State the law of cons.c69j)s3 vx8 awybb c6zujjp220m8se qw h6pcervation of electric charge.

  Is it possible for two negative klph(.iz(ad;hny,dr pb/ pm vh5qh;2j,(9 gc charges to attract each other?

  Is it possible for a positive and a negative charge to attract eachin94 pzx9iw 6*x1ayw 2trq1yw other?

  A glass rod is rubbed with a piece of silkrfbrdo yakks4vc0 eo.,e+3 5). During the process the glass rod acquires a positive charge andfak vk, r4eoe0y.)ob+53cs dr the silk

  A proton carries a

  The model of the atom trz .wpra,88ny5nmm dw*6 aq. shows a

  A neutral atom always8.sw07vm1an u,gih hm has

  An atom has more electrons than protoh(julo741zsoits(l 3 ns. The atom is

  Materials in which the elecga p8q,z:26u3enz mj jtrons are bound very tightly to the nuclei are referred topgn8e 6au jzq,mj23z : as

  Materials in which the electrons are bound very loosely to the9innbq+oo /3i+ 8cw+q gy u7ri nuclei and can move about fn8g u wco+rii9qoy/nb37+ + iqreely within the material are referred to as

  A negatively charged rod is brought near one end of ang -c c)yk 4rskqz;6h1ks.z fp( uncharged metal bar. The end of the metal bar farthesscqz.hs(4 zf)6kc gy-k;r k1 pt from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pi,jb ;)47sjiu)1hlry f j1 mknlaced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statementmyj);1bkjrjin47 s lu i,1 )fh is correct?

  How can a negatively charged rod charge)w a/ay og.n fv.aif*9 an electroscope positively?

  An originally neutral electroscope isg /7 palb ap7+uz po/44x9nuwb briefly touched with a positively charged glass rod. The electroscb z o/pupag 7a7 wn/u449+lxpbope

  An originally neutral electroscope is grounded briefly while a positiv3s)6bbn 2a q-p;jtk5-g ngxuzely charged glass r56g2btnx kps;b3- ajuz-ngq)od is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thejx7 gju dcouo++ 3f17bn a negative object is brought near the electroscope, but does not t+7c guf+ jj3bodu 1o7xouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tamn ;:q;48p82cj swyfva9dr bsble. 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 fi;rm 8cs fn:9ap 8;ybvj4s d2wqrst 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 Coulomb consth1y *w;dg0xqgant $k$, which appears in Coulomb's law?

  Two charged objects are separap4jz/ps ::6o vk(trnwted by a distance d. The first charge is larger in magnitude than the seconwpp: z:kv r/noj(st64d charge.

  Sphere A carries a net charge amp+ 1 mame:y c:5awpg7nd sphere B is neutral. They are placed near each other on an insaammy c:m pp57g:+ e1wulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chl1pvh(+t )zoc81ani 5 cv sdwto3+9 cjarges on both objects are doubled with no change in separation, the force be v 8ht1lsin)+zo5cc wtc3 o1+vdp (j9atween them

  Two charges are separated by a distance d and exert mu xxmnco-p/9 -atual attractive forces of F on each oth- n9pc/x mxo-aer. 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 happe ifzlk8 9ko715qlr (ngns to 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? T7g(8o q1k k9lnzrifl5 he force is now equal to

  An electron and a prq g; kby;nk ,mu+y5.bpoton are separated by a distance of 1.0 m. What happens to the magnitudkbm + .uky,;5n;qybgpe of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens toj.m:rm9ev h) n the magnitude of thm :hve .rj)m9ne force on the first 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. Whatozdwff. :6jk+ happens to the size of theoz:+f wkd6. jf force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plag c zo(xm+ g uhrtmvodbe-5lr3;8(7)jced 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 lovmh35 xctbg(eugjr)zr( m+;-o87d 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 triangl 4-1u,ixw jnvktb keax(7d6-te. 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 the center ch-u,b-n 6(k ekvd x7i4taw1jxt arge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vvk+s a0lj5(nm pbk 7r-ector?

