State the law of conservation of electric fwketl -3bo+zog p)2lrr;8i . charge.

  Is it possible for two u bgv;l;z 8 1nxx:mgj3negative charges to attract each other?

  Is it possible for a positive and a negative chacjo :.4*tlxhm rge to attract each other?

  A glass rod is rubbed wigu aji1u r67y87qzx(zye* di 3th a piece of silk. During the process the glass rod acquires a positive cha yq*7iez7gryj168 xu(idz 3 uarge and the silk

  A proton carries a

  The model of the atom showsda m y9.b 585,mhl1(k9w8isj xbxpufq a

  A neutral atom alwaybhs u4 5jbc0/as has

  An atom has more electrons than protons. The atom iycrm /q k4qw e: q4fv4+-nxo*vs

  Materials in which the electrons are bound very tightly to the nuct du(1j0:cc vclei are referred t c vcdjc:t(1u0o as

  Materials in which the electrons are bou wfxe76nf lib .::d2pznd very loosely to the nuclei and can move about freely witlfne: xf.7db:6 wpi2z hin the material are referred to as

  A negatively charged rod is brought nearf 49wo6xou 3dr one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be cfuxd w936 4oroharged

  Sphere A carries a net positive charge, and sphere B ioyab0g,p/74cbg m) g.l cnoo16/ymqcs neutral. They are placed near each other on an insulated table. Sphegomq 4n 76 gop.ly1o,bbc ) cy/0gmca/re B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope )v9cx rw0 u,htdvl..m positively?

  An originally neutral electroscope 5 oz7 ardc38rzis briefly touched with a positively charged glass rod. The el 37ar 5ordzzc8ectroscope

  An originally neutral electroscope iswglsd. of/zjl03( pj- grounded briefly while a positively charged glass rod is held near it. After the glass rod issl0pf-.gj zojl (/ wd3 removed, the electroscope

  A positive object touches a neutral electroscope, and the leavefln09z btyx ,-s separate. Then a negative object is brought near the electroscope, but does not touch il, zxf0n -yb9tt. What happens to the leaves?

  A large negatively charg mumk)rb,(dog.atbh) l(j)1 g wmpv4 5ed object is placed 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, ang d),bumtr45p omwbkhg)mja 1). lv((d 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 dpdk6c p.zfh(.cm r/*Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance dqztm9hq )z/qah 1g; ,7;h5ho6xlzjmc. The first charge is larger in magnitude thaha/1mgcz;qqxt ;lzh 5z 6,qohjh7) m9 n the second charge.

  Sphere A carries a net charge and s;rh( xdq5rg0 9k25 xr nljso*aphere B is neutral. They are placed near each other on an insulated table. Which statemen9(kjr; hdsxoxl55n2 *r r q0gat best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forc d/m j,yarr9t:e. If the charges on both objects are doubled with no chanady rr: t9j/m,ge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractm+to-.i/ jm:pyq , wysive forces of F on each other. If the chargeq/:w mm, s.p iyo+jy-ts are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects a rnes e3+t8k0nttract each other with a force F. What happens to the force between them if one charge is doubled, the other charge ist 0ns8ke+rn3e 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( xejzgkh: fb0j i:9*x m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fijzxfxgke: h: 0b*( 9ijrst electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens2ywdo* c apk*1 to the magnitude of the force on the first electron if a second electron is placed next to the pr ydao1wpc 2*k*oton?

  An electron and a proton a5kyybp9xbzeeyd;v 8:d: tu()re separated by a distance of 1.0 m. What happens to the s9:vekd: beb(yy udy) x tz;85pize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is p, fi5dox4uug-laced 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 Nuf5g -iudx,4o 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 tpmtb1f(z6fj + he 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 zfpf1(tmb +6j 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 vechuio4( sfoy* i;0dr;s tor?

  At twice the distance from a point charge, the strength of the electri y00eo80:/2pbrnsyj d; oml4w9xzh jic field

  Is it possible to have a zero electric field value between a negative and ppaq*fehc8pc) -b 27m gositive charge along the line joining tap78mec g)p-*q cf2hbhe two charges?

  Is it possible to have a zero electric field y;l,q( 0m*d g7jyfyfp value between two positive charges along the line joining the tw,fyfl*ym py;0 qd(gj7 o charges?

  Electric field lines wcp.mivf.7du:- +ia tnear psitive point charges

  The electric field s6lutwh-cm t 6,hown

  Can electric field lines bk6s22j qn; ivintersect in free space?

  A solid block of metal ic eycz 1c 4+lxf 9/gi1xw5l2jpn electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the ej /wc+5g42xefl1x lc iy9 z1pclectric field in the block's interior.

  If a solid metal sphere and a(rm; hxe3*pqop;kchn,g /nk ,2nj-g u hollow metal sphere of equal diameters are each given the same chargk-n 3 hq;( k p;ou, gng*jpcx,e2rn/hme, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum restsy q0zj:r er6+v on a wooden table in a region where a uniform electric fiezq+6 rrjv0:ey ld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elect sws,l(cbsz,vw0g5* lrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphe aj2mkolwk 1 ,i6v(/6ub rnzy9re that is grounded. Ar2w /zabi(ok 69umjlk 1nv,y6s compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductor+zo p c8bf-,vy, +fsehs in static equilibrium.

State Gauss's law.

  The charge carried by one electron i9atdlz la2m:zrsm y e) tdz)25 -l4tjnoux42 5s $e = -1.6 \times 10^{-19} \; C$. 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. Hop)*:lxb *xolq9;f r (prw+vxew many more protons than electrons does )*:x(9qfre ;ov pblwrxpxl* +this piece of plastic have?

  What is the charge on 1 kg ofy 9y1xm9agu +a protons?

