State the law of conservaq0xm0js)(dtp.- xu glp hew1o.f0-ck tion of electric charge.

  Is it possible for two negative cha*vl:( wc vp+uirges to attract each other?

  Is it possible for a positive and a negati +;.kzjbh qy*hve charge to attract each other?

  A glass rod is rubbed with a n;yd(r k:- qbyy7 zbq-piece of silk. During the process the glass rod acquibrdby(qy k q:-7nyz ;-res a positive charge and the silk

  A proton carries a

  The model of the atom sh2yl;) lq abhc*t zqysrhrw p069 nnb/1f513ah ows a

  A neutral atom always0;q8d3 ljqo3dboey c) has

  An atom has more electrons than protons. The g)tmkewn rx/m.r poi02ma 223gj *hw4atom is

  Materials in which the electrons are bound very tightly to the nuclei2q,m4a5 )qnho ey7cv j are referred to 7y h)eao2q5j m ,ncvq4as

  Materials in which the electrons are bound very loosely f ys:kk 6j08lrn4fz2vto the nuclei and can move about freely within the material are referred zsl:k6njf2 rk0yvf 84 to as

  A negatively charged rod is brought near one end ofd165+wxs8 o pxc 3hdrlee4 t(9ba;eqy an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chard ;w r5px8bt(9she4eleq613d + xaoycged

  Sphere A carries a net positiv7ydx 7cnp)4h:hsh xevrm e m9y:0p+3oe charge, and sphere B is neutral. They are placed near each other on an insulated table. e7c )r4h xsxm9p0emhy:v hdp no7 y+3: Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscop4 hyjjwe) dm *)x2i+tte positively?

  An originally neutral electroscope is briefly touched with a positi4n khcll 17q0lvely charged glass rod. q4l 7l0 c1nlhk The electroscope

  An originally neutral-d7x bhfekv 7gm(z84pm4x) wqf8wg/ w electroscope is grounded briefly while a positively charged glass rod is held near it.mb7)8pz8vwk hw-(f4e 4 qfxggw d7 xm/ After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separaih,dwsbw y,sxr2 +c ;4te. Then a negative object is brought near the electroscope, but does not touch it. What happens tos2s w,bc,+ xr;ywd i4h the leaves?

  A large negatively charged object iv cws8 t g5.np7b)a 2ysatod40;lb8jc s 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 forwa s758 t; s4bcn0l2tpy.d8a)gbav wojcrd, 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 the Coulomb co1q4.phmd0b i t*jqs-r97jow mnstant $k$, which appears in Coulomb's law?

  Two charged objects are rr01(lyzam1i7y /hr g separated by a distance d. The first charge is larger in magnitud/rhgr1r ymiy7 1(za 0le than the second charge.

  Sphere A carries a net chi buu:q(-h yf 6,clu5narge and sphere B is neutral. They are placed near each other on an insulated table. Which statement b:5l hun uu,y f(ic-q6best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If t(s0m6 5c7ejxn jj rgo*he charges on both objects are doubled with no change in sjjm(x0 *5 ejgc6snr7oeparation, the force between them

  Two charges are separated by a distance d and exert dyo.0/iomy /u mutual attractive forces of F on each other. If the charges arymoi /y o./du0e 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 towv;/r;-)t;m 6h kqa4 bak isma the force between the)bamh4is- mawa; r;k6 ;vt q/km 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 mo b1d3x:5qs: d5vocvare separated 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 to the5v53m vbq cso :1d:xdo first electron?

  An electron and a proton are j.+a fa*b gu-s :ve*rsseparated by a distance of 1.0 m. What happens to the magnitude of the force on the fsa+s-fguar jev .* :*birst electron if a second electron is placed next to the proton?

  An electron and a proton are sepa4mpo6 w-ul, bsrated by a distance of 1.0 m. What happens to the size of th u6-sb4 low,mpe 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 square. Whk gn 65w )4 j)qtzb+3zacjfx +3z/rxuqoua -,uen a second point charge of -Q is placed at one of th-wfkz)3nqtja o 5j4q+cxuux +b), zzr a 36/gue 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 plac4d86-mqra. :wbzrkpnx ; i5-opir+ok ed 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 acirzoo4 p qr58 ;pnrwda:m. -ki6+-kbxts 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 followim; ni0 (4oxeopng is not a vector?

