State the law of conservation of elegmafn 0(o;r9(jf o 7aictric charge.

  Is it possible for two negative charges to 1xjy-jqay 7*jnlrtau - 3wm,2attract each other?

  Is it possible for a positi0fjyk ft dk0;) ,:foach58vuy.nx6 acve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dur-hxb+n a8sex j rpb1.1++js haing the process the glass rod acquires a positive charge and th-h81nh1b aa.+e+xs rsjpb+j xe silk

  A proton carries a

  The model of the atom s5 xb39ppmd2 kyhows a

  A neutral atom alwayq+:nj :u e k(1.7e-pr,nxzomkj3 gmrys has

  An atom has more electrons than protoe60 mimt;wp k1ns. The atom is

  Materials in which the eh25d fmpz +2yalectrons are bound very tightly to the nuclei are referred to as5ap2ydzf 2mh+

  Materials in which the electrons are bound very loose;1iqi2p 0kn4zcof nh)ly to the nuclei and can move aboi;41ki2 o )qfzphn cn0ut freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged met.-ve-+o .oyp vsc bhl)al bar. The end of the metal bar farthest from the chargedcp+.e lvoyhb o.v-s)- rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Theydlz ht;0qsm/93 -mp sg are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is co0 9sm3-shzl/d;t p gqmrrect?

  How can a negatively charged rod charge an electroscope positively cbrt;ar*kg76/rxf k ci)4i*p?

  An originally neutral electro 16k 5rebitux+scope is briefly touched with a positively charged glass rod. The electrotei65 +1k xurbscope

  An originally neutral electroscope is grounded brieflyvzmftnl8,n( o81xxy fc wp .:; while a positively charged glass rod is held near it. After the glass rod is removed, the electrosof,y c f.tvnxl8 (x:8n mz;wp1cope

  A positive object touches a neutral electroscope, and the leaves s8grwy *dq+/ y/fi( xnceparate. Then a negative object is brought near t/iwg(qd/n +r xy8 *fyche electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. o e..(pvk*( 1tdomuwcA 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 ballpv1m*uedtkc. w(o.(o 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 Coulomb co ybrtbwp4 h*a0z da1nfs2+6l,nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lq.(m.q.lkqyllv/e2 harger in magnitulm(ey/h qqvk 2..l. lqde than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pla5)n ymdqj mh5pk-h1 /zced near each other on an insulated 5/-mm) pqdhkh 5n zyj1table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o, jp*vrgv*suxn p14 s/ aid830l tap*ij+sc6gn both objects are doubled wia*l ,jpppxvni a**6 g83s trsu0g ijc1v+d/s 4th no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrjtnza62v pq*n 9 (12xf 9zugqcglw-)uactive forces of F on each other. If the charges are separated by a distance of d/3, what are(tju- qxvuzgn2 l9 9znw*6) 2pc1gfaq the new mutual forces?

  Two charged objects attract 0i:pw3ym8/agcl o i2yeach other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, 80ol 3yamw g2/c:piyiand the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protp3d:7brumdax1 5 + mfdon are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electronud7rpxmfad:d+ 1 b35 m?

  An electron and a proton are separated by a distance of 1.0 m. What happ sd*r +gtm5u(y gzd+e;ens to t d5se(*durgtz y mg++;he magnitude of the force 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. What happenseu9kwz86 7 w9u b*rtuwe2/kbf to the sizrt8weuu26webkb 9 f7k9u/*wze of the 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 squ *21.fi,v3glxggc30vehc4 srr qma 9 sare. When a second point charge 4q9c0s1rgcim2v*lx v3rg,f3ahsge . 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 the square?

  A point charge of +Q is placed at the centroid of an equila;cct sh8qz0 *tteral 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 to a third charge o;8tctsqh z*c0f +Q placed at one of the other vertices?

  Which of the following is not a veuy3hk)3r.5nd k d:sw-i l(rc kj,; dnsctor?

