State the law of conservation of electric ch97,u 9lj+vbbjdtru/uarge.

  Is it possible for two negative charges to attract each otherl,hekm z.xz /hl30l* f?

  Is it possible for a positive and a negative charbl/ :wgynf1d5.quqp*z6q ng5ge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod rjd 0 -nfeuce*0ko/h4acquires a positie0-f j*o4 0/ncue krdhve charge and the silk

  A proton carries a

  The model of the atom shows lgn(b9vx ,9q*til+bp *nx *xfa

  A neutral atom always has,*w5ja y/5r io+-ax7luj)5b bpta1c dh 1wvcd

  An atom has more electrons than protons. The atom ishj -z15vsuf; t ob40grvl95z elm(d7e

  Materials in which the electrons are bound very tightly to the nuclei are reffvdd/t1p42 *b3gl wd xjjx+o (erred to3(2toxf*/x d jjb 1v4g+ pwldd as

  Materials in which the electr r*un :pbhh36eoc d-y)ons are bound very loosely to the nuclei and can move about freuh 6er *cd) bh:oypn-3ely within the material are referred to as

  A negatively charged rod is bo1hku rz8;0 vj3jm cmx* luo:8rought near one end of an uncharged metal bar. The end of the metal bar farth;mj8lmx* urok1 vc3:zo0 u8jhest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They avqlmej ah :jc*5k9f,x9bk8-a re placed near each other on an insulated table. Sphere B is briefly touched w:kj f9q* vcklh xa9m bj,-8ae5ith a wire that is grounded. Which statement is correct?

  How can a negatively charged8lz zu5*r3m4*n ztgjo rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged .(lu9sp;p es0y mt0grmv;. eq glass rod. .9u; tsvs; yempg 0. rql(pm0e The electroscope

  An originally neutral electroscope is grounded briefly while a positivelsgjm,*6-mskub460fvwun wk1y charged glass rod is held near it. After the glass rfv,ssn k- * 1gku6 u0bmjw6wm4od is removed, the electroscope

  A positive object touches a neutral electrosc so9gu70 8ulckope, and the leaves separate. Then 8k09guo sl7uc a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pleq3kgatji*3 4q28hnu;fha1 y aced 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 first ball rolls forward, but does not touch the negative object.3e itg3aj yf24nah8k;*qq uh1 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 Coulombwv-uup,6o6/p0v.he- 9ea s dmc( eioy constant $k$, which appears in Coulomb's law?

  Two charged objects are separated bydq1-8zv 1tq6 s ,s6exsxgqdvv ;dux6 6 a distance d. The first charge is larger in magqvdsq,1x6s 8gv6 tqsd-v6zu exd; 16xnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near m-wxxj ; n)7p.cl7dql each other on an insulated table. Which statement bespx .m nxj7d l)-q;7clwt describes the electrostatic force between them?

  Two charged objects attract each other with a certain form wo;e- szew+*ce. If the charges on bo-w s ;wz+eo*emth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert m z6yqzmqu:rw1w / r-(phhq.t(utual attractive forces of F on each other. If the q (: yh61q-whzqw.mtr /przu( charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects 0z cnbr zdv39.attract each other with a force F. What happens 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 orib3c90z z.vrnd ginal value? The force is now equal to

  An electron and a proton are separa14*ym ulz i/+f1sjinhted by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a s*unzih j1yfi41mls +/econd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. *pms/djk) i:+ox b(j pe9w k+zhld9 r/What happens to the magnitude of the force on the first electron if a second el/)l 9(e9sjpdixkdrojp +b /wk:*hm z +ectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens tie5i05tcq a 1qo the size of the force on the proton if the electron is moved 0.50 m closer to thci1qq50 aei5t e proton?

  A point charge of +Q is p9:ug vobj:5oyznt 0+z laced 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 the magnitude of the net electrostatic force acting on the positive charge at uzvo +yj590g:zo:nt b the center of the square?

  A point charge of +Q is placed at the centroid of an equotv;l4d/m t ) xo+nk*nilateral triangle. When a second charge of +Q is placed at one of tnv4ookxt*;d)+ lnt/m he 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 1qdpg3vm2b */ay3r0om2xwf eis not a vector?

