State the law of conservation of eyg8r)7hi f3 pblectric charge.

  Is it possible for two negative charges to attract each op1 wymxwyip;v+d(t 32iyym +2ther?

  Is it possible for a positive and a negative charge to attract each otipx2 e7bm2/oe her?

  A glass rod is rubbed wio db xh)2b :qj8bjf-i0;1g l va-nf4nsth a piece of silk. During the process the glass rod acquires a positive charge and the sil:q4anx8jbf2 l j1dvif)h -ns; b-b0g ok

  A proton carries a

  The model of the atom shows /f2 zt;+zjprd a

  A neutral atom always he,chw (1ftxmci4t3 eq k5fp:+as

  An atom has more electrons than -q;*uylzi x w*protons. The atom is

  Materials in which the electrku +y*-lymb3dd820-7 qn jedswo 4abdons are bound very tightly to the nuclei are referre jq-4l3e0yad+do*d bk28wb7n dy-ums d to as

  Materials in which the electroay4pu djlqtpe:45q.,bu2, w igprj1 5ns are bound very loosely to the nuclei and can move about freely within :p,jpla, d5qt.u4qpbigru5e 2 j14wythe material are referred to as

  A negatively charged rod is broughwea c0qlbu 1 l-9su0/jt near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rl1 b9w0qj /cau0use -lod will be charged

  Sphere A carries a net positive charge, and spherei7zt x8zb ;bx;* o3yjb B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with obbbx xz *8z 37;;jiyta wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pmlm 0(x 1 ifkz966hotjositively?

  An originally neutral electroscope is brieflyar a)f *((iq w08w/biksu9zep touched with a positively charged glass rod. iwa/i ) (( b* u9qr8k0feszwpaThe electroscope

  An originally neutral electroscope is grounded briefly while + *3d:w: .9ebcy scuwbquhk3e a positively charged glass rod is held near it. After the glass rod*hd:yq3e:9u. wue c 3bb+ wsck is removed, the electroscope

  A positive object toucheslg2 .9 f8ijkwd 5ayikc5oh 68p a neutral electroscope, and the leaves separate. Then a negative object is brought d6f5c98g j5a okpiik8.l2wyhnear the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table.v :9kszoanj +6 A neutral metallic ball rolls straight toward the object, 6+:svazno jk9but 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 ofu gecq4g/uj q8ky3b8jl89 xbti 28,lg the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanka -5tz5af z1wce d. The first charge is larger in magnitude than ta5 kwfza 1z5t-he second charge.

  Sphere A carries a net charge an q/c2cu:.ey4hf*fp qq fopwj y+t7j 28d sphere B is neutral. They are placed near each other on an insulated table. Whe+*c: .q hp tu2fyo qw7fjq 42/fjcp8yich statement best describes the electrostatic force between them?

  Two charged objects avd14xg gy*+:1v iybeattract each other with a certain force. If the charges on both objects are doubled wvyx1:vb gy4a gd+1i*eith no change in separation, the force between them

  Two charges are separa eidj 1k,ret y:p9z/y,ted by a distance d and exert mutual attractive forces of F on dzr9:e1/ ,ekyi jpy,t each 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 forc1+ aydq,roa0twin8 4xe F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its origina8iox+ta1q dar ,y0wn4l value? The force is now equal to

  An electron and a proton are sepa4t, zdyt :mn+gd3 c53unxh3parated 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 thucnmt 4 d:3dz3,t3agx ypn+5o the first electron?

  An electron and a proton are separated by a distance of 1.0 t9e l8 rvb.fes ni//2em. What happens to the magnitude of the force on the first electron if a second electron is pl2.lseb e /e8nv/i9t fraced next to the proton?

  An electron and a proton are separated by a distancehfnyd ktyi98:03e t4 d of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m :3d f9htdk e iyt480nycloser to the proton?

