State the law of conservation of electric chk- g9-uay+; k6ut.umk1*/ zbgtrppij arge.

  Is it possible for two negative charges to attract each otjxbh27e,)npj hib1 r x4ngpr) (hg(i(her?

  Is it possible for a posiy-pxe: .rnfvd8 co+v )tive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a c4cu 26nyxe+acquires a2c6e y uxca+n4 positive charge and the silk

  A proton carries a

  The model of the atom shows at.zd 2f fn,w /vr0z)po

  A neutral atom always r 3/gnu64 wmypqq3,pb+5sn1 vbmvb s1has

  An atom has more electront j8e-pl ++0n ijlyml9s than protons. The atom is

  Materials in which the eleq- -drry0 jsl2lh+b6 cctrons are bound very tightly to the nuclei are referred to ld+qhj byl6crs0 --r2as

  Materials in which the electrons are bo q+(y*tnbfrr(und very loosely to the nuclei and can move about freely within the materiyrtf +bqn*r ((al are referred to as

  A negatively charged rod is brought near one end of an(brd2c eg/ji.jq )0h v uncharged metal bar. The end of the metal bar farthest from the charged rod will be cha0 gjcj(hbivde ./)r q2rged

  Sphere A carries a net positive charge, a)(kvy 6 pylrj :+mrw7 ,zo+m9;ablqq and sphere B is neutral. They are placed near each ot) m qwyrk;abqm l9a6(jo7 r+y +p:,lzvher on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro;rn.fi cebe .cz zz-m) ,+hpc)d charge an electroscope positively?

  An originally neutral electroscope47iv o t we6ah5uub027x)gut w is briefly touched with a positively charged glass rode7ibux0 owtu5g4h )7 6a2wu vt. The electroscope

  An originally neutral electroscope is groundesl+-xo ,gsawfj9 9 ci:d briefly while a positively charged glass rod is held near it. After the gxsl9s cjowf 9i+ag- ,:lass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the h ge.i.unz70n4ik ,h/q (mm gm,l5xqb leaves separate. Then a negative object is brought near the electroscope, but does not touch it4 nq75.h /ighx (e,.mkmlmbu0 nzgiq,. What happens to the leaves?

  A large negatively charged object 1bggu.sr5*+ ;qlcofgb , bbn5is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A sec1ubfbg b 5l ng+bq gor*.,;cs5ond 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 Coulolcz4tsl1;q,wny9kw1 wsloxz b6 b/-7mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by j;g 3b(54 9 dkaktortta distance d. The first charge is larger in magnitude than the second chak5 4j3k tdbgtrta9 o;(rge.

  Sphere A carries a net charge and sphere B is neutral. Theyzbvu7g 2e-ws0 *dj9is are placed near each other on asv u0wjieb2dsg7z9 - *n insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charge;7k .y1 ( 7q :jwhl7rogly em*kumz+hts on both objects are doubled with no change in sepaymh( t1me7kg .lq7 k:wrlo+ 7u*hzj ;yration, the force between them

  Two charges are separate tzo+uk9*e +p(nz (so3r:izy hd by a distance d and exert mutual attractive forces of F on each other. If the ch +kzzuno(r+zph i:y es t(9o*3arges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each oth pao+lvl9;twfv/kn w uez:5 35er with a force F. What happens to the forcpvv9uewl55zlw 3; a:ntk+o f /e 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 original value? The force is now equal to

  An electron and a proton are separated by a distanug9ry.mj-g 25wdm3k km 9(lcece of 1.0 m. What happens to the magnitude o-rmld23e k9uky m95(w. gcm jgf the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a9s y,5v3u/hbltmkxhtjc vd(v v,o 43- distance of 1.0 m. What happens to the magnitude of the force on the first electron if a secotc vhv,h /sk(v3 x, tvbj4l35yudm9o-nd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.34+,okp 51pqct xvy 5fr 0xbcmb6j7ub 0 m. What happens to the size of the force on the proton if the electron iskc jxxtb,4r0o51+m3p65vub byp 7fcq moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center(g8roo3h a (zp of a square. When a second point charge of -Q i(h8ogaz p3or (s 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 the center of the square?

