State the law of conserva9j 9fi2th0xz wtion of electric charge.

  Is it possible for two negative cha/t iu 4j/m7cdrrges to attract each other?

  Is it possible for a positive and a negative charge to attrac-dpi .s1 bz5xq/u wz/b6hkix /rf 7f8xt each other?

  A glass rod is rubbed with a piece of silk. During tnmy+dk6d6l jy8t( 9) o4b odalhe process the glass rod acquires a positive charge an6k ol9 y)(6 l8t+d4yjobmdnad d the silk

  A proton carries a

  The model of the atom shows1d)jx9h v4 2ajsv0f vh a

  A neutral atom always haw 7i8xo8)hdzi s

  An atom has more electrons )w3 7qeinh1bh7nt 7r5o ornx4than protons. The atom is

  Materials in which the electrons are bound very tightly qy7w,z2q unc a3d:,xato the nuclei are referred to ,uz ,a27 axcw:n3q qydas

  Materials in which the electrons are bound very loosely to the nuclei and caqa m2okt,xh p)5 j)y-lcg+v h mmpf3./n move about freely within the materigm/j,p)m3 q.v+p2o)5h xhymtf ka c-l al are referred to as

  A negatively charged rod0 x 9syceumom1wm-(h( is brought near one end of an uncharged metal bar. The end of the metwo1mms(9cmx0-heu y(al bar farthest from the charged rod will be charged

  Sphere A carries a net posir -bgmd(2s ia:tive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is bri(r-d:abi gs 2mefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopk+i;hpfy *h-/btek, l91oyxpe positively?

  An originally neutral electroscope is br8oq.zmulg1xbpk f;8( z75vvwaet0 0 xacq*/qiefly touched with a positively charged glass rod. The elfeu.18bq qo k( awzg 78vc ;ax*t/m0pl5qzv x0ectroscope

  An originally neutral electroscope is grounded brief-/x bqh3f9i mi)xh*v tly while a positively charged glass rod is*ii-9qbfxx /t h)3h vm held near it. After the glass rod is removed, the electroscope

  A positive object touches a x;n 4y8 ktalo.neutral electroscope, and the leaves separate. Then a negative object is brough lx;yatn 8.4okt near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insgz:lskpa a; k5a. k7x9 . nl6md:igw6dulated 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 ba.nkdgma 5 .kwa9a :6 sdikl:g 67plxz;ll, 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 the Coulomb constant *d: behuq9fl zhg2-9n$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is /:aocaelrah0f ;:yr 2larger in magnitude than the aorl:y hcr: ;0faea 2/second charge.

  Sphere A carries a net charge and sphere B is neutrax.wpgjj3l / hd*8j6nigyxt :3l. They are placed near eachx din*hjj 3. 3lg:tjx86g/ wyp other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain: isn)0rb r wlvql/f 04c-6d rct/e7ku force. If the charges on both objects are doubled with nr l7k6einrf rtcl)0qd/ 0 :bs4/w-u cvo change in separation, the force between them

  Two charges are separated by a distance :so6 pg5u tn;mbih0v( 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 nu 5:spg mb(tvho0i;n6ew mutual forces?

  Two charged objects attract each other with a force F. What8+ re6nwteatl g 5lr1qgi*8 0q happens to the force between them if one charge is doubled, +ee iwl6 qt 51g80tngqar8rl*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 separated by a distance of 1.0 m. What happent*da6w;k6rbb 3p 2gils to the magnitude of the force on the proton if a second electron is placed next tow akr6;lgp3b d*6 ti2b the first electron?

  An electron and a proton are separated by a distance ofd d qou0g /u-doe2n0r(iu(ah2 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to hu(u/ d-o qi2 e0(ag o0nr2dduthe proton?

  An electron and a proton are separated by a distance of 1.0 m. What happenr1b6ptfig 3s an87 x.ss to the size of the force on the proton if the electron xta1i 6p f8r7 ssgbn3.is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secondicu / )*d0d btctnf24c 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 o*ddc)2 ttf 4 ucnbi/c0n 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 equilateral triangle.qxr) dd9;lm z 3.alh97r)q iua When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts l)uzd madqr q9.l39h);a7x ir 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 vect bcntz 9 l+/+qt4bw 3:0gs)0vvmjpkleor?

  At twice the distance from a point charge, the strength ocg +y:y),tsy1ubm+pk f the electric field

  Is it possible to have a zero electric field value*oge: )x3*p +tufsgyq between a negative and positive charge alonquy: )g*+s3 x*otg pfeg the line joining the two charges?

  Is it possible to have a zero electricx 6y /t;xq+puj field value between two positive charges along the lp x/tx;+6yjq uine joining the two charges?

  Electric field lines near psitive poin8 ns+1g* 4iej d9kaoqq w-y5njt charges

  The electric field shmom j f*/9r4wmown

  Can electric field lines intersec(kw 2z4uwmp n;t in free space?

  A solid block of metal in electrostatic equ+zjvy :z7li8 eilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the b8zv e:i7yjl z+lock's interior.

  If a solid metal sphere aow xg,0k4n;yi nd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the cen4k0 ;oy,gwi xnter and the surface is

  A cubic block of aluminum rests on a woodetk55 iy4tf3h sukez(3n table in a region where a uniform electric field is directedfyk3 thekuz 5tis5( 34 straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic eqtf+2c q5r*;8tn xyhrh uilibrium near an electric charge

  A positive point charge is aip9p7-a*2 pzaa kw8yenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field -2p*a7py 8p i az9aawkat a point directly above the hollow sphere has

State three properties of conductors in st i l31jz(6kp4 3cyibroatic equilibrium.

