State the law of conservation of electric cw t2rc*h(i,nu cr ,0yfharge.

  Is it possible for two negative charges to 7,l3m (i9ibujg/afki3xs8 l+bs5 qqn attract each other?

  Is it possible for a positive and a n/0jj b)m qqj-olno6u0 egative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri rytk 8lk dq0gj),qx.5ng the process the glass rod acquires a 5 lxr0 kd)j,8kq.gtqy positive charge and the silk

  A proton carries a

  The model of the atom shobtn.f m5rkyw(5i7,g8 vzpv2 iws a

  A neutral atom always has0ae1yp8ajm e0

  An atom has more electrons than protons. The azyud54z 3dxd ,tom is

  Materials in which the electronssme5 2aw6(hsv (u hdvdb11dd* are bound very tightly to the nuclei are referred tad2whs 1uvs h5e1b*dv 6dm((do as

  Materials in which the electrons are bound very loosely to the nuclei ans8k cneyef zn8f1jmwv0 lnk6vc 3g08pb 8+( e:d can move about freely within the materianf cb3(kmfnvkewl8:pv+1s8jyze8nc 08eg 60l are referred to as

  A negatively charged rod is gcyqv16r awl(2i6t7o brought near one end of an uncharged metal bar. The end of the metal bar farthest from to 21twa qy6li7vgr(6c he charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neju .4c3h c p5uk,nan 9vzf7+lkutral. They are placed near each other on an insulated table.n4j9u vczhcl p+5 ,3 kfn7.uak Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargaq3j0w h2l6p6r1gb tju,nh ;yed rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chao6mt k hnc834hrged glass rod. mh tc84n6hok3 The electroscope

  An originally neutral electroscope is grounded briefly,.i.qag f.mv j while a positively charged glass rod is held near it. After the glass rod is removed, the electrosc qagj.m ,i.v.fope

  A positive object touches a neutral electroscope, am-rwik ;4c3t yabu1r ge,ezk. c8;iq )nd the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to thwc br;reykm 1i k3ag-ci 8z q).4e,t;ue leaves?

  A large negatively charquxh/ ovk n ,on8(1kh;ged object 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 first ball rolls forward, but does not touch the negative object. At no time doe(n; u1kq nk,8xoo hh/vs either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of *4h+tzk qg qt6the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg ye. 2dv,cs1+z v3pj/twnc1lte is larger in magnitude than thcd+s l1 ,jvv3y pc.2w1zt /tnee second charge.

  Sphere A carries a net charggxgt kno 4/dp7qp+1q 7e and sphere B is neutral. They are placed near each other xtopqg4 17pdq7g /nk+ on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wi aqwf;d5 a)(bxu r3a qfl31al(th a certain force. If the charges on both objects are doubled witlr f l(aa35uxq(w )d1a3b;aqfh no change in separation, the force between them

  Two charges are separated by a distance d anqni :k.vzo4 ,h2uxu9 zd exert mutual attractive forces of F on each other. If the charges are separated by a distanzqn4vkxu :2i huo 9.z,ce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens - xq a l rhz3cv+xa1,fcdcdk 70b+n.4j6*vhzdto 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 original value?dfcc kd3.x+ ha*v0xln1+46 h qz-ab d zr,jvc7 The force is now equal to

  An electron and a proton are separated(rf72mcx) 0sosnh v/b by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electronxncrb/vh(7 ) m2ossf0 is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happe 4 ecphr9p lf82h9+eysns to the magnitude of the force on the first pf9hhepc sr +9y 482elelectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What 1w*x 9 +fxdqyp,op k+phappens to the size of the force on the proton if the electronp++xd1x9fp , pwqkoy* is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squ q)7 ;6gdmtkmkare. 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 nmk7 kdq;m6 )tget 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 triac,*k:.*i(voh h/oyc:a igk rdngle. 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. What is the magnitude of the force that acts on thekiod * o: vca(,/.hci*y:kr hg center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vect,:sx 46lpvncs w75 3ojyxml(por?

