State the law of cony5(-05rf;d8c z9va j bcgzcl sservation of electric charge.

  Is it possible for t34)p7yi oylb+ jsd sx4wo negative charges to attract each other?

  Is it possible for a positive and j*pk 5f11,) ksthbh pda negative charge to attract each other?

  A glass rod is rubbed with a piece of silk./-2srvu sob/ 5k. nieq During the process the glass rod acquires a positive chn /er-k qivs b/s2.ou5arge and the silk

  A proton carries a

  The model of the atom shows aoz:r.; 9a di,jgyb ib(

  A neutral atom alway69 ta. +w;s cw6ic;du ewl-duus has

  An atom has more electrons than proto yc;dp (3(njdnn 6i3x0.bqtbcns. The atom is

  Materials in which the ettz)uf.d -uoiimd,- / 9)cj mjlectrons are bound very tightly to the nuclei are referred to dz-, d.t-m)j /ftci iumj9o)u as

  Materials in which the electrons are bound very loosely to tzb a5 jk jw4)smpyte7m/9hll.*((v enhe nuclei and can move about free)*4 9wkjb. l mnv(y5pj/st(7a lehmzely within the material are referred to as

  A negatively chargedvy2(oe p/n c-y63z/sb(g4ifdp tayro 5h9p 9d rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest froavfh2(p6dyropo9d/5 y(b/9 ey z4gsi3npc- tm the charged rod will be charged

  Sphere A carries a net positive charge, and-hg+diy7qm1 w dxt* 3h sphere B is neutral. They are placed near each other on an insul3q7d d mxtg-1+*hh iwyated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelelcypipi5 e2g s8d((ldi+q27y?

  An originally neutral electroscope is briefly touched with a positively chckrgz.9w:r 6 ue3z)dkarged glass rodkdw6e cz 3.9rz:k)rug. The electroscope

  An originally neutral electroscope is grounded briefly while a positivlu /dw;n2y63p fe o:3 zin6s g41ofydkely charged glass rod is held near it. After the glass rod in6iozp:fdd6/w3nes3lk ;y4 1 2oy gf us removed, the electroscope

  A positive object touches a nen x7+g b:irlikos+;+fd;8dymutral electroscope, and the leaves separate. Then a negative object is brought near the elect +8f7;;rixgb:lmdiodsy +kn +roscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral/mmuainv 0 -z8 metallic ball rolls straight toward the object, but stops befzn-um a0/vmi8ore 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. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb con *9-y*ys ufr,oap81murci;+v k5gw t ustant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chfa.gcwdh 4vv n +8e0r*arge is larger in magnitude than the second chargecr80vnv4*.w fde+ gah.

  Sphere A carries a net charge and sphere B is neutral. They are placed ne/da9 sefp43v uar each other on an insulated table. Which statement best describes the elecu9a/3 se4vpdftrostatic force between them?

  Two charged objects attract each other with a certart: 76jvmvhs1 jtn-(cn6 b9 fiin force. If the charges on both objects are doubled wittn1j -6t( jnvi 9s6mrb:h7c fvh no change in separation, the force between them

  Two charges are separated by a diq juj ,,0k0 zh*;sml+f05ksvkm k1zvnstance d and exert mutual attractive forces of F on each other. If the charges are fkn+j 0sj1k*kzz qm0;m,v,vl ks h50u separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. l-hionag+n:wc z(o xj46v3 ) astbv :, What happens to the force between them if one charge icx jin+ h: v:(nt4g3zolbw) -vo6sa, as 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 separated by +d2yp sqqjf 91a distance of 1.0 m. What happens to the magnitude1d9q+jy p2sq f 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 distancem:: w5 fqn ec9d-bp8r tyda+k3 of 1.0 m. What happens to the magnitude of the fn3 y:dbm9qe t5 +w:cak8p-rfdorce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separakv ;k8t 7bfp1dted by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50k1vk 87ftbdp; m closer to the proton?