  At twice the distance from a point charge, the strength of the electric fie :6kds*w:fshu ld

  Is it possible to have a zero electric fie7wnzg:- iiss- ld value between a negative and positive chans g-7iw:zsi -rge along the line joining the two charges?

  Is it possible to have a zlxbe+- * i,tdrero electric field value between two positive charges along the xtl- ,r i*de+bline joining the two charges?

  Electric field lines near psitive point 2g5xuhz+t nrt*4 bi+ktze-io 8 6 (igzcharges

  The electric field showl77lm8ez1 . ghrm(/ fuxk p*0 zpqdkp.n

  Can electric field lines2)93tl-ry w aafk hj;i intersect in free space?

  A solid block of metal in electronbm2x wld59p5 qslk6r 2i0v0vstatic equilibrium is placed in a uniform electric field. Give a statement concerning the electri5qpx0ln0 d65rvs 9b22mwl vkic field in the block's interior.

  If a solid metal sphere and a hollow metal spher84obf- g9j3 xllu) kxie of equal diameters are each given the same charge, the electric field (E) midway bet3fgl8-x4i9 uxb) ojlkween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where jo 5bys5d5mxu 3cbk.1a uniform electric field is555byuk xosj 1.bcd3 m directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is inzo.o 5j e4lb7q electrostatic equilibrium near an electric charge

  A positive point charge is enclosejud64hwpy a h7 pm tqfx*:0+v5i 4so.gd in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fielv+g7d mq:s4p0ih* x5 ato pj6wf.u4hyd at a point directly above the hollow sphere has

State three properties of condud4v8md e31 aar7 e+h w+yort5uctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is jpis4a:;7,t.)wqal p e68gst b dn0kfy68zbl$e = -1.6 \times 10^{-19} \; C$. 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 more protons than v, jc,9i +6eqtiw; wmcxu,*0xv-a omoelectrons does this piece of plasticwt0 , i6+-o;vxo,xmwe9c*mia cvuq,j have?

  What is the charge on 1 kg ed*.nxu 4uzst4ou s )v z-f55mof protons?

  An atomic nucleus has a chargq0e 6u)k/als)h qn (oie 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 cmkg,0ls4n l gd/(:mg wd, have charge values of 2.0 and -4.0 mC, respectively0(slng,4md:g /lw kdg. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forc.)6vju9 b jcan:q n(nle between them is 1.0 N. Wnqn9 :vju b() .cnlja6hat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arewb)a )pr8.((/ f g5tnooqsoyn they?

  The force between a ewf7l hf51.tdo3 uc/s-; 1x optmfamo4di91 z$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exa96nswvq 5w0r e9s *qdpe yk*4perience a 1.0-N force. If they are moved n59aspeqsw r*9 k6 0weq *4dyvto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The9u7eu ph e63d 95zasxc 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 andds3z eu5 x6eac97u9hp direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-a1(*lhfw8hm18qtq pp i xis. 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 eleqit(f lw8q*p1m h81 hpctrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at 1dxq2be1l d r0x = 1.00 m; Q2 = 3.00 mC at xxe b2rd1dql01 = 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 center of a square, and a secon6zwwyvt,b:gakbd (ly+ q8o/, d 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. Whatv/a: w ( olw,y,bg+byd86 zkqt 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 9bsvb. /23ttjgdk y4m m); Q3 = 5.0 nC is at (0, 0. /mbvbytj 4k3 gsd9t2). What is 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, 0.10 m); Q3 = 5j)lxx gv(pn:q9 ;jw3 d.0 nC is at (0, 0). What is the directio9q)dvx:wx g(j3p;lnjn of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterm(oj6gn1 0vte/6-bbl awi* qp al triangle which measures 30 cm on a s nlo06w1jg m ae*/b- qtpbv6i(ide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4v;h0 :6uyxuf08w4 fgm. 18hymigc yhqQ, which 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 forch; w1yfxfvm:g40hu8yq6i u my 0hgc 8.e acting on it would be zero?

