State the law of conservation of eiw;4eputa64 6jqk6sd lectric charge.

  Is it possible for tgcifj/mgp,mxm pup f5-(n 7-. wo negative charges to attract each other?

  Is it possible for a positiveu *l 8lzwiu(0p and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During 6.1zl 4f dosb1fmtf 3dthe process the glass rod acquirm6fof14d bd .z 31tsfles a positive charge and the silk

  A proton carries a

  The model of the atom pepvp1z3 *. tsshows a

  A neutral atom always nlsyp y0p9p 6p l*:0*i onir1thas

  An atom has more electrons than protons. The ato 57p+ .i8k asnbm3bylum is

  Materials in which the electrons are bound very tightly to the nuclei are ref+ 8d*vk64 b siyrrr4lberred to avy8b ikbd r4l4s6 *+rrs

  Materials in which the electrons are bound very loosely to the nuclei48l.9 ht3bswbdsa*f a:ygou 6 and can move about freely within the m4*sl: 9o aa6fst.gh ydbuwb38aterial are referred to as

  A negatively charged rod is brought near one end of an urajz9 f5h/;ymncharged metal bar. The end of the metal bar farthest from the charge;f/95ar mhyzjd rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placeu,u3 kyzf+y7d0) y bhld nearb+3f7uk )u0y dyzh,ly each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivg(z j8mm wed:(ely?

  An originally neutral electroscope is briefly touched wenoau74 : b3. gl8evwjith a positively charged glass rod. The electr:gve738 .4aloejnu w boscope

  An originally neutral electroscope is gr9n en1;zh welu.68 jglounded briefly while a positively charged glass rod is held near it. After the glaslwlujghe;e1z .9n6n 8 s rod is removed, the electroscope

  A positive object touches a neutral electroscope, q4phn2r2 hi8 yqxgdu68v05rc and the leaves separate. Then a nega pd8i5g2nc62xvu rr y08hhqq4 tive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral8g/j * s9cy4go)p gbpyyi/v *pzj)0yt 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. Wha9sgc)yyyg)/vz*jb 0iptpyg jo8*4 /pt is the final charge on each ball?

  Charge is

  What are the units of the jyfj6 u( n98b6u.aimjCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a 6:ntwsrq8,ro distance d. The first charge is larger in ma6r8tqos:rn,w gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e v4+ s;/ngldgtach other on an insulated table. Which statement best+/gsv; d4tgl n describes the electrostatic force between them?

  Two charged objects att 6dqtwo m)2n4lract each other with a certain force. If the charges on both ob62 to mwnqd4)ljects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attr6yua r/le s::xactive forces of F on each other. Ifyl/:6u resx: a the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forc hmf:ong+cdg 7r-zy 1)e F. What happens to the force between them if one charge is doubled, the other charge is tn -d)gm: hz+cy7r1 ogfripled, 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. What happens to bi z5lzg1gc-ii66*-jltmapsaz 7e1 * the magnitude of the force on the proton ita 1eblzs jp1zim6g*i-c7g6*5 z ai-lf a second electron is placed next to the first electron?

  An electron and a proton are sewu y2ua*g/e6dfw /qtv2/ iaw6parated by a distance of 1.0 m. What happens to the magnitude of the force on the/ v 2f w*6 t/weu2yu6qaw/gdia 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. Whu ;4tqjo cu7.kdpwdp2y:q t, (at happens to the size of the force on the proton if the electron is moved 0.50 m closer to the p,pk:p (dwdu o cqu.qy42;tt7j roton?

  A point charge of +Q is placed at the center of a square. When a se8j( c-wv/bihs h28odwt tyz3 8cond point charge of -Q is placed at one of the square's corners, it is otyb s2 8ww/-8(3hho8id jzvc tbserved 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 z.e+l7 5ydnfz;x( y anplaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an elecdz y n;(xyl f75+enaz.trostatic 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 of +Q placed at one of the other vertices?

