State the law of conservation of elk5nq. q6xan b8ectric charge.

  Is it possible for two negative charges to attractf t:z :q;xrpq1 each other?

  Is it possible for a positive and a negative chatrlp kd7 g833 kas,l-5 ;ytddirge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rny u2yj4 2g2vrod acquires a positive charge a2 u4v2nryyj g2nd the silk

  A proton carries a

  The model of the atom shows a 7-6thriv(cbv.v4jbv/ aa) sk

  A neutral atom alwaysb0bua3 *s;oumvb6: ,5 6 jypjgc+wtq b1 lho/q has

  An atom has more elect)zc(mp5b6 n ykrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are recs0nq4 d ,a(3qrg*jor ferredr *o0jqq sg,d3cn (a4r to as

  Materials in which the elecfk-i5s/lrm x xq0 l3(htrons are bound very loosely to the nuclei and can move a(/fl-ils r kx0 x35mhqbout freely within the material are referred to as

  A negatively charged rod is brought near one r0r( zid dnie4(xf3uo: l0f7x end of an uncharged metal bar. The end of the metal bar farthest from the chauix(e4ro 0izr: dd0ff3x( l 7nrged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. T/,ror2 pfyo(rgvpv3m* r g5m e k7eh+-hey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement ioky - /v+o 3rer*grep5r,2vg fm p(h7ms correct?

  How can a negatively charged rod charge an electroscopfda v9;pivg*g0 mh 4:we positively?

  An originally neutral electroscope is briefly touched with a positively chare7u:f 93 99p d 2aom1gmysvnpiged glass rod. :1 puapdg999 y2ofe3 mn7m visThe electroscope

  An originally neutral q v/1pft3yd.a electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the.dvqp 3a yft1/ electroscope

  A positive object touches a neutral electroscope, and ux -zn3avg.0hq2j* vkazay 5- the leaves separate. Then a negative object is brought nea haxjvn0zq.5zv- u2g ay- 3*kar the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placedg 8 itx2(dgychkn-4m/ 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 touynkg(4 d/h xc2t m8gi-ch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coul8f d0i;+;k crrkzulk23 onc,b wyh.n(omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated-lrms*:; br av136loatjfkq * by a distance d. The first charge is larger in magnitude mqaf*:ksoja1l- r 6tb;r *3vlthan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They agp+; alqho3ay vw57h2 re placed near each other on an o3hg7 ah2p q5y+l;vaw insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain f-jm s acid,dw 7rx6:)x8qpq a(orce. If the charges on both objectsaq7,:(mi ddpqj6wx-acs x ) r8 are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual *3v qfm ngcwwz,4(n:cattractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcw mc:q (gnzn,3cvw4*fes?

  Two charged objects attract eaax (y3.z t9h6dsap94nzu -h68mf9 l sqcu6zvm ch other with a 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 m 6( l9zt m9cn.3-6z vspqxhs a46udah8fzuy9one-fourth its original value? The force is now equal to

  An electron and a pro)( 22tji ybhoms.k 0oxton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first exb( isk yh).2j20tom olectron?

  An electron and a proton are separated by a dj t6 lzj13i2k4 )utfqpistance of 1.0 m. What happens to the magnitude of theik316z) ttqu 4jlfpj2 force on the first electron if a second electron is placed next to the proton?

  An electron and a proton arepdxo1oj/bnq;exwej2 j7 h.+c7( w1x f separated by a distance of 1.0 m. What happens to the size of the force on the protocoxe ;wbhq7xj1 .7 12 ne+xjw(fdjo/p n if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. xt 41(c d 39uk4lxn.)ypxawqh 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 electrostatic force acting on the positive charge at the center of the square?lqpwnh( 1.)da4 9x x yk4ct3ux

  A point charge of +Q is placed at the centroid of an equilat q tv(n/a. p+l3eqdv.beral triangle. When a second charge of +Q is placed at ov(.eql3a +v.tnp/qbd ne 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 not a vexuzmm;68nil/ lfb:8 s ctor?

