State the law of conservation of electrq y9ffsk7(qmrp6f r1 9/ow*ztic charge.

  Is it possible for two negative chahsvk ljjcqbxt,1( .0*vv92zf rges to attract each other?

  Is it possible for a positive and a negative q;k 3w0v2 kp3ohq h5cacharge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a w1 (rs8:;wz.g vkdpmmcquires a positive zsm.8r (wp1gvdw;:m kcharge and the silk

  A proton carries a

  The model of the atom sho3pfa4 1k(jisc ws a

  A neutral atom always h /59k8))i yuavem,bp8sc di djas

  An atom has more electrons thx9q-;hwjfv8cw6x/+s ts d( 0uqm sw.can protons. The atom is

  Materials in which the electro4z qnb0 mw)i,x4) muxtns are bound very tightly to the nuclei are referrezm ui)tb 40nw )m4xx,qd to as

  Materials in which the electrons are bo,otlb l jseg6a ()u3d3uo)uze/in h,,und very loosely to the nuclei and can move about freely3hoju3, la/ultui)e( sd,,6ob ) negz within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. ) 3bds8lse frx(bf 3r3The end of the metal bar farthest from the charged rod will be c x8se)3f3rb (3d brfslharged

  Sphere A carries a net poxwh4uc l1;o)0t .abd ;3gidg psitive charge, and sphere B is neutral. They are placed near each other on an insoid;bx0cw 1u3tg hagdpl; .4)ulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posi),nttt5qnp3-lj(wb0 cmb tow41p1hktively?

  An originally neutral electroscope is briefly touchl/ymi;xrs 9(u vk *lu)ed with a positively charged glum* sur9x k lvy)(l;/iass rod. The electroscope

  An originally neutral electroscope is grounded brijcctaeaur :9ed( w2fwqi14 +5t2t ym/efly while a positively charged glass rod is held neeuram9(ati/wd yec 5 2wcfq2 4jtt 1:+ar it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, rqj k-kxqn7r26pf-,4hzx i,tand the leaves separate. Then a negative object is brought near the electroscope, 6,qpn2kjfr-7i, hkxqr xt4z-but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral hs pt 2zfats+d55h l23(bz+g smetallic 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. What is the final charge on ea z (hltfs+zp+d5 g5sst2 b2ah3ch ball?

  Charge is

  What are the units of bs d.3fi)- *rcsc8n gtthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg9-o ns pvj)bbgu1/x:l e is larger i1jpub-sn)/: l9xg o bvn magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eaceplvtp48wzzf ri : mku76m 01;h other on an insulated table. Which statement best describes the electrostatic force b64ktv 7lzf:81;wp0uzrm mpe ietween them?

  Two charged objects attract each othe yt0.7ipzqes3p4 :or pr with a certain force. If the charges on both objects are doubl. :oeispt34pyq p0z 7red with no change in separation, the force between them

  Two charges are separated by a distance d and exertyk0k:a+np wie k +x 9raz;s)i0 mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutualypawki 0 azn+r :;90x)i+skk e forces?

  Two charged objects attract each other with a force F. Wh3:b 2 yfziz,wsat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their center,fs3yb:2zz w is is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a .ymaq 8j1mi nk9xh botjx7;02 distance of 1.0 m. What happens to the magnijxob208;7yk a. 1ixmm9njhtq tude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0/2pe aqb im3v: m. What happens to the magnitude of the for q iba2vep3m/:ce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whatn3f+5qr h/s 8k+kjuwd happens to the size of the force on the proton if theswd8+fqhkn3 5ukj+/r electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at thevv6fh2+hnldwm6) 9bt lb2s3b center of a square. When a second point charge of -Q is placed at one of the square's corners, itb32 v2nl6s w9 h6vbmt +d)hlbf 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 equilateral triangle 3i9w fnk 368imrdbwa7. When a second charge of 78 fmwidria36 kwb39n +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 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 vex/f+-a burn( pctor?

  At twice the distance from a point charge, the strength of the e;yptjx;)gy a, lectric field

  Is it possible to have a zero electric fix)o d4su,2*ktqyild i bmla (j8.u(,ield value between a negative and positive c s*lddo8b ,il.,qxu4y 2i (imak( j)tuharge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive cz a:9:h-9n2 2p01vpfbso r2nxhsira lharges along the line joina9r2xr-b 21s2h nzv:s fpp9i:o0 nhlaing the two charges?

  Electric field lines li2slc6 /6cnvjpyy+nldu -42near psitive point charges

  The electric field shc1,x jce9zw f7own

  Can electric field lines intersect in free vd )o*qmvf* /7opkzf*space?

  A solid block of metal in electrostatic equilibrium is placedj(wxm1er (br g;*p 2pp in a uniform electric field. Give a statement concerning the ele p (w1(xg bj;pmpr*e2rctric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eac7n -wbtk+6e zbcf,w7lh given thn,f7b t 7-+lkwzwe bc6e same charge, the electric field (E) midway between the center and the surface is

  A cubic block of alum0 g;dtekorr:u1 w,5i z5-d xesinum rests on a wooden table in a region where a uniform electric field is directed straight upwa uew0d d5-k,rot5 e:;xrs1 izgrd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e;bxywj j:f0.b da1de2lectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundeq5.6lv ;f7n7jp9e f a jjsl6wrd. As compared to w far65;jpl779 j j6nf.qlvesthe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conzv gm/k;7 9nxy l 2k71 4bu1swpwpns0kductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is uyhk z )a.0+hk$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net chargan5eb d lfl tl,q(m )w6czeopp z+3 :/;q5aba0e of +2.00 mC. How many more protons than electrons doesf e;ta5m e, lwp0( l qp/c5)bz a+do:l3a6qbzn this piece of plastic have?

