State the law of conservation of electricg/a v/*v c* 8bfnj+ppy charge.

  Is it possible for two negative charges to attract eacv;-obrkmo b2f+aj6 vudj2x. 3h other?

  Is it possible for a8 jll bj7g8sc; positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gw5k.jop uux e:l0) /belass rod acquires a positive charge and the0e/u:jubew5 xk .op)l silk

  A proton carries a

  The model of the atom show cv x60c*;/ebf x kso+kallfke, ,p.6os a

  A neutral atom alwaysmc*91(s04;nt 5:cibxstmno5e47 n hl tcpgii has

  An atom has more electrons+9 k+lk07t7mw tovb bt than protons. The atom is

  Materials in which the electrons are bound very tightly to the o ;7 xy i62zfva1:y 5wnovvj:2p)kvconuclei are referred to ac7 v 2vpoozki;f6vn5x o:yjw:12v ay)s

  Materials in which the electrons are boundiy ye9,8 *wviv very loosely to the nuclei and can move aboutiwy,9v8 * eviy freely within the material are referred to as

  A negatively charged rod is brought near one end .kd4womzx0 .y of an uncharged metal bar. The end of the metal bar farthest from the charged k.moz4ydw .x0rod will be charged

  Sphere A carries a net positive.inbi9s3n td78xzsww-;1sdejd 5; it charge, and sphere B is neutral. They are placed near each other on an insuzssn-sdi1db3je;9ww xiin .t ; 78dt5lated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charz4upeao 7.(wwged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touche/szl:f s.x6 p zz24yeld with a positively charged glass rod. The eleczp./ 4s x2:ez6lzsfy ltroscope

  An originally neutral electroscope is grounded briefly whilxbcxd w7,;kp)e a positively charged glass rod is held near it. ,p )x7xbk;cdw After the glass rod is removed, the electroscope

  A positive object touches a nek( m-:ho* v dyh:tl6ieutral electroscope, and the leaves separate. Then a negative object is brougv* (o:: dlim-ehykt6 hht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is p;ba g*6xci2p,)bb dyblaced 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, bupib 2b, yb)6g;bx*dca t 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 then ,m ybt0zfrty9(l (f- Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatedt n28hsa y8i tu76wu0a by a distance d. The first charge is larger in magnitude than the se8hywi2 6a8t asu0t7uncond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed2; 6adu hlwlz6fe7e3:uii x; a near each other on an insulated table. Which statement best describes the electrostatic force u3 aui76zle ;26fd i:a wxh;elbetween them?

  Two charged objects attract each other with a certain force. If the chargk 4wh,hp1 :yj 2d7qgriu 2/dn5zvs,o yes on both objects are doubled with no change in seyn vipo 7w2s2:hh1yz qd,jr5g4d /,uk paration, the force between them

  Two charges are separated by a distance d and exert/r -ub ikv+v:(r; uvst mutual attractive forces of F on each other. If the charges are separated by a distab-u ;uksi/r+v:rt v( vnce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forby5q69j4a qayce F. What happens to the force between them if one charge is doubled, the ya4byjaqq6 95 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 d)r5dsjp jp k (0uev97vrw ;b lhwft/e vx)59:mistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed rv vudj)vh0se(p7;jwtr p5w:e)b9xm kf9/ 5 l next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Whatph xa+) menc.. happens to the magnitude of the force on the first electron if a second electron is placed next to the protoanp) .c h.+emxn?

  An electron and a proton are separ/.wzpnq bgs:wa9ctb ,,m,4 ,nnvdt 2mated by a distance of 1.0 m. What happens to the size of the force on the ,,ndab :ts b9gnnp,m/2 wtcmv.q4 w,zproton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cpm:etg)8i2 zcv v+.nwenter 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 the center of the square?w)8.et +in:2zcvv gpm

  A point charge of +Q isgzuwu2x2l36xp r6qn 5 placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's 2wur5u62p zl3qxg6x nvertices, 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 notq.5 inoxsiuk553rxm49 e;suk a vector?

