State the law of conserp*ic50vtor d0qt8tk a2vtx5b0bbi7u ( m ,) nkvation of electric charge.

  Is it possible for two negative charges to attract g 944kj t m3v3niu1jic3esa*t each other?

  Is it possible for a positive and a negativgm f/8bmky7.d o1td gip0 x3m/e charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duryi 2qx9sc9.0 fyff)ahing the process the glass rod acquires a positive charge and the sic9saiq fy) h2yf0x9f.lk

  A proton carries a

  The model of the atom ssv jl6 iua*/ojegt h4a2ln+-n-r 3m+chows a

  A neutral atom always ha39- ctrewp z)gs

  An atom has more electrons than protopf(s5lusi8 v8e t3,c,ckf/ axns. The atom is

  Materials in which the electrons are bound very tightly t1vh*3gii1rb :/1pcekl w 5hut o the nuclei are referre 5ikwpl1tbe3v1i *:rg1u/hhc d to as

  Materials in which the electrons are bound very loosely to the nuclei and c x3*:no6pw6a/ m u* puqnxkx/pan move about freely within the material are ref/m:un 6wpp/ 3qnp6*a*xx x uokerred to as

  A negatively charged rodvwwpmh38plu5--.3fabuwj( nlg 8x 5q is brought near one end of an uncharged metal bar. The end of the metal bar farthest ap5 xwq8-uwhl p58 3 -bmnw j.uv3(lgffrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They i 1ua +xll;uah ke z;-;0j6fid3zu(yqare placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundediq;z kl 0hi+ed;l3afy;aju 1uzx( -u6. Which statement is correct?

  How can a negatively charged rod charge an electroscope7 6mx(mazizcwh v;y 22 positively?

  An originally neutral electroscope is briefly touched with a crg 71 (8mdulepositively charged glalg81cud(7 em rss rod. The electroscope

  An originally neutral electroscope is groun:2te x(fcnls v,r5btt 6x1w wy8n+rj)ded briefly while a positively charged glass rod is held near it. After the glasvesntrx x(lt c: 8 ,jnwfr+twb 56)12ys rod is removed, the electroscope

  A positive object touches a neutral elen83: o+ mljclactroscope, and the leaves separate. Then a3 + al8o:lmncj negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charget .o2 mp;gfv9qpmhg,qn a(h5 5d 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, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. ,( q; 9.hnp2phag5 mogtv5m qf What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant*f. 0h9sx*vjw,kw okcrfv 9u+ $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lar ft o39.l+3jww0 qye:yk,2ijv f-rzc oger in mfj.k yw:i l-ojw 3oq3evyt0czfr,9+2 agnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eog; ij3,0 wntjach other on an insulated table. Which statement best describes the electrostatic for tj3ojn,gw;i0 ce between them?

  Two charged objects attracf1a 0 rec a;ihgq*m;.dt each other with a certain force. If the charges on both objects are doubled with no change in ; 10cdmahga*. ;fqrei separation, the force between them

  Two charges are separated by a distance d and exert mutual attrarbh4 1 .,wc8d*wwiu orctive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forc c u rh8.oiw4ww*bd,1res?

  Two charged objects attract each other with a force F. What happens to4pw2qz0 cnk /o 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? Thq4c zno2wp k/0e force is now equal to

  An electron and a proton ar9*uurza,w3pqeb 1)ere separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if ae*b)eu1q, 3przruaw 9 second electron is placed next to the first electron?

  An electron and a proton are separated by a diq0y la)0qe /gbbbi25xh l/rb)stance of 1.0 m. What happens to the magnitude lieyqqr0bl0/a ) 5xbgh/2b)bof the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated bypl. okn8vr:ew:tfjghst0i /c.1 g,j4 a distance of 1.0 m. What happens to the size of tvg 0g:.: 8/t1cjel4 , ritwjsh nkf.pohe force 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 squaq hr 938fcd*pg04icokre. 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 dr9 pk0oh q 84gic3fc*the square?