  A point charge of +Q is pw xazp-5x5(v:xbjb(fkmi g 17laced at the center of a square. 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's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of thejxv-gwb:bxk5 (impa1zx(7 5 f 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 triangle. y ;gyeb-*f -7w +kimiz 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 of +Q placedi -yzmkb*7;-+ feygwi at one of the other vertices?

  Which of the following is not a vector j:cpioyk k c/c;0z/y0tq6t l;?

  At twice the distance from a point charge, the strength of the ele 4ih +lfgsv)+lctric field

  Is it possible to have a zero electric field value between a negatn:u5 a,b)gkp:uqhz: hive and positive charge alongbngaqk: zu )5 :ph,:uh the line joining the two charges?

  Is it possible to have a zero //c zf,0 hofctelectric field value between two positive charges alo0tofc,/zh c/ fng the line joining the two charges?

  Electric field lines n3s nh/ 3gmhqmyn /fkm(+y*v6year psitive point charges

  The electric field shog)6rnxv yx hm1u;3k4r4y. m qown

  Can electric field lines i eaka *e87m ;phne;ff*ntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unikw1 tg.c-:,t 9pc7 l;itwzj pbform electric field. . w1:k9t7bwtp -g;cp,jcizlt Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachh zpse7g62;zyc v*,f*mhd/ yl iewe1 1 given the same charge, 27gyemfz6c*l s zw/hd;1, ypee1hiv*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 el1tfupg2+ u;8 ns 5oxjsectric field is directed straight upward. What can be said concerning the charge on the blo u8+osgsp 5 ju2fxt1n;ck's top surface?

  If a conductor is in elect5i/fn.g2ee 2vryxhl )rostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that iszz6as qiellj1d. 1, 4 8e*eyxncf5b0v grounded. As compared to the case without the h* j46vdlza1n 5eq fe 1zc,ixb8 sly.0eollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stam/r/,u pnbg+ gu3:ydu v *cd5ltic equilibrium.

State Gauss's law.

  The charge carried by one elec kh.r9hmmnme kn.toh mx6*;.+a3 ur q1tron 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 mor hw(/f .h(h2 bnx-do.xor7dyn e protons than electrons does t.7orx n (f n h(2xwbd/.h-hoydhis piece of plastic have?

  What is the charge on 1 kg of protoxd5 dxmkg 99r9ns?

  An atomic nucleus has a chargeg9zbv;pk- qa8tino (u 1pa9d1 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 -4.0 mCch 2 v n2lqlnyzua*aw2/*;d7c , respectively. What is the magnitude of the electric force between qc2h/lu2n*la2z;7a* n cywvdthem?

  A 1.0-C charge is 15 m from a second charge, and the force between themhr /y ;e9pc3,qppg5al is 1.0 N,c5ep9qay h g;pp lr3/. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 l5lrq l (9wj/cN. How far apart are they?

  The force between a )wla,,elruh rve5y 14 c5yj ,h$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.05 mnihop 3n +97drxx5d cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what i n3p5 9xmon7 d5x+ridhs the electric force between them?

  Three identical point charges of 2.0 cqk0,b bip3m nv9d * 3n0bd:ldmC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 qmnbki0l d:09 3bcv*3bpddn,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 on the x-axis. A charge of +2.0 mC 0sbizgrip/m :k7b:0c8 q4ezrn. o3 ekis 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 magn0e.n rgqkz :k c04b8oe/rs3mz7pbii:itude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mucsdviv)s /n(-pjd ) 3C at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00sdij-)uv3/d)( vpcsn m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q i j.w:b7 t3ph:gdcl-i hs placed 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 electhli-3phtbg d7c.wj : :rostatic 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); Q3 d09g utc xo7 n-pieg+(ra4hu: = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5gg 7h aui 9ope:u4+ndx(tc0-r .0 nC charge?

