State the law of conservation of electric chargsj i.x/ whqe )slahngo72 eg)nlo;29, e.

  Is it possible for two negative charges to attract each other?r5 hj(p k3pz4g3+memgx-tb k7

  Is it possible for a positive and a negative charge to u(j(:yovkm / zattract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass r i):,k3nqvjj rod acquires a positive crkj,vn:) 3iqjharge and the silk

  A proton carries a

  The model of the atom ;c 09);oe8zi 32w upd2oq: ofukjf( c.dmhaty shows a

  A neutral atom always gqvgl8hh1*do4)40ow+d / w vme)ashk has

  An atom has more electrons than protons.aoc ct8sby( b) jq g+o81l,(bx The atom is

  Materials in which the electrons are b7b2 +xc7 ier4effm2ws0xe wv5ound very tightly to the nuclei are referred to 5r7w eec+mf s70b vx2xw2e4ifas

  Materials in which the electrons are bound very loosely t0 ;0sx8ybddj+m rig37 p3dssio the nuclei and can move about freely within tsiy did brpj 8x3d;s7g+0 m0s3he material are referred to as

  A negatively charged rod is brought near one end d4* svvt(l qb3of an uncharged metal bar. The end of the metal bar fart34 b*dsv ltq(vhest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar: ssaag+h7jtgc/ rpqj4t k qx-a3c8 0;e placed near each other on an insulated table. Sphere B is briefly touched with a wire that iq30tr xgt cspks /aa-qag8hj c;7:+j4s grounded. Which statement is correct?

  How can a negatively charged rod charge an m c9 (b.u;hnsielectroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargg8k;y1s dcbe. ed glass e.kdscy8 b; 1grod. The electroscope

  An originally neutral electroscope is grounded briefly while a xfp+c9*i 4dqb positively charged glass rod is held near it. After the glass rod is r*pfc9 ib+4xqd emoved, the electroscope

  A positive object touches a neutr+9g2ph c3 yumrry +fo;rwd6;jal electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happe2cmr uhrf; yr o936 j+dwgp+y;ns to the leaves?

  A large negatively charged obj bga(b5gcjt7)),zz 6 fxg4v ura9 qtf7ect 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. xqv(g67r 4gatuzbc )b,9 )f7zgfjta5 What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constan l)dbx e61 bgcc2:m2tqt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger ikdgayfky+)l 5xx): p) n magnitude than the secondl)ypak k5gy:x )x+ fd) charge.

  Sphere A carries a na m30,iqnc ypcw2/g0oet charge and sphere B is neutral. They are placed near each other on an insulated table. Which stag/cnq c0 y,a3o0mi2 pwtement best describes the electrostatic force between them?

  Two charged objects attract each other with a certai6lvotxfc04 f (iz3*,bjo wx-hn force. If the charges on both objects are do 3 fwxhjixv ztc0fo- 4l*b,(6oubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractikhc.i:pd im0.vp 4f* ive forces of F on each other. If the charges are separated by a distance of d/3, what are thph fmpv*.i.id 4i :kc0e new mutual forces?

  Two charged objects attract each obiaj t b(hv- zep4+w4mj/6c b-0bqz o ej91p,bther with a force F. What happens to the force between them if one charge is doubled, the other charge is trip j ob60 bb maeejb i1(zjcbtp vp-w44q/+h9z-,led, 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 of 1.0 m. r*1uajq*yo(f What happens to the magnitude of the force on the proton if a second electron is placed next to(rjf *oyua *q1 the first electron?

  An electron and a proton are ;pf: +wfx/x3irere 6vseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electrepie ;6fwx+/xr vr 3f:on if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.* weie/5sks;h What happens to the size of the force on the proton if the electron is moved 0.50 /e*e;ks5ihswm closer to the proton?

  A point charge of +Q is placed at the center of a sd7 2d9k3 hh/g(w )vsv9icd ascquare. 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 c9/hgdsd9(d hviv2acs7)3w k'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 pla1d szcjw 7m-f+ced at the 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 char-zj+1w sfd 7cmge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is notdm(m mmg8i,)e a vector?

