State the law of conservation of electri,hqy+mou i.ch; alz44c charge.

  Is it possible for two negativo 7ixt6y5 f)*hefk(fsm(yw q1e charges to attract each other?

  Is it possible for a positive and a negative charge to attr6/z lh+gdbm nf xs zfn7oio ;w4f:mwa(;l3,w 3act each other?

  A glass rod is rubbed mru /voqh(k(- with a piece of silk. During the process the glass rod acquires a positive charge ando(u q(mh-vk/r the silk

  A proton carries a

  The model of the atom shows - q5-ycmi28pxr yv x1ha

  A neutral atom always(39rz4ocel t j has

  An atom has more electroe f.9 -m2 s-/rzj-gv, vjb0d j*znrpigns than protons. The atom is

  Materials in which the electronhb , :*g j63c3h gvqb0jncd.uys are bound very tightly to the nuclei are referred t.y:ubj,bqcj6 03vn 3ghh gd *co as

  Materials in which the electrons are bound ver.zgxt3zwy tg3 k*w;p4y loosely to the nuclei and can move about freely within the material are 4p3zwtgk; yz*xgt3w .referred to as

  A negatively charged rod isw 7fq ba.tn2wzjx(3n: brought near one end of an uncharged metal bar. The xz tw3. f:qawbjnn7 2(end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pla; m5xv9bam*d pced near each other on an insulated table. Sphere B is brieflyvmx5am 9 *;bdp touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an 2w:+ y.2nzu0b zot mzt7d5sc qelectroscope positively?

  An originally neutral electroscope is bri zi46+sid d 5 nh+hwpxxg,;bl(efly touched with a positively charged glass rod. The electr4+hs ddx,+(pg lib 6hzixw5;noscope

  An originally neutral electroscocmqcz t8/* 4vxg0, 6b(lcuv ckpe is grounded briefly while a positively charged glac04vg*k cvtz c,b(m68/lux qcss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the om7qe1gzge2-+h d 3 zfleaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the le ozd7q3-2gg1mh+z e feaves?

  A large negatively charged object /ei 1 lv36jb9t1lg 7bnjx11 lplkay v9is 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 yxjgl1e71ptvbv19 b l61ka 3l9i/jln 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 Co*p-0zm bt fxfw7zy1x 1ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects a +ln2uc8u7 b)qz k(lvure separated by a distance d. The first charge is larger in magnitude than the secu ql)cl+u8kbvn( 2 uz7ond charge.

  Sphere A carries a net chawzlb24vs(l )- xa1oxzrge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best dezx24oa 1swbz-lvx)(l scribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If kn2nq:(e3g xk97ff5o v4e dyithe charges on both objects are doubled with no change in sk :die fxg97ynfoevn3k45(2 qeparation, the force between them

  Two charges are separat/c,2cpb7w-qdxx:r54 ys ffmz9,zc pred by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a dist75 cbzx-xrrc m,fp zd9/: f, p4q2swcyance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hapq j/t lw 2rq2357iu5hck idmx) fv l0qr6w,vh,pens to the force between them if one charge c h)2/ 2f0x quimtjw6l hrk5,5rw,l iqq3d7vvis 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 happens thwbc7 yxy e)c9pv 5/8go the magnitude of the force on the proton if a seco/y9p 85xbv) hwge7yc cnd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What haqe+ rcwmoo+k3 vt 7;j1ppens to o71 mq;c t+ +ovw3ekjrthe magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separ evbo awrj4fuid0r1p),b4e7q1 v9ey-ated by a distance of 1.0 m. What happens to the s9rpjb 10oeefwqrd4,-7)yvva i1 4bueize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a sq kmqjd3lknh4;qq)zs-/ kx,1 a uare. When a second point charge of -Q is placed at one 1n4z;/q 3ks,mq k-) dlqahjxkof 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 centroid of an equilateral triangle2-ozc i7z(je lg;jvru3p, c ,m. When a second charge of +Q is placed at one of g ,rpclm( zove7c2-iz;, jj3u the 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 is not a vector?v5h((dqa8 we7p j(nye

  At twice the distance from a point fsw/xlu36l, hu7y+xhavw+ . xcharge, the strength of the electric field

  Is it possible to have a zero electpc;;e5ul tn3a 4u+x gbric field value between a negative and positive charge along the line joining thg 45cteu 3apxnb;+u l;e two charges?

  Is it possible to have a zero electric field value between two positive char x+h6z;xg.zyss(d8 o eges along the line joinsys8doe zz x x;(+6g.hing the two charges?

  Electric field lines near psitive point charges4,6j5 dht7p kzpdq2q q

  The electric field su6-jnw /wh-zjhown

  Can electric field lines inw5j(9v2ny lc ktersect in free space?

  A solid block of metal in electrostatic equi*r msnot(q e(y +v))a5rpgig0librium is placed in a uniform electric field. Give a statement concerning the electric field in th i)+*nyepr )t s5qvag(0g(m ore block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dqjqqi *jjp 2, ee,8z:iiameters are each given the same charge, the electric q,eq*p,ei j qjiz28j:field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodenp 0ab fjls4jfg9cb a/ o9jo;6, table in a region where a uniform electric field is directed straight upward. What can be said concerning ,cpjos9b4 ;/jol9f6gjb0faa the charge on the block's top surface?

  If a conductor is in electro;s /q6f km.luwa j6rno)8izf6static equilibrium near an electric charge

  A positive point charg*tn3pv,a z7lh( hlppp(i-ap1 e is enclosed in a hollow metallic sphere that is grounded. As compared to the case withpiv*h 1anp-pz7,(a l(p thl p3out the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.joy/0 qn/gcs 3

State Gauss's law.