  A +3.0-C charge is at the ori;t3pbjhuh0+ jw+( m uz. -:s 9roionxogin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed 9ubnrmj3x+ji-0szw: .hu +h;o(p too so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed 1qmni5 qrt)9qao a)y8mlw -r2at x = 2a. Where can a third positive charge +q nl8w5q2)9 r1a-qyt)amri o mq be placed so that the force on it is zero?

  A copper penny has a mas1urmuj dalk4sc 70 )4ns 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 gravity byb k9y mj1t-oe5 the attraction of a fixed proton1e9bo5- tjymk some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncond* lg 2no5 9ghuxlh5;u9p*z pwfucting threads which are 30 cm long.x5n g9h2wz*hfl;puog9 *5 ulp 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 has9(dxnr- -,l *dlh,rvxac/zyr a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fro d-drva 9*yrxhnxl,/ c -(lrz,m the nucleus?

  What are the magnitude and direction of the electric field at a distance s jz3f54 ,s t(vzpy.alof 1.50 m from a 50.0-nC chargezs5tzal3 s( yv 4,jf.p?

  A 5.0-C charge is 10 m from.r7pdo(yh*dbyl +v5 n a small test charge. What is the magnitude of the electric field nhrbdl yvp*(75d+o.yat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directij 2bw;miht::hln01u ion of the electric fuwjhn;lt i b:2h:01 imield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of ml(7 egs-sak3the force experienced by a 1.0 nC charge placed at the locak- eg7m3(s asltion of the test charge?

  Two point charges each have a value of 3.0 C and are separated bps xl* u(cq)4v/, tq9*wstxjv y a distance of 4.0 m. What is the electric field a t swxjtq4p),/s(qu9c *l *vvxt a point midway between the two charges?

  A 5.0-mC charge is placed n8 z lvvm)1h5m9sd6j ek7u.t +* toqobat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What ivhb mj96 o1sdut.v mzt l)k+5o8nq*7e s the electric field at the 30 cm mark?

  A 5.0-mC charge is plac5yb0/m xs;: r uhwnhx+ed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 0h/:yw+rs5hxxnu ;mb cm mark. 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 aaiv2 guz,)ajcr0sbr 3;9e)- h1buknx = 0 and x = 0.20 m. What is the rhjc ; -2 van3r) )9iubukazaegsb10,magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of s 7t9k3m8k 3yj kcn 1mpwu;sy;uide 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centerukcn;m9 3wt8pj7y1 3sky ;mk u of the square.

  Consider a square which is 1.0 mw)kkc7u 0bf (m on a side. 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, 1). What is the magnitude of the electric field at thm)fw0(uk7c kb e square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unifh3l/ hra2 vx6sorm electric field. What is the magnitude of this elec xavl26r /sh3htric field?

  A particle with a charge of 4.0 mC has a mass of - 8r8mhn e 9i4ara3iia$5.0 \times 10^{-3} \; kg$. 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 2he,; ) e+slun-n0x e2adr aacelectric field of 6000 N/C pointing downward. What charge must be placed on the ball for itehe20-nae 2+a ;cl,urnx s)ad to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. e8fm atz:*wk hv uff,s,j,4pp; ;n2 omThe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the e;,:ktj fah;ov,,pm nmz4*2s pew8u f flectric field?

  A metal sphere of ragb x1;7jb* kun u-+sx7 a bknzzmko;op-2 fb77dius 10 cm carries a charge of +2.0 mC. What is the magnitude ofx k7jsz;*7b babozx-ku ngm+f17o ;n-kbu7p2 the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries f;d +8pbttl2cg 36dov a charge of 3.0 mC. What is the electric field c23v+otldd 6;tp8f bg 6.0 cm from the center of the sphere?