State the law of conservation onbzw5c/ qspn p0n4 voos)6q(7f electric charge.

  Is it possible for two negative czl ru)j6 u7y(charges to attract each other?

  Is it possible for a positive and a negative charge to attract each otherf6xz w: f1+wlr?

  A glass rod is rubbed withck /+wu,0 eln0cez/xd a piece of silk. During the process the glass rod acquires a positive chargwdu, k0e+lcznx0c/ e/e and the silk

  A proton carries a

  The model of the atom b7h v0;eb76ka( .fkdkxdi:ng shows a

  A neutral atom always ul :)*hyyjd ;thas

  An atom has more electronme:ahc2kjk*58 yv iz.s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referw ngkc5-3 rl- ,fm.nx-s3qn qered tormn,l s-5nx q-fg.3 ewk qn-c3 as

  Materials in which the electrons are bound very loosely to the nuclei zg5-ma;,nfwtycp6 ua2hc9 ) yand can move about freely g2tczymc6-;y wfp9,u n ha5) awithin the material are referred to as

  A negatively charged rod is brought near one endt( 3 ba, gd6uii2r vnhppg0) y-bhs/myh2n49v of an uncharged metal bar. The end of the metal bar farthestg pd0a2nprh3)2 msbihu y4t9 y6h-vb vni,g/( from the charged rod will be charged

  Sphere A carries a net positive cha* 7bgj pk9dqxf.f)l)sd t(xr7 rge, and sphere B is neutral. They are placed near each other o*)r)sxx fdd jkptflbgq7 (7 .9n an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge u.z7xhs9::m5oywt 5nt0nz kq an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively cfs.3h; msbd n01a r.xzharged glass rod. The electrosco. .h1bda; rxssn m0zf3pe

  An originally neutral electroscope is grounded briefly wdpe;)l h2ax(l8 q6do bhile a positively charge2a8;bldxlh ) qp6deo( d glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electro7j fc vbbb2jze(/zs9- scope, and the leaves separate. Then a negative ob(cjbe 7/2fj- z9bvbzsject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placi;1k:cf 8 o w)txparv 2z(o9nged 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 trikz noa9xw8g2fp1) c( t:o ;vouch 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 consw fde6 3convcc avi2(rx4)) *3mh9zfktant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first czduh;c2a4j n8f g s)c8harge is larger iszf4c)n h2g j8u8acd; n magnitude than the second charge.

  Sphere A carries a net charge b9ray5/un8wr fh7q 9a and sphere B is neutral. They are placed near each other on an insulated table. Which statement best 7 hbnyrwqra599a8uf/describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onbzv- -fns f5sejk e10)4v ed/f both objects are doubled with no change in separatf)5e dv/nfzs-1 4ej -kf0vbse ion, the force between them

  Two charges are separated by a distan y8t2-cg tcqw1ce d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new 2tt cqw -1c8ygmutual forces?

  Two charged objects attract each other with a fndyz ;lh /ys52orce F. What happens to the force between them if odsh yz2y/;5nl ne 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 now equal to

  An electron and a proton are * jmqb8yp9p3 1d ogk:tme-/n useparated by a distance of 1.0 m. What happens to the magnitude of the *uj t-m1 38dmo/qeb y:pgp 9knforce 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. Wm ) z:9ta1ysken96pw.bu vvx;hat happens to the m.z ;9knaxsmyv v)9utw1epb:6 agnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepwka2 qd7 6w1bx0 q7otwt*;0eu7 aswjk8vp :xwarated by a distance of 1.0 m. What happens to the size of the force on the 2qw a6;7xbwxked0wo qt7jwp w :s8*a17v0k tuproton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed la(m6u.v3soopr4 x3crj 5db (at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is observsaj3 mol x 6rrb45udvop(.(3c ed 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 equilate la04zn 7zs0ghral triangle. When a second charge of +Q is plach z0a4szlng0 7ed 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 is notp fh;t),3j; d8jadbgqj48p g; cydqug5 (4ule a vector?

  At twice the distance from a point charge, the strength of the elect*)on 9fnp:q: qf.xgfuric field

  Is it possible to have a zero electric field value between a negat:u*s*ibs+ aw :re8ua y/aj ivymgr1).ive and positive charge along the line joiningy iuguws )b*rv .r/8:y1ie+jsm* : aaa the two charges?

  Is it possible to have a zero electric field value between two po-jl1srzeq;3 3hjr: dbsitive charges along the line j1 zdeh3-q b:rj3lr;jsoining the two charges?

  Electric field lines near psitive pointb7fzr9qdier3+eg g ** charges

  The electric field shown 8o +shc:fi*hy3 vzsu;

  Can electric field lines intersect in free spacg q.(l53zy-rqp* yrzge?

  A solid block of metal in electrostatic equilibrium is placed in a unij3kngi2ob 7v;p( +funb 2t 3poform electric field. Give a2j(; povbtnp7+gnoi233kfb u statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameteiokc/q/c*k..h sw2 p) j/4svsgcypn0rs are each given the same charge, the electric f .wg*/c/j s ynv)c/ci4.s pp k0hkq2soield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table iv3ufe0sjys8 xa.*+ aan a region where a uniform electric field is directed straight upwya0+s sau.j ev3a8f *xard. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibu* 9, e a6p.rze5purpprium near an electric charge

  A positive point charge is; hk2m9t*a wli enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direc2w*ih9 ;tlam ktly above the hollow sphere has

State three properties of conductors in static eq(kvt6mtn ,46wg cdrbc :o+ay-uilibrium.

State Gauss's law.

