State the law of conservation of electrix8 8u;zf 2rdgi7 jy2s3ry0 cnnc charge.

  Is it possible for two negative charges to attract each othewm/bt b/4i)fcp4d4c lr?

  Is it possible for a positive and a negative charge to at l*qogeat2 )l,tract each other?

  A glass rod is rubbed with a piece of silk. During the p9kw8m+ (aea1pq ig )s+t;mdtlrocess the glass rod acquires a positive charge and the +mg9+d mt8tp akq;(1esila)wsilk

  A proton carries a

  The model of the atom shows :sxc8-g pnmlea c zr *2y,a9lny q6;17 nxay:ea

  A neutral atom alway 3w/-qy+xhmrys has

  An atom has more electrons than protons. The atom illqq o4j e1txg;5 3w+is

  Materials in which the electrons are bound very tightly to the nuclei are refs d:01tv lwr2aerrv1rst w20lad:ed to as

  Materials in which the electrons are bound very 5qcwj5ydl4wn (p)5l rbl 1e30zf/t qtloosely to the nuclei and can move about frew5q / (yz5lw c3rpe1tdl tj5lnf4)b0qely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. xk;lu q(-y ckh2:bftvgm+z- ) The end of the metal bar zm bftky(q kh)2xl-v+; ucg :-farthest from the charged rod will be charged

  Sphere A carries a net(+t4) mkk ib dpyjo/2l positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groun bjo/t +(lpki4yd2m k)ded. Which statement is correct?

  How can a negatively char7bm bj ,v5;c d7gju,bu (dg.hbged rod charge an electroscope positively?

  An originally neutral ele wivcc4z5o 1 8l .egm3oxi6ryw8*yzosf3fh 81 ctroscope is briefly touched with a positively charged glass rod. The electroscopg*x8v1e8so 1.8yicmlcfy 34 owo5 3hzrifw6z e

  An originally neutral electroscope is grounded am/cu9eh/tyc+8d-;xdp a vp+uk- k8ubriefly while a positively charged glass rod is held near;9am ecudk hc-u +8p8dpva uxy//k-t+ it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.w : 4mz cltl0curgwy43-2qgglj526ai Then a negative object is brought near the electroscope, buycl3j g:2t - 4g62gq iwlcam04urzw5lt does not touch it. What happens to the leaves?

  A large negatively charged object is pbt 4 )z m664o9scwkhxslaced on an insulated table. A neutral metallic ball rolls straight toward the object,w tsz 46x) 4hkbs69mco 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. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb il:emw 3 v)hlml +0zm7 4td-aguqe.3oconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cci;;tb.e i-jkzg od76 harge is larger in magnitude than the se6- i;gkio.c;7e bt djzcond charge.

  Sphere A carries a net charge and sphere B is neutralbxi7:3nyqx 2h. They are placed near each other on 3 7:xibx2 qhnyan insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other9n wza afritb(8kr-qu a;f27e-dx5 d6 with a certain force. If the charges on both objects -irdrx bka7 958;e q2a6nu-wdft zf( aare doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exertb,eaq)5ua0ug39 0 6wjl8w ,af3tnfnjks (jwa mutual attractive forces of F on each othea8fw563w tul wj,0agen9)fb nj 0aj(3 a,ksqur. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witcdyazuecrq9 5 0(t (zu., f6zqh 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 one-fourth its original value? The force iq5 . yuqcerad (tz,c0z(z96u fs now equal to

  An electron and a pro/l )hzay 9vum7tp 5;tjton are separated by a distance of 1.0 m. What happens to the magnitude of the fmjau;h/75vlzt9 )p tyorce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated kr5*lq z 5gl9nj87ep qc7/v dqby a distance of 1.0 m. What happens to the magnitude of the fl8pej97q5 q*dv 5ncrl 7qkgz/orce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distan kwhd2ix6/sa+4r )u,nk y sy.jce of 1.0 m. What happens to the size of the force on thk2xih+ /) r4sd,.yu knwysaj6e proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed b5d n07/ hv(i,nbyvxsj:ke a.at the center 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 electrostatixhv 7b0v :a, .be5ni/ykdsn (jc force acting on the positive charge at the center of the square?

