State the law of conservation of electric chargwk-qy90,x f,76w ohfd z9yoox e.

  Is it possible for two negative charg7.tg, j2kyng kes to attract each other?

  Is it possible for a positive and a negatiz5y k(;quktef)swqb23 l9r4 v5ax q)bve charge to attract each other?

  A glass rod is rubbemgjciq.;g3 m5n v+vehp y:* k6d with a piece of silk. During the process the glass rod acquires a positive charge and tm5vivg;h*m n3jkycqp 6. :e g+he silk

  A proton carries a

  The model of the atom scj87n;5; fqyffdar9hh 4r22kz)c ixjhows a

  A neutral atom always k dj57 hmlvont: ln/5)has

  An atom has more electrons than proto94bn0p3i u/v sobaa2lns. The atom is

  Materials in which th/0jhj mmlnk . en+ jj93)7wtdte electrons are bound very tightly to the nuclei are referre)jdj0n tmjlkj7 e n+h9.tw/m3d to as

  Materials in which the elehg 4e .*sldxb6ctrons are bound very loosely to the nuclei and can move about freely withi*.exb6hd l4gsn the material are referred to as

  A negatively charged rod is brought near one end of an uncharged me9 h7mtej0so g)/:ssqwtal bar. The end of the metal bar farthest from the charged rodsmw0 s e hgs9ot/j:7q) will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pv5.vf+p n08f4spwd)l6gwchqx q6k + glaced nefp+l 8g6fhqvpvxkg0w 6 +wqd4nc5 ).sar 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 positive7: lqsaph2 vt-ly?

  An originally neutral electroscope is briefly touched with a positively reazw1(37vgy/ k sa27 a.ss3wtesl *g charged gkegsza .re3awva7/s (23wgt1sy*7l slass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posf2q* m;30ddc 0cnocg/x5an e mitively charged glass rod is held near it. After the glass rod is2nndc5mccd 3 xo;*q0/g0e maf removed, the electroscope

  A positive object touches a-ye2qb9g 3*vkam/dj a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the e9g*2 yq k3a-javmb /dleaves?

  A large negatively charged obr*i -; s:udmq cv7 6,p:vvbtwwject is 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 ballbi6vw:-cq7;pm,t*: d usrwv v 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 thejf,;by.+ aq ujs t3zi4xw.kz* Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sep63pvkd(k * gy0rwv aj,arated by a distance d. The first charge is larger in v6pg 3yk0*vd jwrak(,magnitude than the second charge.

  Sphere A carries a net c1 +9edk edakb7harge and sphere B is neutral. They are placed near each other on an insulatee7kde +b9dk1ad table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cert12s ly2 qvo yn-j5c4ifain force. If the charges on both objects are doubled with no change in separation, the force between thjvs q i1lf24oy25-ycn em

  Two charges are separated by a distance d and exert mutual att:nv0yjfg+6 goractive forces of F on each other. If the charges are sep y6 o+0jn:ggfvarated 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 forc +2 3zuu w*.amxb(fuyve between them if one charge is doubvu mb. (*fxu 2+zayuw3led, 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 separated by w5 8n.s ide2zha distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elew se8hi.z52 dnctron?

  An electron and a proton are separated by a distance of 1.0 m. We il2j: o ;m7-kr-ymrsjh6bk) hat happens to the magnitude of the forc)mks-7m hik ;:o yjb26relr- je on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distaxvt77.l ) epqknce of 1.0 m. What happens to the size of the force on the proton 7q xv)7lt.kpeif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pointiyu+tts x2 n7m4/ :yfmbve1a0oe:+nm charge of -Q is placed at one of the square's corners, it is observed ti oseayfm +nm m/b+ v7 unx2:t:04ety1hat 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 triangle.s/b.m.hhgp)aea l )on;a 2x;v 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 h;agh bsl..;2vo/ xne)ap) a mthe 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 hygb 9c67wdq:(n+0a- e-j -dcplyzpwnot a vector?

