State the law of conservz w0n;sq pn--xation of electric charge.

  Is it possible for two negative charges to attract each ot*ljn,l hhv; b6her?

  Is it possible for a positive and a negativ, m(43smaf crwe charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassiptz ylh5. n*1 rod acquires a positive charge and .i*pn zy5l1htthe silk

  A proton carries a

  The model of the atom sho;j*h) 8ft 3p6cvqcbe zws a

  A neutral atom always hp+px k i4z(6qh*yjs1- bmfg)q as

  An atom has more electrons than protons. /k k:8-rqvp/ 4u3ndyn gazpn; The atom is

  Materials in which the electrons are bound very tightly to *lloz *u5-bzicozo2/the nuclei are referred to a/*c2b oll-*ou5zozizs

  Materials in which the electronfdu, htzavld5n,liy+ 03-q:ns are bound very loosely to the nuclei and can move about freelfuti- qvan z ,0n+dhy3d5:l,ly within the material are referred to as

  A negatively charged rod is brought near one end h))/ (oc* hmi6 qrazjiof an uncharged metal bar. The end of the metal bar farthest from the charged rod willa */hiroi(qmj)6hz) c be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placst,mp;t m;ro 5ed tmtp,m5;;rosnear each 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)scf 9cxy h1 7a:q4sjt positively?

  An originally neutral electroscope is briefly touched wft x4k--ug*lk cq. 1lwith a positively charged glkw-llf1t*qk-cx4 g. u ass rod. The electroscope

  An originally neutral electroscope is grounded briefly whb gba/9k ra+2iouc/wc3u3 uv5 ile a positively charged glass rod isaobku/rug/32c5ib3 cw av9+ u held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thed,5a v8*ug/yai as/nt leaves separate. Then a negative object is brought near tt5di s/v,aguyn/ 8 aa*he electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objec; 9b8ir k:jnbct 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 storbc i j9;kb:n8ps. 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 Couloy vma7.mv9w c0mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge 8qiev/xo/bss+ 6xb9 f is larger in magnitude than 8b/ +xb 6so ie/fx9svqthe second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near jfnvjt -yi xlw+x:qe0q4*2z / each other on an insulated table. W+j/yq xivnz2x - j*:eqwtf l04hich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. za( :q;s. b1o+hjj eww If the charges on both objects are doubled with no change in separation, the force s z1:wjo; hb(e+jq a.wbetween them

  Two charges are separated by a distance d and exert mutual attractive forcex6qp q6yf 3unl(aqz*/ nt2c.c8kmm *qs of F o*8f6qnpqk2t3qyc(aqcnl .x m*6z u m /n each 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. What happ+rb(0 9jed e6xqu8g4gpdm 91pk6undr ens to the force between themxurem419 98d p n6k+g 0edbr6pjqdug( if one charge is doubled, 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 distance of 1.0 m. What happen/nyyjv6 64szg8i )z lzs to the magnitude of the force on the proton if a second electron z)lyji6zzsv6 4y 8n/gis placed next to the first electron?

  An electron and a proton are separated by a distancepcv 8i,j;it4iq+ lo5 ;fa5rxc of 1.0 m. What happens to the magnitude of the force on the fjcc+ai v;, 5o4l ;t5xprii8 qfirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.ykjbc/1 m5e2mz z-nn 9owl -7p What happens to the size of the force on the proton if the electron is mo-nbmemc2p15 9kyz7o -z/ wjnlved 0.50 m closer to the proton?

  A point charge of +Q is placee6q5vc(cq rr.h-avs.1e f h(efy +rffm62l 2md 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 sff .eeq(r fmavr-f6c(6 q2+.vy5hch2 m lr1e 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 cexx+; fm 1ui6zw1fry+e ntroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vermxfr1yx z+1eu; i6 w+ftices, 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 ral.eygy75. zv0p67+ :ofyfbt/bbp h not a vector?

  At twice the distance fre6ne;ko5l4q q om a point charge, the strength of the electric field

  Is it possible to have a zero electric fielc; smrlhrlq.4pv,qwoz(/ec 3 74 r od+u2hfv3d value between a negative and positive charge along the line jrs hrevwlz3 q4;3 f r+/o7.clud4(c,pq h omv2oining the two charges?

  Is it possible to have a zero electric field value between two*(4;cch x2eh t.ykez r positive charges along the line joiningx* ty cehchr;k2z.(e4 the two charges?

  Electric field lines ;wrnvaqj4(/r+g 7p cbnear psitive point charges

  The electric field shown p9dm))n wr*jih(s 5em

  Can electric field lines intersect in free sp2tfzujtjsc7/5crc )3q - o.uj ace?

  A solid block of metal in electrostatic equilibrium isvxfgvmu* s5;rh6m 5yb/e( f n/ placed in a uniform electric field. Give a statement concerning;r5m n*sx6 hv b(5fu/ vye/fmg the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphey,u9td- ls 4svubc6o8 ce9n4xre of equal diameters are each given -o4nscc sbdl yt,9x uv8u469 ethe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a eroze. v 52/xwdc,p* g. gk3rpwooden table in a region where a uniform electric field is directed straight upward. What can be said concee./o 3gr vp5g,rd.exp*ckz 2wrning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrif idid3..j omd6i*jkw-k db)5c charge

  A positive point charge is enclosed in ;-oxd( 87c1cnakj0 ty wvtf; oa hollow metallic sphere that is grounded. As compared to the case without the hollow s woc1; f0v8tk7yj tond;- (axcphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriu7) m c:hhnq)5lelg9jkm.

State Gauss's law.

  The charge carried by onezq(-h9h uf jx4)a5 dpo 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 prb,l odf6v)8 mC. How many more protons than electrons does6d po8 ,brfvl) this piece of plastic have?