  At twice the distance from a point charge, the strength m2zk: 6zdvr4x1g 4qayz,1q zvof the electric field

  Is it possible to have a zero electric field value between a ne4nblp/ ;(by m5ydt mb4gative and positive cha m/db4 5n4mbyl (b;ytprge along the line joining the two charges?

  Is it possible to have a zero electric field value betweenu;* zz3go v h4tdc29f 6yw,hbu two positive charges along the line joininguy* 6owb;vz9hc34hud t2zg, f the two charges?

  Electric field lines near psitive5t n d)wt nawe*x s8(71eo otl)ifk*8*ptooi8 point charges

  The electric field sh5 q.polppjj8 a t1i5 9i-e/anrown

  Can electric field l-q-*gqkwq 7ru ines intersect in free space?

  A solid block of metal in electrostbv*; dhiw. tif*oxur;p t 0+)satic equilibrium is placed in a uniform electric field. Give a statementtb* v;)hp.0d*tix rwf io;u+ s concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metajo8-wg rj oyx r4+rdcu+8 g0c6l sphere of equal diameters are each given the same charge, the electric field (E) midway betweod jr8 yr+84u+cgjc-owr6x0g en the center and the surface is

  A cubic block of aluminum rests on a wooden tableyz,gjca bjerj: (21v0 w.x dgba5c;* n in a region where a uniform electric field is directed1gzr j w :jcb ;ced2g,nv0ba*5.(xjya straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an 9x 7/bn0mevpu electric charge

  A positive point charge is enclosed in a hollow metallic sphere thatgk9j4d/7fl dm is grounded. As compared to the case without the hollow sphere, the electric/9m4 7d kfgdjl field at a point directly above the hollow sphere has

State three properties of conductors in static equilibr a9m0neb,lq9n6fvl jh:yy* d8ium.

State Gauss's law.

  The charge carried by one eli upmou.v asr)tz995o + 7hw/dectron 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 more protons than e 25*iz6zn -as7idyzp:w5t tu1 g7mjwllectrons does this piece of plastic have?-isz z:uidty5 n zg12m*75a7jlpwtw6

  What is the charge on 1 kg ox9lbfso +ce 12f protons?

  An atomic nucleus has aj0jd,705k in41t. ncot 5he tcawui50qwv5 lh charge 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 valu 5q02qha7za* n3 nyntdes of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between hdn 2yq0 *zq 3n5atn7athem?

  A 1.0-C charge is 15 m from a second charge, and the force between thembg0 iv;,v; zlr7.z rpc is 1.0 N. What is the magnitud;lvr z 7r; ib.0cgpv,ze of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are xs8:tnb c9q * xg5jz3bthey?

  The force between a :w7 7xa(nfzjv u).ve;ivog :p $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experien(1spae goo:v8* uny;p8g/ rw3;a il akce a 1.0-N force. If they are moved to a new separas1;p piur *(n;ao gk/ ylow3v e8ga8:ation of 8.0 cm, what is the electric force between them?

  Three identical point charges ofpfi4gnb *p/* ln1u* la 2.0 mC are placed 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 /np p gbl4u*af*n1i*lacts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plansqs se)s bq* 52r1q- :5jraiiced at the origin, -2.0 m C to the right at x = 5srbjisi51*) rnq:2 eq assq 5-0 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 t7v5ui i qw0)hd- gz5yghe 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)wuqd ig0izv7 -hy5g 5.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed9*2:m*kxydc3wyv)ftxad v j2 2re)m n 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 the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-ler92nd*ce)*jvv3dky yf x:)tw x2amm2ft 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 is aa58 s5i8urys y+b*i lnm* pd(ht (0, 0). What is the magnitude of the net fasd m5sr8 y*b +up58i*yn(il horce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 f18:l ikbe.s; qryjc. = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the ne1. ;r.ebjqfsykl : 8cit force on the 5.0 nC charge?

