State the law of conservation z 5z:+nudtr.k7bkoi+a 7 ;xyp of electric charge.

  Is it possible for two negative charges to attracql g*foz)k p)/s7k:wu t each other?

  Is it possible for a positive and a negative charge to attrls iguo56-m7j xa0 h0+ ce:( ndghx5lkact each other?

  A glass rod is rubbed with a piece of silk. Duo 3d6sl4hesi -ring the process the glass rod acquires a ei lso6hd-34spositive charge and the silk

  A proton carries a

  The model of the atom8f -hnxrh jsr83w0m+ za9 -esr shows a

  A neutral atom always hal n7 r90k0uyn ug2mnq,s

  An atom has more electrons than proton1fx7zc:vejo c a ++tm 5;zd-oas. The atom is

  Materials in which the electrons are boun9k z8 vtmwh;n0d very tightly to the nuclei are referred to ash ;v0tw zn9mk8

  Materials in which the electrons are bound very loosely to the nuclei and cav4ca i c9as.(eh 9 0t8jlqxn*jn move abj. 4*h9vc8jx canqei ls(t9a0out freely within the material are referred to as

  A negatively charged k bovyk//y)o: rod is brought near one end of an uncharged metal bar. The e) kvbooy/: y/knd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B aoo -zjl 4-,xvis neutral. They are placed near each other on an insulated table. Sphere B is briefly tou--o 4,xl oavzjched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrojry uja,s ssd1,5;0vuscope positively?

  An originally neutral electroscope is briefly touched with a posiw /j(s xb-pqsgun*gw0u 6, w6ptively charged glass rod. The elw-wp p ,u *(xggsjsq0/uwbn66ectroscope

  An originally neutral electroscope is grounded briefly while a positively-e5 0h9vbagtw8k 5jzo charged glass rod is held near it. After the -avgw08 5ohetbk9 j 5zglass rod is removed, the electroscope

  A positive object touches a neutral xv.w ec)fk* yfax )k/t/r,, yeelectroscope, and the leaves separate. Then a negative obv /wef acy)*,fx,ky/.)xrektject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placedv9me2f tbq; -i 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;qemifvb2- t9 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 consx n(/ :rzxb+c1( aeml1bpemu.tant $k$, which appears in Coulomb's law?

  Two charged objects are separatpq, xr ,u 0e88ty3 yzst;zh-imed by a distance d. The first charge is larger in magnitu x3i ;yuphse-m8, z0rtyzt8,qde than the second charge.

  Sphere A carries a net chaitl yk3ar,ihq1;* ,c brge and sphere B is neutral. They are placed near each other i,q la*hry;,bi3tc1k on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forceeeqbhbt :h03,. If the charges on both objects are doubl qeht3b: 0,hebed with no change in separation, the force between them

  Two charges are separa+xy pl/, bfuy,ted by a distance d and exert mutual attractive forces of F on each other. If the charges ap/ ylx,fuy,b+ re separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F d p,afi9)mx9d ;meueg) 6lik)2gt u,a. 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 o2l;uaixk, ag g d69 m,9imft)ud)p)e ene-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 msed1+79 megpq-e dw5p x)khj -. What happens to the magnitude of the force on the proton if a second electron is placed57-1ke sg+e xw)e9mpp-qh jdd next to the first electron?

  An electron and a proton are seg h+f /y. bmjk5bcg18fparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to8jf./gck5h1 +bymg fb the proton?

  An electron and a proton are separated by a r k.gl616be9jae2 hbe distance of 1.0 m. What happens to the size of the force6.91ajb6gkl2h ee bre on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squaro24 b*n -5dmr;whq y pssfj9e4e. When a second point charge of -Q is placed at one of the so sjnwh s94pq4m-;dby 2*re 5fquare'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 centroid of an /hmpce bwv)5. equilateral triangle. When a second charge of +Q is placed at one of the triang/chv be.wp 5)mle'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 followi*lo3ld1e *vei z age2:ng is not a vector?