  At twice the distance from a poin8q*vucyajl1ni 8 lo +w5d tnixw)6r.3t charge, the strength of the electric field

  Is it possible to have47 /uwj5adqa d8 2ocnh a zero electric field value between a negative and positive charge along the line joining the t5a 2dah4 q/n od7u8wcjwo charges?

  Is it possible to have a zero electric field value between two posit 54mffkd**4 pwzts5 dxive charges along the line joining the twdsx5w5m*4 k zf*d f4pto charges?

  Electric field lines nea x1r ru:.9 yxve-ei5nu57xjbvr psitive point charges

  The electric field shownwx+y3w; p1svuy 1tb :x

  Can electric field lines intersect in free space1qh6 23iyn jjtq 34iaj?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e*kx/p7unrqq *i e r95lc clh66lectric field. Give a statement concerning the electric field in the block's interior. rh lq5 *kl*/iq9cc6p 6unre7x

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gg(ss x y:,c.sx9 urh+eiven the same charge, the electric field (E) midway between the cents.y s sr+ugx9(:c,e xher and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a ylz1b jh ;/;)d7rnl aiuniform electricyljd1 r7i )hzbn;;/al field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near at 5,r6pa 4dtr8df i1w8a 9wkian electric charge

  A positive point charge is enclosed ioie0pobp tlj u21q ,8(n a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spherjtl oi,01bu(2p 8q epoe has

State three properties of condw, o/atn 7:s v5qxdg+9+en skfuctors in static equilibrium.

State Gauss's law.

  The charge carried by:/ vkx5u go-: d,vyffc one 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 //cp3) 5;sxmk j7nq fv j1 simzdf*qv/q2s*ywcharge of +2.00 mC. How many more protons than electrons does this piece of plasticsjw/j2vv7f dx* f 3zc/ )nqm iqpm1*;k /sqy5s have?

  What is the charge on 1 ; i kt+fdsk1j)gtrfm46be *b1kg of protons?

  An atomic nucleus has a charf5b. hwy+7g7euahpx 6 ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separat6cemb j* .3vioed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnm*.cb3 o6ej viitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwo am(6lwzlz(y 2cr8grg:h,+w gog l3bx71pf0een them is 1.0 N. What is the magnitude of the second charge?(w hr631frmwgp8 lagg g7o0zo+2x l: ,lybz(c

  Two 1.0-C charges havqxm g 9-aqt3d-e a force between them of 1.0 N. How far apart are they?

  The force between a 5x(u3bzl 5vr h$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienc voz,u;s:pe/ nqgl)e-e a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric v)spl,zen ;qeu:o/ -gforce between them?

  Three identical point charges of 2.0 mC are placed on the yb emmc d.v:18(: qpqex-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 t: b vp:edq1mey(c8.mqhe electrostatic force which acts on the charge at the origin?

  Three point charges are p 4n unhsa+:q0v9gxdt)laced on 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 at the 100 cm mark. What are the magniudgx 4tav:q s+nh)09ntude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at rjtn./ ffm5,/yj9csc. d,e 6cy prec:the following positions: 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 the5cpj, ,m/ fjcy re6:y.c9e/ .s tcndfr magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center :1*px9jcw,urm cf 5pd of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center., :cf9wpxr51 *cpdju m 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 (0hec, lwg-)-g k, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC)hgw- ge,lk-c charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = v g(s: wy0dnjvu0d j1n.*g+ ousc.9in-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). yd :io9d1gs*s(+vj .u. 0jn0 ncvungw 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 a (8 /yv/il0mpye br:lxn equilateral triangle which measures 30 cm on a side. What is the magnitprey/l8:l(m0/ byi xvude of the electrostatic force which acts on any one of the charges?

