State the law of conservatwme/f5 k;me0+3 j wffyion of electric charge.

  Is it possible for two negative chaq.p ;9b9 m+elx10moq 7obhc 1 ghc4oerrges to attract each other?

  Is it possible for a positive ah ydqwqdk) 9;b5qg. (fnd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During th8ukaerz:basz/ d +sfjs/2w dp6 uc18a*)zq+ ye process the glass rod acquires a positives2dzzj++rsazf8/* aeu sw1bd8a) p6ukqy/:c charge and the silk

  A proton carries a

  The model of the atom dm+pa n38 n9 cikl3;j0tzjou(shows a

  A neutral atom always hk sqk6u; gm9r*6cmi 8vas

  An atom has more electrons than protooc9 e:ss0 o(ppns. The atom is

  Materials in which the electrons are bou cfloltzrba hmp-4+sp*a 66-)nd very tightly to the nuclei are referred tof hp-z) ro*46llcastam +-bp 6 as

  Materials in which the electrons are bound very looselva26crti ; hk72tsn1jkd (gayk). +lly to the nuclei and can move about freely yv2dgsck7r+;62jkt l aa i ().tknl h1within the material are referred to as

  A negatively charged rod is brouq1;js4p)i yt* b5palnght near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be cha4*pn;l)q tjp5bsi 1ayrged

  Sphere A carries a net positive charge, and sphere B is neutral. They h 6 ii3t uda6;cfe -k1rv8u9pbare placed near each other on an insulated table. Sphere B is briefly touched with a wire fit1c6 ;9v6-r3uheabukip8 d that is grounded. Which statement is correct?

  How can a negatively charged rod di* kj2ju-p (-n pb0excharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chaizzmjz4 u-f 9,rged gl m49,jzfzu-zi ass rod. The electroscope

  An originally neutral electroscope is grounded briefly whilg1-wyi x ;lps9v5v*twe a positively charged glass rod is held near it. After the glass rod is v9 xi-*wwys5 ptvgl ;1removed, the electroscope

  A positive object touches a neutral electroscope, and the leave ukmc8(5+o . 4afappios separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to+5fao.4p cuki(m 8poa the leaves?

  A large negatively charged object is placed on an insulamg) iwxsa1*r/ n6ggd 0ted 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 stopg n/d 6ig*raswx01gm )s. 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 Coulomb coni9bu. 6gd6zux stant $k$, which appears in Coulomb's law?

  Two charged objects are sejr4 hh/bm( z3z(5tkdx parated by a distance d. The first charge is larger in magnitude than the second chrh5z(z 3k (x4j bh/dtmarge.

  Sphere A carries a net charge and sphere B is neutral. They-(ekw+: ug wxdl0.5phivmj ,z are placed near each other on an insulated table. Which statement best des,ilkmp.gjhudv+ 0z:-5(e wwx cribes the electrostatic force between them?

  Two charged objects attract each other with a certahub,xza-6 :*k hdzt f7in force. If the charges on both obj fbhh*6x-7u k:tzda z,ects are doubled with no change in separation, the force between them

  Two charges are separated by a distance l3ovf)xei76) t*mk nf6lwt-y d and exert mutual attractive forces of F on each other. If the charges are separated by a dis6n*t 7ty-kvlof) x6iw)efl3mtance of d/3, what are the new mutual forces?

  Two charged objects attract each other with c2rc0c) qg(uy)ln 6 qpa force F. What happens to the force between them if one charge is doublel()q2qyc)0 cc g p6unrd, 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 a distance of 1.0 y z w1 aav9049rfnbb9om. What happens to the mab94 wy9r0z f91voanb agnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton zsy ze8:0d nr+are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to thene zz8+:dry0s proton?

  An electron and a proton are separated b4 szd m0yazt.4.e8 cbny a distance of 1.0 m. What happens to the size of the force on thcat4db 0z.z s8.ny4mee 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. When a second point c wll3w5 n-nx k/xvk)+s 0dqv6v9-oaz rharge 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 i zxdnqx+ 3 - w -5alksl6nwovr9vk0)v/s 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 centgnlq .v+hsl uugg9hb6,w95 p2roid of an equilateral triangle. When a second charge of +Q is placed agv l h 9h.u6gs2,9+ pqnblwu5gt 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 at one of the other vertices?