  A point charge of +Q is placed at the centroid of an equil*/h 0 gap,eosng/c m-vb hv./pateral 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 magni vam g ph-*p/c/n/ 0ov.sgb,ehtude 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 -e j.z0wo+8luzes *la 3:wju svector?

  At twice the distance from a point charge, the strength of the electyv qmeklkh +8 :k/u0gew8)1manx 91u tric field

  Is it possible to have a zero electric fj4;2bbvq twd ;e4)y(l0y wtziield value between a negative and positivbz4b;l j4d 0 iet y;qv)w(y2twe charge along the line joining the two charges?

  Is it possible to have b,g6 e0f+z z*s5g 5nf ,byfazc)x-qtia zero electric field value between two positive charges along the line joiniqzbazx5scfb,,z y5i)f gt*6+ fg n -e0ng the two charges?

  Electric field lines ne i)7vyfl0l na2ar psitive point charges

  The electric field shown ijk:r+) ( r:m bd4pcfa

  Can electric field lines intersect ib/zyk/ q/a5h/kwf*+;xd eburg1rg s/n free space?

  A solid block of metal in electrostatic equilibrium is placed in ae,lw;f 6,; 4sp47ut ayafwpbm uniform electric fie;bwt6m , ,p4f4 fplaw e7usya;ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollor3 x,qox n23g m4ph --hyuvde+w metal sphere of equal diameters are each given the so,pr 32 +exh3umgn xyv -4qdh-ame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wo7-rt03u3/ u05aln9r *fbxnylrc4tp g m i+reroden table in a region where a uniform electric field is directed straight upward. What can be said concey+ /4r9xl u3tri3r f0p*rtc r5g 0n ul-e7ambnrning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriuvq c7owze1p6r(- mb wg,uhz2i+4f )xz m near an electric charge

  A positive point charge is enclosed in a hollow metallic s ge/yb13fsk7j phere that is grounded. As compared to the case without the hollow sphere, the elec gfy/j3 b1e7sktric field at a point directly above the hollow sphere has

State three properties of conductors in static equili i:kl 6 j7uy;jnwh54isbrium.

State Gauss's law.

  The charge carried by one eg8- x: xk)w1zd 0wqrnblectron 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 +2.00ip. 5x)ltmqtu , 5:i20 rinnri mC. How many more protons than electrons does thiurim0 tr).p iniiq :2,txln55s piece of plastic have?

  What is the charge on 1 kg+uu( cgs,s*om )+ tflp of protons?

  An atomic nucleus has a charge of ru0 ht-1sup)l k3s t./du mfl0$+40e$. 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 2.0zwq 0/ai,okz4+)el k eqadi2o):z /cf and -4.0 mC, rz+oid2z)zie )w: 0coakk q,a/fe/q 4l espectively. 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 between them is 1.0 Nge2 hij : y djz:):xcju(,csb/. What is the magnitude of the,/2zc) :jgyub:ihdxc e(sj:j second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How farzuzwc ja3q+ ,iyc1jtw2oal40j b.)*f apart are they?

  The force between a vhag8j0n45 ,:i vv uvz$30 \; mC$ 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 th73 /sgziz)2e s0qli+ ln*i99e wcjpl gey are moved to a new separation of 8.0 cm, what is the electric force bete79lz) 9lg/n03i+sq csj2eil i wz*pg ween them?

  Three identical point charges of 2.0 mC are /56qp6gzvc ud 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 the charge at cqvdu66g5/pz the origin?

  Three point charges are placed on the x-a/ cgjeui g6n3.(cy n;jxis. 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 electros gn.;ge/n 3jj6c(i ycutatic force which acts on the charge at the origin?

  Three point charges are locach,ytj .k4ql.sw: fd7 ted at 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 the magnitude of t:4t,ys7d.qcw ljh .fkhe force on the 3.00-mC charge?

  A point charge of +Q is placed at the center a d2bzu6f *0a :8fhcokof 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. f acuzba*:6 d8h0f2o k 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.xq8 dfcjz im +(u:6u1g0 nC is at (0, 0). What isf mcju(qg8ux+z6 :i1d 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, p4n1 nx n6uyy,0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directi xny,ypnun 641on of the net force on the 5.0 nC charge?