  Q1 = 6.0 nC is at (0.30 xtl3 peof /q,fx:(i9 l5 x-zwc:bxbc8 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dir e-xp598b x:fxxlw,b t /q(lczci3:f oection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterg7*b g hbotcd,g,o* z6al triangle which measugb** b,o6, tc7hdzgogres 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges5)nwzh5 u j8wj of +Q and +4Q, 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 force acting on it would beu) 5hw8wj5znj zero?

  A +3.0-C charge is at the oriv2*a) d+ p-ubly4avily(x2w ;gwu j; ggin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis ca+2 j2ip;a4bvlv);-yu ywglg w(ux*d an a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origu85rt-w j2 *r+gm ccjvin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zerov c5rm-tjw+r2u gc*8j ?

  A copper penny has a mass of 3.0 g. A total 88/jv obqm( ybev)x 8wof $4.0 \times 10^{12} \; electrons$ 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 fj 4/uplku*tiexyn -- ,orce of gravity by the attraction of a fixed protonj-4ue/ ni*ytu- ,xlkp some distance above it. How far above the electron is the proton?

  Two 0.20-g metal sphjemp*/88 ppm feres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and tfp*jm8m/8pp ehe 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 c 20f;,fpt8geaw1d tweharge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fro teetf21g 0w,pd8a ;fwm the nucleus?

  What are the magnitude and direction of the exgtgc9fe b3ec:+4 l bb11su.2bsszx+lectric field at a distance of 1.50 m fsebstlb9+ce21g s4ub : xz3b1+f.gcx rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. fu4jg kq-i9 -mr a+hpzbg +kx9fpa-19What is the magnitude of the electric field at the location of the test charge?-g4-k hbz ifuajp+ 9k+xpq-9g afrm91

  A 5.0-C charge is 10 m from aldrsqy 0;i9e+ small test charge. What is the direction of the elec;eis9ydrl0 q +tric field?

  A 5.0-C charge is 10 m from a small test charge. What is 53g d:rp6hz1 6 nbzrktthe magnitude of the force experienced by a 1.0 nC charge placed at the location of the test 6trdgz35kz:1h pb 6nrcharge?

  Two point charges each have a value of 3.0 C and are sepaiatn x8y94 f*drated by a distance of 4.0 m. What is the electric field at a *8 afnd 94ytixpoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter ng g3xl7 cs/;u; d.8 r vgp7npqy;4nphstick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at th87 sl .gdupgcx;;r qpn3ny4 p g7v/n;he 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meteh.:b 7y-y2 9vr /ixxjprue-s yr stick and a -4.0 mC charge is placed at the 50 cm mark. At 9ubj2i/.xxr vs :rp-yy- 7y ehwhat point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC ar9i jp,e*w x)o(cu ;jxde placed at x = 0 and x = 0.20 m. What is the magnit(d ujc; x,)w9x pejio*ude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squavmd;dj 27) x,p;dh hrdre of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.7p r );,x;mdj2d dhvhd

  Consider a square which is 1.0 m on a side. Charges are placed at tc ieu7/y,hz;vv ho,o1 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). What is the myz/v; ci7u1ohhe , o,vagnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when673 atbiwozpyw3uk9q( 74 bog it is placed in a uniform electric field. What bobw ku94 iya73t (gw3zp6o7q is the magnitude of this electric field?

  A particle with a chf t 2wmr(5*zdg /vl2riarge of 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 molz6ywk1a;3zy 1ea1m ad k,.+4 wxtmg is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it 1 6mlw a,zw1kaekx d43a+yym1 ;tz.m oto be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed1qhgccq+a;8 c(,e q gr inside a uniform electric field, and is suspended againg+he q(, cqcg ;8q1acrst 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. Whaocl2k1n 8+a x4aee( xk qb9f4zt is the magnitude of the electric field 5.0 cm from the sphere's x n o9qeb4a2+k8lfc4xz 1(eka surface?

  A metal sphere of radius 2.0 cm.v mgcjapv:h0))v o5n carries a charge of 3.0 mC. What is the electric field 6.0 cm from the ce5)mg .no :vcvjhp v0)anter of the sphere?