State the law of conservation okgfwhnp b-) ut/ 1u4;uf electric charge.

  Is it possible for twi,cnu4 g qfb-tiu u524ytu 0z(o negative charges to attract each other?

  Is it possible for a positive and a negative charge to attraz20n. n*3i cyd ei.idrct each other?

  A glass rod is rubbed with a piece of silk. During the v(h rz;nwcc;,8d-q og m8zdh5 process the glass rod acquires ad z5;d8rwh , z8h-gm;q(ovcnc positive charge and the silk

  A proton carries a

  The model of the atom aeg8b0q sd3 7/ij;vsf shows a

  A neutral atom alway 0h;xppe-xkf34hwr- lr6yzo:s has

  An atom has more electrons than proi5,lcplg . fe5tons. The atom is

  Materials in which the electrons are bound very tightly to the nuc+;s2z3;4 yhgb+da,dndkjp m u lei are referreddzn sbd;ak;+ h4j2 m3,yu +pgd to as

  Materials in which the electrons are bound very loosely to therja:*hogjl)u n wm*4 / nuclei and can move about freely within the r *jw oalun4m:g/)*jh material are referred to as

  A negatively charged rod is b cy4v(esv0z+1 )ntx zirought near one end of an uncharged metal bar. The end of the metal bar farthz14xty(e0nv+ vi) csz est from the charged rod will be charged

  Sphere A carries a net y y4ose* 7)u1 fpt(psgxum+f3 positive charge, and sphere B is neutral. They are placed near each other on an i7)my1+ppsfy eu s *gtou 4(x3fnsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electros n djjj7 mc7m/d,e -1c hec1e*kpb7:brcope positively?

  An originally neutral electroscope is briefly touched with a positively cuai 2tt 90:oo5 gi(licharged glass rod. Th0 aigoi 2t(ilt9u5:co e electroscope

  An originally neutral electroscope is grounded briefly while a positively chznrkf7k2d3 x /arged glas3/xkdz rn f27ks rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separatcp*jw /fae/dy9sbqx m)awh4*1 -fy 1ve. Then a negative object is brought near the electrj d4ae9-cy*avwq 1w/m/* f)p1fyxbshoscope, but does not touch it. What happens to the leaves?

  A large negatively charged 95g4;q v/x bxqi y ne00uvmxuu3i*o/93ntp cbobject 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 timo9uun n03ebm ixxtg/ y4i9q*/qx; v uvc3pb 50e does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constrw2)zs no gkge7 iolt.l.k;3 *ant $k$, which appears in Coulomb's law?

  Two charged objects are separated byb:ppi+ :m2 uhetaydg*x0 zl8, a distance d. The first charge is larger in magnitude than the seconx*,bpelz8 :gu:ay 0+dpt i2h md charge.

  Sphere A carries a net charge and sphere B is iu/ywxg.9aof)hny5 15f gz/ cneutral. They are placed near each other on an insulated table. Which statement best describes the u5nz1hf9i xyo5gawcyf/.)/g electrostatic force between them?

  Two charged objects attract ea0+wl l8s cjeu4ch other with a certain force. If the charges on both objects are double4l j8ulcw+ s0ed with no change in separation, the force between them

  Two charges are separate1f.l *a nl0zddd by a distance d and exert mutual attractive forces of F on each other. If the charges arlzd.n01d* lf ae separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with ad6.do7 jy,4vy rpjkl/ force F. What happens to the force between them if oned y jj.6rv 4k,opd7/ly 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 is now equal to

  An electron and a proton are separated by a distance s bwhu l (e 20/igk3aiz*p2r6lof 1.0 m. What happens to the magnitude of the force on the proton if a second ele0iweb2(/ iasulhgzr3l p*k62 ctron is placed next to the first electron?

