State the law of con2bg jk.koy*;iservation of electric charge.

  Is it possible for two negyw-p:lr bib1k z1+w-9(rute iative charges to attract each other?

  Is it possible for a positive and a negative charge to and5u*fw8 qws8(vuur1e yc,, vttract each other?

  A glass rod is rubbed with e( j.iq2cc)nt yd2u (ra piece of silk. During the process the glass rod acquires a posit)ji(t(.qnr 2u2y ecdcive charge and the silk

  A proton carries a

  The model of the atom shows ay9v t,ss256iqnch( u :fn eq6 t,sozi1

  A neutral atom always)6ivd bb o(c 6dns+*gd has

  An atom has more electrons than protons. Thei 2u /l/bn8lnlz0.o5y6:zlml jv6glk atom is

  Materials in which the electrons are bound very tightly to the6qubodd9ko*+ nuclei are referred to as+obd*6 d 9quko

  Materials in which the electrons are bouk /n ayo)wf79ef0 -ibund very loosely to the nuclei and can move about freely within the material are re )ak0f-9fbi7en y/ owuferred to as

  A negatively charged ll26hm7xup5fh- j)ux52 yeq 90ssm jorod is brought near one end of an uncharged metal bar. The end of the metal bar far 22q )shf 6sjx5xum5mlj7o l9ypue0-hthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac/( 6.x f1km- . 8bxuzivzpifkfed near eachmz /x u.(6z1 8ixffvkib-.kfp 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 positivce2 d.7n0lxy f qi0pw2ely?

  An originally neutral elecxj 0 14 x(h jrry3*wykekr7gi(troscope is briefly touched with a positively charged glass ro3 wi(j0kx1rh 4* r( kyxjy7ergd. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chacd7:p7-5xy k9 q1l1gknjrvmj rged glass rod is held near it. After the glass rj975xngj mdk1-crk:vpy 7 1ql od is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves u69 d1ga)cz/g )aislf g..d zj8 fe(mpseparate. Then a negative object is brought near the electroscope, but18 gig)g9c udf (.a.zj ls zam6d)epf/ does not touch it. What happens to the leaves?

  A large negatively charged objecwj)/z 5-s mfpyt is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but)p-zj fs5/ wmy 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 of the Coulob ccw43i n2.xiafpc2,8vd; ;gpk0g scmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firs*c :9.5+h y9fybe fbrz pbfqd7t charge is larger in magnitude than zhc5be9y7+.f 9f*bqpb :fdrythe second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neaj6jnhk,9ya5 pj.81 o v4igti6yo0koqr each other on an insulated table. opt0 9kgikhoy ,61qonj5y8ja 6v4j.iWhich statement best describes the electrostatic force between them?

  Two charged objects attract eac9mh)v mxhq j rwg38xc/e7u y670c4q njh other with a certain force. If the charges on bothyr )63 n7 v90hxjwuq7 gm84qxhjmcec/ objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attr0x;j ivy.:i7g 7mc 0cwk*ina 55moc ygactive forces of F on each other. If nca: .0jk55vmo w y70g iic7m*;yigxcthe charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a7lgswgbq ulfc2-nvg..r57lsk 6 w 8u3 force F. What happens to the force betwee8b3ngf.s ukc-7.vl2 q 5wu67gg lwr lsn them 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 ard/nuj *e9 a5271ir4.vy osqms rpl pt8e 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 nepar oqsrjim. *1d4p9 ne/72 t8vyls5u xt to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What ha quy3cab x,/fw:sd b/+ppens to the magnitude of the force on the first electron if a second electron is placed cdwy/ bus:+3 qf/b ,axnext to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens tiz1)eik.qf- l o the size of the force on the proton if the electron is moved 0.50l. i k1eiqz-)f m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a lu nf2n(*-cjm 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 * (lnm2f-jcun, 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 cent-:txy/* 2ibwn tjd4tz5u bch5 roid 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 that acts on the center charge due to a third charge of +Q placed ahb / tb25cjtw yuxz*:-i nt45dt one of the other vertices?

  Which of the following is not*,hi:at0qu s2p oz f,ueryy (- a vector?

  At twice the distance from a point charge, toat9h 8* 9:0kqicwqn k-lkbp7he strength of the electric field

  Is it possible to have a zero electric fiemyzq( ,kqd.zhtr92q cfe - b95ld value between a negative and positive charge along the line joining the two charges9h2 5rqzq(ftb-k.zc9 mq ey, d?

  Is it possible to have a zero electric field value between twkpg7,q bgcgp6x) gd)6o positive charges along the line joining the two charges))ggx, pkg g6cb dq67p?

  Electric field lines near psitive poi nqh4c -w/ johb2)r5gnnt charges

  The electric field shg wuz k621rztop0p3y5own

  Can electric field lines intersect inm1 -i3regos m) free space?

  A solid block of metal in electrostatic eqb.2 pj :a1dtko qpgj:+uilibrium is placed in a uniform electric field. Give a statement concerning th:2joa q.gk:1jppdb+te electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters zk2lx( w:+lg rare each given the same charge, the electric field (E) midway between the center and the surfacek+rglz2 (lx:w is

  A cubic block of aluminum rests on a wooden table inz20z w+ tyo:u .ldyvm/ a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top/+zw 2ut0d:olvm yzy. surface?

  If a conductor is in electrostatic 6 --b4cctkyuuxf- tn8x un02m equilibrium near an electric charge

  A positive point charge is enclosed in a hollow in c7w,fg.-thu*td j a+ 7wpw4metallic sphere that is grounded. As compared to the case without the hollow sphere, the electrigwu,pw-dw 7tn+47*fitj. ahc c field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.te6j -kap *z4igqr64s

State Gauss's law.

