State the law of conservation of electric chaz(y80rad6i dyvz3 m u:rge.

  Is it possible for two negative cha,-i+y 32j 0m(hnkn os mdn1vqarges to attract each other?

  Is it possible for a positive and a negative charge to attract each v*vs 7:a *av*0 xmw1jvjzzim 2other?

  A glass rod is rubbed with a piece of silk. During the process the gu8ltq (v+a8ohp*k lj 4z j*qr8lass rod acquirkv(*l+otpz8 * qrh8ju l4 jq8aes a positive charge and the silk

  A proton carries a

  The model of the atoz0-qh-yqxjyw*ix 2 v-r ,fd 5fm shows a

  A neutral atom alwayp u x15xj ;r:*ihhg4odr0:bhj s has

  An atom has more electrons than protons. The atom q d8f,4tit.ab4v)gm*npcgbs7fh)i 0 is

  Materials in which th0/, ho yysvb6gs 1l,:yu ukfc-e electrons are bound very tightly to the nuclei are referre-usy,shok ,cgybf:v0ul 1 y6/d to as

  Materials in which the elecwj3h r6:7c; 7 ne yw,w-mxi .0ddyvyyutrons are bound very loosely to the nuclei and can move about freely within the material are referred to asiw-c, m7xn hdryvyj 3.dye70 :ywu ;w6

  A negatively charged rod is brought ne 2psy7hh4kui 9ar one end of an uncharged metal bar. The end of the metal bar farthest from t 2ysu khp49h7ihe charged rod will be charged

  Sphere A carries a net positive charg o/fyqn2z0r d2e, and sphere B is neutral. They are placed near each other on an insulated tabl0 d/2froqy2zne. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge aa( cnwn*c n ua8ks;+e+a7mzq 5n electroscope positively?

  An originally neutral electroscope is briefly to+y3xo5nhr )vn cs82 nsuched with a positively charged glass rod. The electroscoh2c ) y nnsn3v8r+s5xope

  An originally neutral electroscope is groz+fhjjy i.7 *nunded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosfhzjj. y*i 7n+cope

  A positive object touches a neutral electroscope, and the leaves separate. Th-ry8c(:o qnv)aw 3guxflsp 8/l 71mx oen a negative object is brought near the/s -8nxrupwa f3) x:yg(8co1 lo7 qvml electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabl1jl (rs cc(wwkp9u++le. A neutral metallic ball rolls straight towardc(p1w c wju9++k l(rsl 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 each ball?

  Charge is

  What are the units of the2 io +wncn 6*z./epkje Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by6 und:i dluzyx9v ,9b0 a distance d. The first charge is larger in magnitude than the second charglu 96 i 9yx:zd,vudb0ne.

  Sphere A carries a net charge and sphere B is2jpb p r55ff4j neutral. They are placed near each4ff 5pp2jj5b r other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force68z8g o8le mbl. If the charges on both objects a8 8zbem68lg lore doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces/w( 7fgw7nmss of F on each77 ns/gms wwf( other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forc3vw 5i fekaz79e between them if one charge is doubled, the other charge is tripled, and the separation distance between their cene 3fz7wav5ki9 ters 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.wp k4,1g7gp3z1 dnnp z What happens to the magnitude of the force on the proton if a sec41p g,g z ndwknpzp713ond electron is placed next to the first electron?

  An electron and a proton 5mes( qx +tiwo3) ase2are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elects )+t3q2ao5s(eixw m eron is placed next to the proton?

  An electron and a proton are sepa,uv+8mslblbne 4 j:rl7 b0eb*rated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to theb l*0, nes:ub+vj8mlblr 7 eb4 proton?

  A point charge of +Q is placed at the g9rlrg92sx 2q center of a square. When a second point charg lq2g r299sxrge 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 equilateral)xz8l,p/ wd,wpxc - hb 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. Whatdw,wphpcxlzb, x-/8 ) 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 notah7ygdah +j*7kw8 9 mx a vector?