  An electron and a proton are separated by a disp:w64* osh. cpez)u z(kb 9xmbtance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton? 6hb w k4zm:)c(9.ps*zeubpo x

  An electron and a pr 4o-he+cmojcc+a; aj,oton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if toc;+4hjecaa m cj -o,+he electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed afsrsy/voz fq ;2/ l9t;t 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 electosy; ts9v2;f f//lrq zrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilviuj d.:r3l 5wateral 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 force thl vuwi5 r3.jd:at acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nox -)n+e(e c el71etyb,tt, wiej/wd4 rt a vector?

  At twice the distance from a point charge, the strenb39ntjgsf5 3sr c+)dqgth of the electric field

  Is it possible to have a zero electric field value between a negative an9cjlixa; .0 g7, hozxjd positive charge along the line joining the two hjigj,.0 xcl x;az97o charges?

  Is it possible to have a zero electriqy p x4.:egr bb5/jb5mc field value between two positive charges along the l:ebp.yq5m4 /5 gbjr xbine joining the two charges?

  Electric field lines near psitive pg l31aq eqan(5oint charges

  The electric field show;aj5u;ypc + ihv(b-1dru 9rlnn

  Can electric field lines intersect in f t +)jmut6c7otree space?

  A solid block of metal in*n4z9wjs bho9 b(gn/ l electrostatic equilibrium is placed in a uniform electric field. Give a n b9(hj9oz l*gbns/4w statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eac1ra1g v ica5a3h given the same charge, the electricr5g 3va1a 1ica field (E) midway between the center and the surface is

  A cubic block of aluminum rests on awy c1 m)i+yh;e wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bloc)c;1+mh yywi ek's top surface?

  If a conductor is in electrostatic equilibriut0.nowx n))l az-/iv ri m5id;dy(6djm near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that t; m3 m )a-9w6prfteoiis grounded. As compared to the case without the hollow sphere, the electric field at a point directly abe9m )r3m t;6it-wf paoove the hollow sphere has

State three properties of conducd,soo0nui6+o*y4 jd if2f1da vz4d1ptors in static equilibrium.

State Gauss's law.

  The charge carried by one electron izq zg/ y 8un,k,q+4zij-ro 3pes $e = -1.6 \times 10^{-19} \; C$. 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. How many eh2 zli3lmk/.more protons than electrons does this piece o2k.i/lhem3l zf plastic have?

  What is the charge on 1 kg of pm*bu(fk8a tu. rotons?

  An atomic nucleus has a charge of xj d(1:t,zc fu7wyy;e0b cbg1+e4fva $+40e$. 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 mC,d uv5jra s* ;37 rbf:iunlh)2o respectively. What is the magnitude of to;dh5su*r afi)7:rnj3 vu2l bhe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fojpk- +xe g/s6hqwj7i3rce between them is 1.0 N. What is thie +wj 6g-xs jkq3h/p7e magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Howk7dru/l vf9a; far apart are they?

  The force between a g 0i )xin*3xhrzm t:3s$30 \; mC$ 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 forc 5b2tn4)d5drh+sdi u ce. If they are moved to a new separation of 8.0 cm, what is the electri4 rc )2+5bsd5hdt iundc force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first c+dj8nf ucu dj4il*e -sl ig* ;an/bq8uw:k4.vharge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mardnu:buu48j g8a *csv;l nfiq*k+wej i4 -l/d.k. 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 mC is placed at*u. wvvus gb;/ the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What.u;sv gb/*w uv are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges arev yo cqg,7)tvnp /g2t8r zjg-* located 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 8*p)t7 g2,vrz-g/ov gtjyq cn magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is pb3, . prvg*8*tfc),fo+j1cinhvvdg 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 ma3vghfcf .) oc8i*bnvdp,rvj,1 *t pg+gnitude 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); o 7 eyr1 rsq3ytx0-0znQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).7yyxze-qr r0st03 on1 What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 7;(hp( me ejqwkq,e7z m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction w h(j7z;p,ee q(7qekmof the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral 4gt+v:+4 0lac.hf )wuvj p*dd lk(l lftriangle which measures 30 cm on a side. What is the magnitude of thefk4d .v)+ +(phwj *lvlg0 tldl4fa u:c electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by w 1st zxvie+(z;5hahg/3-wxu 3.0 m. At what point, on a line between the two charges, would it be possitz1ai ehhs ;w5/x 3ux(zg w-+vble to 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 x = 4.0 mlkj ;l*f;+j0hl vw(ws9s g+ ave40sec. Where on the x-j0e0fa l*ll4vse ;w cks; +hs g+w9jv(axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at v60 iy j t0 (6aiiu*znxkx8sx2the origin and charge -q is placed at x = 2a. Where can a third positive charge +axv t xx0i6uizysj(n26*k 0 i8q be placed so that the force on it is zero?