  At twice the distance from a point charge, the strength of the electrif . ht t.ioxi9tm.i5j;w4k k5tc field

  Is it possible to have a zero electric field value between a negative and posx 8v)7k3ec bhgitive charge along the line3bkc ehv8)xg7 joining the two charges?

  Is it possible to have a zero electrihg3*i6twfk +,pit rz: c field value between two positive charges aloi:,p t+6 g t3hrif*wzkng the line joining the two charges?

  Electric field lines near psitive pog;wahx8,u f 3kint charges

  The electric field shcdaao4qpgft.2mi +7k /p )z4vizx4 s,own

  Can electric field lines intersect in frek0re(yrhfu :t72o5ude space?

  A solid block of metal 1zy qxgk -6o6ivzd3h2in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interd1 qv3i-y2oh kg6zx6zior.

  If a solid metal sphere and a holltjrg *sq80,*x l y1nutow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfgt0qtjru*l*18 yns ,x ace is

  A cubic block of aluminum rests on a wh(* ui1rk.f vcooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blf1.*hrvkcu ( iock's top surface?

  If a conductor is in electrostatic equilibrium near an electric nqqb7 d5*vs2m charge

  A positive point charge is enclosed in a hollow metallic sphere that isgr w0kk8c 6wdbaww*8 h/j::m s grounded. As compared to the case without the hollow sphere, the electric field at a poinww r88b :6ks0cdhm*wwj /:gak t directly above the hollow sphere has

State three properties of conducto)t *nuqnglm f 7y)pd(2rs in static equilibrium.

State Gauss's law.

  The charge carried by one electron i4ve pp1rft-l 2s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net ch51ni8qb /g0khw(9rs1aelcz j arge of +2.00 mC. How many more protons than electrons does this piece of plastic haveqcihwsj1n1 5 9/l(kza 08g bre?

  What is the charge on 1 kg71ot;brrr1n*9i*ut ulgo hthlse 4 , 7 of protons?

  An atomic nucleus has a chaw (334bzcwjyarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, svvdl0n8 d2qz1(y rhi. eparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respe8z.0r1dvn2q (h ivdy lctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bht(z5cn0 ou itq+. +tuetween them is 1.0 N. What is the magnitzti nq +u( u05+cht.otude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far as;so zgvvbpr+1h 5 .k6part are they?

  The force between a 35nip*qjb35d/i* sth drp yd7$30 \; mC$ 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 forsj4-r0j cq3p ,ct kp-xce. If they are moved to a new separation of 8.0 cm, -xrj ppk-0qcj3 t,4 scwhat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. T2i mpjph53m j3he 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 an p3j3hmi jp52md direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC iso+ :+pc yudl m.t;ikyy89lj u7 placed at the origin, -2.0 m C t7 +py9cltkujol;8+i m uyy.: do 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 acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 b, 9c(ot2gsur 5ga v.emC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Wh .ogb9 gsuevt,2cr5a(at is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q) khiil +;--in mq+crs is placed 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 forcr;+-hn+i l-i)ci kqs me 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);7 dw43tk0 dmacusi/(9lk3oa m Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force ooamd0/d3w alc i ut 94s(7kmk3n 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 = 5g-fnt0ov7 k3w:a9 ldyy l 8-bc.0 nC is at (0, 0). What is the 9vnalyb3w lkdy0tg- 7o:-f8c 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 equilateralyzc hbv-xt.xq :5 q+oc**1v 6mm yva3p triangle which measures 30 cm on a side. 6 *1 *vmmha+tzo-cb5vp3yyxq.:x qcv What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are se/p+ e9 wk c:xmvzn72w- cjhmd4m eag56parated by 3.0 m. At what point, on a line between the two charges, would it be possible to place -mwg5ke2wjzea: /nh6+47c cdpmx9 mva 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. Where9 +t5t)wqsysbfwxp0 p7br( qwd-d )* 6fb yxj) on the x-axis can a th95pxw fp)tf y(+dqbwsd q6r*w )jtxb 7-bs0y) ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q 2-oxwqtd v+5jis placed at x = 2a. Where can a thir2x5+odq- v twjd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A w tr n4n33p9pim v(gl*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 ag+3vj 2z f4qlux v3jk6q(4nacojgh-t 6ainst the force of gravity by the attraction of a fixed proton some distance above it. n4tquv4qx63hjo (z -c362+ gvakjfjl How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondt7wlx5r/y(0f4ltff fzwmc /8at; vn+ ucting threads which are 30 cm long. Both are giwtnatvf4 5xwr;lftl78 c/( f 0 yfz+/mven 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 macx5.ym6vji xc+ue;ylu:e y, ,gnitude of the electric field at a distance of 5ei,cy,.;x6e+lu mj yuvx:y c1.0 m from the nucleus?