  At twice the distance fkc -tpv 3(m;pjrom a point charge, the strength of the electric field

  Is it possible to have aq)ojvwjx( 1)x lp cv74dj wzf:w(sq0x 3 ,,cda zero electric field value between a negative and positive charge ax )wd(,,1zx)73 :(l jfwxp0vjw4cdv jqosqac long the line joining the two charges?

  Is it possible to have a zero electric fiel57y +r9rrdw+6 )g c5s bfqjl k1gl2bftp1st.gd value between two positive charges along the line j5+s2r)pw tgfr y7s+b dc.brkl11 9 5j6fqtggloining the two charges?

  Electric field lines near psiti8qk8ici 59y : nez kho *x+cfed*/a9cive point charges

  The electric field shown ini3ft:u5*tmr zw6 0c

  Can electric field linez+wpw,bvt-wi) - :r gqs intersect in free space?

  A solid block of metal in electrm2 /u-vgg9sxh,m * hq2x0kkg nostatic equilibrium is placed in a uniform electric field. Give a statement concerning the el 0kukgm h2xghgmqvx/,9*- s2nectric field in the block's interior.

  If a solid metal spher pztz3zjg;t2z wu(5dh kp1--ne and a hollow metal sphere of equal diameters are each given the swt; 5pnujz -g(k-dz2h1 zt3zpame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform e x;rufkj 000wypa .c*plectric field is directed straight upward. What can be said concx.0kr ayf j*00ppc ;wuerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electritrr6gd+; 5ia sc charge

  A positive point charge is enclosed in a 4e p;pd5gewq(hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field apge(d q4e5p;w t a point directly above the hollow sphere has

State three properti a7 1fy/9p ,ckyl .vhy1njat2xy4l0kqes of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one erra 1f i3iur31ljlg/:lectron 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 hv dy;kq,zj/n3w kv ob9d++(q; evzd/o as a net charge of +2.00 mC. How many more protons than electrons does this pidz/,dkoyd3/wqvoz;e+ vkv9 q;(+j b nece of plastic have?

  What is the charge on 1 fh5t+f r(3:y9m angchkg of protons?

  An atomic nucleus has a char icv0 52tvoedk:+/lqzge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepa*6 4w dwqhy2ubrated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between thed4bhqu 2ww* y6m?

  A 1.0-C charge is 15 m from a second charge, and the force between them is , a)t 8uztk . sxdyqzjf.6b(ppbc+x1;sxuo 8; 1.0 N y,t8qp+uu c b(fxzxk;s8jp1);zso ax t6 .db.. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How farh2i3vc)+rd 7)conhdxk y2q9q7 yh +oh apart are they?

  The force between a /d9g rcxgh f1dqgf+06$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar, d4fauyy120igd4) hnpa+s ls t, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is tlas)h 4id01d yyp2,g+4na f suhe electric force between them?

  Three identical point charges of 2.0 mC are placediyc* ry(gw 96l3c2def 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 fg dycc2 *r e3(w9il6ycm 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 the x-axis. A charge of +cwbkjf s/a, cr81p1+bt9 rh,n 2.0 mC is placed at the origin, -2.0 m C to the right ahc ,k+a, j9w b8/f1bpc1tsr rnt 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 at the origin?

  Three point charges ai ;ys2y 0 pc6g/lq/rks esh/7z2wr: rsre 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 magnitude of 2gyys:q//z/r ri cr7ssw skp;h 0le62the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squ 5nn/mhwv0-qb gjgeq2/(h nx-are, 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 charge2(- qnn0hvw ng mjx5hqbeg-// 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 4 0s6dd dwe05p-md6tobq hyk:(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the need d t46s -qm5pd:0dw0 ykh6bot force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 np4.zl1ei03r j 7w 1hbnb0sl azC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of 7 b0ejr1nbzs4lizwa. 1l3h0 pthe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pl)s-g 4y7 01vt ftebzslaced at the vertices of an equilateral triangle which measures 30 cm on a side. lyv1b0s et)fst74 - zgWhat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated riut.z0:4nkd 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 force acting on it would t: u0knir.dz4be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 mxrq2rl+bf+ j dkx)e) e .ygb21. Where on the x-axis can a third charge be placed so the net force on it is zero? lj2qby+r1g+.frex)dkxb 2)e

  Charge +2q is placed at the origin and charge -q is placed at x = :a x/d 7j:7jb/f)jfnxgbnu4y/n k b i12a. Where can a third positive charge +q be placed so thayfb: g) j/jibd7 u:4fanxx/17b/kjn nt the force on it is zero?