  At twice the distance from a point charge, th p0nsl2a.a qhsd76 u1pe strength of the electric field

  Is it possible to have a zero elecxai y5agb2 :;etric field value between a negative and positive charge along the line joining the two charges?iye2agx;:5 ba

  Is it possible to have a zero electric field value between two positi x v1p) +uqhqjr*(q6lmve charges along the line joining the two j (umhvxr6 q q1*+pql)charges?

  Electric field lines near psitive point c nt9dtq vk3,d9harges

  The electric field shown ok51f nt0a *mk

  Can electric field lines intersect in free spacewxqmi;n6hi 6w3 ,zg r+an/9 ae?

  A solid block of metal in electroig /: *)vhw* nftm(to(2im8 m5lvxucxstatic equilibrium is placed in a uniform electric field. * (mmwvnt2 i()lfo*:vh/utxxm8i c g5 Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal di/oa,g9k,k+ 7x1weyp uup8 z z0/zkak gameters are each given the same charge, the electric field (E) midway between th/z10kzp87z /eu,yag,g9+ kpowu a xkke center and the surface is

  A cubic block of aluminum resnh- 5r-g i)o6w;adszim/a1 unts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfas6r5a;anh-zig-mud w/ 1 )ni oce?

  If a conductor is in electrostatic equilibrium near an electric chh8/uit y7:c/nvv7t htarge

  A positive point charge is enclosed in a hollow metallic sphere thnqs1p;m(h-wr fy f7xqksc.39 at is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere hk-(9sx;phyq m w1s3qf.cn7 r fas

State three properties of conductfa /fe7-3/g 2kfczh usors in static equilibrium.

State Gauss's law.

  The charge carried by one electyl:w2rm8n9d* h)va o uron 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 o6m px pyv3znn9(kuu;upnn 78grv,a)*f +2.00 mC. How many more protons than electrons does this piegk8yrn(7apn,u;v*9 pu 6p nmz)xnuv3ce of plastic have?

  What is the charge on 1 kg of769ry6+kr no3c qgb uk protons?

  An atomic nucleus has a c5 99 :h j: *cw;yptum .zdu3msqpcpw0kharge 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 9gq n4.ckx jet.y.1g mmC, respectively. What is the magnitu1nmc. .9t.4qk xj yeggde of the electric force between them?

  A 1.0-C charge is 15 m from a secondafqac(gp* zo r4s;e /qdk5y( + charge, and the force between them is 1.0 N. What is the magn+kgr5fpqeaz*d y(;(q 4 /csoaitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.s sp14)8lfp oy)dvc1 w How far apart are they?

  The force between a xaek ,cd,h w0fok2pdc1x r..4d*jna4 4oe ez:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a1ufpz ib;qrwx4( :( l7 szyrp1 1.0-N force. If they are moved to a new separati4zp pwi1 (1rus(q ;f xy:rzlb7on of 8.0 cm, what is the electric force between them?

  Three identical point charges of 9wv zcx a/h094bh6rab 7n6pdf 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 thr94/dp f96zaahhv 07xw6bcnb e 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 p *: vaukyx,; 1mpg68rkmd:ju hlaced 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 force which acts on the charge at the orauxk yumj, g*:8h;pk: d61rvm igin?

  Three point charges aretxi4w8r p24 grgq/k7w-pj 6ys located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 ipytgw4 -k 8 gp67 rxjr4/q2sw= 3.00 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*phjsnw;3h 6c placed at the center 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. What is the magnitude of the force that acts on the center charge if a third charge of -Q i *j whnpcsh3;6s placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q.6w b7ws;v;b1 mkfvjb2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, v7.;bm61fvb swk b ;wj0). What is the 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 is at (0, 0.10vygpb6xe a6gh 5) fuo3b-0:l a m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charg a-6ye g5o px:b) h0gbuaflv63e?

