State the law of conservation of electric charnx0lm7y.xxkzc;qxi/e e v( - 2ge.

  Is it possible for two negative charg 4y d ctlwuuosk;q nzj/*3:s7(es to attract each other?

  Is it possible for a positivewuv9 .oy 46so9s1 rrfi and a negative charge to attract each other?

  A glass rod is rubbed with avm51m xn *d u0.fvsofgsx8q 12 piece of silk. During the process the glass rod acquires a positive charge a.s8mxf1dsvqf gmu n5 0 v1ox*2nd the silk

  A proton carries a

  The model of the atomqz5 s/7xu75m ,ye 7h8fmdc lrv shows a

  A neutral atom always hasewo,7xara .s9n* fn h7

  An atom has more electrons than protons. The urnf0s*547w 6ihimtu atom is

  Materials in which the electrons are bound very tightly to th8k0 ksm4a ku0ol 5sq6zbv2z1l e nuclei are referred1qvz o80szu0 5ks l2bml4kka6 to as

  Materials in which the electrons are bound very loosely to the nuclei and can zdma f pr7j)/ah w(lw-5*vw +mmove about freely within the mateawf/*-wlv(hjwmp +a5r 7)zmd rial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. T-yijdzs,k 3fu(vs c83he end of the metal bar farthest from the charged r-38ku3 js v(cyif dsz,od will be charged

  Sphere A carries a net positive charge, and spyv kwh8gem v(l0/w49g here B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is e/wwg 98h( k vg0lmyv4grounded. Which statement is correct?

  How can a negatively charged rod charge an electr n:3thdb+ib5er5z 1unoscope positively?

  An originally neutral electroscope is briefly touched with a positively 0bz4 q/bffei8 1:i9bc jmn*g qcharged gla b/ q0bzcinbfej fq:*8i 1mg49ss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively2zjxy xyo,xd 3 7lcclgx 6 2.bk:3hi:v charged glass rod is held near it. Aftg7xb2,clcl. jvo x xhy2xkz:63d i3y:er the glass rod is removed, the electroscope

  A positive object touches a neutra9;quoyvkvm(p 1n :ck4l electroscope, and the leaves separate. Then a negative object9yqk:c4; 1vuopvmn k( is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pla-mo i7o54 liznu:fx4 vj.2hjwced 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 object. At no time does either ball touch the negative object. Whz4.v oh:oxiw-j4i 5u7m jnf2lat is the final charge on each ball?

  Charge is

  What are the units otl69lvk lxcr w.rx+,5nr h1a(f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separator/ xf4u *5624b ze hmcbzpb)ped by a distance d. The first charge is larger in magnitude thc42 bb)/ up5opm r *6zf4zxbehan the second charge.

  Sphere A carries a net charge and sphere B is neutral. Tdj l6p 2-v pd-)f0amcbhey are placed near each other on an insulated table. Which statement best describes the electrostatic forcebaldm ) -0pp2vfj6c- d between them?

  Two charged objects attract each other with a certain fq9+mrexta g8 6orce. If the charges on both objects are doubled with no change in separation, the force between8 ger6t q+m9ax them

  Two charges are separated by a distancu(47o:ub,i2ng y amjp e d and exert mutual attractive forces of F on each other. If the chargemb4 ,7u2opug( an :yjis are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects (/k7gryxumi(g ar- : lattract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separa(ima/ r g 7-:kr(lugxytion 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.xy91pss,,q j4 yzae;i What happens to the magnitude of the force on the proton if a second electron is placed next to the first electroneya; sy 9q,z4 jpsix,1?

  An electron and a proton are separated by a distance of 1.0 m*jdn7q* *y7)gfxcojr . What happens to the magnitude of the force on the first electron if a second electron isf d7qg*) oj *ncjxy*7r placed next to the proton?

  An electron and a proton are separated a)klx-t0i0s/ yl;cu d by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.;0 i xuadl)/ kc0-yslt50 m closer to the proton?

