State the law of conservation of electric cwgy0ece 68ykw3 +(mvt harge.

  Is it possible for two n- g9 fg-askl -seh5z,obho 97legative charges to attract each other?

  Is it possible for a positive and a negative charge to atvs.1qaumx)2u tract each other?

  A glass rod is rubbedo*7vj x.jo6phniel/6 s9 .wze with a piece of silk. During the process the glass rod acquires a positive 9n7 . eo zj.pix*6o/j6whvlsecharge and the silk

  A proton carries a

  The model of the atom showz hdm+ix3;rk8 s a

  A neutral atom alway u-5v-tqo1.nw 9uwsuf s has

  An atom has more electrons u*hcnm15 48ln0z vuu vthan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are r)z 92: t s73hx -pwr,zeurnmjweferred t xmsp n7zrrhz:we-jw2), u9t 3o as

  Materials in which the electrons are bouu l+(x6ej,gty5veb3 pnd very loosely to the nuclei and can move about freely wil e ,tbgpju5v3+y6e(xthin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged ,rj upi70ld*+w1 zilm metal bar. The end of the metal bar farthest from the charged rod will be char7*zi+lpw, 1u d0lirjm ged

  Sphere A carries a net positivsm3twcj*ui y9sb4 s3 )e charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a swbsjiyc 3 u)3* 4mts9wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positiveld hci9y 2m:/wl7m- wtjy?

  An originally neutral electroscope is briefly t l-07/mcykdep 09qlmt ouched with a positively charged glass rod. The elee7c0dtqm0/l9lmk p-y ctroscope

  An originally neutral electroscopei6 w2+tksd e g4);lsmi is grounded briefly while a positively charged glass rod is held near it. After th t6s)iid2selw k4+g;me glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separakzd2z,1i4 umb te. Then a negative object is brought near the electroscope, but does ndzmb ,z k14ui2ot touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A-f.-p rg9b wdl 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 tid9.gwrb p-f -lme does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb 6aitr*7 gy sv3lon,. xgk j(-lconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distan9:unhqacdiu 1dho,f b+8 47 xoce d. The first charge is larger in magnitude than the second chargh4b9 uocx h:+ u8f7dq,od a1ine.

  Sphere A carries a net charge and sphp/) gb 7esw;l ,r+hrnhora)r-ere B is neutral. They are placed near eacl+/r s beg-hnr,7 p);aw horr)h other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otgz0 ecz 6/vgbcc :o7n8her with a certain force. If the charges on both objects are doubled with6 bc: ce0ozgcvg7z n/8 no change in separation, the force between them

  Two charges are separated by a distance d anyvy) g k43pr(bd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the n4(ygrpy ) bvk3ew mutual forces?

  Two charged objects attract each other with a force F. What happens to t4en jlv:otk0l c7.6nj he force between them if one charge is doubled, the other charge is tripled, and the separatikln ct6 047j e:n.ovjlon 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 happenvpz4 1 bbkw;hq 0b;zi0s to the magnitude of the force on the proton if a second electron is kp;1zb qz b0 0;4whivbplaced next to the first electron?

  An electron and a proton are separated by wl:9dppj2;lik+ st uz 1yc): oa distance of 1.0 m. What happens to the magnitude of the force on the fy: l+p:z9tu1oiwlj;2sp)dc kirst 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. What happensz3cg,f s+(pp/xxr g) y to thp)/zp+ 3ycgxsg rx,(f e size of the 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. Whn pt)al2c 8fi fnlx69g vx5w(4en 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 thexnn82)vxf46i tfc 5plg 9(awl 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 centroi2gddfisd;12k- wm qskau0;(a -vv 5gld 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 acts on it. What is the magnitude of the force thaafqgk5i dv-us;a2g-2 wkm ;v (0dl 1sdt 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 n9 m9rsc2l7h ya vector?

  At twice the distance from 7+h dg zq/) ysiy)dfp9j0mhl0xo cj9- a point charge, the strength of the electric field

  Is it possible to have a zero eleh,;7, sdh xl0gc6pslzctric field value between a negative and positive charge ap l6s0 ;cgxz7sh,h l,dlong the line joining the two charges?

  Is it possible to have a zero electric field value between vhasvo +db ibq5v)ee0; f:o2-two positive charges along the linef: +voasqe- 50hd vio;b v2)be joining the two charges?

  Electric field lines nearkccsg6- *q+r u psitive point charges

  The electric field sho4d+ 6mhl,sx z1i/o 9pcz/ kvqtwn

  Can electric field lines w ;dkil53o*tgu 0rgixienb9(8od* b6intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed:yd7 ojrq79z j in a uniform electric field. Give a statement concerning the electric fiod: z7yrq9 jj7eld in the block's interior.

  If a solid metal sphere and a hollow metal spherq 2g h4 y.t3bhvi:2aome of equal diameters are each given the same charge, the electric field (E) mibgvi ht3.qhm2a:o 4y 2dway between the center and the surface is

  A cubic block of aluminum ressi ntkq:ve2djjcg - d0inq+p112//qfts on a wooden table in a region where a uniform eli 2k01qnt 2/evjqjq/-c: fddg+ 1spniectric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriumr gez9 ,rwlvajg/us2z+ k/1i3 near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that isqfhqlikgw +hoc ac wt/0 lhx(t9) s48,p)1h 6t grounded. As compared to the case wii+sat,fc l1/th pq6qkh0)9hx wcw4o ()lt 8ghthout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equ)z9 civc:uc;*j :r dkvilibrium.

State Gauss's law.