  A copper penny has a mace nhf1p7)t v 4;vs5lm: qnwcrt, -.fjss 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 against0 tmri9ap 81 y09wcjtj the force of gravity by the attraction of a fixed proton some distance above it. Hj9tt90m r 8yp jw10caiow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threamy w0bwr:x3y2 ds which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unt3xw: rmy2ybw 0il 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 is the mag*.eryn6pjz9sa3*ubo- i 1rtzjb3 k( gnitude of the electric field at a distance of 1.0 m from tzt -js1poeirry (gja3bzu.b3* 6* n9khe nucleus?

  What are the magnitude and direction of the 25mcoo3ygrvl:etyeahr/9- y /bpny d(k. - j(electric field at a distance of 1.50 m from a 50.0-nC charge?5d/go-jpev: .(rhr2 yetl(3 -y/y9onykba cm

  A 5.0-C charge is 10 m from a small test chmow r7;rfhgm4r)c, 3yarge. What is the magnitude of the electric field at the location of the testrcgm,o7hmyrr f)3;w 4 charge?

  A 5.0-C charge is 10 m from a small tgm *cd3 veejapn.,ddw )8t:3-ot 6fjeb f8o1o est charge. What is the direction of the electria*of1m) g3d nte688 j:dbv -co .eo3ewp j,tdfc field?

  A 5.0-C charge is 10 m from a small testawlt szs0kzc /p0b /;6 charge. What is the magnitude of the force experienced by a 1.0 nC chaz0ts6cl/p zs;bw0/ k arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan7f gahid (s+l4ce of 4.0 m. What is the electric field at a point midh ifga7(ds4+ lway between the two charges?

  A 5.0-mC charge is placed at the 0 cm3kecq;0h/ a ou mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at theu0h3o ;cq kea/ 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg k/g3wnaso6 - 64lzvnb;hq(x je is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field w(q sbl-kx6 nv6h;gjz34/aon zero?

  Two point charges of +3.0 mC and -7.0 mC are vt+;f1uj;x4e bmm p.x uaq1 g)placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bquxx;1 vm mge 1j+)p atf.u4;between them?

  Three 3.0 mC charges arbr/z. ,*fg/msb02hikqwbw :te at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centeb/2wir*q0 / fmhwb.s, :zkt bgr of the square.

  Consider a square which is 1.0 m on a side.bx:hgdpfv0:t) 8 p;ti 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 mC at (0):vbhp0igd tt:f;8xp , 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on 5lk9.v;hg , wb9kd ed2siayt+ a charge of 5.0 mC when it is placed in a uniform electric field. What is the m9by9s,g e2dah+d;w tv i.k5klagnitude of this electric field?

  A particle with a charge of 4.0 mC has a53*yc/m 2,( ky6qug byq aqsxs 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 ;k3qfad/e z7v7q4hw g field of 6000 N/C pointing do4dg7qq/v73 wae ;hfzk wnward. 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. 7ewzue2y 38 r3e 4uuyuThe ball is placed inside a uniform electric field, and iu483ru237uuyzey ewes 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*s:y vnx ytr/:8y/jmb.0 mC. What is the magnitude of the electric field 5.0 cm fro8ns*y:r xj vtmy /:/bym the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCd: .l/l9uc0b wzvs ,fv) cq,tg. What is the electric field 6.0 cm from t sv:lucgf zdq/, 9wcl,b)v.0the center of the sphere?