State the law of conservatpy wsym *gqg2t)mgwda2qo3 5d;nd0 -+ion of electric charge.

  Is it possible for twmrj1t6lxp(2 a5p9rih u4c e+vo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othe)y1cii 6t7:n0yay).hxad k - c ,z4zqnhxt ,mar?

  A glass rod is rubbed with a piece of silk. During c mssogji, r0pcehvh6i4 64r q9):ln3the process the glass rod acquires a positive charge and thsmh r3oj,0 ci:9r 6lcs64i) vq ghnp4ee silk

  A proton carries a

  The model of the atom 6(awqou/c wq ew0ko; 9shows a

  A neutral atom alwaycz(fc8;myuv 9 s has

  An atom has more electrons than pkn1-n5.kdnqslgg,v7i/:o l n 8 r je:zrotons. The atom is

  Materials in which the electrons are bo2c fxed3v hosbd03* p-lc7 2zgund very tightly to the nuclei are referredbdefhg xc*-37p3 20cl s vzdo2 to as

  Materials in which the electrons are bound very loosely to the nuclei and can m temqzd4lw of r4dl*o36n9:b( ove about freely within the materitw4(4zqnd bo6d*re of l3ml:9al are referred to as

  A negatively charged rod is brought near one end of an uncharged metal barjc,gf z /th(ui +l(hl(0 ,lttp3gix :vr9w 1az. The end of the metal bar farthest from the charged rod 0zh (f/t,3uwgxg((i r,cvtlta ljp z+:1 9lhiwill be charged

  Sphere A carries a net positive charge, and45 ib-ct.qm.xe,jtvwa 1;d l cr/ l(qf sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stqr1l(4.l;qwft ,btv ac ec/5jix- md.atement is correct?

  How can a negatively charged rod chargenb 6 1f-3 xzd2irgk+ ypguq3l+ an electroscope positively?

  An originally neutra bb4 1q e1l.de(gk:racl electroscope is briefly touched with a positively charged glass rod. Thdb r.14kge e bc:(q1ale electroscope

  An originally neutral electroscope is grounded briefly while a som.8s y,kd1e positively charged glass rod is held near it. After the glaskym8eo .1 ,sdss rod is removed, the electroscope

  A positive object touru.) 6yx j u;kn z71cvv6x mext4az,0wches a neutral electroscope, and the leaves separate. Then a negative oxy6r4c, z1 vvk7namt. ) juw6 z;uex0xbject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object u7fsfae +kx+fosxyz )- 9uh2,is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A+eysf, u sf zxk-a2h9xuf+7)o 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 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 t z( qnry)v6qx*b5*pdlhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thjim w 8q 5cczso)qh aq-505,hvyyo:f: e first charge is larger in magnitude than :y)j ozohqvic:5 85h0m fsqyw c,5aq-the second charge.

  Sphere A carries a net charge and sphere B is neutral. Theylr w6a0+ptbxqk-oq9; u61mz k are placed near each other on an insulated table. Which statement best describes the electr-kzpo6wblq+ u9m; 06xkt1raqostatic force between them?

  Two charged objects attract each other with a certain fo qgf- cuo(, wo28;ybuarce. If the charges on both objects are doubled with no change,u8a-;b(uc w gqf2oyo in separation, the force between them

  Two charges are separated by a distance d and exert m *zx/- -ddpr +w9s(bbyijro+ eutual attractive forces of F on each other. e9sid-o/ d+zj xbr*( wrp-b+y 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 zjoxz9xdz(wos vm 9 7qx*vro,; ru-1/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 orig9rsv1u, zoxzw*(7ov- z x9xrd q;oj/minal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens t-yk zyp333yjio the magnitude-3y 3pyzykij3 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/bbo3 9p,wqkptl 3 9gr.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed /o9r g3 t9bqwbpl pk,3next to the proton?