  At twice the distance from a point char0tm-;h-z :zfanalbk:ge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and po5.hz zi :kgu-jc-7yabknev -)sitive c -b.k5)e z v hj-n-ai7:yuzckgharge along the line joining the two charges?

  Is it possible to have a zero electric fim+ah /kz(oc-lc++wohwm )tj *.bpo8qhuf .8r eld value between two positive charges along thk amz.+o .jq/r cf-*l+upc)wb8ho t+8hwom( he line joining the two charges?

  Electric field lines near psitive poipg /jv:n(fzcaeo4 r-suq6) 6rnt charges

  The electric field showz)dqx0ry*l/ .u oixx/n

  Can electric field ls y8x3/a i,m;bs-m iqzines intersect in free space?

  A solid block of metal in electrostatic equilibrium is platu0dkj xk4.;v ced in a uniform electric fiev4jt d0.kukx; ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spax87yu0 rd n3ik* /cqk nn67ixhere of equal diameters are each given the same charge, the electric field (E) midway between the center and c r6 0 n7ixi yku3k*x8nn7/aqdthe surface is

  A cubic block of alumydx7k, ;r bby69anzx .w fu;e6inum rests on a wooden table in a region where a uniform electric fib9;u.6 k6 rexfa;x7y zd nyw,beld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near a q o(cqco4c0*( 76cnr5wwdfyn n electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is aum6688nr pbem7,p f ygrounded.nbm6 p m868yp,er7a uf As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducs0 60b+cmi- tqm; gm7ny ej3aetors in static equilibrium.

State Gauss's law.

  The charge carried by one electrof:y o*sdiv vt4v2i w;0fi/gq )n 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 ng)lw/ ze-l9e 4uuq,yrw ebum7ng 4i:,et charge of +2.00 mC. How many more protons than electrons does this piece ofi ee/ml)u-eybq wu: ,n79g ,4w zrugl4 plastic have?

  What is the charge on 1 kg o3xk ohbn a5,*of protons?

  An atomic nucleus has a cha;( +q;aelyx xkrge 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 c1ow516aiq7g5su -b7n,n gfq 2h.hlvql fhij/harge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between th,- /l 7bi.f5n gj au27nhsgo qiw1h56vf q1qlhem?

  A 1.0-C charge is 15 m from a i1x+i k- u 0zxhrqp-7jsecond charge, and the force between them is 1.0 N. What is the magnitudehj1 7puixzqir -0+ -kx of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far a q )6n*irw6/n n wn1o6epqma:ppart are they?

  The force between a db * nwllh+*+n1l- lxq$30 \; mC$ 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 force. If tge7 zx,;g* sgqhey are moved to a new separation of 8.0 cm, what is the electric force bgg ;, xz7*esqgetween them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thek9 vp;zj7mt3k /mofb2 first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. Whpjb/vo2 f 3m 9kt;mzk7at are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on them*);zwmwd- xn jn)j +u x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the rj))dux+z;mnw n m-jw*ight 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 mC *n9jrt+yyw*h 9s2 +p +jqnfe hat x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.0 y e+fw rn9sq+ynjh9* tp2*h+j0 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 squa0 *i vezvny09qbs fyj6i/o:h.re, and a second point charge of -Q is placed at the upper-left corner. It is observed 0n yvyj6:/i.es oiz f0b*vq9hthat 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 = (ihov+rrlg w2-l iq2 9;vyxy/-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What iw;rlr /+v xgi22-ly(iq h9yvos the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2cleq b p( n5nn5q+ kg,)ppb.gh.ps m0, = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). W.0qb s5npn bp ,.gl+h) g,5p (kcmpneqhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertice.muq-cc n** .v;id ouis of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of dcuu- *m;.noi.* civq the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what(5p3 w1outoy sotgm) o37k5eh f53we u point, on a line between the two charges, would it be possible to place a charge of -Q such that the elect 1535o uhemtfw5pog)ektus(y3w oo37 rostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at34i dcmt7ijde .oiph57.2- c 1wqsk2i js w;jw x = 4.0 m. Where on the x-axis can a third c ;2q3ds-ccht5ked2 wosj4ij.ipw w.im 7i 71jharge be placed so the net force on it is zero?