  At twice the distance from a point ch, abm3y6 kr j8hj)bw-n bz):ztarge, the strength of the electric field

  Is it possible to have a zero electric field value betwehhhkaa 0l.9 5jlr2w-hen a negative and positiva5h29hr h. klh al-jw0e charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two posqf*h*;q -5 dlaib3ba iitive charges along3lbb*i-id* a5a;f hqq the line joining the two charges?

  Electric field lines near psitive point chawn4;o/ 1eh.k4 l csdyirges

  The electric field s1ye:c9q.1s du kl-hzahown

  Can electric field lines intersect in free0hvf/6 1un-c inq.w(y8 m+hwqu.:px+dt rg m z space?

  A solid block of metal in electrostatic equilibrium is placedm*1: o2+nxwl0m7jh n /j qceyo in a uniform electric field. Give a statement concerning the electric fiee2oolqxyn h+7wm* 1 : cjn0j/mld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamepmy 4hhliis;m0;s(z 8ters are each given the same csis0y ;( l;m4phhzm8i harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rest2s1koarl 8 xnv: ok8-ms on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfacl8r-k a8so x1n:vmo k2e?

  If a conductor is in electrostatic equilibrium near u5; +)t6p gu44 ;pqgnzpztk sban electric charge

  A positive point charge is enclosed in a hollowj5zd8if--mf d fak lb:iaiys 6a: 3*8h metallic sphere that is grounded. As compared to the case with5flddsah :8f368j b ak fmzi-ya:i -*iout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eq/n,iat2)yjm t 4mkxfs w;w5p(33wg-bqp u sk9uilibrium.

State Gauss's law.

  The charge carried by one electrong +90shqm9l/y y, dwik 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 neh c2kq tcm75wyu g6x+4t charge of +2.00 mC. How many more protons than electrons does kutmc2yqw+h g4 x6c75this piece of plastic have?

  What is the charge on 1 kg of pg:jk / r/.wc55eptnj zrotons?

  An atomic nucleus has a charge os2i9)n9 lltv2k jyuia uo27l u9 5f;cnf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated b x; gmrpw9jq2 om2kb.-y 1.5 cm, have charge values of 2.0 and -4.0 mC, respectm-rbk2g ;j9 m.p w2oxqively. 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 1.0 N gqucu s2:4eribz jp0c1 hu)48. What is the magnisc:zhq u24ejuu g0b p4 i8)rc1tude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are i zway5bxm/a/ -a/:t ithey?

  The force between a pz,6ti8 f.zkw$30 \; mC$ 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-m t4afg*6(p +xe ehd.pN force. If they are moved to a new separation of 8.0 cm, whm.pdxfh ap4*6e+(teg at is the electric force between them?

  Three identical point charges of 2.0 mC are pl41.zw rfh i-ompviq6b qoqwyb: +,7x*aced 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. Wha*pvf bbi1+-x7oih :w wqozq6 .mq ,r4yt 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 o 2bk(k dp,hfg4f +2.0 mC is placed at the origin, -2.0 m Cb4k g(hd ,2fkp 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 positions: Q1 = 2 wroxkg+0 -dochax0 w4vh98+k.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 fo0h8 +x4howxdv-c+9 k0wro ga krce on the 3.00-mC charge?

  A point charge of +Q is placed at the cegj2gc.y uu.n5w 09ew qnter 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. . qgwyu2uw50gj9ec .nWhat 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 nCrd1ms 5zans96xh2lb 5 is at (0, 0). What is the magnitude of the net force on th r 12ahsdxl9bnzm556s e 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC4f/3n)tuk ,b tkcd:ozq/oen6 is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the d unz, :3b/kndko/4t ec )ot6fqirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ver j4srzr 0q;bg sszk/vq7+h8 h-tices of an equilateral triangle which measuresqsv8-z0jhz+ kb4 rs gsr;qh7 / 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 g;x)/y+q v yfa6a1/q ;cerlsb +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 ch; g /feyb+/ ;xqqaryc)1s v6alarge of -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 x l fp8y)0z*hy*maxm 66dhq7 br= 4.0 m. Where on the x-axis can a third charge be placpm0y)y* d l6qx a*6hh 7z8bfmred so the net force on it is zero?