  Three identical charges of 3.0lhr +( 9exyh0o mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the mhoe h9lx0(r+y agnitude 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 w25ljd1um upg0 jc eh1wlo,0)g,hxs,w hat point, on a line between the two charges, would it be possible to1, pw,xsdu g)cmh e, l00l2g5jhuwj1o place 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 k6pc 80wgc/ txx = 4.0 m. Where on the x-axis can /x t8ccp6w g0ka third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed*5.5 ji97 nspd lcosvv at x = 2a. Where can a third positive charge +q be placed so that the forc c5*jn l5i.7sovpsd9 ve on it is zero?

  A copper penny has a mass of 3.0 g. n0k-pem3x )4kpobwx(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 attraction of a figyjvswt:pj. q8 d3j4 0xed proton some distance above it. How far g.pjvjw sdt:0 83qy4jabove the electron is the proton?

  Two 0.20-g metal spheres ahfg-ku 9cn:/s re hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatu hfs n:/kgc-9ic 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. Whx+p3pa htuz r .t6bj;vzofs0g+5d: y1 at is the magnitude of the electric field at a dist1j+03hp b tr:5gotzd .apf6uv; xsyz +ance of 1.0 m from the nucleus?

  What are the magnitude and direction of uoje f p-b4:-ey0d4 x;-fphhfthe electric field at a distance of 1.50 m from a 50.0-nCox:fje-fh u 0 d4e-;b-f h4ppy charge?

  A 5.0-C charge is 10 m .6 snhb(4odp(fhv9zbr vc7jr )kcg5 0rh7 )cjfrom a small test charge. What is the magnitude of the electric field at the location of the test charg)r(sgzkh7j(r 0hn) o 4rjbfvc p.d7ch9b vc56e?

  A 5.0-C charge is 10 m from a small test charge. What is the directip+ggipv (+v e:k;jd 3m(pr r6ion of the electric fi;p 3 +mi6(rg givrd(pke +vpj:eld?

  A 5.0-C charge is 10 m from a small tes 39t:todj;d g ld5wey 6ie6u(dt charge. What is the magnitude of the fy(6u ddoj5ddtl ei9 6;twe :g3orce experienced 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 argu8pxf-ox ce8ecj)k1; f+6ja e separated by a distance of 4.0 m. What is the ele6cjkp;fxgjec u8 1a8 -f)eox +ctric 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 mCyn)t 53cd:pqz charge is placed at the 50 cm marntycdq):p3 5z 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 and a -4* ans7wm fpv- /+4exdj.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zpj/ n wxf7e*4a+sd-mv ero?

  Two point charges of +3.0 mC and -7.0 mC are placed at xdwrvpjt:6.66 st2fl xex; 6fs = 0 and x = 0.20 m. What is the magnitude of the txldv.6s ;j:2p6 s6t wf6fexrelectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0*3zx.s sh)ecz.50 m. The last corner is occupied by a -3.0 mC charge. Find thexzcszs) .he *3 electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Char05 +t l8d4*kptvtndix+7yr soges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4idt08spyv7rlk+5+* d o xtnt4.0 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 wjvr+h +za( 2u1jrpv2of 5.0 mC when it is placed in a uniform electric field. What is the u (ajv1+zr2hvjr2 wp+ magnitude of this electric field?

  A particle with a charge of:mrc q 6g+, z lp)rcefjnv;i+; 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 placx0)6xr huncjg1; vae6ed in an electric field of 6000 N/C pointing vrnx106 ; ja e)6chgxudownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrxlgb fbas2bh/ ;c5(y1ies a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended againhb/af51x y;b bgc sl2(st 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 mC9 4y21vayywe ai+i:iy. What is the magnitude of theaiy1w2 y+ iv y:y9e4ia electric 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 is 4getmz pet;,rgi .- u3the electric field 6.0 cm fro ;mp3er4.-z,tiu tgegm the center of the sphere?