  A point charge of +Q is placed at the center of a square.c7wpoli q pobyl5 pohki018 y;d39 )3k When a second point charge of -Q is placed at ondi8q k 91w)po; yo5oyi0 pkbl 73clh3pe 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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the cen cf0 4getuwvcw 3qc9ppd3 q,t k9ep d;3br62(jtroid of an equilateral triangle. When a second charge of +Q is 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 chargev(t wed6e 3pbqp tqc,jwu309 42fc;grk3d 9cp due to a third charge of +Q placed at one of the other vertices?

  Which of the followib.gt) cqr+ itn 9g)c9 n(xfi2qng is not a vector?

  At twice the distance from a point charge, the strength of the ele(1jz( yu0fhq*+hwzg lctric field

  Is it possible to have a zero electrpt fzvxn78vs*q iz+icl;3b 2-ic field value between a negative and positivzix 2tb8q fln73-i*cp;v+z v se charge along the line joining the two charges?

  Is it possible to have a zero elect rj07qq8*ju vtric field value between two positive charges along jq*j 7rtv08q uthe line joining the two charges?

  Electric field lines near psitive point c. x.u* xk nqu4;jkmx kn7rws)-o-c0j(- hggqyharges

  The electric field shdud5hq4y - p8)awob+ qown

  Can electric field lines intersect in(c 1zen;9tzvx( 1b.d9ttfoj n free space?

  A solid block of metal in electrostatic equilibrium is pljlzc)s0i0jgp lfmmmmug1 h8))1 8m 6 vaced in a uniform electric field. Give a statement concerning the electric field in the block6)cp0fm gmum1izm)mll1j 0g s) h8j 8v's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaz6l9vn)lx hj0jg6c/ a; mbr6tch given the same charge, the electric field (E) midway between theb6hvxaj9lz c0t j)6 r/g;l6nm center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifory qc;t(i wxwwy0-++h p6yzd2xm electric field is directed straight upward. What can be said concerning the ch+yp+y2hxty cd06wq x; (i-zww arge on the block's top surface?

  If a conductor is in electrostatiynw 4-x4 fl i:c 07sfthosou3tmt82v- c equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that w+qqz boax1;w(lbz 9( is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hozwbq+;a xob (ql1 w(z9llow sphere has

State three properties of conductors in st47q+ppsyi mgembvv-7;ps q3 3r; xc:tatic equilibrium.

State Gauss's law.

  The charge carried by one elo7vpjs)8mn 1yh n ce9ki/0 yw*ectron 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 m(:ony .g o1yff4+tx4 bxha/ohore protons than electrons does this piece of plastic havext x /41(f+no.yhoyfo:b ga 4h?

  What is the charge on 1 xt**j4m.rohpkai yy 09e)gtdi3-gl 5kg of protons?

  An atomic nucleus has cxcn 95rldco d n81:w;a charge 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- q*wvbazkg()o cj) .mwo2 (ze.0 mC, respectively. What is the magnitude of the electric forczg*)(aw q -ev bjook2cmzw)(.e between them?

  A 1.0-C charge is 15 m 7v tto l(i0lb/+bp1hl 8,eakcfrom a second charge, and the force between them is 1.0 N. What is the v8o l7(t,pbbllha1tkei/+0 cmagnitude of the second charge?

  Two 1.0-C charges have a force between them of xmwd,l4jrs dz*1:2d q1.0 N. How far apart are they?

  The force between a 6v8e feuppnf ei )+f/z*;y7ka6fq p,x $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2 ba/t r5jk 5sk4;vxwh7.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what xkrvw7 tsh;kj5b/5 a4is the electric force between them?

  Three identical point charamvw-4d p h;nr:0wv -tges of 2.0 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 magnitude and direction of the electrostatic force which acts on th4r-a-hnvd w 0wm :ptv;e charge at the origin?

  Three point charges are placed on tz k1y hy/d(;qgtr v+)kw tqxayo2h:9;he 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 for t qr a1;w2)t;qkzkg(yd+y9h / oxvy:hce which acts on the charge at the origin?