State Gauss's law.

  The charge carried by o(5vy.n al k,lkne electron 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 of6r4u1jr38v j ziqgdg4 +2.00 mC. How many more protons than electrons doesru v d3481izj6j qggr4 this piece of plastic have?

  What is the charge on 1 k,1mve1wox-s2 k cg+fg1px:qeg of protons?

  An atomic nucleus has a charge otki :uak2dy.u/)gm w o/j2fxv6 cu-e/ *u9owlf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, havcb;30rcu4b o 3was8 yfe charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of u 3ywb340fc8bcra os;the electric force between them?

  A 1.0-C charge is 15 m from a secon)mnq :*u 9ymzd+7 *kycw:p ysbd charge, and the force between them is 1.0 N. What is the magnituywy byq7dp z c+:m9ku*:*mn) sde of the second charge?

  Two 1.0-C charges have a force between them of *iz8pal 20kk2h*/xa; k: wrjofn7hqs1.0 N. How far apart are they?

  The force between a 7 n b ,(*ckdt5ids(sxo/yzx7h$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2..b)l*sjb jm:m f4ga,f 0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric b.:,f gsjm)4abflm j*force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thwzsp n4v -w78re 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 magnitude and direction of the elect7-vwwz8 spnr4 rostatic 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 2slzj k5 3m:0(*2ixszbs zjn oat 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 5* bsk sn 0zljm(xj:32izo2sz at the origin?

  Three point charges are located at the following pou sz (f ukc 4jl--e62(-dqaqrnzz(5sh sitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the mezdjuzq fa26nc5rs(u( s(h-ql- -4kzagnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second p td: 86cp;3exaet7y rg8g nh;ooint 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 magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-lefh3dr t oe:gactyng;87p6 ;x8 et corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q 9jg(tybo3h; e3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thj hbg93 (;yotee 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0 93dr ;vj7 w egl4(y8/cvqhhgy); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net h4qc r/ (ghgd39y; evvly jw87force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ozh5m gu+6yp0y f an equilateral triangle which meas 5pyyzu6 m0h+gures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargesstj- v )z 0 f8-:il9ssbya6leu of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the twbzs 0l8yif-v: s9 tul6sjea-)o 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-C charge is at (vt2xo3ak, sy x = 4.0 m. Where on the x-axis can a third charge be placed so the net force toa(syx,3v2 k on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where canc; c/ls12 n(sj aox3dp a third positive charge +q be placed so that the force csdjo/1 cnap23lsx ( ;on it is zero?

  A copper penny has a mass of 3.0 g.9q1tifoh9w-i4n) xn5x2 .es7zur- sbtl ; db i 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 attraction oh4sa dxr/(6ltf a fixed proton some distance above( x/ars64dt lh it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poic -wj gim(h07+ imv1u 8z0qbagnt by nonconducting threads which are 30 cm long. Both are given identi- u a hm7ibi10 gjqczwm8(0g+vcal 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 a charge of +40e. What is the magnitf8+exmna 6yz.0e to ,xude of the electric field at a distance of 1.0 m from the nucle. o8m +,exax6 zfty0enus?

  What are the magnitude and direction of the e 73,,mknqujto8 yd.ym enmv+6 pq:l,mlectric field at a distance of 1.50 m from a 50.0-nC p+tndun 7 mm8qm, vlo,j.:q,k6 emy3y charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ) z -ljk*jfch:electrihz -jc :*k)jlfc field at the location of the test charge?

  A 5.0-C charge is 10 m from a stc,0 jx(uk6f zmall test charge. What is the direction of the elec(txfz, kj0u6 ctric field?

  A 5.0-C charge is 10 m from a small test cdbw)j gh1j5-3nlw -f oharge. What is the magnitude of the force experiencedd31whf )on-jj w b-l5g by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance0 y7zq7 / f8vu v0nn*lrek(uwh of 4.0 m. What is8 vu/* f 0( nh7z7qnkweyulvr0 the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm ) lc ;b93khxsimark of a meter stick and a -4.0 mC charge iik9;h3blcx ) ss placed at the 50 cm 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 v93d t:scz9k0x(a)1audnm g w 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 zero?mzt v:0sa1n)guwx(ka9 dc 9 d3

  Two point charges of +3.0 mC and - *55z,uv2xpnw(f* vyxfvbez9 7.0 mC are placed at x = 0 and x = 0.20 m. What is the m n9(5u expzx f5yb,z*vv v2f*wagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of mfq7.38 bzmlw4:jx gva square of side 0.50 m. The last corner is occupied by a -3.0 mC c4xbmq l: fgmj.w78zv3harge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are ple1mmquy3+ dj a- )6ghl /dk/akaced at the corners of the square as folldkjh/1mul e d6)+k-a/ym gq3a ows: +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 it is placed in n ot+77l4toa4 qmu f/aa uniform electric field. 74ao /ton q u+4tafl7m What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a 5w c+l3xsfrb )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 iygw m ;icpfs6p8(6 em4s placed in an electric field of 6000 N/C pointing downward. What charge m66ycgmm( i;w p4s8fpeust 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 plgn g5 1to j0mvox +ukzs/d78+waced inside a uniform electric field, and is suspended against the force of gravmk 7o go1w+5+xtnjzsv8 u/dg0ity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.ql,zi70j ;,5 m lvyiqw0 mC. What is the magnitude of i; ,,0 w75jllyiqzqvm the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge o(a6aho l/.5yj vywhl) f 3.0 mC. What is the electric field 6.0 c h l6 .(jl5yahawv/)yom from the center of the sphere?