  A point charge of +Q is placed 3l(xs2.rhnnd at the centroid 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 forcen .(r3dxshl 2n that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following e filu.m-ifw+z4 zuxfs dfx )za/ 8qs;gw +*91is not a vector?

  At twice the distance frowc7*h7.m) mw qt utqk,m a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a rzxz4 6 )ba,xeou.( qozj4 e0anegative and positive charge along the line joio.exza0 er ,aou(xqz)z 64 bj4ning the two charges?

  Is it possible to have a zero ele ja )y.dv0q hp;yis-k)ctric field value between two positive charges along the line joining the two cvsi;j))k0- yh adyq .pharges?

  Electric field lines near psitive(hr q.9u usani(-tceds-89s0cja d )z point charges

  The electric field sholamd h *9pk,7dwn

  Can electric field lines ;hi f)xx/ -aj qd(s2 b.(.tbcix)kap7e hh y:gintersect in free space?

  A solid block of metal in electrostatic equilibrium is (hvq6/wl glx0dr+pw 9oe4uj+placed in a uniform electric field. Give a statement co(x0r wuqg l4jl/ehv+ ow d+6p9ncerning the electric field in the block's interior.

  If a solid metal sphere and mj yr3bp.q ck5+9yyk, a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the su3rq+by.kk,pc9y 5jy m rface is

  A cubic block of aluminum rests on a wooden table in n4ys 7qnj (,wta region where a uniform electric field is directed straight upward. What can be said concq nyt (j47,wnserning the charge on the block's top surface?

  If a conductor is in electrostatic e ls kz;k7.7rn.frb gh(quilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that 3cd lx 8dr3lxo:,3 odjis grounded. As compared to the case w:xoc3, d o38d rljdlx3ithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sxy*ngh;x-u5r2l8o is0dkuc 9 tatic equilibrium.

State Gauss's law.

  The charge carried by one electron is 1.ei- jk7 t5nk6xdttb$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net zujt o y9/+n2bw;0jdy charge of +2.00 mC. How many more protons than electrons does this piece of plasticu;02y/d tw+jo9y b zjn have?

  What is the charge on 1 kg of pre;9aqvp,838 jta apn kotons?

  An atomic nucleus has a charge k e2xq:*uwgb2 zq3;mb of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated bymn )gi6h b(s,2 mz+rhc 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitud,)shc(2ih g6 mnr m+bze of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1yw(zvhj f3z) co;iao o6,+t;e .0 N. What is fvi j a,zo(6 ;y+hz)3;cweto othe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Howp7 ,je: b-1i)hohgqwu far apart are they?

  The force between a +cpr d a-t7)ypmuqzu6vbhx/a g7) )2 r$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience y*ygv6wa q +op- m47cha 1.0-N force. If they are moved to a new separation of 86 h aoyqv-* pwgc4m7+y.0 cm, what is the electric force between them?

  Three identical point charge0xi uj hjg4-jjn lo//8s 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 ol j-0uhg/j /xnjj8o4 in the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2cbxgw d)+ *v/z.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 electrosvx) *dzwg+c/btatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x =f)/m aedhur5h( z2mg9 c ln:y- 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 force on the 3.00-mC ch:/d- n( lceh m)ag2y 9uhzfrm5arge?

  A point charge of +Q is placed at the center of a square, and a second point c 4 (n4(.oqlf4rq0 4cy6 dxemactpske, harge of -Q is placed at the upper-left corner. It is oq(4ml0kf(cs4,qdptao cr4ex.n4 e6 ybserved 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); Q3 = 5.0y +onus9m olce5al+ g4 i(cs49 nC is at (0, 0). Whuloaesn ( gc44 +5oyi9mc9sl+at 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.mt+n,bi1p88hqwu- grp.qc c30 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directqhtn8.+pcmqu1 8-3cp ib g w,rion of the net force on the 5.0 nC charge?