  A point charge of +Q is placed at the centerzjz5v+jp1fbxn;l7 w . 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 is the magnitude of the net elep+xlfj1 z7vw;5b. njzctrostatic 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.r :xdej,oennt+gs2c)6+ s r2 ev2yfv4 When a second charge of +Q is placed at one of4sgexvv2frdrj)n ,yens6:oe 22 c+t+ 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 vecxyj e2;uu vf0.tor?

  At twice the distance frp-st ti71 8 wee9m7ofs,jgep m-) kti4om a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between ; hs.pjnwkvm),n 8pmq+ 9ti5la negative and positive charge along the line joining the l)+8;5 shmpvqw, .tmnpk9nij two charges?

  Is it possible to have a zero electriqj 5up,tbb;oif.i9s* c field value between two positive charges along the line joining the twoo t9j ,ib5up.*bqis f; charges?

  Electric field lines neasl gzh(gxfu+s4n-06 jr psitive point charges

  The electric field shown (5cge p0bfi c4zd x;.p

  Can electric field lines in57y ooe:u/ laytersect in free space?

  A solid block of metxc f9 l5wky,jrj.tr3b ryi66f r,9z.yal in electrostatic equilibrium is placed in a uniform electric.69,.bc 3wf yx zr ,9i6yjlr frt5rkjy field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere- l7sy4v 6vptyu(bo+t and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway-(+ov y7uy 4svlptbt6 between the center and the surface is

  A cubic block of aluminum rests on a :trcy:hpw c-rw+4, z ;oighoje op+/4wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the chargepwgco;4yjoctr+- /h +4o hweizr :,:p on the block's top surface?

  If a conductor is in electrostatic equilibrium eo t,u/( mk2o .k93vsbhpmok 5near an electric charge

  A positive point charge is enclosed in a hollow metall 4(erqwwo d;)pic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly qpdrwew;)4 o( above the hollow sphere has

State three properties of conductors ft / iolvhn6x;y z(3i0in static equilibrium.

State Gauss's law.

  The charge carried by one elec 0oa9iyy,ucm1hd1 hd7tron 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 charg0mf wnouwi119gxt1+ sxedo 2 6e of +2.00 mC. How many more protons than electrons does this pieus1w+1x6dogf mno1wi tx90 e2ce of plastic have?

  What is the charge on 1 kg ofhbv6(a(13pmj iq ns1r protons?

  An atomic nucleus has a charge+tzwqp7 y9+lb 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 4iv*prkho8z/hfqv2o 7 h53wy and -4.0 mC, respectively. What is the magnitude of the electric force between thepf/v3k 84hr7yvw q25zi ooh h*m?

  A 1.0-C charge is 15 m from a second chamgx*wx k 644u-hrja1 zrge, and the force between them is 1.0 N. What is the magnitude of the second 14x*w ujh kg6mzr4- axcharge?

  Two 1.0-C charges have a fvh(rw;6l yct+ue,( vgorce between them of 1.0 N. How far apart are they?

  The force between a 5z pg9,v2 xzvmw /dezu0 au(;a$30 \; mC$ 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 qyw 6- jcuxf 8)fjf3m21.0-N force. If they are movey3 f fmx2w j-j)c8fu6qd to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2z re lv ;ug/y+ m(41ymiuxyp8(.0 mC are placed on the x-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 magnitglzp1 /vi;x4+y(yu 8u mrme(yude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at s2e2 (kpbdg0hthe 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 epb0gd2h (sk2 electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC gr dg*kc.+p+oe8a 7hzat x = 1.00 m; Q2 = 3.00+kd *ez8ac. rg7+goh p 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 square, aowy e p) xkq-s1a- ti7x;1bjz/nd a second point charge of -Q is placed at the xbowi) k1;sp -7qx/ 1t-jyaz eupper-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 nC is at (0, 0.10 m)u4pn c:zz3p0s9x9l qz ra,;2oipu os3; Q3 = 5.0 nC is at (0, 0). What is u: rz32ai9lsu o 4x,09zqnpcos ; pp3zthe magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is9(lf o7v)93kc v j rv/lhyk-ox at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direcfyxj /-vll9v73k 9(oc) hr ovktion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices cxt uv 2b6w./fd; jw.wof 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 cha / xjucwt.d vbw6w2;.frges?

