State the law of conservation of electric cha mc :5 tc b9(*qqo/zrt5x ecf6a6tl.snrge.

  Is it possible for two negative charges to attract5 nro 72afz2rueepem:;u5y0e each other?

  Is it possible for a2gh/ :zerg6.g7yoj*gh-p *ww ze;* q ew yl7mc positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rodcr-gt8+;ilr ;k q9b yl acquires a positive charge and tqrrl yg 9ib;k+-c; lt8he silk

  A proton carries a

  The model of the atom shry*,-y ye doj5-xp0xzows a

  A neutral atom always hasm(f0xvja0zm*yhp 0 4q

  An atom has more elecrd0 nq xe/sdw qdhpz07,8i.l 2trons than protons. The atom is

  Materials in which the electre2ulzmxhe*9e+ c1 w4r ons are bound very tightly to the nuclei are referred to as4*e ew2+1 muczx 9elhr

  Materials in which the electrw2kl1qt+uqk---6h u 0qcc l loons are bound very loosely to the nuclei and can move about freely within the material are 0lkqqc-t21ho cu u6l- w q+k-lreferred to as

  A negatively charged rod is broughttfe :uv 1j2q fwzsg-.* near one end of an uncharged metal bar. The end of the me1f*vqet-wj. zf s:2gutal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They a2( kqyr9w +g);4jel oxrh rmz:z6xkp/re placed near each other on an insulated table. Sphere B is briefly touched withmk2j:qr x+eoz wp 69gx(/l;z)kry4 hr a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cuvd-gjpo0; 8zra3jh.unq1 1 ;ol:zedharge an electroscope positively?

  An originally neutral electroscope is briefly touched cq copme/a.zux7 +0 azsov-/)mouq:,with a positively charged gloo/-qm+a / ,vsumpcc7uzza e:)o.qx0ass rod. The electroscope

  An originally neutral electroscope is grounded briefly w0 9; gnx8xfjgn)z2:w4ig ls exhile a positively charged glass rod is held near it. After the glass 24 0z )g; wfxn8xigjxg:ls9nerod is removed, the electroscope

  A positive object touches a neutral electroscowah4-jgju/*,sjxzxd.qerh-tfc* . is1m 9 z3pe, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wha4*z3r sqh1-xta he-uf g xcji/*.mj9s,jzwd. t happens to the leaves?

  A large negatively charged object is placed on an vs19 dc z:5,( kcsd 1e8w6zhslrivx:winsulated 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 ballc5cezd:x1wl :, v(s6rw s kh9vzs18di 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 Coulom:kv ew. 0pegd3 ntd07sb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanwd;v / z(srcz0m.x)ddce d. The first charge is larger in magnitude than the seconwdz vc/z;. r )d0sdxm(d charge.

  Sphere A carries a net charge and sphere B isb+30viic:h hs neutral. They are placed near each other on an3c i+ sihbhv:0 insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain *7czlvrf ds0 4force. If the charges on both objects are sv 0d cf7r*zl4doubled with no change in separation, the force between them

  Two charges are separated by a distance d gh032pu5zbfh4 8-npgc fvi l8 and exert mutual attractive forces of F onplbh234fg0c8zu h v f8p5g-ni each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each otn6x*sy /lfyo 1n;op7b her with a force F. What happens 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? The force is n*o;yn6s lboxfy1 n/p7 ow equal to

  An electron and a proton are separated by a dist70r -ea (xb,oj em mrjhh7ap*qn29n2 hance of 1.0 m. What happens to the magnitude of the force on the proton if a second elec*be xpn,mrh-rm (ea o an7h hq2j207j9tron is placed next to the first electron?

  An electron and a proton are separate)v s;mc gcj3i *8p4lpfd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron g4j ;3vl*f)is ppcc m8is placed next to the proton?

  An electron and a prot9eff(0 +quk dmjq(38lekg5 zgon are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closumqg0 zqf9+fl3 ge(dekj 5k( 8er to the proton?

