State the law of conservatievg7q:xm h 6e9eum 3w6on of electric charge.

  Is it possible for two negative charges to attract each oq+8pv3x c ktwk(u5 ofwg1sp :9ther?

  Is it possible for a positive and az mi7khf lgq.(.mhi4 . negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process thecdps41ghp cqr0+ nv 2. glass rod acquires a positive cha.d4phgs+1c02vrpq c nrge and the silk

  A proton carries a

  The model of the atom 4goi emt86 kf. *h+uohshows a

  A neutral atom always has/.:ma tgsul/ee xuzz 1s60s/f

  An atom has more electrons than protons. Tmt yiz68d6fd-eg0 a*l he atom is

  Materials in which the electrons arelagexc8k3ccv 7r0a .3 bound very tightly to the nuclei are referr0cc 3vl x gke87caar.3ed to as

  Materials in which tk 2sgv,e3jx:q;q jbn) he electrons are bound very loosely to the nuclei and can move about freely within the material are referreqbxg,3jej ;sk qn)v 2:d to as

  A negatively charged rod istpxv i*rdy c be0 6zh-;/h*9dd brought near one end of an uncharged metal bar. The xcrhz-*yd9v6 phd*bi e; t/0dend of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. T u /3rtf24vhdrhey are placed rv3rfu /4dht 2near 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 adrh5 py3/hze*n electroscope positively?

  An originally neutral electroscope is briefly toui- x.uwadf( k0ched with a positively charged glass rod. Tf .w(-dkx i0uahe electroscope

  An originally neutral electroscope is grounded briefly while a posa k:+jqib 9gzj1 q: 6bwzsyr:(fx6+t gitively charged glass rod is held near it. After the glass rod g6tjy9:r(fx:j bkgqz++az b si6 q:1wis removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sep.r1n *x*hbt,miuba +uarate. Then a negative object is brought near the electroscope, but does not touch it. What hapi*.bm, *ah1r +tbuu xnpens to the leaves?

  A large negatively charged object is pl*plwfvelp)5w+i 7*gs aced 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. What is 7*splwil pg+5 v w*f)ethe final charge on each ball?

  Charge is

  What are the units of the Coulomb constaa f;*)px ez;qmnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeb.v0p i ah;wlg4 p.ruz+x+a6v is larger in magnitude than the second charge+lr0 a+a6.hugix.pw 4bpz ; vv.

  Sphere A carries a net charge and sphere B is neutral. ud+- 0xlbvt3pThey are placed near each other on an insulated tablpd0lx3t- bv+u e. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cy78b ,1 vpbbzfharges on both objects are doubled with no cz1,7 p vf8bbybhange in separation, the force between them

  Two charges are separated by 80avs tlhdamb(p *k( p/(x5lxirw ,*z a distance d and exert mutual attractive forces of F on each other. If the charges ahwaakx( l*b/p (tim0 ,r l8vs(*dz xp5re separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eas4dovrp ol.a* f0xg:0 ch other with a force F. What happens to the force between xaf0.or :gv40 l*podsthem 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 force is now equal to

  An electron and a proton are separa n3pp2 4llamk)ted by a distance of 1.0 m. What happens to the magnitude of the force on the proton)3amppkl ln24 if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dixxeze: s04yr (fk.b-)f atwo5 stance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plaska).5xt :for4f we0( beyz-xced next to the proton?

  An electron and a proton are segwnz n-7 di4bcb;; +lhparated by a distance of 1.0 m. What happens to the size of tgb;blnh-wic 4+n;z 7dhe 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 snek* ;pmqv n(t q6 t,y/6mr1y9ckf/msquare. When a second point charge o y/ck6 qt19m mn/,(mykevnp*ts ;qfr6 f -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 fzeuuf 88,hmg-5 5ae ntriangle. When a second charge of +Q is placed at one of the triangle's vertices, an-58 8nu5g uaf efh,mze 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 of +Q placed at one of the other vertices?

  Which of the following is not aihu1 scp1q r)/z/72b( p l,debkqrp3 b vector?

  At twice the distance from a point charge, the strength of the electr ibm*vgixu0+( yn xikc469h +bic field

  Is it possible to have a z2so2+:tyqx ypg gx ky)w6 w7:oero electric field value between a negative and positive charge along the lig) 6ty2x yo wysp7k: gwx2+o:qne joining the two charges?

  Is it possible to have a zero /bi tk1eahnt ,, tak.ku +)-lwelectric field value between two positive charges along the ,/au1 ab knktwhe+lt kt,)i-.line joining the two charges?

  Electric field lines near psitive point :sz 8dhralke44x w(j uh4/pk2 charges

  The electric field shown -jfpnwc4gcg l t59rj9cmhtx4,l koe,8)9hq +

  Can electric field lines intersect in free spac l/aoy mb6x rpa8q0 *4sqyk;4me?

  A solid block of metal in electr jr(x4;f psa9bx:i 4tz vb*lt/ostatic equilibrium is placed in a uniform electaf:;b ts pi jz(r*9vxxlbt/44ric field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eqotwmy;ca.l q f38qec/.+vly4ef .;n cual diameters are each given the same charge, the electric field (E) midway between the center tcc;vcmf;f.q.+ lon.yl/4ye3q a8w e and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifnegcbpn) dt (h(s;,pfqzai k t; / 9**z(7vituorm electric field is directed straight upward. What can be said conpctqttna(g,;9/f; )nzdb*epi (khisv* uz 7(cerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric n xgt*23u4- *zb ,casgvkhc7ycharge

  A positive point cha; r3d0wj)m4ji/b evegrge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere wj4vd0 )i/r j;3emgeb, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equiliz7x9fst8i ::d szwhn .y,m ab;brium.