  Which of the following is not a v,mi6f0/q -da om e8ukaector?

  At twice the distance from a point charge, the strei j9gxdmv61t7 ngth of the electric field

  Is it possible to have a zero electric field value between u*o f*k 7v ueuaw2x*2ga negative and positive chaawgvu722 ku **euoxf *rge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive + jspdgi25l9 b6:wgvlcharges along the line joining the two ch+b6i2wslgv9g 5 djp:larges?

  Electric field lines near psitive pomrr,b18nf4 kl* bj;tr -s7 wakint charges

  The electric field sqg. w hiqf61kdognok :o7 fk 0fk+q8y x-71w1lhown

  Can electric field lines 3:ussjgm*e0j intersect in free space?

  A solid block of metal in electr/ywbsnl-18/ tf spo.rn :sx )iz 1qu0uostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's 0t-.wly8uss qnio1f1/:szx n r)ub/p interior.

  If a solid metal sphere and a hollow metal sphefdybgnzu7 ti7((v nbo ;q*4)fre of equal diameters are each given t 7 ;qvd4f7z*fnb(tiu (bgony )he same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a .vdpd )(s(nr scswiw xa88zr 2apdl h/*)q,c* region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top rq ds) xwrav s82,.dl ap/i( pw**c8(zs)dnhcsurface?

  If a conductor is in electrostatic equilibrium near an elecilhe0a utj,:vt)+ fsi k;9mb* tric charge

  A positive point charge is enclosed in a 3d,pmd9n8lfbhollow metallic sphere that is grounded. As compared to the case without the hofd9l p,3n8d mbllow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors i y0l(qx 57fsgwmnr 30s1fos;qn static equilibrium.

State Gauss's law.

  The charge carried by onpf5, +9i0f8 jgvofy6 kkfwf ptr77p (pe 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 1xzu ;lm+)wxla net charge of +2.00 mC. How many more protons than electronx)zu mxw+1ll; s does this piece of plastic have?

  What is the charge on 1 kg of protons? 7ut*l. ofq(qyr f.z7p

  An atomic nucleus has9 oxv ib 9d4m0gfo(k:c a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, s6z 2zdqc1 g4mveparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrivz2q 1gzc4md6c force between them?

  A 1.0-C charge is 15 m fp 7ahqiudyl(mofq6 *v 15:0y(qyy d/ qrom a second charge, and the force between them is 1.0 N. What is the magnitude of the seco5myq7(0:(q yfivph*y1q d 6oad/uqlynd charge?

  Two 1.0-C charges have a for ))fl*cascbym ./f /hnv71ulqce between them of 1.0 N. How far apart are they?

  The force between a 1zfd *)h-lqpe$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0;sv0 e cy5gia: cm apart, experience a 1.0-N force. If they are moved to a nee:; isgy5 ca0vw separation of 8.0 cm, what is the electric force between them?

  Three identical point8mzz9yf 8v2) a1ojdzo charges of 2.0 mC are placed on the x-axis. The first charge is at9yo88fvmdzz1 aoj2)z 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 charge at the origin?

  Three point charges *2/mfd +nhmqsph2 f-l lmgrc1hl(7d/are placed on the x-axis. A charge of +2.0 mC is 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 mh h-c/q 72*lffmm2(+ dps1 nmrlg/dhl agnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followin1 t(8ndbaog s6g positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is tbadgn (ot8 16she magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center oaw4ycvor x p6/yhq nhia1;)b i3g*8h*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 magnitudeh/qi*cxy6*v b1yao;4igh)pna whr8 3 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); Q; tpuitrz fdho,5709k 3 = 5.0 nC is at (0, 0). What is the magn9o ;,zr kdh5 tfit07puitude 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 at (0, 0.10 m); Q3 = 5cprzys2 ig 6rv vn-7,/h9g 7xor qb5j,.0 nC is at (0, 0). What is the direction of the or, 62cjgp iyzsnr7xg, 5b9 /7 q-hrvvnet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at p5g.t ui. 7lldthe vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which actg.7ut.pi5l dls on any one of the charges?