  An electron and a proton are separated b +ym(acit)/zi d2pgu.l s05 eoy a distance of 1.0 m. What happens to the size of the force on the proton if the electr+c )temz o0i./l2d5uais y p(gon is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whe y7ueag 98/c6ekk xq3tn 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'euxa7 q89 3/y gtec6kks 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 triangle. Whenodik+ieh4 3-r a second charge of +Q is placed at one of the triangle's vertices, an electrosi e4i3-dkh+ rotatic 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 ve *fhcv6heg) 2v9qpa1llz s1c; fjub72ctor?

  At twice the distance from a point charge, the strength of the ur ot ,ya36q3q8ct;xo electric field

  Is it possible to have a zero electric field value b3dew5v 1h l3 q bo. . zgoxe1ecf0(u;wcji-:cketween a negative and positive charge along the line j501h 31 o:e.(b;wk 3 eiz e.xc guwlocdqvcf-joining the two charges?

  Is it possible to have a zerqc84x4gx:y: avl 8x0ybus6wt nq(w5nyb*: vo o electric field value between two positive charges along the line joining the two charges a0 nc wlx*8q (5 v xwyoxg48qy:ns6yt4b:u:bv?

  Electric field lines near psitive point ch( rzjb(epu0m s khmyrr0,.19z arges

  The electric field shulj0c a(:1l pvown

  Can electric field lines intersectqtkav k)b4;tpc a1m4 / in free space?

  A solid block of metal 8 u+;/ wwyyvdbin electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's in8 y/w+yuw;dbv terior.

  If a solid metal sphere and a hollow metal sph-yuq9e;r5otp, umlm 8 ere of equal diameters are each given the same charge, t5 m9eq tuy,m; ro8-ulphe electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a w2v:b 5m6al)a j,mpim *hy zw+aooden table in a region where a uniform elv: iz a m62+w)hjmlamyap*5,bectric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in y) skbuzdamjzvyq:eb +-f;0- ,o4o- melectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is +bxfjdk /0iw1l gro+8 grounded. As compared to the case without the hollow sphere, the electric field atxio/r+bkd0+ j81gwf l a point directly above the hollow sphere has

State three properties of conducto +ta2:eq0y4wjzc.ht nrqx :ev*4(g sxx,j4cl rs in static equilibrium.

State Gauss's law.

  The charge carried by one elect6zruq(ownte5z f i58*ron 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. upt0-vigqm d99ddls5za-9(v00 mC. How many more protons than electrons l z09tmad-5s dg9-pivuv9 q d(does this piece of plastic have?

  What is the charge on 1 kg of pro2r-yp2k ruq 3dtons?

  An atomic nucleus has a chargez6 lysk (dg3wicfd54 s:*1eap 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 values of 2.0 and -4.0).9no9u o* z.wx nx9ph+rpwmf mC, respectively. What is the magnitude of tu*oww pxfh9 oxn9 .p9mr+z.)nhe electric force between them?

  A 1.0-C charge is 15 m from a second chaq8lx21c3 zv+ypy sp ,grge, and the force between them is 1.0 N1v+ z ,qpypgyc8s2lx 3. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are th :4 70jiutiihley?

  The force between a bd) s; p2bgk7a$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparifkbs4 r6qm6 8ny i.x1x(n xz2t, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between this6(rzk4 qn8 x6bx 1m2f.i xnyem?

  Three identical point charges of 2.0 mC ab(8tc 4puhzgl3sq-j6ondf*aa + z yr3pdw( 66 re placed on the x-axis. The first charge is at the origin, the second to the right at x = 5f6p d b6 sudl +*a g(t y3oqcwaz3(jphrn4-86z0 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 txt(42sm/s . d/+,fevbol pc ajhe x-axis. A charge of +2.0 mC is placed at the origin,./jbfs4+cp adl (e,xsmo v/t2 -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 the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC atj-dgp 52k 4l)o;71 glbejchjk 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 ooplh kl47;2bd- kec5 jgg)1 jjn the 3.00-mC charge?

  A point charge of +Q is placed at the center o0th ntn wm+,f9:aj*lgf a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0mh0fl+aw j,t:9*gtnn 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 (0x1 ;ozma j6v+y.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wma+6xo z1y; vjhat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.vn6ncq 0d4t a2,v y1sc30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dtvqv 16ynn4c ,sc 0a2direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.07s1yo8r/ qp yt mC are placed at the vertices 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 the cos1 /7try qy8pharges?