  Which of the followi;, s6 k.2 zcatufnl*gxng is not a vector?

  At twice the distance from a point chargtmq eugr61w n 2igw67z(ku, u4e, the strength of the electric field

  Is it possible to have a zeul cpy e +yshyi6,)9,cro electric field value between a negative and positive charge alo sy cy)6c,yhu+ple,9ing the line joining the two charges?

  Is it possible to have a zero electric field value between two posq,4kpv4 pqlnhft+5 e;itive charges along the line joining the two 5+e,f;npv4tpqkl4hq charges?

  Electric field lines near psitive )b*xyq+ew +yzpoint charges

  The electric field sh;in )e5b q8ljsown

  Can electric field lines inte. ry 0dh* 9wvu5bkijs-2 icfaz )y)nf7rsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elec:iy:+xt ts.azidb+ .4:hw q hwtric field. Giveqxsywa + :+hz.:w h.4ti b:dit a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphev0+5ns+ 5e zfsoc 8n*nh 3c1;ii2qvew . bgqwhre of equal diameters are each given the same charge, the elec+ 3 0bseq8s.hnq;ncvgh12w 5 ez+n*iiocf5wv tric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where6.yatigm+etyt ,o,t, 7) y xar a uniform electric field is directed straiggi ,o.tmay yt,y7+6at ,)xretht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charg s ( 3z3/exw7ch1iotmge

  A positive point chaks0h*fdgbbee( k.4p o*3(ur vrge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above(4bs 0kefh gkbuv3re* o.p* (d the hollow sphere has

State three properties of condhc5 y +auq9ozdqh; 2ddh:)d c,uctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ifw5x6l u*h 0ju) ;d5p hzw)nvhs $e = -1.6 \times 10^{-19} \; C$. 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 t i8o02o e 0p jw1e o6vhe2sr1f9zotm6more protons than electrons does this piecowmfp2te8r1ozeio0 02vj th66s 1oe 9e of plastic have?

  What is the charge on 1 kg of protc,. itoe a/ts-ons?

  An atomic nucleus has a cg: 9yoth4dn+ by zmz9-:f: aswharge 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 and xl4,gdl 53p;2 kh9p -wufgm ji-4.0 mC, respectively. What is the magnitude of thexgdg mlh5,9; l2ufw3ip -p k4j electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1ozw7-cbxn5fz/ f8 (mi.0 N. What is the magnit5fx z/mnwfi8-z(7co bude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thxhvn6lz2l3 w*ikf fa tl5(r .8ey?

  The force between a y4cs v-hxxy ,m80-qaf3lve+o a4 wnr5 $30 \; mC$ 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 ta luc5gbg8fujn-)i b4v0j zbv70o40yv lpw9-hey are moved to a new separation of 8.0 cm, what is the electric force betwe 5z80- y4wb0l9 lfi7gua-ojcvb0nj4pg uvb) ven them?

  Three identical point charges of 2.0 mC are placed xv.ok05elv ,k 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 cm mark. What are the magnitude and direction of the electrostatic force which acts ,v k.0lkvex5o on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0ry pd/cz ;z,fqxmb xp+ /9w6d( mC is placed at the origin, /qfy xm rz9bp+c6 (;zxdd w/p,-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 at the origin?

  Three point charges are located at the following positionge2 f;0prbxou m-5j;fvwaq 07qo *9a ls: 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 mwl rqa9 v*qgjm-00exfo7p ofb2a;5;uagnitude of the force on the 3.00-mC charge?

  A point charge of +Q is p n6(*6 8.hobhe cj(g p(wdbegplaced 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*( bch j ehwpd.n((6bpo eg8g6 on the positive charge at the center. What 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 m); Q3 = 5.0 nC 3q,c4 ,uvx e+h z7rpura u tnk8pl:jv/x8i:8bis at (0, 0). What is the magnitude of the net force on the 5.0 nC chqp8lr,84v/,3 raepb vu+x ti7n:k8:z xu jucharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 n9dzjk.k e-rp zrfz(i)u j977k C is at (0, 0). What is the fd-er7 k9z. z)i(pjujzkr9 k7 direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertg nonr3,40dgl ices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the c,gl0nd3 rno4gharges?