  A point charge of +Q is placed at the centrot+djyg d/ufuti6k 0 v12, k,ddid 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 N acts on it.d j,y uf dd/t+v 0u62,t1kidkg 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 nn/0ce*vm emlcko..v9w yo +-iot a vector?

  At twice the distance from a point charge, the strength of the electric fns).5k.al, y j1gq3 1fzstzx/rtp hj:ield

  Is it possible to have a zero electric field value between a negative and positib:4iprnvh5:ya2b,td s u kgg3p6e/+yve charge alo yang tpkg 2bpsi3r:u+e4,6y d 5v:/hbng the line joining the two charges?

  Is it possible to have a zero electric field value between two ha78oemmtjcz, (ys 4 )positive charges along the line joining the t 87 o,atmjscy z4em)(hwo charges?

  Electric field lines near ps fn0j2 ohlj 3a2-j2k4afw6muaitive point charges

  The electric field showk*,e5rjg-9 u6d fgqun n

  Can electric field lines intersect in freumxj-z e9r+24nugvx -e space?

  A solid block of metal in electrostatic equilibri,p767i hz cr w6jql2pq4yatyiw ba52l+dm0x5um is placed in a uniform electric field. Give a statement concerning the electric field in the blocpw5y6iiq7qd+mwba6 4r75jly ct p 2,zh0ax2lk's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamh76svc /gna 8meters are each given the same charge, the electrca/8 n6gvsh m7ic field (E) midway between the center and the surface is

  A cubic block of aluminumswz6svk/ q l8m q+;4vt rests on a wooden table in a region where a uniform elecvq; q846wl kzvst/m+ stric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrm2he72l8 w wvv,dah8p ium near an electric charge

  A positive point charge is enclosed in a hl.8in irs;n8czp *yj-ollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abov lis *-p nj;88cr.nzyie the hollow sphere has

State three properties o kff)e:u:1edx f conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is etjoxc dg6- 3+3wbqq 4$e = -1.6 \times 10^{-19} \; C$. 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 pro()0 dcjdd 3rm)dk *qkctons than electronsckkdc)djd*3m d()r 0q does this piece of plastic have?

  What is the charge on 1 kg of proxd9 cjn9gc+r( tons?

  An atomic nucleus has(u6 zg9esmbgph35-hw9 r9i obxl,ce/ 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 valucqdi: tsoh )04xt8y +res of 2.0 and -4.0 mC, respectively. What is the mag0chidrq +y 8t4s o)tx:nitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charr5djq+3z ws1beg;0 wbhb fag;jn34* xge, and the force between them is 1.0 N. What is zgw*gqbn fe+ajrj53 ;x shw;13 4b db0the magnitude of the second charge?

  Two 1.0-C charges have a force betwwb1l4u;c 1ctfeen them of 1.0 N. How far apart are they?

  The force between a b(grasu8rmw * z d6*7x$30 \; mC$ 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 forcl(0:i )tzjcp qe. If they are movedpljz cqt):( 0i to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 m /jrukd4m6,u6 +t-hdf+l :fm0a tygrrC 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 foudtr6fu,y0+-rjf rgd lt a6mkm4:+h/ rce which acts on the charge at the origin?

  Three point charges are placed dte ,+8 +ffwur 2lymtv,s7ahx ib)7t2on 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 marktmhe u+fr2lb,t,+ad)f y 2 7 iw7tx8sv. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posiwje0/q; hvl 6ttions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q h/;60ejqtwv l3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point cu4nhclr : rev 4276gbmi7r kq)harge 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 thecr g :2rrbqk euv l764him7)4n 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 (0lw.f:li2kin1u x )1/urac:ox , 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the netknxlf.1 olwui 1:a2iux) /rc: 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);xvg5or)qboy(iw9 q8keq * 2)-radq) j Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC coq))58 kw y-9)j doqxbrg*i2(ev rq qaharge?