  Consider point charges of +Q and +4Q, which are separated by 3.vzt / ny)w9 bz(;ue0mc0 m. At what poin;(z/yw0)9c btven uzmt, 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 zero?

  A +3.0-C charge is at the origin and a +9.0- epn8k-w*j1)fymkq o1 C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero qp1en)k of-j y8mk1w*?

  Charge +2q is placed at the origin and charge 1jle4e x3sj6v-q is placed at x = 2a. Where can a third positive charge +q be placed so that the fo esjvxj3e6l41 rce on it is zero?

  A copper penny has a mass of 3.0hg0qqfr:zhrdi 5: 8 h(ilv u/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 agaim8h 3u26hwsx0lmsm io*t(rf6nst the force of gravity by the attraction of a fixed proton some distance above it. How far abovrto8 msh 2f 3lxiu6(swmm0h*6 e the electron is the proton?

  Two 0.20-g metal spheres abjfi3r5.cyq6bi .h z y h1/- ueid9j+dre hung from a common point by nonconducting threads which are 30 cm l6hb r 3ei9 -zi 5.jiq1hbd+yf.cu/dyjong. 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 q*vqlejx ww .1 l: z8ahgi/q53:fj)hsa charge of +40e. What is the magnitude of the electric field aje) wl a8fg ih3*qq zj:x:hq vl5./w1st a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.ppumi -(,0r.bzqo -k5cnkoj; z,3c gp 50 m from a 50.0-nC cjzg zc-k,cpb no mp0 r q.k(o3-ip5u;,harge?

  A 5.0-C charge is 10 m from a small test charge. What is the96z rs /ogr00nn quaz1 magnitude of the electric field 0sua6o0 nrq9nzg/ rz 1at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chargc5 u5skdilj8h+ +n kp7e. What is the direction of the electrj s5 nhukkd7c+8pi+ 5lic field?

  A 5.0-C charge is 10 m from a small test charge. Whr29zwu nlu7rvgt2 .b 1at is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the 2l7zrun r9 g1wbvt.2u test charge?

  Two point charges each have a value of 3.0 C and are sepge8i h01ckzr9arated by a distance of 4.0 m. What is the electric field at achi r891e0kgz point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC idm8x py++xw .charge is placed at the 50 cm mark. What is thexi m+ wdpy8+x. electric field at the 30 cm mark?

  A 5.0-mC charge is placed at *vt aakm-k1u9 /qfm, wthe 0 cm mark of a meter stick and a -4.0 mC charge is placed a -* fkmt9qaavmw 1k,/ut 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 m3x9 g+kuge d)iC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fielxkg3)idu+ g 9ed at the point midway between them?

  Three 3.0 mC charges are at the three cornerl*yu ;0qgg ju5s of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eljyu0q;5lg *gu ectric field at the center of the square.

  Consider a square which is 1.0 m on eckei/c90b l 8/mq2mda 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 mC at (0, 1). What is the magnitudlcm d /q9k0/ bc2em8iee 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 pl4 o2++(cgywhzk7pbq6 z igg(uaced in a uniform electric field. What i+w(gg pz 2uob6 4i cgqhk+(y7zs the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of ( k9h l/ gqkq57wjxngd6( .emq$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120(7o-vf4xnjt-qvxtg8 :b d ,puigd7:y g is placed in an electric field of 6000 N/C pointing downward. What charge must bedqyt8-i duxfgo7x7g p,jbvv:- : 4( tn placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 24rqr(u4j1ard:u zou nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. r4r:ouq 41dz (2uarujWhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitu/j64b7 laiuht) ,b.jmoz k0m5ozc ph:de of the hjbt .ozu z im7c4p0lba:o6 j5h/k),m electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC,01kwpr+k0r szam 3lz . What is the electric field 6.0 cm from the center of the w30mars pk1+rlz ,kz0sphere?