State Gauss's law.

  The charge carried by obilin-v 7sbk8 cph95g (1knu4ne 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 of +2.00 mC. How many ou j, s(4iyapjxu+-b9more protons than electrons does this piece p 9 (u+ijosj-u,ybxa4 of plastic have?

  What is the charge on 1 kg of propojfz)* r2 l/rtons?

  An atomic nucleus has a charge o; 7c/ yuekyz3xhr-g l+bg51xcf $+40e$. 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 -4.0 magj wf0p/ ohlgika 6 n(4v*h.4C, respectively. What is the magnitude of the electric hia0o.j* 44gng 6l(kpw/afhv force between them?

  A 1.0-C charge is 15 m from a second charge, and the0x2a 8zi97h shlvf/uoef86 2mj,oony force between them is 1.0 N. What is the magnitude of the second chz,iox9f6lyf o/0uhhs 7e anovm 828j2arge?

  Two 1.0-C charges have a force between them obtlh5 wdu3 ./rp y/hf(f 1.0 N. How far apart are they?

  The force between a zzi9 hi8 p.n) (j4szqbjmu4w/ o56s ms$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienx84ow-k/er+zc pj 8 q(ok i*ilce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force beikpoi/4 lrw+ q8*(o8k ejxcz-tween them?

  Three identical point charges of 2.0 mC are placed on;+u*la t ja;bpf0 pbe0 the x-axis. The first charge is at the origin, the se0tpep;; aj flu0a b*b+cond 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 os 1wgzcpp ;1:rn the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C tgp:1;pc1s zw ro 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 positions/j7 k id)b0pl fk my52ebs*8vl: 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 the forc27sbepm k vyf/d*bilk0lj8 5)e on the 3.00-mC charge?

  A point charge of +Q is 72jt:z0pe b 0kyzfm2eplaced at the center of a square, and a second point charge of -Q 27zpmy00e2:fj tzbe kis 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 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); Q3o10t4 udlycqxq14av(c.csv4u k6a x, = 5.0 nC is at (0, 0). What is the magnitude of the net force on0ctklu16q ,x s a4.ydx uc(o41vq4c va the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC *gzs k0 g7.ulfis at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). zufk. sg *7l0g What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0s* vrqoi)d.-w mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. Wha-dvirsw).o q*t 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 by 3.0 m. d(dw ctztfh,0/e60rt n9d ka3 At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fo0te thd tr0 c/dkzwd,n3(69 farce acting on it would be zero?

  A +3.0-C charge is at the origij2b8xc, rzxxc z02 ve*n and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed soz2zjxxe bv crc,02x8* the net force on it is zero?

  Charge +2q is placed at the origin and char25cesnd a): t5mre0rf ge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on i er5t:520)a d mrncesft is zero?

  A copper penny has a mass-ff t49 76fi f7,bv l97fxg5oqpoydrh 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 brfn+qp 2 2sy2jf(69z3j drskagainst the force of gravity by the attraction of a fixed proton some distance above fq+ kzj3jrn 62pds2 b(fr2sy9it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point bykg:m yp uv0-o, nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is uk:0m ,g y-ovp$20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is-*a(emeb t*mll8 l7jv the magnitude of the electric fiel7j (me8m*e vllbl-t *ad at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5*4we-f qzy iv(0 m from a 50.0-nC cha4ewivz*(yq- f rge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ex (yfs7,g6.bgq wzfr : *+oioelectric field at the location of7b q(zro ys+ggfi:f6x,o* .ew the test charge?

  A 5.0-C charge is 10 m iad 84it:nq 66v y9lemfrom a small test charge. What is the direction of the electric 46:mn aiv68qtiye dl9field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitumbz w6 ,5lz- t80kbftude of the force experienced by a 1.0 t w 60tzmlkbb-zf8, 5unC charge placed at the location of the test charge?

  Two point charges each have a valuslmy l )1ywu+5e of 3.0 C and are separated by a distance of 4.0 + 5w1yysl)um lm. What 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 meter sticgyrp5 8-quo;v+fjxf , k and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field aqur xfp; v o5y,g-8+jft the 30 cm mark?

  A 5.0-mC charge is placed at the 0:n4hvzoi)j)w5z 6 owg cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joini g5w) o)vhj4 :ozwz6inng the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are 0co )5:lu)2(rltke2asbv gh lplaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between gs)lll(ba5v2:r u)0 ochke 2 tthem?

  Three 3.0 mC charges are at the three corners of a square of side w n41eua03ypz 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eleca01z34up wn yetric field at the center of the square.

  Consider a square whichjr fhdu.z;e :/f sp;,x is 1.0 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 fieldu pd./,xsz;ffe:jhr ; at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placejvrs:8sp/bl ls 91w. td in a uniform electric field. What is the magnitude j:8v /rbl tps19 wsl.sof this electric field?

  A particle with a charge of 4.0 mC has2y;ov01*u b jfg(o efh 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( kwrq2 g(,7z gfjj*gzomu1 *p placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendemzrp 2g zog*f7kuq1*(w ,gj(jd?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pl.eac2dizo; r u)ct7 f.aced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of tirt7oc 2z.a.d; )ec fuhe electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 m4ljyo0iu y0 zfm(74cdC. What is the magnitude of the electric field 5.0 cm from the 044 zolcy0u f7(idmj ysphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elpxcqa- :o1v)ikqi aa6t.-n9xectric field 6.0 cm from the centqqcp-9 akxovxa-a: it.)n i16er of the sphere?