State the law of conservationm 0qlme: 7ceg7dc .bvwxjn(2- of electric charge.

  Is it possible for two negative chargz;+70wvo bom:+k*jgs :apw6 (iyv nmyes to attract each other?

  Is it possible for a positive and a negative charge to attract eac,sjbpe 9/ h.*glf4juc5tcf 6j9w5w axh other?

  A glass rod is rubbed with a piece of silk. During the process the glveue ygt2ql-7+ b 6b*6iotes 7ass rod acquiotybtis*6g e+ -ev6elq7 b7u2res a positive charge and the silk

  A proton carries a

  The model of the atom showsgk ad1f1 ydl-n)2.t2e1rtn ed a

  A neutral atom alway*zc5qmh 3s1zm s has

  An atom has more electrons than protons. The .2ve zgc-f8f tatom is

  Materials in which the electrons ah 7ibn 5c)mu8u6tz,aky7 6ubjre bound very tightly to the nuclei are referred ji5h6kzn u68 t )bm7y u7b,cuato as

  Materials in which the electrons are bound v.g 5u6po 8ebzgery loosely to the nuclei and can move about freely within the8p. oguz6geb 5 material are referred to as

  A negatively charged rod is e4: snzt8ds-gn1n/ 9 4rytv: x 5geimtbrought near one end of an uncharged metal bar. The end of the metal bar farthest /e9vzt8srnn x5g:d:iyn1 s tg4t e-m4 from the charged rod will be charged

  Sphere A carries a net positive4r0ryy6 erp;mi;ofqt ;z3yy 3rnv/ f3 charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a w v /ryq3 0zm;;f4ip6; yn3rorty3yer fire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an enp 5 q.;.s7vdfdxmhz:lectroscope positively?

  An originally neutral electwkaye;+j *ye (roscope is briefly touched with a positively charged glass rod. Tk+jye we; *(ayhe electroscope

  An originally neutral electroscope is g z8v lzqhy6::crounded briefly while a positively charged glass rod is held near it. After the glass rovq8y6z: :hzl cd is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separatek6 /d-fs (trul. Then a negative object is brought near the electroscos r/6( fd-kltupe, but does not touch it. What happens to the leaves?

  A large negatively charged object is place;.azcr0 ucz0s(kp. me d 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 th0rck .p 0mz(zce;us.ae 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 +l) xsf4ujb2 aCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg im-cgg + ir cks,z/m7a*soh68e is larger in magnitude than the secogs7c*h mragcs68/ k- ozi+, mind charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearo4ubys tq0u: pxkp-/a17q7h3 ct4n xt each other on an insulated table. Which statement best describes the electrosh/ t:qybk0x74s-cx p4qa1 tuo7 unt3 ptatic force between them?

  Two charged objects attract each other with a certain force. If the charge*y ctsr+ b,.hos on both objects are doubled with no change in separation, the force bebcy. *,srtoh+tween them

  Two charges are separated by a dikf 9rzb/ +yt5qstance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance 9 5tyf kzr/q+bof d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to tdv/ li9p0jf 4wc)s tk;he 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 forcwvl/ci ks p49;f 0jtd)e is now equal to

  An electron and a proton are separatedk)i,bd3rd;dpa-n-7 a2s ybs42 qswrl by a distance of 1.0 m. What happens to the magnitude of the force on the proton if adl-d 2b 2-;b7ik sayqsdr pw 3n,)ra4s second electron is placed next to the first electron?

  An electron and a proton are- k 4)fv*adoi(onuq6x separated by a distance of 1.0 m. What happens to the man-v6kfq4(d x uoai) *ognitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separtpgk . ;/;a *(pj c+bqkk aettp2:ms1cated by a distance of 1.0 m. What happens to the size of th kpj1kbgmkt:a+c / p;ep( stt;2q. ca*e 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 square. When a secon4d3a 1l,qireqd 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, identie14aqlrq i,3dcal 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 th 1px mwj58ofpgvm 73z2e 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 force that acts on the center charge due tvmm 5jpoz3 pf7g8x1w2 o a third charge of +Q placed at one of the other vertices?