  At twice the distance from a point charge, thu :qmr9 qn;./7udtnuse strength of the electric field

  Is it possible to have a ze-ff oc2 q61e7kagjiqfl//mjx:f l g.7 ro electric field value between a negative and positive charge along the line joining the t k7:o. e7x2gcf m q/flj/6f f1gaj-iqlwo charges?

  Is it possible to have a zero electric field value b o (;b:iph272 kwwnveqetween two positive charges along the line 7vqnb wp :oei;(22h kwjoining the two charges?

  Electric field lines near i ht oz71tf- d0q.uf,8sxfpe,isw8 0spsitive point charges

  The electric field shown bl.fw2kg ow,(;t7x jzj4heo,

  Can electric field lines intersect in free space?0bnu(3z qco/ u

  A solid block of metal in electrostatic equilibrium is placed in a uniform eh8v,t :0 h(httxm za7bpg dp50lect dt pv87h,ta0z5 xgpb:m0 (hhtric field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equ-or b4 mlueed:2jeojef o 5vsqvx**+/*.egz(al diameters are each given the same charge, the electric field (E) mid frezxj(bq: *2l4v m e/+5gj v*ooueoee*-sd.way between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform elx:jo7 ucvf6lt7 ;+cuupz.6zbe89uh uectric field is directed straight upward. What can;h ov8x6l.uuf:ucz+ 6p7 tcezu7u bj9 be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e0/ nb5**iz0-/u kw ,wg ;w bfnzraista. :jebqlectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounded5htqk4 drmc.8 .vo +ge1c kwj: cq;mu2. As compared to the.tmqk8cduc o;jv2 ke1 rw: . +qhcmg54 case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.qs,qir hufp2f4s3( z)

State Gauss's law.

  The charge carried by one electrct n 3+ygf4,d7g8t84w p 4 3tmbf)aunnvaf +tqon 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 lf-xxzyk,btv6/) fr6 -e1 yoi many more protons than electrons does this piece of plastic ha-b zf1,y/ofty6ek)r6ix-x lvve?

  What is the charge on 1 kg of pro: 5 2y(d9okz5stt jzdla(z8x qrcf0c(tons?

  An atomic nucleus has a ch ;xxqily 10ecvu3e8 so-zr)j*,1mfa uarge 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 valuec/i3qdi- g xf/s of 2.0 and -4.0 mC, respectively. What is the magnitude of -qxgi 3dc/f i/the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is g j2wh;gidm801.0 N. What is the magnitude g; 8mh2jwgi0dof the second charge?

  Two 1.0-C charges have a force betweens5h(3: c s*)zzsp rwf34l;,m 1nj3vxwgtfk qu them of 1.0 N. How far apart are they?

  The force between a 6vy uj6 3hfe;k$30 \; mC$ 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 for(* q,))dnz w6.ixlmz yb zewo4ce. If they are moved to a new separation of 8.0 cm, what is the electric fenyo*q.w zb)(xi64zw m,l)dzorce between them?

  Three identical point charges of 2.0 mC are placed on the xfw -f-,-(af9t )mv tm fxpuml7-axis. The first charge is at the origin,u-lp,mf v9fmf7t(a t-w-) fxm 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 placed on the x-axis. A charge of +2.0 mC is pfyrut -*r3ne:laced at the origin, -2.0 m C to the rigfru3* :nryet -ht 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 p h.qh(c3zwgf0vuu u4: ositions: 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 force on the 3.00-mC(vq03wu.h4zgufc :hu charge?

  A point charge of +Q is placed at the center of a sfzl t;j1r s d4u1y e.j;3/0jsy wse(ewquare, 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 3ywet /j.r0e l;e sjsw14fdys;1 j( uzacts 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, 0.14x y q8uh2r3ju0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude ofuy42hqru j8 3x the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 ofj 0u)p/,geu 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 thefgp0 ),jeu/uo net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC a 9 ,ui4hzit kw-db;g/704kkqvcx-y ykre placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnituct b wxq/0ki49u -k,h7d;y4yz- igkvkde of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whimo1l kfkz 6)a;ch are separated by 3.0 m. At what 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 would be1 f;m6lkakzo) zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where -jmspu-(jvk s:.s ay*on the x-axis can a third charge be placed so ju:s- ajs*pkm ysv-.( the net force on it is zero?