  A point charge of +Q is placed at the cent zx6.x is(k9xr vqg/2wer 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( .6k2qwsxvzx x9gir/ 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 triangle. When:hrj/7 k2l0 uk3lnb q to+r/xk a second charge of +Q ibk2+kxk3uolhn jr q :ltr/0/ 7s 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 charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following ie loftyos*g+(9gr t j4cr .om6 15ik)vs not a vector?

  At twice the distance from a point charge, the ;xv( .j5oxdw etj,s y5strength of the electric field

  Is it possible to have a zero electric field value between a negative andr; m nit0q8tz3au.+ cq positive charge along the line joining the two charges;0m+t c aquni 38.tzrq?

  Is it possible to have a zero electric field value betxiv.q:8g5h a bween two positive charges along the line joining the two q 5abxhig:.8v charges?

  Electric field linesmxyl w-i) x;d.erx+m1 near psitive point charges

  The electric field sr:eeqy4ib ytm ldcx .0,x):is2o7m6. o3th nbhown

  Can electric field lines in cko2ct1t jdw h;q5jx-;d-b.ztersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform electljt58gog 3lh9)d( ighric field. G8 g3gi h 9)5johgtld(live a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters awuci i gvl:qmxi 9fp234nkm zf395a;4 re each given the same charge, the electric field (E) midway between the center andz w 9muqfnm3gif4a :xkl5 3v9 4iipc2; the surface is

  A cubic block of aluminum rests on a wooden table ind81ll;-j eqonle f3hzsg 1/ l+ a region where a uniform electric field is directed straight upward. What can be sa1enl +-hgll ;o /dlfs1q3jze8 id concerning the charge on the block's top surface?

  If a conductor is in electrnfld 9tf jt rq*7ng+wh1d u,9.ostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that e8ujqlds. ) 4xe yl3cg .-qfp3is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above lqy-.)e3g3cxu qpf 8lj4.des the hollow sphere has

State three properties of conductors m n+x9vcl:8ga 8xqywu3(vn.b in static equilibrium.

State Gauss's law.

  The charge carried by one electron inl- 8 ns4dvk2zs $e = -1.6 \times 10^{-19} \; C$. 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 thuzw3: 4scch(:f 8jxnvan electrons does this piece of(8sv: :4uzc w hxjfn3c plastic have?

  What is the charge on 1 kg of protonm v0 *xjk 2foi1(tak f12gs7f;ol f(frs?

  An atomic nucleus has a charge 6 h nbz :rn8und18xts5of $+40e$. 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 charge0; qw( 3skeey6ryimdnv 2*4yo values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcenw(yvo260q*myed i ;4sk3rye between them?

  A 1.0-C charge is 15 m from a second cp4aq10x;p ez5 m5a3mvn t pu+wharge, and the force between them is 1.0 N. What is the magnitude of the second ;pnuq51a empv ap34+x5wtm0zcharge?

  Two 1.0-C charges have a 2b1(n t(vueq0k pj uo3xblv5 2force between them of 1.0 N. How far apart are they?

  The force between a 5 i;+7q,3kj/2qtyrww r jll fv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experi( o)b n*7nad4nb,zy sft )6wd9hu 9zvfence a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is bub)s,96 nfzd*v n4t ayd( hnw 79f)ozthe electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-ax p.ap9. kmaank.h7 na6h4*csx is. 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 magnitudcx7k4*phmk np. aahs. 9a6.ane and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placv7ls 81d28daptzx,b ded on 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 mark. What are the magnitude and direction of the electrostatic force which acts on the charge at tv d xbzldt8s, 18p2da7he origin?

  Three point charges are loca-b0mu-mq33+fp;hn okq( sf r* s+g uyited at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; qyk0m (+brfus*sp 3on;i- +muqh -gf3Q3 = -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 is1m.9 aa q e(da)ytn4bzgp53uw5 a /x 5wxfe.zq 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 force of 2.0 N acts on the positive charge at the center. What is the magniq5x5 fu4 gnza51 qz/)peday.x9aa 3.bmtwe( wtude 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, vn ir qgu6;. bl1(rob;ur*0vn 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fo*v.;nulobu( 6;b10qnr i grvrrce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (027di.t 1(l1m21jcth ,uz/qrue a eejx.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directi(ja etzejcd u/mt1h iqr e ux,211.72lon of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilate jltgild:/k:5bxz 3 evuj.d.:4jyrw -ral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any on/luglz v 4kdtj-y::d5 r.j3i e:w.xbje of the charges?