  The charge carried by one electron isl quw c6dk7s2l*nn4rquz7 t7 : $e = -1.6 \times 10^{-19} \; C$. 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 litqhr tj*vy-v .j2 3:electrons does this pie-23j:itvlq .vrth*yj ce of plastic have?

  What is the charge on 1 kg of proto6ix0sx6 zlk* fns?

  An atomic nucleus has a charge o s4k61u3j lf jtv6xq, )1sd/:u1oc7s xhmzgn hf $+40e$. 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 -4.2xv0q :x 9 /gjczj.zcr0 mC, respectively. What i 9z x:vqjcc20 ./jgrxzs 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 Nafy +fjb 4s90oej2 qd0. What is the magnitude of the second char2jy0+f fe0da94 sojb qge?

  Two 1.0-C charges have a forji)p nm ,2 /*pnwbsu/n zl7+t.otzdfq9uo/l+ce between them of 1.0 N. How far apart are they?

  The force between a h18v skw/w3n3uvu: qv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apa7g6 n,z0 afdzjrt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the ed6jng0z,f z7alectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thewh m/8 xhx3hb4 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 on the charh h8b/4w3hmxx ge at the origin?

  Three point charges are placed on the x-axis. 8icog yqu*.m 8 A charge of +2.0 mC is placed at the origin, -2.0 m C to the right a8 m.g8ui *ocyqt 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 (mk*6ld7kt6kqz 5tszare located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.z(kltk 6 *6mqkt5z7 ds00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point ch6 n hbaz .r33/phgpjr2 5epr)harge 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 placedr5jh3hp.gbp ez2ahrn )pr /36 at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.2 6.lbal5i ygf)zsk f410 m); Q3 = 5.0 nC is at (5.igf )l6lzby ks fa240, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0) o. o l7(ewvggbmexv9:h.)c(w; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dege.ow( g mcxvv)7 (:wb. ho9lirection of the net force on the 5.0 nC charge?

  Three identical charges ofw65gxh..;+qhe5zpx p yisl( u 3.0 mC are placed at the vertices of an equilateral triangle which mezi.s;wlqgu.ex pyp xhh(5 +65asures 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 are separated by 3.0 yuv+4* jii vd;m. At what point, on a line between the two charges, would it be possible ty * jivdui;4+vo place a charge 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 at1)*n5zb:e x/j lgfdf e x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on i)/g*lf x: 1jfbzene5 dt is zero?

  Charge +2q is placed at the origin and charge -q is plw otuf:s* ::ydaced at x = 2a. Where can a third positive charge +q be p*u: ofy: w:dstlaced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o 5z m dji8)anidmr,4v;f $4.0 \times 10^{12} \; electrons$ 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 t/ i6tc;yn63 1 cjmaa umull*7nhe force of gravity by the attraction of a fixed proton i n l/ulcycj*;ama tm6nu1 367some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tha+c,kd4jlh.v sh7 i-lreads which are 30 cm long. Both are given identical charges, and the electrostati+ 4h .,ad-clkihs7 vjlc 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 cxp5nggo4 v z9v/u4jf0 vr:ksi96mq 2u harge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucle5g 4uf49:kmzp0sn2 qovg 6vv/9 uixj rus?

  What are the magnitude axwm h5n1*r(iw9 v ga;jt j/4zand direction of the electric field at a distance of 1.50 m from a 50.0-nC chargj hww;rv945 gtni a1x*az (j/me?

  A 5.0-C charge is 10 m fr5+9z;qo j1u/d fub /fag8 v:49oxa zmkf(ewecom a small test charge. What is the magnitude of the electric xo/9:fz/d ;bv1fag j c4 ewu5keqz9(ua8mf o+field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of ta d-qfm4p :24ud1xp+- s qkbnhhe electrqq4-x 2-p fk +mpdadnh:s 41buic field?

  A 5.0-C charge is 10 m from a small ;jnwd+)dzmo6 test charge. What is the magnitude of the force experienced by aj)+;wm ndz6od 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated bymaz5p, ,y:hd y a distance of 4.0 m. What is the electric field at a point mzm, y5hdpa:y, idway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mq; yvv grc.xbndw10x6ixs.+:eter stick and a -4.0 mC charge is placed at the : sbc;yd+.x0 1. 6gxnvrqwvix 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm m v-t9f8lg. tdrark of a meter 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 field zero v8.tr9gft- ld?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 anzyq5q-2anfz*r :dazcw+bo2 ur .po+ ;d x = 0.20 m. What is the magnitude of the electric field at the point midway between *+znwrrzq2z+yad. ;2 fubp c-oaqo5 :them?

  Three 3.0 mC charges are at the thre47,xe/w0vaxs:wv4u yq) yd ime corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cxeus mwya,xi 7 /) qvdw40y4v:enter of the square.

  Consider a square which is 1.0 m on a side. Charges arxic)oskzei 9w. s.fhc*r1kzg, 3*2bg e 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 e, c *)gr2esk.i3kwz fo1c z*gs hxi9b.lectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC 6g 1r2jlapqn3r4k 7dvwhen it is placed in a uniform electric field. What is the magnitude of this elr vd1 43krlj72aqp6n gectric field?

  A particle with a charge of 4.0 mCwh.4d k)zua y( 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 iseu)nd hpw *)o7 placed in an electric field of 6000 N/C pointing downward. What charge pe u7ho)*)nw dmust 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. h0 q2 mk;ik*j5e,fh cjThe ball is placed inside a uniform electric field, and is suspen ;2jmq hci,fe0 jkh*5kded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 mcc,ebq /tl 98cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cq lbm9,8et/c cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrl 3 t)/qf,mdjh- buw3b8zopy,ic field 6.0 cm fro ,) q uyh3z8w /bf,3dtl-pbmojm the center of the sphere?