  Three identical charges 3czn/a3dfy5to .;28m hcayr f of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side.yrh;af8 d/ mf c.t53cnz2yo3a What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +xs 3jz.0 94x ,b kmaoa.czuz)y4Q, which are 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 such that the electrostatic force actin4bu,xoys m.39 a.0a)kxczj zzg on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wl06lz+lk h uq k6-gszuvvt8 :;1 cqr+xhere on the x-axis can a third charge be placed so the net force on ih1zkv6ktu;0z 6sqgq cu+ -v+l:lr l8xt is zero?

  Charge +2q is placed6tf+0 xk+ reyb at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plt6ye+r0 +bf kxaced so that the force on it is zero?

  A copper penny has a mass of j3m4d+0hp 8xjp:k tbc 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, d.8e/mrfamg0njz y- the force of gravity by the attraction of a fixed proton some distance abovm ndy0 a. /8fj,rzmeg-e it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinu j317a.)v vgobfkg7lzk7,yxg threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untgv jgy.f,klx7z1b7aovku)7 3il 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+ c6ln+qhqvk2b)evzyd 0x* 0g is the magnitude of the electric fi bd)*vgl2+kyzcq+0xh ve qn60 eld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field yj fu -69.0thfz8 k -chhh.ghv9/dbatat a distance of 1.50b vhyfh8.h-9uch t69k .h/jat fzg -0d m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud xmv.tg f37uc (q:w3pp6e cqo(- ijdb4e of the electric field at the location of u octdw. 7gv-q: 3jbfxpi( (c6qm43 epthe test charge?

  A 5.0-C charge is 10 m from a small test charge. We fav+/9:d o;qpjsvrpl.p :1pv0ecn + hat is the direction of the electric field nlops0dc91rfpv pp::ejv/ea.;qv++ ?

  A 5.0-C charge is 10 m from a 9g/z4s b-kzlz small test charge. What is the magnitude of the force exp9ls 4zbzzk-g /erienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a a*6.a-dt ws wbvalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric fie .a b*at-sw6dwld 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 k, p0,fn .evhrpn75xq-4.0 mC charge is, 0p enqfn.pkh 75rx,v 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 stick and a -4.0 h8rb w-i cfmdr.43r7f mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field.dhf8frrm-ci7 4bwr3 zero?

  Two point charges of +3.0 mC and -7.0 mC are pladpq,wm)tvtnth .+ (3 wced at x = 0 and x = 0.20 m. What is the magnitude of the electric fiel tnm+q3.t , tvp(dwwh)d at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The w .s5ug/ :sn,:swapu ylast corner is occupied by a -3.0 mC charge. Find the elec/,:. sg pa5u wwsn:ysutric field at the center of the square.

  Consider a square which is 1.0 m ol 1ahqx*xowse )g:9 w9ube7v8w. mg h7 -pjs+jn a 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 9gjhv 1:8se.77*suwbpj-g xm9hql +axe)owwmC 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 mCh(dr6) 5 ma,f*7z oy*pk eirhg79wu4tkxu9bq when it is placed in a uniform electric field. What is the mkqd77hhmuz a4w*tu) o,y5re(i r6 xbp9 kf*9g agnitude of this electric field?

  A particle with a charge of 4.(1v) xbs0vqjtlwi6h iz c )s8;0 mC 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 placed8g bit ;kftk9h +lz6b* in an electric field of 6000 N/C pointing downward. Whath6gktt89bz*; f+ lkib charge must 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 brq)tmy62,q7.bf1yjrbs qh 4eall is placed inside a uniform ele2mj eq.b f1yqrst47,bhr6)q yctric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wht9q v/ ixc0qz1wrn)(t kq- e:dat is the magnitude of the electt c0rine tkqwq/1 :zdq9)- (vxric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What 7 zi dn*gnv3*gis the electric fiel*z *7vgd nn3gid 6.0 cm from the center of the sphere?