  Which of the following is not a: ej*p-pyop( f vector?

  At twice the distance from a point charge, the strength of 12:htoc mbsh;z a/scken(;9p rn. 1xvthe electric field

  Is it possible to have a zero electric field value between gx :36-vh.vebxv uc78(cslt b a negative and positive charge alonct vb vbgxs8x3v (e:-6.ch l7ug the line joining the two charges?

  Is it possible to have a zero elel6anlc/w -9lo ctric field value between two positive charges along thl- l6aonwlc 9/e line joining the two charges?

  Electric field lines near psitivecks.7;65 z2mo vugscj point charges

  The electric field shoa)dkhscv h(su (4 og2m)xvss,u s6(h/ dt.co2wn

  Can electric field liab c jm16x4;t5 u6mibgnes intersect in free space?

  A solid block of metal in elec-uigw ) + 4/(ki3ldfhppqzk* i x4u/fptrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric f-i(l d+)kpg/ pf 4uiz * ihpx/kf4wuq3ield in the block's interior.

  If a solid metal sphere and a hollow metal spapqppw wcwh q6 70:1x-here of equal diameters are each given the same charge, the electric field (E) midway between thw 6x1:0hwpq7 -pc pwaqe center and the surface is

  A cubic block of alumq nyt0u mf-jbvu,a/xef+m:78 inum rests on a wooden table in a region where a uniform electric field is directed straight upwa,ubf-vmftj/0e8 +qnax:m u 7yrd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic eq*g6 o4rzz ce5(w-zka l5r c1fruilibrium near an electric charge

  A positive point charge is enclosed in r7 tnc:7f2a lj+ox2ok a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fie:kc+faonr xo2l 7t7j2ld at a point directly above the hollow sphere has

State three properties of conductors in /*hfadd ci :svd2to;,static equilibrium.

State Gauss's law.

  The charge carried by 2te10 1j 1sbqij6wwrl25 txpyu9xvy0 one electron 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 o32dlmo p z2i3lf +2.00 mC. How many more protons than electrons does this piece of pl 3l2ld3p2z oimastic have?

  What is the charge on 1 kceru/19ry2.rygz c1p ,y5 xjpg of protons?

  An atomic nucleus has a charx4p ., blvqka5ge 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 cv ar,1u)v 2tleharge values of 2.0 and -4.0 mC, respectiv2)vle ,tra 1uvely. 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(, py*g+gbzzj9cx+ nd is 1.0 N. What is theyb nj gpz( cz++*x,d9g magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they kl8s- e vesknp11,gkq 45fcta:d h6,w?

  The force between a afqk3o9s xm99k c w50g$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initi0nx : ytkc+4vmk/+azmc 2xmmph44 za)ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between z4a4:h ta cm/ mv mncmx0+42x py+z)kkthem?

  Three identical point w 8-s *djobw+jg )fxg7charges of 2.0 mC are placed on the x-axis. The first charg*f+j d )sb7g-woxg 8jwe 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 origin?

  Three point charges are placed on th afa 6wm + o8s;6h lw.ufx:n;)ctfp:tde 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. What are the magnitude and direction of the electrostatic force which acts on the charge amnp;aaswwff: ltd+x6uc 6o;h8: tf). t the origin?

  Three point charges are located at the folll trg 7x+3zgj;owing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.x+zj3 7 rgtlg;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 charge?