  Charge +2q is placed at th-6oc3 xxpos1me origin and charge -q is placed at x = 2a. Where can a third positive charge +mpox3 6 1-ocsxq be placed so that the force on it is zero?

  A copper penny has a g((fiw)j1l l+vt b)vumass 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 against the force of gravity by the attractio( 1rd,cf1( s)6kdbhrrxt efs9n of a fixed proton some distance above it. How far abovec r(rrhs1)ek ,1x6 9ftbsd(fd the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poifa*dr8 j+p q7ent by nonconducting threads which are 30 cm long. Both are given identical daqp+78fe jr* 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. What is the magnitude of th,cgfk t* h5t9+ wbeurtpk 2h (r*--bcje electric field at a distance of 1.0 w*kpb5rjftk(*9her,cb+ g t2--hcu tm from the nucleus?

  What are the magnitude and direction of tha1dpmv xb,+/ g iw3v;ie electric field at a distance of 1.50 m from ap3i,i /wv v1xd;mgb+a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What it( c ai3oa*ef)s the magnitude of the electric field at the lcft(a 3*io) eaocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whpc83cw 84wg94mk 3wojj lma9 vat is the direction of the electric field?w8pa8g43cmc 3jlwvj o49kwm 9

  A 5.0-C charge is 10 m from a small test chuqzo k8f;7z b/ (eh1uy(;qat sarge. What is the magnitude of the force experienced by a 1.0 nC charb;suu ye(oz1fkq h;8q(7zta / ge placed at the location of the test charge?

  Two point charges each .pm9 a)ej.tqxri84pmhave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between. 4apetpi. xmr)9q8mj the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cha6gs 1 r0g ,tlwwkqn.toa0..dzrge is placed at the 50 cm mark. What is the electric field at wkonga6.10t d.r t,g qlwzs0.the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sww rryz;3e)ws1c8c 7db: ac1ltick and a -4.0 mC charge is placed at the 50 cm mark. At what point o1ce b7rz)8l :daswc w1y;wc r3n a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.07qm 8wbt18 h56o hyr zapytos2/ mw57e mC are placed at x = 0 and x = 0.20 m. Whatoqzb5m 5/2hp7h t 8aww1 so7y6myr e8t is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a swm;v3rv ecii(5om wfypk0o*0u3 z w:)quare of side 0.50 m. The last corner is occupied by a -3.0 mC cwyriw*3m om3w(p; 0 )5iof :c0evuzvkharge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed a 72drqxc)pfmy3n fw7 ).7f *dj,asqmw t 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 field at the square's 3a))cq*p7 swjf wmy mdfn77 2rqfx,. dcenter?

  A force of 10 N acts on g pa24kqd;-r ,owi:vxa charge of 5.0 mC when it is placed in a uniform electrv r: -k;gia,qow2px4d ic field. What is the magnitude of this electric field?

  A particle with a charg --l2uhzp ,jyke 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 g is placed yp9x: y *rgh8dj91yz fin an electric field of 6000 N/C pointing downward. Wha g1p9jxrfyyh yz98:d*t charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150, ,d,c5drafg j g carries a charge of -2.00 nC. The ball is placed insi,gdf, 5,ajrc dde 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 of +2.0 mC. What is the magnf3 n87vpd 7oflitude of the electrin3 fpolf7v7 8dc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm wts9gjc/36se /;azf l carries a charge of 3.0 mC. What is the electric field 6.0 cm fro;j3acl 9ft/wgs sz/ e6m the center of the sphere?