  Three point charges are located at the following positionsw 5()cleul1c*f f5e3kyw 59kia;bt ol : 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 magnitude of the forcei1tef *ykl)kubcl w5 ea;5lof(5 c9w3 on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a ser8n) op( dmdsu4;h (upcond 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 magnitude of the force that acts on the center charge if a third charg8p ;dsr)udnmh ((oup4e of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0n3bl g:,fw.n0z2 xuqh nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on th: x,fz2w . nlqh0nubg3e 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nCn.h0u5zc:ks pn s ys13j36xtb is at (0, 0.10 m); Q3 = 5.0 nC is at (0,z yu3h c1n5sb p.t0s63 k:sjnx 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of+)lb f3q5(lwo oif +ml an equilateral triangle which measures 30 cm on a side. What is the moqmlf(w ib5 l+)l f+3oagnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what c70cly54t mt b*f 5m18rvofropoint, on a line between the two charges, would ift5b0o c1c45m7rtv ylo * m8frt 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 th( w0;j 0uqfzite origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third ch0(ut qij w0;fzarge be placed so the net force on it is zero?

  Charge +2q is placed at the ;)y*vla1c nj.fv -tmrorigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on lvm 1nrytf *j- c.)a;vit is zero?

  A copper penny has a mass of 3.0 g. A 3k sb hyr 63q rp*4uc8uv4,rxctotal 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 t ki4z e0zh7vg+he attraction of a fixed proton some dizg704 + zvkhiestance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commoy1i mc6g)ge(nu zg*r34d 5 hblmpo :+vn point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the a bm yi5h)ggnm(u4:or+g 3dp1*zv ce6 lngle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has ziw,)v d4qne4a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuc ezvq d,44in)wleus?

  What are the magnitude and direction of t jh6 -jr1fjdj9upu) f8he electric field at a distance of 1.50 m -)pf9 1jj uuf8hd6jjrfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of2 )x.tfd4an mj4zz b3u the electric field at the location of thxzb)u 44tfmz.3j2a dn e test charge?

  A 5.0-C charge is 10 m fro fnmcthd 4 ;s5po;f6+tm a small test charge. What is the direction of the electhtd+fs opm 6f; 4;tc5nric field?

  A 5.0-C charge is 10 m from a small test c cn 4 kgbn:kc5qv4b .d4.u2macharge. What is the magnitude of the force experienced by a 1.0 nC charge c ckn4:bm.bac.4v k4ud5 n2gq placed at the location of the test charge?

  Two point charges each have a value of 3.0 C t+j)e4 n*rq+y lho x,eand are separated by a distance of 4.0 m. What is the electric fiel e*e+ xrjtn4h)qyo, +ld at a 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.*cula:ho z b zutf*2; mC charge is placed at theotbz:uzf.2 u; *l*ah c 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plbf pzo3bwfx26zx+z:ik38 cv9aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line join fz:z xb3cibo29 83p 6vkf+zwxing the two charges is the electric field zero?

  Two point charges of +3.0 jo* .n5uj3jqu q yb6k5ksq2qcl/1s)fmC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric f ).b3fc uqsq2juy kjn*q56 l 1qj5o/ksield at the point midway between them?

  Three 3.0 mC charges 7- z(k-kx ol-i; pwji w4tiba5eo1ux,are at the three corners of 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 square.oeljiut;b - ow(-xk 45 xw 1-,iziak7p

  Consider a square which is 1.0 m on a +6rclto lfj+i- 5g, igfl4w6qside. 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 magnitude of the electrifr j+4o cl6 l-qwf,li6i+5gtgc field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unrg/pnuc- fgbxifs: 7 01vl/:wiform electric field. Whabgcwsr -/i7 flpxvuf:0/ 1gn:t is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mweu7*oa-b q mk) p);asass 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 fs)n diwu-oxw.mr ,9gegi/z 8)ield of 6000 N/C pointing downward. What charge must bee-wx z8u,igo)dwsn /)gi. m9r 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 fl yvsyqr .z+.6tzb4)is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude q6s..ltr yb )4vyz+fz and direction of the electric field?

  A metal sphere of radius ekta,e (o9okhkg4. +z10 cm carries a charge of +2.0 mC. What is the magnitude of the eleka,(ko 4 .gh+9etk eozctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a char/bdxpz t72,ocbb;,(lyh rzhe d4 42frge of 3.0 mC. What is the electric field 6.f;b42eox 4d,r zd ,r2c/tzbbp7 yh(lh0 cm from the center of the sphere?