  The charge carried by one electr*; r0c7 nqw yzx-jxtm(on 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 many more protons than ell ;v2+xflz 2oeectrons does this piece of plasto2 ve2lx+f ;zlic have?

  What is the charge on 1 kg of p2 :ua0ja.;yxj;pg /v tsogk5u rotons?

  An atomic nucleus has a chaz9u5i /g9nx lgrge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5f70 p0ajy nbx:6;bsil cm, have charge values of 2.0 and -4.0 mC, respectively. What is lyf: ;6ai7bn0p0x jsbthe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them i):m)+n2rnc8nt 3vsj vu w7qezj. xsi+s 1.0 N. What is the magnitude of the se2)j : z+jvm8 wt7e+rv3cnsqiunn.sx)cond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arerx7dn x) 7yrb,vbxu39 they?

  The force between a yab) .lf9l:j 6vd)mkb $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienc*b,d6esfi 5 rme a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the esd,5ire*b mf6 lectric force between them?

  Three identical point charges of 2.0 mC are placed on the hlow*98rwfr8 5ozk(h a2z 9pnx-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 hn892a5*p8o hwz zrw 9rl(fko electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the.wqi 6anh* sp) 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 dins. wh6p)iq a*rection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: ewgatln5knca .: )4p( Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -ngt npc. ew(:k)a l54a1.00 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 squ vp(x*ar ;9tul. 04 sej-sstzrkb50 xpare, and a second point charge of -Q is placed at the upperlsvpt9puj;zte .rx5srxkb- (0 s0a 4 *-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 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 i9 9.hn )hra a66vz nsir chlzow.x.1+nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of theaw.v)1 c lrihz.i9an 6h n h.z6s9xo+r net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC isq5yn;jr )qac 5 wdb1p0 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is); 0ryaq1qnwbc p5j d5 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 equilateraljtm2;- lq vbza/cc 0:q triangle which measures 30 cm on a side. What is the magnitude of the electrostqmj:aq-v;/cz b2 0tlcatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated bh j zk+; o450tnncjji8y 3.0 m. At what point, on a line between the 8k 45ojnzc0h+njji;t 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 b vls6 : )2ukli+ko64w t8hyqo= 4.0 m. Where on the x-a6wlq6s2k4 hy)t vl:ibu o+k8oxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed 553ogtj tw,0 e8r xigcat the origin and charge -q is placed at x = 2a. Where can a third positive charge +q g5toj 3xwc80 gi5te r,be placed so that the force on it is zero?

  A copper penny has app5 a+h00e xawv3rbx6 mass 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 b e;x+x (v3yikaggtazg-wl-1b u 4h 57of gravity by the attraction of a fixed proton some distance above it. Ht3gk 57e4zh w (avgl-+x gyxaui1;b-b ow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a cho6y7meq:p3,fn)n :fgfe: o wommon point by nonconducting threads which are 30 cm lon ::po):f7qge fn3ywhfemn6o, g. 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 the magnitude of the electric8cesqfl:5q4 4 k ir -bf)kmva4fyl09r field at a distance of 1.0 m fromq-r cam)k9vfqklfe4 l0b i458s :4y fr the nucleus?

  What are the magnitude and dc:n2t5 o d jn9uoo60esah bw q4gu5*.airection of the electric field at a distance of 1.50 b:09o na .has*n5jqwgcu45 62eoot u dm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magp5 tp;h;rzp ixb .l/g:nitude of the electric field at the location of the t;p5/p xgtlb .piz ;:rhest charge?

  A 5.0-C charge is 10 m from a small -7hgsn2 e ls-tem9xu t:li 7/atest charge. What is the direction of the el:-n htx2ets li/ l -uam9e7gs7ectric field?

  A 5.0-C charge is 10 m fr+w bx(cm cqh *k)g59hgom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of t* h)c wgh9qxbgm(k+5c he test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of g8 ;g;x u4oaeqk.d1po4.0x1ku e4;oo8d; ggap .q m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0w0, x:4hooqcj mC charge is placed at the 50 cm mark. 4qo0 jwc,xho:What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plachptz3 g)t5 vbs61(uek ed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what poit ) gtpve5 z61k(bhs3unt on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 li+ej2r9gu :2j 5j3hg*turjgtf e)*d mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fieldd2fu *hilgj9 +jj t*5e jt:3re2r)gug at the point midway between them?

  Three 3.0 mC charges are at thzraez;xnlqq * b4gu8;dau4 :+e three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 qbzn+zq l:*;4ugru8d4 ;ax eamC charge. Find the electric field at the center of the square.

  Consider a square whic,bb-ak y 5nio)jty/8fh is 1.0 m on a side. 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 on8ibk 5/ t,yfybj)- a(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 1cno f6ed s0:iuj-.dxe e( mc3in a uniform electric fieldofc(0 3meen6dxucjd -i 1.es:. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has ( yev+l mw8*z:aup:mga 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 ofzzaz :.ye gf ji:.t o,q)1qit7lf;b9 n 6000 N/C pointing downward. What chargi g;.az).l o,9tyjnzbqq etfz1::if7 e 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. y8gugt : ack35u2r c6scm.b 6q The ball is placed inside a uniform electric field, and is suspended ac 8t6qm gcacks:guu 6b53ry2.gainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge zh uphu my7-m+ht -w0.of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfaceu h0h z7+- u.t-mmywph?

  A metal sphere of radius 2.0 c 2wzlb6: yn3t4n)fzrxm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the centebxty3 ) 2fnzw4zl:r6nr of the sphere?