  The charge carried by one by8 f h6+fi0wlelectron 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 me1y rzv3s(yw 4 ydi,d/ore protons than electrons does this piece of plastic wy3/4i,ysdzrvy(1 de have?

  What is the charge on 1 kg of prot4)kuk.e+vie he64utxuu+w k+4acm t 0ons?

  An atomic nucleus has a z7 pd/i/vd -tyor/bl8 charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated byti5cf- hh -; 6h1mgukk 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What t;c -u5h ghh 1kfm6ik-is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between theadg +y ysu+j3c;gy3r/lk4o3lm is 1.0 N. +;3o4cu dlg y gjry3s3 l+/kyaWhat is the magnitude of the second charge?

  Two 1.0-C charges have a force ;qv7e4: x4 4+gsx)o6xfl 6arcws zzyhbetween them of 1.0 N. How far apart are they?

  The force between a akay9r gpu w-b3s/i- *$30 \; mC$ 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. i/lthml mn1f.f6c )8b0-N force. If they are moved to a new separation of 8)hm1ilnc8m6lb/ f.t f.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chr 9 brx84pznk9q (320hunrghscm2l1aarge is at the origin, the second to the right at x = 50 cm, and the third is at the 101x8k9rza 3b02nqrhp9u gms lr4cnh2( 0 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 7mu+mo9y5gi7 n dza :hte*6wmon 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 ao 57zgtmimmy7:he a+6*9wdn ut 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 = x-q0dw2l6t,hlw0ld x 2.00 mC at x = x,dl-06 t2wh0x ldqlw 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 charge?

  A point charge of +Q is placed at the center of a sqlhkeb sl.f6qur j5/--a8xew4uare, and a second point charge of -Q is placed at the uppelbras u xe4 8-qk6fjlw/eh.- 5r-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 =1ih3her* qu:ytz lg-1 -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge geuh i3l-1qz1 rh:yt*?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 dl(.gj8 :fc-cx:fhcze v. jme4,dfw- = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha-,j wd-8g:(ecfm e fjhdc4 cf.x.l z:vt is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.r3ek oo zb) curj+c08w .f:yt50 mC are placed at the vertices of an equilateral triangle which measures 3cjwr.5)fu0+:o8y ore3 bkztc 0 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q agyyz2 y8hibyz/+lr9y q l/, 5koe3i0and +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 electrostatie 92k yi 5/blz oy8+0ylz,3gyqir/hya c 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. Where ontav dg 51lzgs9kb))bp2jr9 r1 the x-axis can a third 1tjp1ak9bzl9 sr)r dgbv) g 52charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and c0ccfoxt. 3i0l s,c:kaharge -q is placed at x = 2a. Where can a third positive charaso l3cki. :c0f c0xt,ge +q be placed so that the force on it is zero?

  A copper penny has a masq5wjzlb7)8vsw;eut * s 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 thg+7+ dqwcf9jkdg *v+ce force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the prgck* fcqdj7wg+ +v d9+oton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thi5v g1kk-8nmu nvzl0 3reads which are 30 cm long. Both are given identical ch5zkn3ngu vv ml80i1 k-arges, 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 axqexzch 7o 31y;d,3io charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from t;dx3i3eh1q o7,c ozyxhe nucleus?

  What are the magnitude and direction of the electric field at a distancl m5of sp71rb3e of 1.50 m from a 5 mo 73s5r1lfbp0.0-nC charge?

  A 5.0-C charge is 10 m from a small tes( 0n mtdxz xdps85xp)etp+: 5gt charge. What is the magnitude of the elec nedd5p5 0xz(ms)8pp:x+ x gtttric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is62 s+gtkcwh oy1cc;f. the direction of the el1;sw +c tyk.c foch26gectric field?

  A 5.0-C charge is 10 m frodaut/r p2+,: sw5jcpkm a small test charge. What is the magnitude of the force exp, +aj5k2t: upp /dwcrserienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3k-3jg*4+jh , rqv6l l bosnxv,.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway bj, nj4-3bsxvogvlkq lh,*6 r+etween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick arvjvvle6cno8.5 1 y;xnd a -4.0 mC charge is placed at tcny e5 v8j1xlvvo.;6rhe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markpl ;posf7t( 3m of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zeops7 ;l(p ftm3ro?

  Two point charges of +3.0 mC ank6s4,2y;8 aoqu co czid -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at t,qyc2o;sa6k 8 iou4cz he point midway between them?

  Three 3.0 mC charges are at the three corners of a su bl:87d-dnn w+r tb(oquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Filnuon +7 d rwbbd-:t8(nd the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plawp 5tsfq1lx b/s ;c6d(ced 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 6dbwx(l1t cf s/p5;qsfield at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform e;(j2i4 p *d) fckzwzdblectric field.jdkc p)iw2* zb;z d4f( What is the magnitude of this electric field?

  A particle with a charge w/ w8l q*jrof,(nck (lof 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 mass 0.120 g is placed in an electric ;d.rwnn.0:aoq + 1m,9icq n)ulemxyf field of 6000 N/C pointing downward. What charge must be placed on thn.iqenx;,: c nr)9 0fla1 mo.dy+ mwuqe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bm3s nvnu42baervs(h 1/,/pgwk ,f /mtall is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric/v 3,aks(usmbp/ vwnt2mrfg1/ en,h4 field?

  A metal sphere of radius 10 cm q( .x 7jckv ge+5ihb; 33diijscarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfachi (7si i3;ec5.gdjb x+k3qv je?

  A metal sphere of radius 2.0 cm carries a charge of 3.0csh4(076vknfk rk 3nl mC. What is the electric3 r0kk 6hnfv7lc( ksn4 field 6.0 cm from the center of the sphere?