  Consider point charges of +f29q 03pwbipqz ab6 2 4xrkde;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 4xbe bwkdprq0 i26q;z9 3p2fa-Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origiuwg/*j 2;rpc/h9 ewjq n and a +9.0-C charge is at x = 4.0 m. Where on thejj/w9crpu 2w /ge hq;* x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chuw2qne)5, km5 )xrn w:fbh8vharge -q is placed at x = 2a. Where can a third ponx wm8)h)e ,5 qurf v2bh5kw:nsitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 0 mg7*anq m38 kh 58 ,en.tmfikljt+gw3.0 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 gr j o. 63w4scpcu0jr4wxavity by the attraction of a fixed proton some distance above it. How far above r3 wj4osj p.w4cu0 x6cthe electron is the proton?

  Two 0.20-g metal spheres are hung from a cu0j eb f3f1rubrup68s/sl0s7ommon point by nonconducting threads which are 30 cm long. Both are given identicpsb8f03ue0u js fb/u7rr s6l 1al 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 is45 0l1rb yo8jt 7wwxdc the magnitude of the electric field at a distance of 1.0 m fr 54rtdjbyw lxoc8017wom the nucleus?

  What are the magnitude and direction of the electric field at a distancwz4p 7d7n0jp.n; kufy e of 1.50 m fron7upnkpzjf 07;.4 wyd m a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofbz :1gd0 eb7rros l(k0 the electric7 eogrs1k:(dz b0lrb 0 field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. l (z1 /eh0s 9sk lbsj25o*daysWhat is the direction of the electric e 9s/ds 0lz5syhla o2*bs1(jkfield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the:+5meoqk1; qoh fpfm1o)6h.7c fj: a9 isgnps force experienced by a 1.0 nC charge placed at the locasom :nkh1 e5c91 ag:fpoi;o+) q.h6sj f7 mfpqtion of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dl pae ixj2 qc7jw)7 c c8:)fos1qflb*3istance of 4.0 m. Whajsxje l7 p3wfqca 7182)ic* o )blqcf:t is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed a, qq0ln6w;.l1z e- m(fodfnnwt the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the w 0n fo, qwz.n-16d;(lfl eqmn30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a megy6:+ b)yhu6zz+m2in wzxt w0 zv7x8 oter stick and a -4.0 mC charge is placed at the 50 c6+z8by):o z+m hz6ntux7 w0 2yw vzxgim 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 = 0 and x = 0.px-i)j l)4xmv 20 m. What is the magnitude of the electric field at the point midway between mpvjx)i -xl)4them?

  Three 3.0 mC charges are at the three cor ,t 515,2 w wb)cyfrgo3wfpkrayck:y )ners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC cha3 g:kk1 fww)yoyfcyarc5prw, 2, b 5t)rge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cger3 vu+hn+ z:ufo6b n5 ;q/wnorners 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 fi 5 qhn+:;n grveuwuf3/6+nzboeld at the square's center?

  A force of 10 N actsu4o3aisuuh1 b( 2p1j a on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude ofsa 243u ih1(ajuo1pub this electric field?

  A particle with a chargen gre6zw4gl4ucnu5 . ; 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 0.1+wg2 oh n oegg-+ ( z7mj)bew4uc4nte120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be sh 4g+2ob1j74ewoz+ u gegm-) (ntwne cuspended?

  A foam ball of mass 0.150 g carriw:il;aham 2m-es a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Whaiam; la2w:-mh t 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 magnigeap c itzo+2f+v0::stude of the electric fielgtpzeasfoic ++:02: vd 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What(dm1way3w0k/w xb ,v j)4n yhw is the electric f/ v xywn3bm0awjk4hwyd,(w)1ield 6.0 cm from the center of the sphere?