  At twice the distance f2/x os i7akiv3,v5mds;v ,;l9 qahldd rom a point charge, the strength of the electric field

  Is it possible to have a zero electric fielw35 a;ql*0a( k yz2teyt6ga ndd value between a negative and positive charge along a25* 6(gtw eytkdaza0;y 3qnl the line joining the two charges?

  Is it possible to have a zero g*qb6r. 6m tsjdu)- fxelectric field value between two positive charges along the line joining ths r-q)6*6jxm.bfd gute two charges?

  Electric field lines near psitive point zyw+p*bcd x51 charges

  The electric field shou (2+v/nlxbsym 3;mx lwn

  Can electric field lines i1wqox+tsr5hd cw9m3 4 ntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifo9n3irc q fm54u8 btoa9 psl(girpz0u;9z,g6arm electric field. Give a statement concerning the electric fir(3fu;iczm0rnlt 54 6z pagq,ub9a9iog9 8pseld in the block's interior.

  If a solid metal sphere av d,p89l bub91b34ta+qrjyops mjb32nd a hollow metal sphere of equal diameters are each given the same charge,bp+bvrp bl83td 2b1,99mqsa 3 o4jjuy the electric field (E) midway between the center and the surface is

  A cubic block of aluminusg0cjw/1cq(ok 3 xch b7g5xq/m rests on a wooden table in a region where a uniform electric field is directed straight upward j(hcq gxcg 3x/1cbq0/s5 wko7. What can be said concerning the charge on the block's top surface?

  If a conductor is ing47 1.owdbq(db0 vf4+vaiml y electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic srk-uhx,d)ek z : ka,n1phere that is grounded. As compared to the case without the hollow sphere, the electn k1 -uadk:rk zh,xe,)ric field at a point directly above the hollow sphere has

State three properties of conductors in static etl/x;a9pm(rgz(*m;h1mk t qdquilibrium.

State Gauss's law.

  The charge carried by one electronkxpws .wc.g:og i*54: ,vvgk u 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 cham7xuqs t131mn6k fix7rge of +2.00 mC. How many more protons than electrons does this piece of plast1f3q txn1iusk76 mm x7ic have?

  What is the charge on 1 kg of protonsvua :r*c l10vdrl h5zp36ozj,?

  An atomic nucleus has a cha0 jo0fb egdv- -eh06(2yz da(qknp:tqrge 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 charge values of 2.0 an2e/;g3lgeeirn bq *h)d -4.0 mC, resp hibggnr3 *q2/)e; eelectively. 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 is 1 8e/s+kltoz,) koqwfx7j., oq .0 N. What is the ma/w xokqelsz q,7of), k+.j8 tognitude of the second charge?

  Two 1.0-C charges have a force betw rfvs3u0.d,g :-nk t-l q(eucteen them of 1.0 N. How far apart are they?