  At twice the distance from a point charge, the strength of b7 4.pdyq.oerthe electric field

  Is it possible to have a zero electric field value between a negatisufughy* 13)o/8isu lh/,fiz;v as:p ve and positive charg,)1;ashig uyolp* / ffus /iu:3hsv8 ze along the line joining the two charges?

  Is it possible to have a zero electric field value dh+scomp /5p) between two positive charges alon 5)opch+ spd/mg the line joining the two charges?

  Electric field lines near psitive plu,am1l:m p 1d*nasj 1oint charges

  The electric field sqm *yugku dr) 2(v2ln1hown

  Can electric field lines intersect in free s v/v)v94i6m. kqt6c slpk qn.opace?

  A solid block of metal in electrostatic equilibrium is play..uck 5xnb626mp ik eced in a uniform electric field. Give a statement concerning the electrp xuckibk.ny2m5. 6e6ic field in the block's interior.

  If a solid metal sphere and a hollow metal 7n e, i *f9gtd(;rkt-xtliw m5sphere of equal diameters are each given the same charge, the electric field (E) midway betweett*fkl id5rent7m;, 9- xw( ign the center and the surface is

  A cubic block of aluminum rests on a wooden table in a;* nrbu(gxr+r8mald1 to utmxh* 5,3 w region where a uniform electric field is directed straight upward. What can m5,dr b3nr+ 1o8lxhgu*t*m; xwtua(rbe said concerning the charge on the block's top surface?

  If a conductor is in elej *q-icomy u0.ctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in ak mxl jvep8 ,ta-48rh(0rr w:j hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a4 ,wk er(mpt8 8x-j0jrva:hl r point directly above the hollow sphere has

State three properties of conducs vfkphn -7:r 0u1m5ihtors in static equilibrium.

State Gauss's law.

  The charge carried by os1en)nc85. sfy+ aaw sne 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 char 9 g(;ctc 4rf/e9ciekgge of +2.00 mC. How many more protons than electrons does this piece of plast;4tcrf /gik99 c (geceic have?

  What is the charge on 1 kg of protonshk zo3f*8 k i2nv2;hhzyd)6w -uirkv*?

  An atomic nucleus has a charg,pfx pt7ti7 -(; itemoe of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepav jdjdh kfrt( //j9s6)z2r6 wbrated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between t6 6)( 9f jhjzsd/drwt2vk/bj rhem?

  A 1.0-C charge is 15 m from a second charge, and the force betwe 1cokwbz4jltf*5 c( n(en them is 1.0 N. What is wcknot(*bjc45(z 1 flthe magnitude of the second charge?

  Two 1.0-C charges have a force betw1a: wvyu f:sn -8a5twpeen them of 1.0 N. How far apart are they?

  The force between a vcb9wtj1a z63z s d(o($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience1xodno vkr2qq15qjo vf 445r- r+2p ct a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?vcq 1xd4o-k1 q52fo4toj2q5+pvr rrn

  Three identical point cr9.gcf.fgent0m6du(zzszo + 1j9 g g-harges of 2.0 mC are placed on the x-axis. The first charge is at the origin9 fnu g+ze 9dmst.g.j - rc(01z6gzgof, 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 k c,lx9dyjn4r7pt j41placed 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 electrostati ,jd1ncy7xkj r4ptl49 c force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.0 c7 0 twwkp.80zdmvxb a2nh8,+gkpku- 0 mC 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 charv g 0p n,u 7am8-0db.xkw+zc8htpk 2wkge?