  Three identical charges of 3.0 mC are placed at the vertices of anz43 zmha+t )gwts4o9l(8e cx a equilateral triangle which measures 30 cm on a side. What is the magnitude of the ele(a84xzo3cgs w4zet+9tlm ha)ctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3xph85odg hx4kg4 z5 r1.0 m. At what point, on a line betweeng 5khpxo g8 1x54hdz4r the two charges, would it be possible to place 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 is at x = 4.0 m. Where on 1e 3c/t ug)tx.qn pza2the x-axis can a third charge be placed so the net f1)g cet p/ant 2q.xuz3orce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x 2:*0eaq76b3eobws;hl( 8yh nj9wfh. ljssob= 2a. Where can a third positive charge +* h sqbjhhwl(8bl n 7b:0ewsfj2os;3y 6.ao9eq be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. u* lff p,asf7,8tun: ir0o; ,k x9apmb 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 attrnn :ge8c(sx.jf)s8h q0mpyb,/ohz*laction of a fixed proton some distance above it. How far above the electron ic)smjsz l/nxh80gyo.*p :ef8qbnh,( s the proton?

  Two 0.20-g metal sphere/g/ gdqr n2kd)s are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsionkd )d/ qn2g/gr 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 elec/rhd7lxg- 8ew tric field at a distance of 1.0 e7rdx - wglh/8m from the nucleus?

  What are the magnitude and direction of the electrii f+ib7o8ticdku(:u0 gz0k9s c field at a distance of 1.50 m from a 50.0-nC chargcki:dtk z8i ib9 gs0f07u +ou(e?

  A 5.0-C charge is 10 m from a-+a og ;sd.ayc small test charge. What is the magnitude of the electric field-oay. +csg;ad at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thi* ;u) sv a9,uezrhl71til j6:y 9b5gd b*urpqe direction of the electricv * 9atrjr:pze6,ylh9 5b) gulq7bs ;idu*u1i field?

  A 5.0-C charge is 10 m from a small tee*j9 (yv7 hidsst charge. What is the magnitude of the force experieyh vs7die*j 9(nced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3ejrx3vui/w3xw /00u+ widls 3 .0 C and are separated by a distance of 4.0 m. What is the electric field at a poinx /dw3i+33wew0lvj/sxi0u r ut midway between the two charges?

  A 5.0-mC charge is placed at the 0g m5( eup4emvd; s-bm: cm mark of a meter stick and a -4.0 mC charge is placed atm54-e;m (pmv ug:sbed the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is place/+h9yzr0vmf+u 5*gmjy:r w led 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 jvm5/f*+gr0 9um leyrzwh+y :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.ppk kv+d7/wam, )w9i8rj0rij*4ns z m What is the kis+rvp7r *mn w, )0p awkj jizdm94/8magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners .o:d: ln l+dhmof a square of side 0.50 m. The last corner n .:omll+ ddh: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. Charges aremc.*5gxi)hpjn ycun/ t.x, i- placed 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 magp*m n5ntc jiuhi.g)/x, yx.-cnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5./eb g mg5tv84d0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fie4vgeg5m8b t d/ld?

  A particle with a charge of 4.0 mC /a n ns1-vqxt nq(-*rohas 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 r 7b/b*gtgop a7r4q tvo(0/v g,suvy3;c- efp.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it vg7spq b*t30b4 rv /top,gf7uea(g-rocv;/ y to be suspended?

  A foam ball of mass 0.150 g carrt0y+2a7 czhp8t/ hlfnies a charge of -2.00 nC. The ball is placed inside a uniform electric field, an fl+2hapz y0tc h87n/td 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 aa ,lnsz4 l;0q/pd2w by charge of +2.0 mC. What is the magnitudeal2ypw;d / lz0nqs4b, of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of rad5nvhe f/m.h bqnqb3:v 5qv)6zp80 chpius 2.0 cm carries a charge of 3.0 mC. What is the electric vph n.q m5h05)/vvqqbc6ben3zhp f :8field 6.0 cm from the center of the sphere?