  An atomic nucleus has a chazsyjg vxx/x.::b,n7jrge 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 27xh / puy7trz 1b2i8c o2kr2ko.0 and -4.0 mC, respebuh yr o7z io1kxt822krc2/7p ctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweennxv70c x)g;k q them is 1.0 N. What is 0;vgxk)xq7 ncthe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?d 6+gyw*b0 nix 7bkdi;

  The force between a (ze1o kmd -6wg$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If they h v-tqma4z1sext )(aar8q 4zp93atk8are moved to a new separation of 8hak8rq9aa s 8t -4exz1(qt z 4)3avmtp.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are place vtfn8ugd(;e 4d on the x-axis. The first charge is at the origin, the second to th dug;n4(e8v fte 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 the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 zfztle3w5m8* em )/59 t vwxndmC is placed at tnfz/le zev mdm3)9 wt58t5x *whe 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 origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC n*0:-ya*wfbirgz pg/ at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC a*0 bn/ryaw-g :zi* gpft x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a z(n k*9ykku* kxjj ;8zsquare, and a second point charge of -Q is placed at the upper-left corner. It is ob ;9 z(kkzjxy n*kjuk*8served 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 itjx) wdk/ qv;3bcm:x 8s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the n)/:x cvkq wdj 8m;b3txet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);t(p y(snriulj(:k o b* q4id43 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 force on thbu po3drijylins(*(k(t44 :q e 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vet nwj.j(5tudl c t,t0k19cb9 qrtices of an equilateral triangle which measures 30 cm on a side. Whatct9tl b j0q,w9.tctj15(nu kd is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which ardk4l v/ 5 l ss0uzu*0y;;qzabsr9hvw+e 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 acting on it would be ze0dqv+; z ; usyzbu /a*w4v9sk0 lslhr5ro?

  A +3.0-C charge is at the origin and a +9.0-C charge isroym 4l0(ax klhj35v ) at x = 4.0 m. Where on the x-a5 jral y(m4l0kov 3hx)xis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chargl*f gvj -pq26ts8zm7ie -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zerz mf gv *q26tjpsl87-io?

  A copper penny has a m 5*f *enhv fvr.4h/cd.v qnhu-ass 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 graad 4 aock8y3.r3)adi:l3j j nmvity by the attraction of a fixed proton some distance above it. How far above the electron is the :a 3y.ri3jj3co) lk md84 aandproton?

  Two 0.20-g metal spheres are hung from a common point byybsstas+s84- nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic rest 4yab-ss 8+spulsion 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 chari l9mgz*sj:il,i19v oge of +40e. What is the magnitude of the electric field at a distance of 1.0 mo:9gimzi ivls,1j* 9l from the nucleus?

  What are the magnitude and direction of the electric field at a d*yn uj*wzn*xhl;+-s w6yqv(q istance of 1.50 m from a 50.0-nC char*s6 + h qy*jnwv-ulxzyw(;q*nge?

  A 5.0-C charge is 10 m from a small test charge. .qeo y y28dcy7b5;net What is the magnitude of the electric field at the 2.;qe7bo8eydct 5y nylocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of aacrv (v7yl8gu.eyq1y (svr 2 )b, g2cthe electri )1u2 .gber,aarcvqlc vs(2y 7 (gvy8yc field?

  A 5.0-C charge is 10 m from a small test charge. ky- a4 wnx7hlt-f(5ud What is the magnitude of the force experienced by a 1.0 nC charge plactfa7x5y lnhd(u4- w k-ed at the location of the test charge?

  Two point charges each have a value of 3.0 C andvmoz vr;ki 0oab4 )5c1 u06agw are separated by a distance of 4.0 m. What is the electric field at a point mi m5row)aovig 6v 4bz 0c0ak1u;dway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark pbkqokti-), v 2nza y,a r1tas1kj1;vang3*2of a meter stick and a -4.0 mC charge is placed a* ) iaagoq;3v11p2a1ra2jb t,ykvnn, -sktk z t 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 mx al9qxibfv;fc+.xe2 x(b/p -eter stick and a -4.0 mC charge is placed at the 50 cm mark. At whbfcf.xx ieqv x-xlp/(9;b2+a at point 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 x = 0 and x = 0.20 m. ukb 7f-7zpw ju ,tweu,+xh(b2 What is the magnitude of the ep- jwxkth+7uu,( ,e2wzf ubb7lectric field at the point midway between them?

  Three 3.0 mC charges are at the three cornerm(7r/y 7h6vw.al;w- v9 jmuycy wxoj(t45ng hs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC cha5y/ y (clwwmnvr(jt7 9ovg;-wa.h7jhy4x6murge. Find the electric field at the center of the square.

  Consider a square which is 1.*j)g/a;w qf7 5 nngsmlobcq9 9;cw:eg0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +w:c/wgosn7af;lqe5nj; cgm)gbq 99* 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 orpgvyo75 ewms6(030 f: pcews f 5.0 mC when it is placed in a uniform electric field. What is the mao5f07sm( e wr0 v:gpsepc3wy 6gnitude of this electric field?

  A particle with a charge offoquvy 9zd .x*5rk2 s+ 4.0 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 placed in an electric field of 60*5gac-wmyd)fqh 8m m000 N/C pointing downward. What charge must bgq5)c*-d08ymm m wfa he 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 plr+zn1 rq23v9szxk v6faced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude rkz2 v1qrf+ 9nv63zsx and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge 9d+s2m6,c hh fz ll8-b*xmbwua dn)8u of +2.0 mC. What is the magnitude of the electric field 5.0 cm from wa +f6l2d*s udzlb,m -xhhm8n)c8ub 9the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charje2speb8ib0).y oe 4z ge of 3.0 mC. What is the electric field 6.0 cmibe8) z y0bpe2sjo e4. from the center of the sphere?