  Three identical charges of 3.0 mC 4,jn +5 pk(2ucafrt fmbt;9h aare placed at the vertices of an equilateral trianglh+4tnbak 5(jm;2tc9,f r upaf e which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which r2rto/i (a6mv he-:io3nt a8lnmpv,1a*cgo6 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 actinga i/i 8rroopvlnt- n:6v mct1,em3*oag (ha 62 on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x =c0l q:zz7husdlgb((j(6:i7j . exbs b 4.0 m. Where on the x-ab6e:((sibx0q .lbcd shjg7(jlz7:u zxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. w xbf:+hddb pu /uk+3+Where can a third positive charge +q be placed so that the force ob:bpukhd++du w+x/ f 3n it is zero?

  A copper penny has a mass of 3.6+ kgl1(2zkwr i saa8w0 cu+vy0 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 gravityv lbk.dp27 7rrq(leqroo 7nqo x.7-pkwys* *3 by the attraction of a fixed proton some distance above it. How far above the electron is the pr7qq. *oldoo*(xq73rnplkr ekb v7r y27w. s-poton?

  Two 0.20-g metal spheres are hung from a common point by nonconl1kh fsf(6z mmd puept3 nij-sk2 n: fyl//0-0ducting 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 1f:0kstp/(6ikhl/- fjun 3zdf n2p l0-emys m$20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +4fd6x w3gz a;y6;zz8+ we,lpbs 0e. What is the magnitude of the electric field at a distance of 1.0 ,lwsefz;gza6pw6xd8zb3 + ;ym from the nucleus?

  What are the magnitude and direction of the elxv3p8 8crej4d86i t hvcuz sy9zk75u;ectric field at a distance of 1.50 mvptex; h7i8u duk6rz98yz53vjc s4c8 from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small te iy,cf7sy oa:l9j0,a t-ppcxse;e-k+st charge. What is the magnitude of the electric field at the location of the test charge?0s,ky-lec:ya p s,ojc a97+- ei ptxf;

  A 5.0-C charge is 10 m from a e ok sm;o+twvyq,1 7tmdk65d)tz98 sdsmall test charge. What is the direction of the electqdmdm t6 +7ks1yzt )wd9e,tkv5s ;oo8ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituyu* .2m8yp gsxxu (ffm)w 3t1rde of the force experienced by a 1.0 nC charge placed at the locy*p1 s3xfu2w trmm(f)g8.xuy ation of the test charge?

  Two point charges each have a value of 3.0 )0yi-fu lq*ney )8brwC and are separated by a distance of 4.0 m. What is the electric field at a point midway betwee-ry iu*8w0n yql )bfe)n the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metndli q9i r+8w 6zu.oa09okt8c3vj/vner stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electr6coo 38knwv9ztu9vra 0ind l 8/qij+.ic field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a me, ta*b ul;om;v-he+ad ter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric ,a*lvh;b do;a+u -etm field zero?

  Two point charges of +3.0 mC and -7.0 mCz) rsdk2d u-f6urp*w 6 are placed at x = 0 and x = 0.20 m. What is the magnitude of the elec -6fkrsup* w 6zdud2)rtric field at the point midway between them?

  Three 3.0 mC charges are ygh2k004y k6 wy516/fhtwz4fjvgfv pat the three corners of a square of side 0.50 m. The last co g v 2j4fk 6yz4ypfh/vwh1f5w060tkygrner is occupied by a -3.0 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*yl)2+gzl sh;g+o.ikth bqa yt)d8*0r-po q b placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at r sb ;q oibok2) l.zq pth+l-yd)*h8ggay0* +t(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 of 5.0 mC when it is 0;hq1a+rqrzsplaced in a uniform electric field. What is the magnitude of t+q10qsr zar h;his electric field?

  A particle with a charge of 4.0 mC ham3s)jvzity v3e64y6*b v6.ho )pqbmms 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 o64*r /y3c(e.v qaw yb5bwgyzvf 6000 N/C pointing downward. What charge mustvvw6z.(qre ayb wcy 4*/y3b5 g be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placedyss m4 fht230 lc+lj;l inside a uniformjt lcl3sm;lf2 y s4+0h 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 of +2.0 mC. What is tj13j3ws8 0 fih( wghwq;k8k xahe magnitude of the electric fielw fh3wi8(wkjk8 30xhgqsj1 a;d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha43va+i2 cf 6s oqb9s)krvieb(rge of 3.0 mC. What is the electric field 6.0 cm frob svba3)4fi k ir6c2(oq9 ves+m the center of the sphere?