  A point charge of +Q is placed at the cen -e23uspcvs-vysg0r / ter 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 magnitude of the force that acts on the center charge if a third y0 v2/reps3cv usg-s-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 nC is wg;e. .e kh*k 7ktfzej06n0xu at (0, 0). What is the magnitude of the net force on t7jetk e.0fn.kh g0 ;x6z wuk*ehe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (og6nm p y00mwzj )k7 y6qsxo(60, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5. qsopy6mjx6kg)w yzo6nm(0 070 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of y2f)y w5qr5ucyj4h0l1n 7d fean equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic c) uyflh07r41dn f2ej 55yqwyforce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whlp:, 5,av/qeub2kup+s w1.q mnuy9rwich are 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 f.s/ u1upr,ubp9aqnk,m5:ww veqy2l+ orce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C c 0mkt8c e+-:ajc9t6.j sjqixcharge is at x = 4.0 m. Where on the x-axis9 cx mj8cjqkaj.ts6 :ic+ 0-et can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the oriuf96bsboeslhw*i a 0x,)p;4e gin and charge -q is placed at x = 2a. Where can a third positive cheh* 0b px a subs;)o6e94l,wifarge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalse6kq7dtvsp3w,d + , j 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 forcpy bz -p;vkut:v11 o1gk)t of0 py2(oqe of gravity by the attraction of a fixed proton some distance above ivb) f;toku kv opyot0g:12z1p 1(yqp-t. How far above the electron is the proton?

  Two 0.20-g metal spheres ard 72 ml*idwptph jt-,-e hung from a common point by nonconducting threads which aj*t2,ld- tip-d h p7wmre 30 cm 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 0szihxe0 s5 wl-4- j*2bitn jga charge of +40e. What is the magnitude of the electric field at a dis-h 5j4sit2gi0w0ln- szj*bx etance of 1.0 m from the nucleus?

  What are the magnitude and direction of the z 1qhq*1ozv. delectric field at a distance of 1.50 m fro .zz11ohq* dqvm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge9,b: xutzmr 3,kpp4q e. What is the magnitude of the electric field at the location of the te uzx3:mp,,q4 b9erptk st charge?

  A 5.0-C charge is 10 mnu.4-xy.vru-vn 8tr p from a small test charge. What is the direction of the electri.. r8t- -vnpuu4rxv nyc field?

  A 5.0-C charge is 10 m .kroh- 6 rqwh9from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location .hrwk6h 9orq- of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dis*zmiks x/1p .ddq: ug.tance of 4.0 m. What is the electric field at a point midway between the two cha zkp*uq g1. :/ixsm.ddrges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and abc i3fz6, e+nn -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mai b6z, n+3ncefrk?

  A 5.0-mC charge is plac1ju6 a)zm+sv8spgi.lk,by()rv xbr -ed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark.) +sbajk sx1v ur)my bz8glvi 6(-,pr. At what 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 = 0r5i0/i lp ;cji.20 m. What is the magnitude of the elect0/i ip i;rj5lcric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sqm)b 5, x*vspmbi1(syr zi)m: +qdr5b fuare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fii (sfmq)5,sbb*y imv1:5+rr)xm bdpz eld at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the xao82t ce3h 2 -.cy6yb8pphzkcorners of the squ82k 6 p3a-2ch yytexh8zc.po bare 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, 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 uniforo.x tyjra 00:g, guw6ri,d0mlm electric field. What is the magnitude of to r:iag0uj0x6w r,t0ly .d,gm his electric field?

  A particle with a char zlt6+-xz000y.tp, rx o+ c vvi4uywxqge of 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 609fvcfc8oh cwr 4dr5 2300 N/C pointing downward. What charge must be placed on the ball for it w 9 ch2ccr5 fd483rvofto be suspended?

  A foam ball of mass oyzmew o07vell1 (// zvm6 rbs5*: fbp0.150 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.oybz0v ow5z*mr1vm (bp :lefes7 //l6 What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is thebplv;2(( s1nvz-dcv2d nwai- magnitude of the electria(- p21zvs;n(n dibl-wcvv d2c field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cmqnm/k 8z*/dcs i+c 0mp carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sp0+c8* /kdz/m cqm nisphere?