  What are the magnitude and direction of the electric fie0(s)wx s ywef82mf0eeld at a distance of 1.50 m from ae)2w0fesy8e0 smw(x f 50.0-nC charge?

  A 5.0-C charge is 10 m from a smally;y 9lslgb.ngv a.kh58 m:u -t test charge. What is the magnitude of the electric field aag-y yu5v;n:l mgh bk9.s8t.lt the location of the test charge?

  A 5.0-C charge is 10 m from a small tek 5h4fo pia txf7u1x;/st charge. What is the direction of the ele a5x1o47;fhfki tup x/ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnivp r415sbq mo(y 93thp vta pzn2)5e pv)y.c9etude of the force experienced by a 1.0 nC chargt3rb.c 912v ms) qp ez5ypv5(ot4n)pvayh pe9e placed at the location of the test charge?

  Two point charges each have a value of 3.0 C sb .: xe;g-idaand are separated by a distance of 4.0 m. What is the electric faeis :g.bd-;xield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick amj )snbcu,8bq+/j4 seu d2v o;. 5oxywnd a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 c)2c o5x/,nomdbbs+j;84s v .uquy ew jm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char4 jyuj7:jqh6h a 9hc ppl.ct88ge is placed at the 50 cm mark. At what point on a line j 7qpjh4aulhjthjcy8 8.p 96 c:oining the two charges is the electric field zero?

  Two point charges of +3.0 mmv+c70w ,n+k +n;(intazuh r bC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway be,a0rkbz;t cw7nv(+ inhn u+m+tween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5*x. 14 3cn3wp:kbbz qrxoe q*f.hca)t0 m. The last corner is occupied by a -3.0 k cah)*1nq4x. eo fb.wqrzbx:t*p3 c 3mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sid t ovq7tv))g8le. Charges are 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 magnitude of the electric field at the square's centergo8)7v vtq tl)?

  A force of 10 N acts on a charge oswqmw xr540 q;v*kx 3of 5.0 mC when it is placed in a uniform electric field. What is the 4; wk0qw3o *vsxxq5rmmagnitude of this electric field?

  A particle with a charge of 4.vyxg4z3.fee ;c 8q)bgja n2*k(3 kgoc0 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 map/ uwr .fh7ab9 up8m-5 soal+hss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to+fa ohh/prlw u u7asb8 59m-.p be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball isaedyjv- 80w:tcl lh)9 placed inside a uniform electric field, and is 8t hl9w-c lyd:0jvae) 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 kr6seb:s6 q7- 0 ihjohmC. What is the magnitude of the electric field 5.0 cm from the sphere's suh07k :-6bs qr o6esijhrface?

  A metal sphere of radius 2.0 cm carries zaok 9 le0r(g /j) l) dv)ny25wcjvez)a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spher50kr) z 2/lw )jyengvaclzdo( )v) ej9e?