  What is the charge on 1 kg xtmkasn kncsl0( +435*.mwlz of protons?

  An atomic nucleus has a charge of )pmfnj cvklr;b7s1 82$+40e$. 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 ov voh 9;d6kq+2.0 and -4.0 mC, re9oq+ o hk6vd;vspectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chlig*5agdaba 6.)a7 jaarge, and the force between them is 1.0 N. What is the magnitude of the second charge?j)lda5*aa a.bag7gi 6

  Two 1.0-C charges have a force between th+ hkhphaib, .+5 f1okrem of 1.0 N. How far apart are they?

  The force between a 0tslh 37bzd 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 1.0l6asj52 jpei 8-N force. If they are moved t as5l82jejp i6o a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axiszs 9ycpl1fz ut2s 252n:hzda1. 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 magnzau91 cd5ys1n s hz2pz2: tl2fitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are plac1+in 3o4sk2a b ayg3q,h.el/h rkumm0ed 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 electrostatic force which acs3akbo. 10 24m/,l 3+yhmeaqhnrkguits on the charge at the origin?

  Three point charges are located at the fof.,5c 7olr ahbllowing positions: Q1 = 2.00 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 forcel7 b c.5r,ahfo on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second prswo-b0/xa hnzot) 1*(l2y)mj3xdtm oint charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on n 1a0h*xs- (rlmb) wyxdmtz3/o2ot)jthe 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 (0,l ydm)d5i), i3sta(hkqfr8 8hxj 7zb 4 0.10 m); Q3 = 5.0 nC is at (0, 8 xdbz4y) drhal 7mq(i,i)5th3k 8 fjs0). What is 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 i)ltn8ofqa,l 36z/dn+1: bzlkt, mnhh owz 71f s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). w7n llo+)8m h,n3,1t znh:o bf /z1d6a ltqfzkWhat 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 of an equily t)nx0awd-says :a)rl..gm .ateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts o.n)). ta:ws . xdyy0sramga-ln any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wh9cfpzb5hb /e4at point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it p5h 9 4ecbb/zfwould be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where 1de n-o.pm qbive8a3sq0gq5) on the x-axis can a third charge be placed so the net force on it b o)n0-s aqeqm85 .eg1pdvqi 3is zero?

  Charge +2q is placed at the origin and charge -q ih63+c/dcy jvrctiun)-ghys+, j0-l p s placed at x = 2a. Where can a third positive charge +q bci- cjpy hnr 3yvt+h ),-6s0/gudc+lje placed so that the force on it is zero?

  A copper penny has a ma;f srtz -r: +cd.muu()/ncgysnhex/4ss 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 gravps,pu2 .e5 oqmity by the attraction of a fixed proton some distance above it. How far abp2m p q,eosu5.ove the electron is the proton?

  Two 0.20-g metal spheres ar*p61u adtha c4e hung from a common point by nonconducting threads which are 30 aha*t1 6cudp 4cm 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 2:k2gc4;3xpnd8yd;,dt sd+arcev 4nm l.c ydis the magnitude of the electric field at a distance of 14ad. d3ndk 2;2ccdt8meyxr,gn 4 +y:ld ;v csp.0 m from the nucleus?

  What are the magnitude and direction of the electric field ag(,td-jxbw5l a1vb o/t a distance of 1.50 m(15bd ,olvwgx /-jt ab from a 50.0-nC charge?

  A 5.0-C charge is 10 m fm6 a9vufqe9l +rom a small test charge. What is the magnitude of the electric field at the locat+qfle9v 9uma6ion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whatseu9yx6 (r)fy is the direction of the electric field?6fu9eys)xy ( r

  A 5.0-C charge is 10 m from a small test charge. Wh/bt7 nsc.7on7el+v x;8jh8k kuov l0pat is the magnitude of the fosn8j kocp+/x0eb; 7k8vol u7lh. 7 tnvrce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by wm,jaiz8zs 9h 8 )vqhpl4wx*3a distance of 4.0 m. What is the electr,38w)w9qvp*a48 lhj z mszihx ic field at a point midway between the two charges?

  A 5.0-mC charge is placed aty5j tx7 a6wnza 6f-0gi the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electricznif5j- g0 6 a7wtax6y field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mp/a0wchf6 m.c ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line/m 6c0f .apwhc 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 m. Wh)ohk zjy;nwub;2 2n 3hat is the magnitude of the electric field at the point midwa)n n;2h3khyb z2ujw o;y between them?

  Three 3.0 mC charges are at the three corners rzz qj(qj4n:,zg6u4 j of a square of side 0.50 m. The last cor4n(qj, zrzju6j z:gq 4ner is occupied 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 side. i h/jf,zs0qc) Charges are placed at the corners of the square as follows ,f)/shzcqij0: +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 unif 45e wsw)f;7qq2nvwg zorm electric field. What is the magnitude of this7wv4)fqze nqg 25ww;s electric field?

  A particle with a charge of 4.0 mC has a mass ofp3ypm (m rv-y. $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is l./uyg3o uqd;9nghw* placed in an electric field of 6000 N/C pointing downward. Whag/h ;n9g3yud.lwqu *ot charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plac+w0cu,;xb4f 3rs igwced inside a uniform electric field, andcwxb3 04,wugrsfi;+ c 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)*8 lfcp4qvzj nh874vozak j6 a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface?v)8qhpnljzz8v k4* 7 fa cj4o6

  A metal sphere of radius 2.0 cm carries a charge of 3o 3i:bj;y 6njoucg )k2ag eiohl)+* r2.0 mC. What is the electricyuajn: 2 ;joboe i2g*koglc hr3i+ ))6 field 6.0 cm from the center of the sphere?