  Three identical charges o,9q hcj x-3(e :fs*ftcjgz(myoq v18tf 3.0 mC are placed at the vertices of an equilateral triang8 ztcm:cqo 9 1s*ygfjjqvxe(f,(t- 3hle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by y7gu: n kx2t+ )gt2xib-xrk n33.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostat xui2 2tybnk- +3x)nkg7gtx:ric force acting 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. Wherec5xj: 3uui v8j u7vt;cm)c7ff on the xc3u;f vx m5ci7: )cfu 8t7uvjj-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2aymf9/ odz*zbm( t +m+k. Where can a third positive charge +q be placed so that the force *o/+(dm k z +9ymzmtfbon it is zero?

  A copper penny has a m0t/jqa*gc4qqeml, zrpi8 1a8 o. j. muass of 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(lgsa-nl;u :7l a s)0 s.grf.ebcenz 8 by the attraction of a fixed proton some . ll0:8cnlu( ;seefbzs.)-a a7grgs n distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are h-. xhft04i+cshapcl 0m uqif/;g24rwung from a common point by nonconducting threads which are 30 l4smwurapcqh/2 +ith x0g -c4f; if.0cm long. Both are given identical 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 chk abr .qq+:4gwarge of +40e. What is the magnitude of the electric field at a distance of +rqkw:ag.4qb 1.0 m from the nucleus?

  What are the magnitude and dire sz4iru -qd ,8 -ymx lkv/s;s4/uzt8mbction of the electric field at a distance of 1.50 m fro ss-s8r/;zz4,uq4u m- /lxvkbtyd m8 im a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude qa. 1ah)0xhm5oyjx3mup -3at of the electric field at the location of the tesm5qaa1x-y)jth3 0op hu.3 amxt charge?

  A 5.0-C charge is 10 m from a small test chnnh0m4cz2(:x8fok5z :6zsiqok )ktbarge. What is the direction of the electric fixfo):0ikt nsh5k8b(oc4n:2k 6qz zzmeld?

  A 5.0-C charge is 10 di4ox/-r /u-3wicga om from a small test charge. What is the magnitude of the force exp-rax3wud co i//goi4-erienced 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 distanc+2 dy+ f4 a z.rpputyo/sy--epe of 4.0 m. What is the electric field at a pd.t2f- yoy y4 +p/-a+esur pzpoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mar/f0/ f w ex:gbq;yf)sxk of a meter stick and a -4.0 mC charge is placed at the 50 cm mar :q/f xbffs0/xwy)ge;k. 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 amoi/ng3e cp;u5p, r ,0ealaq.t r6wp*nd a -4.0 mC charge is placed at the 50 cm mark. At what point 5;erpt3 ewm6.p/cln a0io, upr,agq* on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at xzz ;qrg0bw3 flrb9 e9j+3d5nu = 0 and x = 0.20 m. What is the magnitude of en br395qbfdj zl9rzgw3u; 0+ the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.g jbyugj4 ./f750 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieldg 7/ugyb.jfj4 at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed att hgriyp-8 n74p zlp93 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); r3-7zlt9ip g8nh4y pp-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 a uniform elec fi6scm 9l4e1btric field. What is the magnitude of t4b1mef 6i 9lschis electric field?

  A particle with a charge of 4.0 mCz 1 g9jdcnvd(dj4g9m - 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 maoa zo9s3 691i)sqkj:qr k p,um/ dc6dqss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tss km6 ,z96ck/d39oj)o auq:1qdiprqo be suspended?

  A foam ball of mass ysupdfv dcaq))b.l564 5e*q d/eusy00.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Wdv5s5y/yce) ub qd4 f al6qd.)u0p*es hat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carri tg,6qw.xwfd/es a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm frtd ,f.wqw/x 6gom the sphere's surface?

  A metal sphere of radius 2.00*ugc5+r j4 fs *d9zrc.toqxl cm carries a charge of 3.0 mC. What is the electric f jr*+cf0slq. c* xu9og5t4z drield 6.0 cm from the center of the sphere?