  The charge carried by oip6e mlg7qrni1 p n9;9ne 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 charge4kd/ ;h mpom7v of +2.00 mC. How many more protons than electrons doe4;h/7 kmvmpods this piece of plastic have?

  What is the charge o 1+rtskj r2hq*(27l8 lr k .iadvjoj-wv5r+xbn 1 kg of protons?

  An atomic nucleus has a chargje44h2p msoe+ e of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated byp+k i)f5khvh78v p9oxl pn:/g(z5gt x 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What zv g)/589k 7+ofp ix (pgxl:thpvh5knis the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fo q9-sxh 8p3 +vmoewp0irce between them is 1.0 N. What is the magnitude of the secop0 3 pxomhes-v 89iw+qnd charge?

  Two 1.0-C charges have a force between them of 1.0 N. How u:hr.e6ni e3gfar apart are they?

  The force between a 7it)j/cggkx171rjsqbtpd e . 9f:c*n$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiaqb v/.t1815gpni j 2o*tp5f cq9wa pkally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cmtppvc 52.*a9pngtajib1 1 fok/5w8 qq, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fv84im dj*9rr eirst 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 vid8j*er4m9 r which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 m/q6 :w )2epyew.q20 hliu fyjlC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm jyqw0 qyl :f hp.62 eu2)i/lewmark. 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 = 2.00 mC lt7 kzs03oqw oa33ega+y do,4at x = 1.00 m; Q2 = 3.00 mC at3g , ko7qzo04 tl a3aw3do+sye 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 ohpwnz1f6ocf0(h s(h/p zjwqp 7+7uh/ f 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-lej7pn/cu(f fo q(s0hp/hwzp6+7h 1hzw ft 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 atc+d +4:8j o manhko biqr2kjsg 6;+sd2 (0, 0). What is the nksr 8 aj+iobdckqoj4s 2+g;6+dm:2hmagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is avdor0k 2+h, tgl9g/wnt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 2 h+wln/9 0odk,vgrgt 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertixpz *:(*m wc0(k.a w0 v ;olnsudpabvp-2w*zwces of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chawb . -wck 0nau(:xo*mavlp;dwpzz *v2sw( p*0rges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what y(pl 6jwn7 y z owrzlx(;jv-w.f*3q5 rpoint, on a line between the two charges, would it be possible to place a charge of -Q such t .znoqwy*rv-ry w;5( fwll3jzp(6xj7hat 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 = 4.0 m. Wherdl2v d t -ge42hl:wnj*e on the x-axis can a third chargehv4g:2ddn l -wje l2*t be placed so the net force on it is zero?

  Charge +2q is placed at th7 pd6zkpw6inzpj / f9p4u4v o-e origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plaipdz o6 nuf j4/7 p6kvp-p4w9zced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A y7x xuqbl2pq,38b7-l (y oxvbtotal 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 gravjb ck*2c :quv jugym 0;t/v 3m3*cklk1ity by the attraction of a fixed proton sck ukj*t* mc:cj;qg2y3v3 m/10lu b vkome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by .iom4ce1e4 a qux p5-gnonconducting threads which are 30 cm long. Both are giveagxoc- 14m5upq 4.eien identical 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 magnitud:8: p dci ge/r(r e) / poz2le)zpro.xinnt7w)e of the electric f (o/ t ezr8e edrcri/)zn:p)2ip7g lp):nxo.wield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.509c-w ixld*9x,q f:s vl m from a :i c xlf9*ql9,vdxw- s50.0-nC charge?

  A 5.0-C charge is 10 m from a smalle9(7)on amt28u oi cnx test charge. What is the magnitude of the electric978utxo)nnem(ic a2o field at the location of the test charge?

  A 5.0-C charge is 10 m from awo;:wczi*o gh48;u v6 yv/esg small test charge. What is the direction of the electric fieldz6g4vso c8:/;v w;e*ughoywi?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theqkha.m)k.r6ai m btu/i 8 g-8m force experienced by a 1.0 nC charge placed at the locat)6m /k kg-i.88murhi a.mqtabion of the test charge?

  Two point charges ea ,mdxu vx8t46+ obob8lch have 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 the two 68, vxd8xu+booblmt4 charges?

  A 5.0-mC charge is placed at the 0 o ea6kihv t9h6/76 v2-a oddnocm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electricvhk-hdtvi 6o9a6adne6 o2 /o7 field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meterap 1 ndxvnd8r/bolz;:o +n.3w stick and a -4.0 mC charge is placed a a;8x1 nw+vrnz/o bno :dd3.lpt the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x =bt 7 fxeuwl-(+ 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between the l(u7 exw+-btfm?

  Three 3.0 mC charges are at the three corners ogg 6rnat 9/0dv6)lgokh7 zig47i2p g yf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Fin/y)g0in o6hprg6 4g77i d2 9gkzagtvld the electric field at the center of the square.

  Consider a square whic71teu xvz3;q nh 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); +3.0tx1 z3u;v7neq 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 whrorty -lqj:5q i 8fb 4r8+vtza/ :eor*gg6c/men it is placed in a uniform electric a8vt+- : gq5jmlbc:irrofy/otr/z8*4 qeg6 rfield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass o 8;gk1tpsv0vq f $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of ma;4 tdatv)arm;zqw:o ,u p0ah4ss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the vo au;ar)h:z q04p,ta 4md;twball for it to be suspended?

  A foam ball of mass 0.15g 8 7endif/y,zf9jno )0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Who8j nfzed g/9i f,y7n)at are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +)h mn33vz,fjo 2.0 mC. What is the magnitude of the electrich fnmv,o z3j3) field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm casovjk9o b u 2*pkkow1)dd)16irries a charge of 3.0 mC. What is the electric field 6.0 cm from the9 p1obkud))v 2ko *siod6w 1jk center of the sphere?