  The force between a ow g;v192wosfqva1m ($30 \; mC$ 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 force. If theahmml+3b8r ;et3x3zke u hh4 +y are mohx4ht +m3z83ebe;lk ua+ r h3mved to 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. The first ca qs 0wch6j*;n)/6 fhusdb wh8harge is at the origin, the second to the right at x = 50 cm, and the third is at t)*s86 ;jwwhunas/0cf b hd6qhhe 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 the efj5ujm3x0 ,s 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 m,ej3x0s5 jum fC 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 locateob5*bzl76af*n w.)ozwic zo 8d at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC6zwoo*fb)iz*wzl87cn b5 o a. 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 placecr w.y bx1k/ .sqbdz5l w*;+; tzcipxz 8kzc*9d 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 thidb9kq *s/ 5rx8 z bp* x.zzkct+.y;c ;zclww1e 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 = -1.4(osy+gd/ac la) jnc)f 539ku m- djld0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the macln) aldumjj 3gdy 5fk- saod)4(/ 9c+gnitude 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 = 5.0 nC is -3j7vdyxj jbhj n8t25at (0, 0). What is 2jjnj -x8tvjbd3 5y 7hthe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are xx8b-kpz .so )placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic for.)8b zxk opxs-ce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whiclw6j0d8n,owjlg; x4y h ez6s6h 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 znhl,yww6 8;s6x dle6o j40gj-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 42vov)0f e w/l:dmkm 3kdhs,gx = 4.0 m. Where on the x-axis can a third charge be placed so the net fowk,mf4v 3khg d e:2 )dms/0vlorce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x 2jmtg bb/qt4uw3rvrd/(q;9p = 2a. Where can a thirg 4 pbv t t;uwm9/2jbqr3(rd/qd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A k5k31k- vch ux +oay4jyx)iz7 s)t2eitotal 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 gr. hd 0ret-gg/mavity by the attraction of a fixed proton some distance above itr.t0g-gme/dh . How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point 4 wp2+iblkf.a p :v+lsby nonconducting threads which are 30 cpfsvpw al42k+ li.b+:m 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 a charge of +40e. W 4wj:x (fwk1eyhat is the magnitude of the electric field at a distance ofw 1jfex(yk:4w 1.0 m from the nucleus?

  What are the magnitude and direction of thebd hl)ko2rs-rpr )i(3 electric field at a distance of 1.50 m from a 50.0-nC chargord i2- b3prsh)r)(lke?

  A 5.0-C charge is 10 m fromjlgw c:yg2 ,yjj.. oq+ a small test charge. What is the magnitude of the electric field at the location of the tqg:w y,oj2.lg+yc.jjest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of .t3 osn2ee hd4the electric fielt23see .4onhdd?

  A 5.0-C charge is 10 m from a small test charge. What is the magnim6 ;:s;fq-xoh-mf c2jyucn/ itude of the force experienced by a 1.0 nC charge placed af:6-j ymh ;mqc nu/-i;cf2osxt the location of the test charge?

  Two point charges each have a value ouz. / (fe62 qmg mt-)nkx.ctxjf 3.0 C and are separated by a distance of 4.0 m. What is the elek qxn.)-e/ut.ftc6 g xmzj 2(mctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a qnm33)k7,wmttsmo z l0f/x-n meter stick and a -4.0 mC charge is placed at ozn)0-sk3 m x t/m,lmq3twn f7the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a methj a5y2:i9pdc6c /+o weu+(ui (qvcdoer stick and a -4.0 mC charge is placed at the 50 cm ma(2 joh5udc/c i6:(vqpuadyw i+oe9c+rk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of mvln77d(dhd4,m ocs* +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fidv hm(7 nd7d4mso, *lceld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of s.cd;q6lrf .tu ide 0.50 m. The last cor uc.ql.;ftr 6dner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which 3k8qpj9wru/t6* ij h sis 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (jj/8q u3ki*w 9p6shr t0, 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 oek0 h*um rq4nfiexg(3. k9tv 2f 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric field?h.0kx gqmv4ee f uknrt9i*( 23

  A particle with a charge of q*s: , be6ex88sopgc8 gaaz g: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 3fq 7ef+au1u (jgd )zofield of 6000 N/C pointing downward. What charge must be placed on the ball for it+f1juo 3efu7 gz d)(qa to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. r;p izkn ).twsam;:d-: uqg9 tv-znt+ The ball is placed inside a uniform electric field, and is sussn +gz-dwuqa ;zp vnt- :r)t.9;imk:t pended 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 m9*tfi08-btcod xyj0 fq y7n+aC. What is the magnitu7abfn-x iy9*q 00 t dcftyo8j+de of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eia26u5 +ygwr41ne+v gx y.c2bc m (abblectric field 64w2( 2g i+v5cx gyb.re1mau6b+bynca.0 cm from the center of the sphere?