  Consider point charges of+ -vs+b4oykwv +Q and +4Q, which 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 be+y-4sv+vbkw o zero?

  A +3.0-C charge is at the origin and a +9.0-C charge;zgnm4ss y/ v-nx.8q tn +rm/xuc;gd+ is at x = 4.0 m. Where on the x-axis can a third charge be placed so the netss ;n+y u q4gczrnx t ;dvm+x/-8/gn.m force on it is zero?

  Charge +2q is placed ae:xr e y6cwpwc1 o)q58 r 7i9yd+ips+ot the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plac +)x8 s1rcqyooy:p 5 i7p+r6iwe cdew9ed so that the force on it is zero?

  A copper penny has a mass of 3g b4v6iaq/cc(n(b3x27hn/ikx 5z iak g m17 ug.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 :k;so9 0hxgngby the attraction of a fixed proton some dista 9ghko x:ngs0;nce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poioxtjb2;c5b, q wf*pe2nt by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betweetbox pqb w2 ,;f5e*jc2n the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is tu2:ls9 zmo wt8uf) s9 bnm5a0ghe magnitude of the electric field at a distance of 1s09 z 8bum o)2:gmalutf5s9wn .0 m from the nucleus?

  What are the magnitude and d1(zwi (fbe g;-* gzqtxirection of the electric field at a distance of 1.50 m from a 50.0-nC cxtzeg*1 ; (zqiw(-gfbharge?

  A 5.0-C charge is 10 m from a small test charge w 6xpyazd-- 2b71pep6 vwy8le. What is the magnitude of the eledewpw1b2z xyp6ye8 -pv-l7a6 ctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direvs /7kqq3:cqs ajiowq d0-,z1ction of the electriczoqqsq3:j7wsqia/kc, d1- v 0 field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitumuu nf qt: ok9,xpup7/)0d1zlde of the force experienced by a 1.0 nC charge placed at the loc:xfluzk)o9m, 0/ud qnu17tpp ation of the test charge?

  Two point charges each have algbg; y 8 ).zn*a (xcztzsv1i0 value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field 8(b x. lgyzit* v0sc;azgnz 1)at a point midway between the two charges?

  A 5.0-mC charge is placed at thetk +siqb08u 5m .*kxvu 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm 5x8mkitqs+*bu 0u .vk mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick deye.zck6liu o 580+fw vtfp*ps.e7 /and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line67vcifk 8 olz0 /eewp ypsfe5*.dt.u+ joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 6sy*ebtyds7qzo: 7 /txni6 ger.i c51 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between the1 bzo/ecitq6drgt.ysn*y6 s 5 77:ei xm?

  Three 3.0 mC charges are at the three corners of a square ofm.clxu sny:1bjs1sx,v, kt8j7z2esk07 ;n ez side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cent skzbkjz8 n;svu1s7t1 e,x.yxnl0 s2mc :j7,eer of the square.

  Consider a square whichxr(mob) 01lh)zktf7h 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 (1, 0); -3.0 htfo r1x0z)m( )blhk7mC 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 ulh; z;b xm;)gof 5.0 mC when it is placed in a uniform electric m;h; )zblux ;gfield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC ha7:vvfl+l 1n rv7wn; daehm7t+s 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 electrixs yt + qw/w0)jdw81zdc field of 6000 N/C pointin 0)wqy wt8ddwj+z1/s xg downward. 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 ball is place + ;qhrku61jjp/71hoc4m ua std inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction ofcm +ua4 uj1 q; poth17hjskr6/ the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 fnabfr / -6.qumC. What is the magnitude of the electric field 5.0 cm fru r qbfn.f/6a-om the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge o:chen9p1t3 ku*5pvyrf 3.0 mC. What is the electric field 6.0 cm from the center of the*h9 eup tp3ckn r1:5vy sphere?