.rnd 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 t9lpesl;( )qzvrr 45evhe 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 te59 vsq(rrvlepl4 ;)z he magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = ss5epn(0nuojd n;z/ /qqr) d6 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 /e;p n0sr6qz()j5nd/ndoq s ucharge?

  A point charge of +Q is pla bbx8ppqg9 oj gs.c- :r9air9:ced 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. What is the magnitude of the force that acts on b:. p:bxsrci9pg 9-q8jgr ao9the 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 is37e bvy h4abl jq17/jv at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thjve 7bqj 4 hb31layv7/e 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); Q3 = 5.0 nC is a01hxw:z j v-4h-h gxnzt (0, 0). What is the direction of thh:4xvh z0 -j wh-nz1xge net force on the 5.0 nC charge?

  Three identical charges 4 xr+dx*nx1n+n ph z8iof 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forcnr ix+x pz +nhn*1d8x4e which acts on any one of the charges?

  Consider point charges of +Q and +4Qf(pntxlv b e04,lo* /q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place x,e(/4plovq lftb *n0 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 cha lxf-;efmlx, +t43takrge is at x = 4.0 m. Where on the x-axis can a third charge 4lat let3x- ,x+ fkf;mbe placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is place4s,/ i j ;3c3 sup:nbrsy8iowqd at x = 2a. Where can,sb cr/n3iy8; j :s3osw4ip qu a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a maslbb3lb 4k)+)mgmn3a /rul 3 bjs 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 ax8c7 u(swfrn nhn74-of gravity by the attraction of a fixed proton cx8r(7 nuhnf-7wnas4 some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hungyio t:w (j-sg- from a common point by nonconducting threads which ty( j:i-s-wog are 30 cm long. 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 of the electri7zg;:qumkz pz 79tnhj6:j gea c /p..lc fi 7z7/9 jmq;gz::npz tula6heg..k cjpeld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric wc.+/s5ie:wdg pdeb sklo.k 37h +j m(field at a distance of 1.50 m from a 50.0-nC chb jsedl(k +h/k7c3m:w5 w d. igsp+o.earge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the,xj ddfxj./u . electric field at the locatiof.x.d,u jdj /xn of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of xyus.ig9p hn- the9rsa);u5 orj 2(0 xthe electric5riunsxj; epg.o t-ryh) 2 u(ha9s x90 field?

  A 5.0-C charge is 10 m from a smd1pig-, spdpu -8 -aaxall test charge. What is the magnitude of the force ep,d8adsu pp-a-gx 1i- xperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.x o n.keet935emh5dp 80 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between thee5td9xnep h km.o538e two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sp yc yr1b .l2ah3g.1sstick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30.ahpr1c 3 .2yb1lygs s cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a9hsot1ian3 t*nd a -4.0 mC charge is stio9h 3t*na 1placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +twu s7a+ec ,df wh2h643.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poduh ,t 724acw6fs+hweint midway between them?

  Three 3.0 mC charges are at the three corne7)w)zf znaf/cbfj-n9 rs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sqjz/ 97zfb- afw) fnc)nuare.

  Consider a square which is 1.0 m on a side. Charges are pp s;+cd buv8e-laced 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). What is the magnitude of the electric field at the-pudc+ e bsv;8 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unifor wff804jwndaudw;q g1r/u*t 1ua h+6um electric field. What is the magnitude of d 8j/1f1wf ;uqnw*4whd r+a6auuu0gtthis electric field?

  A particle with a charge of 4.0 mC has a ma vv+:pnx-26 y6z valkrss 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 fiel b,bk. ls1 .zwl8gc(-nm:kuykd of 6000 N/C pointing downward. What charge must be placed on the ball for it to 1k(k bk. u cbs,mg:z8lwnly-. be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 tyl+ nm0azf87vlv9n1 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. 1m0v + ln8vzft a9ynl7What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC.ekay2 3y)+v)uur7x* +y qas mh What is the magnitude of the electric f h +u)e*y+qk3x vuy)m7r2ay saield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm i,s qs:x,pq*n carries a charge of 3.0 mC. What is the electric field 6.0 cm from the ce,qsq sx,:in p*nter of the sphere?