  Consider point chargfo:o5cpa) v5ujzy,n;+1rsq p es of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to ppno1qsou+5;v ) r5a:p,j cfyzlace 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 /f jmii.9:mn2wzp de7x = 4.0 m. Where on the x-axis can a third chargei nwzpmedi9 .f2m/7 j: be placed so the net force on it is zero?

  Charge +2q is placed atn-4(kz3pos6eu 8 hpol the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the (o6u3 pnkz se48-hploforce on it is zero?

  A copper penny has a mass of+wdh* owi ;.mt 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 gravity by the attrac /c x9;ec;ejd l*mpue5tx0u g:tion of a fixed proton some distance above it. How far above the electron is the ;;:ugcep*c xdtx0lj/uee 95mproton?

  Two 0.20-g metal spheres are hunga /u.av+dt;g ldyb89b from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostati tg +ab9.;ay /v8dulbdc 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 magnitu mf4v*r 2h y5tm)ehz,ade of the electric field at a distance ofhey425r*v,z)a f thmm 1.0 m from the nucleus?

  What are the magnitude and jrd v q5def4 88oiku95direction of the electric field at a distance of 1.50 m from a8evqk i uf954 d5orj8d 50.0-nC charge?

  A 5.0-C charge is 10 m from n,9md01ccef4c o m3ixa small test charge. What is the magnitude of the electric 9e m01xd,3mno4cic cffield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What *7j vxaoj. w gx2h:m30tb1ckjis the direction of the electric max2:vc 7j3ojgk0*1.x j hbw tfield?

  A 5.0-C charge is 10 m from a small test charge. What is the )q2k7 ivzgg( k346f lcb js1i et*rwj/magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge r(2 /w )37eb1kjgijvt *iqz4sgkcl 6f?

  Two point charges each have a value of 3.0 C slzde +w0x rm4)6gc 6uand are separated by a distance of 4.0 m. What is the 6 sx+ucr)wz me460lgd electric field 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 mC czz3qh1 7dh7q )j8scsvv.s;enl3nva+y. k zm)harge is placed at the 50 cm mark. What is the electric field at the 30 cm h)71mye.z. z+jkh;vd )n7sv3z s qsqal3 c8vnmark?

  A 5.0-mC charge is placed at the 0 cm 2ht/ un),w:2cwc81wk dkl2;ax oh keymark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining thewy/kdxokcc,h) wu 22a;hle:k28nwt 1 two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0. m)g2 3y(osznv20 m. What is the magnitude of the electoz)s23 gymvn (ric field at the point midway between them?

  Three 3.0 mC charges are at eus ;st09m /hu5 0dfqdthe three corners of a square of side 0.50 m. The last 0f ud59 0mq thsdsu;e/corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thc 9 35wh94idxuxqr fw9e 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 magnitude9xwhwr5xu9 3dfi94q c of the electric field at the square's center?

  A force of 10 N actso0 )lak7os7,tnvd* zq on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudzksq07noao7 )t* dv,le of this electric field?

  A particle with a charge of 4.0 mC ha/r jodiukvm,f2fot8j s6h 37,s 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 m/ un3fea iyxr o-7)s*easj1l0ass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placeeay0e 7j)a f3*x un1il- sr/sod on the ball for it to be suspended?

  A foam ball of mass 0.150 g cam::s 05oekztwsdh 28d rf.itjcsn: ,4 pkj1w1rries a charge of -2.00 nC. The ball is placed inpch m: 10.jf srk58ed:t21sk:it ,n4wsojw dz side a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of ra( cwr 4)il klzc,r mh fy4mm790t6)guhdius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfr,6g ly4z(m m h)l trc7mik)wc4h0u9face?

  A metal sphere of radius 2.0 cm carries az r(i39kklyg,v :z9k9/k rbsx charge of 3.0 mC. What is the electric field 6.0 cm from the center b3 r99:ki,xzk9 r(g/yz lsv kkof the sphere?