  A point charge of +Q is placed at the celphc6 (ye(mch3 m5 vcb4v*7innter 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 atnh 7c6 mhl*ec ( vci(b4py3mv5 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 (0, 0.10 m); Q3 = 5.0 nC wxfu047r,ewxoe8 j3 d is at (0, 0). What is the magnitude of the net force on thex40 ,8joduxrfw7 3we e 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3v57 1iggtu i(z0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the71ti5gg zui (v net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plaamb r()d+r7wuced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic form wudbr7+(ar) ce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poj/s,o+ l rh vikg;)-wfint, on a line between the two charges, would it be possible to p i+ - hok,r/gswjl)vf;lace 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 ismv+vm co71hh,r- )aua.sv bx4 at x = 4.0 m. Where on the x-axis can a third charge be placed so vu 1oh47,v -b+acr. amhm )vxsthe net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed atwr (.a qnfgot1j,no-9 x = 2a. Where can a third positive charge +q be placed so w. ng -n o,trq(ajo9f1that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tlzovg i-s16adqz ma8g,-jc51otal 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 agjyp2rkb dtmufh;7bxp6 2 3.*gainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron;j.bd26p*b 7t3 u p2mgfxhyk r is the proton?

  Two 0.20-g metal spheres are hung from a common point tx,p52ddu z+ huf4 9seby nonconducting threads which are 30 cm z4x5s uteph2du f+9, dlong. 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 t, j 9r0wwtoc7/j* d oo+dks+xvhe magnitude of the electric field at aotjw+ok v+90 rxdow7,sj c/ d* distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.qsy5g pcg rpfp8b/i ipd,q8+2um d41.50 m from a 50.0-nC bps, ifi1p8c./d gq4d prmpqy25 8+g ucharge?

  A 5.0-C charge is 10 m from a small test xov2 bumha/ 8o7p2/bie9 :ncx charge. What is the magnitude of the electric field at the location of onep8/ 92hvx m:bu /b2co7ia xthe test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directif83tgj ppmxl 45(490re q71fjbbrtb- eer .hjon of the elecr8 r1 3(m9 0hrge4pj4p-bj.qf btb7f et jel5xtric field?

  A 5.0-C charge is 10 m from a small test chargn;aw8 i i8e3 ysgwhuksb9a fk;c5f4vx-9;7lte. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatif5;hxa-su 9 4k8gv t9ys;;lib f8wie3nkw7ca on of the test charge?

  Two point charges each have a value of 3.0 C and are se1;pstft1 kcpq mprg8hli j) w:x0((9zparated by a distance of 4.0 m. What is the electric field at a pzlwgi9hjsc:f11(0 t;qp p ) ptk8x(mroint midway between the two charges?

  A 5.0-mC charge is pui):jbz l:lja-nrmy w)0nmk1 2 j-arb z.-tl /laced 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 electric field at the 30 cm marnrz 01ajt-/ mub-:y a ))k:l-mblrnilwz j2j.k?

  A 5.0-mC charge is plaqw vw2+pme p)ah*y1of q1++9cvpws+ eced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric w2q*)vyeo+m9wsh +w 1pq +v1ac+epfp field zero?

  Two point charges ofslg,7fs*j k j. +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude o f7,lkjjsg*.sf the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners ofzhk9+82sj;x gb bonv- e+e)c b 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 tn9 e28os +cv)jzge;bb-xh kb+he square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corm3 c7 8adet7nkners 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 mkc ant8m7d e37C 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 w x(5 2xix7acaghen it is placed in a uniform electric field. What is the magnitude of this electri( ai72cxx a5xgc field?

  A particle with a charge of 4.f5divze ndh y6+z.lx+ s6wm+kxzl*kf7 x f(590 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 6000 N/C poinspr ad0r m(;.hting downward. What charge must be placed on the ball for it to be suspendhp0amd(rsr;. ed?

  A foam ball of mass 0.150 g carries a charge of -2.y t /i7hzx,gs/tp7pf 1af6sj6 00 nC. The ball is placed inside a uniform elecpfj67ptsz 7f/i 6sht/1x a g,ytric field, and is suspended 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 nf:p.y2 hyg3q the magnitude of the electric field 5.0 cm from the sphere:f.2qny3pygh 's surface?

  A metal sphere of radius 2.0 cm carries a charg y4i el4 bhhfj i8 twg3fgk-)*bh6ab55e of 3.0 mC. What is the electric field 6.0 cm from the cebbaf hh it4g8*lj-i5ywb)5k4e f3 h6gnter of the sphere?