  A copper penny has a sy 7i;hwc omno-jn; m6 p3n37mgql*e8mass 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 gravik njmk::y:*pfa ma;8mty by the attraction of a fixed proton some distance above it. How far above the electron is the proton*yk: :mpma:a n;jf8mk?

  Two 0.20-g metal spheres are hung from a common point by nonconducting t5qdc: 2l)3 rz1v avyjs 4epcli6e*2td hreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart lrild ): d4v*263p yqs5tca2jveze1cuntil the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus hahg p *kook/)2mm3e8 ycs a charge of +40e. What is the magnitude of the electric fiel3*mge) pk/c y8ookh2md at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fx2oly26 ez (uwield at a distance of 1.50 m from a 50.0-nC 6 u2y2wezx(ol charge?

  A 5.0-C charge is 10 m from a small test charge. bwx) ;7axw8) thcxw,qWhat is the magnitude of the electric field at the location of the tet;h)xxwb7, ww8a)x qcst charge?

  A 5.0-C charge is 10 m from a small test charge. Whatljj1h g,y 5.kw dju+*s is the direction of the electri.s,djjuwl5 y*h+ 1jg kc field?

  A 5.0-C charge is 10 m from a small test chargev2 dzs vz7xh03 upc5 hl9qk;1xs h;.tf. What is the magnitude of the force experienced by a 1.0 nC charge plpd ;t;x2sxshc3h 0.zvk 9q 7 1ulz5fvhaced at the location of the test charge?

  Two point charges each have a val5 z/tdy +sal7yue of 3.0 C and are separated by a distance of 4.0 m. Whas yytl+/a75 zdt is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a met-aard)i,k* iy2qbvn6 s ;*vzu er stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cz * *u ,akdyri2nb 6;aqs-viv)m mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charflgfhkvof8.ge* b7); ge is placed at the 50 cm mark. At whavlk8)e of f*hggf;b .7t 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 = 0.20 m. ta+ kf b-mr,j 9wmz;+bvip)e, What is the magnitude of the electric field at v+i j frmb,ep+bka) w9 ,-ztm;the point midway between them?

  Three 3.0 mC charges are at the three corners of a square ofb.,v(otrg r8xkd(k 8c side 0.50 m. The last corner is occupied by a -3.0d(br ,8 xrtv(kcgo. k8 mC charge. 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 the corners 0/pj )ws hi do;q4d64)uvsfo8j 1kvqkof 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 the square'sj) o)ksfq4h/4iw vk8 j6us q1pv0;dod center?

  A force of 10 N acts on a charge of 5.0 mC when it is placedza*) 6siqk gf5 in a uniform electric fie6)a * zqfgk5sild. What is the magnitude of this electric field?

  A particle with a charge 755 pl vr:w1n l3to* col:jveiof 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 o.z biahv,e..w*hb7 r+n9 mrowf 6000 N/C pointing downward. Wh wn..zeo*rr, bbhm.+vwiha9 7 at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g cakfp1( ed-h xrw;8rp :2vnmyp67y x;ihrries a charge of -2.00 nC. The ball is placed inside a uniform electr2 i; r: w-y k8p yeprx;h(71fpnxh6vdmic field, and is 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 +2.0 mC. What is thb.n+ngkd s ;9me magnitude of tg9kns+b;mn .d he electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriesc8f f4rr o cmaee08(dj r5*nc5 a charge of 3.0 mC. What is the electric fielde5j(rcoc4me f frd80n 8cra5* 6.0 cm from the center of the sphere?