  Consider point charges of +Q and +4Q, which are0o)vgkefkd3o*c 9 n5qk j: m6k 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 su jnk*6 :q9o0kkdg vefm35 oc)kch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a uucjn1ktsp d ;z83li5e38sp3+9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net fosz3e;k 18pucu83 sdi3nl5p jtrce on it is zero?

  Charge +2q is placed at the origin aazizyrnb* -.i22 -v7 o)rzysdnd charge -q is placed at x = 2a. Where can a third positive charge +q be )72.y- izvonrrz sa*i b2 d-yzplaced so that the force on it is zero?

  A copper penny has a mass oowl h fg36yh m31t3o-zf 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 gravie6l5ojrk,403 7vqba;qwol 8ljp*l;qc m-x xkty by the attraction of a fixed proton some distance above it. How far above the elect5;a78o6kl 0jeqrq pk* ;olbmvcxll-w4 ,x3jqron is the proton?

  Two 0.20-g metal spheres are t75f),joi h oh08cs 08obt yazhung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them8 j87o hbai,cfs 5ty) z0hoto0 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 electri6k,-uxfrx 9m 5qqo 1tpc field at a distance 9qo,rq1pxk6f-tu mx5 of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distan,*th4 ivcqa9q k7u ) fbwr5.iqce of 1.50 m from a fq*wh4. ) 5kab97tqcr i,ivuq50.0-nC charge?

  A 5.0-C charge is 10 m from a smb-duzi8.: dk6ugqhwno0ub;m*z3d x- all test charge. What is the magnitude of the electric field at the location of theq u:i; 6um.uzohk3g8 db nzdd0- xw-b* test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of q:ua41tv + )ukn:jhzq 7 kvu)gthe electric field?k+1u4qvuuj h v7)k)g: tazq:n

  A 5.0-C charge is 10 m from a small test charge. What is the xm 7gh/9 dj)ssmagnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?7s m jhd)sgx9/

  Two point charges each have a value of 3.0 C and are separa ze/v ge.i7d: o2dfa*zted by a distance of 4.0 m. What is the electric field ata2g 7 veo:zf* .dde/iz a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm m s(sd8 )c6zyif 4xhj-sark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fieiyfz4ss jcx-d 8)6(shld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metplw/mz 4n) fk4cj 0alwvco/4.er stick and a -4.0 mC charge is placed at thcp kol /4w4mc/vlna.0 jzwf)4 e 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 uw oan6gr 143yand -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poinur4y31w 6oan gt midway between them?

  Three 3.0 mC charges are at the three corners ow5hcf+ * kz(* ,aa(4 .qgfoi-dvxon ukf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sa .(* *xcih g+fn,zkvwkudqo a4of( -5quare.

  Consider a square which is 1.0 m on a side. Chargyfg8+ ym ei 0(l5tjqa8es are placed at the corners of the square asj8eimy (l y8g+fa q50t 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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when* tp4(c v(ht2tc2))v.l d xmyer5lm vg it is placed in a uniform electric field. What is the magn5 2lvv.)mldvcr xeh p)ct tty2(4g (m*itude of this electric field?

  A particle with a charge of 4.0 u4q k0 5mbfma1k8ypivf5lrj2- m 7(tsmC 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 el9zk oeksa0 480 sg/lacectric field of 6000 N/C pointing downward. What charge must be pl k als/900sg4k8ozea caced on the ball for it to be suspended?

  A foam ball of mass 0.150 g cax7 wa1x,exu* in6dy+n7s xw1 urries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are a1,e1i 7wx6nd sxxy w*+xun7uthe magnitude and direction of the electric field?

  A metal sphere of radius 10 cm cnv31jw i1:vop-l-tt fh z1)jp arries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spher:o1zh-jl3 n1)wjfpv i1p tt -ve's surface?

  A metal sphere of ras(5og8n i-dcldius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6- c5 doig(8sln.0 cm from the center of the sphere?