  Consider point charges of vk9y k;j0of2o+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible 0jyv ;29fokok 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 jfb: a e;jqvr1bk, je) .zig48*iwqv6 qs z:2norigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed sor; qvj*b,2:6bi81ejkn : a4 gfsv qzqej )z.wi the net force on it is zero?

  Charge +2q is placed at the oi87t5lnhs 2q:qfv v5jrigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thaqv t5is5n:8 vj7hqfl2 t the force on it is zero?

  A copper penny has a mass obyev/ n9hseh /:)akw6f 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 by the attract :3:sp-b puot7e zohv.ion of a fixed proton sp3bop vzets u-:ho.7:ome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a coxh toj9;4jnp9vzfk 2pj 6+6ktr: bmn; mmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thth 4on: 6v; x;92m rjpknzj+6kpbf9jte 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 magnitumz 1w 9otf2.bhde of the electric field at a distance of 1.0 m from the nu. 21hfm 9btwozcleus?

  What are the magnitude and direction of the elecr s 1yh*jckqjiiyq+0 p r8t,7.: 8.lhofy oh/vtric field at a distance of 1.50 m from a 50.0-nC charge?j8f :kql.h rrsic8jhyt*v/p+o,1 7q y.iohy 0

  A 5.0-C charge is 10 m from a small tdrk:d+x -gq55h vk 9yfest charge. What is the magnitude of the electric field at the location o:d-v5d kxrkfh 5q9+ygf the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th:m j z1yajuri)u3ff67clf 2/de electric /y 6zf1 2m:fcdau7lr3 jjiu)ffield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the+60etfm n*)ccaq; 2goky iw.k force experienced by a 1.0 nC charge placed at the location of thea +*yk.gc2iwno0 6mec;fk) q t test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance;lka*p4jrw :d of 4.0 m. What is the electric field at a point midway between twkdj;4 *pa l:rhe two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a met(c748a/qjp usp, lihq er stick and a -4.0 mC charge is placed at the 50 cm markqsqc hp,(pa/l7i4ju 8. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marzxg;-u ; 4e+0xck2u;wdi gxrzk of a meter stick and a -4.0 mC charge is plaw +duez;gciz2-gx 4;0xu krx ;ced at the 50 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 x = 0 and x = 0.20 m. j *)bs*g obn5i What is the magnitude of the)5igj bn s*o*b electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squar,ko8 r wg pboxpfwc9 ,253hib2e of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fpwx8b2pwkb orohg52f,,3c i9 ield at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at tl unhclm0 p6;wcm7(s. he 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). pn w (hm l6.;7cm0luscWhat is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a ,pyz6o:; ypt tcharge of 5.0 mC when it is placed in a uniform electric fiet:zpoy; t,p6 yld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC haszdaeto+,6. rjevwv;*u; zx 6c 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 odu/kbty )r3w)f 6000 N/C pointing downward. What charge must be pl )kdytbuw 3r/)aced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charqyas5o/54 *i:luhpbx ge of -2.00 nC. The ball is placed inshu* pxbql5a4/ys i: o5ide a uniform electric 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 o 7*lmyog w0tvoc8a d i7()ei adf7to-jz4 3mi9f +2.0 mC. What is the magnitude of the electric fiel3f0o(7d7a t lmji4aiec w8* gzo-v7 mto iy9d)d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What i *.k h2onjisgkk8o cn 4-*a;:ol/tsbps the electric field 6.0 cm from the center of the spherek4;aoljiknhcso* nbk-s/p:2 g *t.o8?