  Charge +2q is placed at thdszcs 5l: -t.ge origin and charge -q is placed at x = 2a. Where can a third positive charge +q be place gts:-dzl5.c sd so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of073 41 x, er2ubhpnbfypwbh+g $4.0 \times 10^{12} \; electrons$ 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 qxgu1xg.d pvtqjz) f1s0a7li8vg92 +-bj1d eof gravity by the attraction of a fixed proton some distance aboveavg gqjdd +1pvx 8lsb )fti1e7z102-x .jgq9 u it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductingk y(bk7vh1 y1zyeyl); threads which are 30 cm long. Both are given ident(y;y7bzyvl )ekkh 11yical 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 cck,l4aoq ) hl8 p+h4r(o,mykqharge of +40e. What is the magnitude of the electric field at a distance k4,+ kahq ho8lrq4m( o l,cp)yof 1.0 m from the nucleus?

  What are the magnitude and directipfq 8o6*k3a*pc 0mq4ihvjz4ion of the electric field at a distance of 1.50 m from a 50.0-nC chargeq* pf4*4j qiakp83vz6c0moh i?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theb 27ivswiyo7w oc1 bjob865r 5 electric field at the locatiw7vw ocb i6 785rj2oyb b15sioon of the test charge?

  A 5.0-C charge is 10 m fpp. )hv,zu1k ksq:en(rom a small test charge. What is the direction of the ele(qz):s.vpkh , 1nkuepctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magn1.wqpj0 .ah28 a:apxjo qi)rfitude of the force experienced by a 1.0 nC charge placed at the location of the wj. af :1qo ap)q.p8axh2ir0jtest charge?

  Two point charges each have a value of 3.0 C and are separated by a distanc6x5l+8 kr9 ;ywaq5sult7 gm tce of 4.0 m. What is t8+ws u55mqkr a gx7ct6 9lyt;lhe electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm m7/ mv-cedg ,7h; uqcoyark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at tho/ vhg,7ycum; dq7 ec-e 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a me4yy8v j5api1:( kukplter stick and a -4.0 mC charge jik4l ayp8 kyu5(pv:1 is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x vzn)wbk,hwso3;t3f1isw; be/* p /udw7qz. x= 0 and x = 0.20 m. What is the magnitude of the electric field at e1 xzwf*dib;kvss3;wowqzpb3w.7t, )n // u hthe point midway between them?

  Three 3.0 mC charges are at the three corners of a squareqiv/8qq79hi z* 6we sn8tn,py 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 squa t,6z9h n q8*qni8sq7eiyv/p wre.

  Consider a square which is 1.0 m on a side. Charges are placed au 6 f)bp9ejb*odf1kz8 t the corners of the square as follows: +4.0 mC at (0, 0); +4.0 k8f1pu6b)o*jb9zef d 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 buw5/7qh n 1hacharge of 5.0 mC when it is placed in a uniform electric field. What is b5nh1w 7 hqa/uthe magnitude of this electric field?

  A particle with a charge owu.ktt*0dbg t1p3le7 f 4.0 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 m3k+xl- kr wlpm24xfogip 99sa0poto;;ofc78ass 0.120 g is placed in an electric field of 6000 N/C pointing downwaf r t;amfkoi k7p;49wpp8o x2o x3l0los c9-g+rd. What 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 bae j+d84: fd+s4a ixqplaz ee+ eo.2q6xll is placed inside a uniform electric field, and is suspended against the force of grodxe4e+8ls+ied+ j fxaa.:qp 2e z6q4avity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrili 5c u1s (bcyz8:1uvpes a charge of +2.0 mC. What is the magnitude of the electric field 5z8u y(pl1bv 5u:1ccs i.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ele df*wd :ge.pj6ctric field 6.0 cm from t.ded 6*pjfw: ghe center of the sphere?