  What is the charge on 1 kg of protons?5 w blz, c37)anxbcom8

  An atomic nucleus has a charge of tz*:a/8 d+ wkl0ktcu zm -mwi0$+40e$. 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 8. uvx:f brv.*j9zqxo2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them?:uvzqjf oxx .v*9r8.b

  A 1.0-C charge is 15 m from a second charge, and the force between them isud3m tu080hz.xv c0 ge 1.0 N. What is the magnitude of the second chargegd0 03vmt.eu8u 0c zhx?

  Two 1.0-C charges have a force between the(m bgi).nf 8,*lfn fuim of 1.0 N. How far apart are they?

  The force between a z8;.s2 kqu6l 9 ugrwmx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm1hasd( qj5m8wf+7hmo apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force ma(m5h hs1+j w8doqf 7between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fir31l 5xfk(u .v z*mabwist 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 the orig 3* z(wavx luf.bm5i1kin?

  Three point charges are pbo pxa7c w28 x8a1ych)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. ba88x h7w)co y1xca2p What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are locatede z4;hgd2gzf 8ad-i(p 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 diz8fegd2 ;g4h - z(ap= -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 square, and a second point cd;a* v4/ swu5jq k,djcrui/n5mfe. 7yharge m jyu/ r,f*q/5s.j d5v7 ;nke4cuaiw dof -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 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 = 5.0 n(+n0 r8uo :b+yfewa paC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge(p8+yr fa wa +nu:0obe?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5. k.;uc*xm5wc h0 nC is at (0, 0). What is the direction of the net forch;u ccxk*m w5.e on the 5.0 nC charge?

  Three identical charges of 3.0 mCox2ivg93tja1 are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrost2ax o1g3vj t9iatic force which acts on any one of the charges?

  Consider point charges of3nlbv m g;89q08leq 2ehwu 5k4 lmmg-f +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two chareu8ml49g-kb lhg5wqv m;2 3qe n lmf08ges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is a;/ 9flfmdjq -p-syy9ht the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed s q9jp-fymf lh /-ys9d;o the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x erzsi8u q22uh/v0 dx/ = 2a. Where can a third positive charge +q be placed so thatx2 r/q280e ihdv/uusz the force on it is zero?

  A copper penny has a mepq cff9r(h(s-8;x iq 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 agains9q bf7pj2y)hrh )lk.u t the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron i) yfjqk)lrp9b2 7. huhs the proton?

  Two 0.20-g metal spheres are hung from a common point moncbp// s8/w-xma3za /3bfcby nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them wmcpc3-f nz 3m aa/ob/ /x/b8sapart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chqc6 w:j-,sk :etlsaek.zy9 ) oarge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the : kteascj6,y .:-qzwsk9l o)e nucleus?

  What are the magnitude and direction of the electric fielz)l::- ezb- odmzfd(nd at a distance of 1.50 m from a 50.0-nfz -:mzlzon-( e bd:d)C charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit0; ;nex/hjpne *z2nk pude of the electrijz ;n0*;2n /epknxpe hc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge.eq;hs p ny99t b;pf:.y What is the direction of the electric fiel9e .n;ytq9phypfb; :s d?

  A 5.0-C charge is 10 m from a small test charge. What is the magni(u . gt8tg*idw .1dcootude of the force e cgdow.o(i8*d.u tt1gxperienced 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 dis1p o+u,1 emsjhtance of 4.0 m. What is the elemj1p,+osu h1e 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 mC chi* 7;wm3kms fmarge is placed at the 50 cm mark. Whatmwm fi3 s;7k*m 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 mC yj6po8 ihz(x/0qd -czcharge is placed at the 50 cm mark. At what point on a line joining theij/zy zc0od-6h p(xq8 two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x awc6nq70fx79zzi bz* = 0 and x = 0.20 m. What is the magnitude o*aw69 0x7bzf z7zicnqf the electric field at the point midway between them?

  Three 3.0 mC charges are li40mzq w -2egat the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC ch2q- 4el m0izgwarge. 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 eh5 zwa/w,u5c,7rgmdz( zze8the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); /dzezwh 5,arc7(,z8ge 5umzw -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 oxldh:. 6/j ck i/bznk1n a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnil.h/bd/j 6knz:ck1ix tude of this electric field?

  A particle with a charge of 4.0 mC has azts 9j +ou1hiat0z69l 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 0z90 ltdo()0kqfor:pf3jd f q ;.120 g is placed in an electric field of 6000 N/C pointing downwa90;03rok ffpjd)q :oqzd(l tfrd. What 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 ball is 7y 8i4/* y)uvvwyf afiplaced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and fi7wyf /8i)v vay*4uydirection of the electric field?

  A metal sphere of radius 10 cm carries a c2jg,+ 7zcdf 6 sjlx+giharge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sl7fjj6,+ gzxcgd2 is +phere's surface?

  A metal sphere of radius 2.0 cm carries a ch7pa jl92m0 yelarge of 3.0 mC. What is the electric field 6.0 cm from the centerll2jy p9aem7 0 of the sphere?