  Charge +2q is placed at the originhs ,qns gw pm9r /(3te:a)ks8i and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the forca:sq,rtn8sm9h/ is e(pw kg3) e on it is zero?

  A copper penny has a mass of 4j lh*4l.m 2a5gdln7zmvupnwn8 g u0: 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 gravity by the attractit3k 5m0g7z4jt b+z oitc8p6pion of a fixed proton some distance above it. How far above t70 8i b3jgckzmt tzo4i6+5ppthe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thr1xd galqwzh *--2xk4reads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them aparka14 l- wg-dr2*zh xxqt until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cx4truj y17i7v harge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleuu 1t477vijxyr s?

  What are the magnitude and directioc k4al74smc31 wio+h w)u6gqhn of the electric field at a distance of 1.50 m from a 50.0-nC hs3mo wgw6h+a7ic c)1qkl 4u4charge?

  A 5.0-C charge is 10 m from 5gyls5aef: )uv:eknc rc/- 1 oa small test charge. What is the magnitude of the electric field at the location of the test chargy- kgf5sec)culn e v:ra5/:o1 e?

  A 5.0-C charge is 10 mwuljiqgumw,:3v 1,bu0i2a4c from a small test charge. What is the direction of the electric fieldv0c2i,j3 a, mwu:iqb4w lgu1u?

  A 5.0-C charge is 10 m from a jr/bs xx* n04rsmall test charge. What is the magnitude of the force experienced by a 1.0 nC chx*j4n/0rs rb xarge placed at the location of the test charge?

  Two point charges each have a value of *qr,p xwl.a+i+j3xju 3.0 C and are separated by a distance of 4.0 m. What is the electric+jx3jl.r ,qxai* wu+ p 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/ ricj /*5. 2swiny*xjyqc. sl*kdqn ) -4.0 mC chargewqisy ./5 n*k r j*yq2 cic)dln*s/jx. is placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at a a-g:**3lwpzjkvv (nthe 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 joizg*av *3k : nwl-j(apvning the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 z0f 0;:6qykl( fj 8gow9ad 0; tjgl.qrk*kblb mC are placed at x = 0 and x = 0.20 m. What is the ;q0 9lr08byzta.:lok* ;gflb kjqgfw(60jd kmagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges areg8pou3vo iewc:9/w3 z at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at theo u gip39wwoe3 8zc/:v center of the square.

  Consider a square which is 1.0 m on a sidm f;; n8l;nptie. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +48;t ;fnnilp m;.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 odij hab:akd km*551nx d9d+e.cyg. g :f 5.0 mC when it is placed in a uniform electric field. What is thg :x *: 5+dd..19dknac mh5iyjdgb akee magnitude of this electric field?

  A particle with a charge of 4.0 w8)ak3j: cak6xw93n6cn le jn 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 mass 0.120 g is placed in an elect uvsg8h+0b8dbx 3rpm5 ric field of 6000 N/C pointing downward. What charged su830gb+p vhxr5mb8 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. j+7f3d2 +p3x (4 ekcgowbtwby The ball is placed inside a uniform electric field, and is fwwctyo2bxj3d4g3ep7+ ( bk+suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrieok+a5) )fmpe 6g,*u)ps y lifes a charge of +2.0 mC. What is the magnitude of the electric f)ifuae, lfs)*ym6ge) o+5k p pield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mwqmsz2d2.h pmh3q 84 -2fslhl C. What is the electric field 6.0 cm frol8m-q.2 qm3fw 4l phhhss2z2dm the center of the sphere?