State the law of conservati-,kiclhdb r.z 8ol+t 7on of electric charge.

  Is it possible for two negative charges to attract each ss*-x45u r eyhother?

  Is it possible for a positi*u6;shnt ioasqk ,x /k5te1n/ve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of s,fhxv8 +y vg8.anzeg8ilk. During the process the glass rod acquires a pgy8 e ng+8x8z.vhva,fositive charge and the silk

  A proton carries a

  The model of the atolf3q.:gz uplm a5c.t / jfm7i8m shows a

  A neutral atom always h:yb 5 hetwn(drk 7-4aoas

  An atom has more electrons than p bgg-)lffa+sov 5ku0 4rotons. The atom is

  Materials in which the elec/g5j uddq v*av:(cnf))lv0 b ptrons are bound very tightly to the nuclei are referred )dc :f g (v5/a*vvn0d)bquljpto as

  Materials in which the electrons are bound very loosely to the nucrs:4y.aiv4 y -us; vvocdpffm 5//t 4clei and can move about freely wu.mc4cast;s dy/ v 4of5 vir4v:-pyf/ ithin the material are referred to as

  A negatively charged rod is brought near one enehm km 7f9azhl +gs1h)8ty(t0 d of an uncharged metal bar. The end of the metal bar farthest from the charged rod wilt(7+1ayfh9mlzmkh seth0 g )8l be charged

  Sphere A carries a net positive charge, anc8t t 9vjgp(9c jr*4 z7h*yexzd sphere B is neutral. They are placed nez7yrg*(jc zct jvpx9 4*9hte8ar 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 electros.hf7a.apyv-1daq6 pqfhig z*,xam r 3jc *)8 dcope positively?

  An originally neutral electroscope is brty y:z6t, jl)riefly touched with a positively charged glass rod. The ele j6tytz ly,:r)ctroscope

  An originally neutral electroscope is grounded b 1ekr 6 3r1ijlgfr,:seriefly while a positively charged glas1 3ijgrfe k,rer6ls: 1s rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral elec *td)lp lxvg/)9,vrs z.v 4vggtroscope, and the leaves separate. Then a negative object is brought near the electroscope, .)l/rtgvdgx,lvgz 4 *p vs)v9 but does not touch it. What happens to the leaves?

  A large negatively charged ob4q6xsxlqz f, 1ject 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 firstqx1 6 l4qfxzs, 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 Coulomb constantn ,e6-kyh uox t41x/ji $k$, which appears in Coulomb's law?

  Two charged objects are separated by a disw; ezjh:0f/3vr:y njs/h- o0y q7 mznvtance d. The first charge is larger in magnitude than fnv/m7 ;0zhn3j:yqjwv :s0y /o-ezrh the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eacpx6l:pf0h)07kgqp ef 5 hgig0h ot:pexfi5g0hg7 00ppqk f lh)g6her on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract 8l0 ouj,:c /dc ;p uu.8yro:j j4oo7pvan1qhkeach other with a certain force. If the charges on both objects are doubled with7n1 ;, jhupy odoq:ocrcj vuu0/ l .ajp8:ko84 no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forc0s 0atuqdsy83z 9h/2e,nffti as; 1y fes of F on each other. If the cht su0yft9d 0fse ;1 qsfi/ 23a8nzy,haarges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What s3h4fa: mmj7g happens to the force between 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 tmgmj4 : f7s3aho

  An electron and a proton are separated by a distance ofu0gtnao)7+lk,e k a+n 1.0 m. What happens to the magnitudnte), a l on+kg0u+k7ae of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh kqg3;nfg fo8b7hfm.+at happens to the magnitude of the force on t ; g3mbokfnfg+7h f8q.he first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance oe apxy y lui: +yxvs41y/6 hx89.vr4tgf 1.0 m. What happens to the size of the force on the proton if the eleh9y ap lu.48vyx/exr6ty :y4v +ix1gsctron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a l7wf48vmb9 m esh/2wrsquare. When 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 the square's center. Nowrm hf /m24w9b e7l8swv, 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 +Q9n ll3tuk;k 2.l r3cmz9 vtqju7mj0- e*,rwiw is placed 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 acts on it. What is the magnitude of the force that acts on the center charge due to a third ulwkurr.237mq n90j -mt kl3 w;zljv c9te*,icharge of +Q placed at one of the other vertices?

  Which of the following is not a vector. ;gwem;6pz;hn cwt+3 , akgkt?

  At twice the distance from a point charge, the strength of the electrge:(+r7yo b jyic field

  Is it possible to have a zero electric field va;az./ fyc qpncz mjrf +vv.7;6lue between a negative and positive charge along the line joiningvzyfq/pvc+z .; a 7.;6jfmnrc the two charges?

  Is it possible to have a zero electric field value between two positiv r3ji: t9)-l./ rw3hp wylv ofp itxa7jai.*c9e charges aljp3h3. )/i7l rv9r :.w iaoy*i-ttcfw 9paxljong the line joining the two charges?

  Electric field lines near psitiuaj3 vi52nt(6 vzl .wjp+4fphve point charges

  The electric field sh,xr8i ( ( an*smasd9tgown

  Can electric field lines intersect lfmf;)j c)v499arvxvhv0np - in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elect*ltmugqk3u)gslf5rl j:/e3 1 ric fi tlg *fsq j1ugl:/mlrk3 53)ueeld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamete8bs 32gju , fpwfku(3ivk6f5drs are each given the same charge, the electric field (E) midway between the center and the sur,2b kd6kff fuu jwg pv(s3i385face is

  A cubic block of aluminum rests on a wooden table n-:s u):+zpfm bs s*ztin a region where a uniform electric field is directed straight upward. What can be said concerning th+ b:fst: -znusm) *psze charge on the block's top surface?

  If a conductor is in electrostatic equilibrxpiw2hbo1 8w(b rny4ie10 la9ium near an electric charge

  A positive point charge is enclosed in a hollow metallic k :bnj)rwv +h(sphere that is grounded(: rhvjkw+ nb). As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducte3avtc6* ej16h.vjoy yx5.a e ors in static equilibrium.

State Gauss's law.

  The charge carried by49) c;mqqjqdvg0bka: n +*i.pnexk 2 f one 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 charge of +2.00 mC. How many more protons than elekfyo2;m;b nh 0n81 v ynkkp*f:ctrons does this piecef;mhk n10y*v:n8; 2yknpof kb of plastic have?

  What is the charge on 1 kg o.vqqss9 o nim)1: v49xxtsei:cdo3 f6f protons?

  An atomic nucleus has a charge p6t0fa v+mfnecqr2.tn v ,rc/.t1 -im 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 values of 2.0 and -4.0c7jtdsor0+ m 9 mC, respective7s0 m9t +rdocjly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge,9n .b:zqc:r; uctmc)x and the force between them is 1.0 N. What is the magnitude ofcb;:xmq)tncz: c u9. r the second charge?

  Two 1.0-C charges have a force betwee1luf z(k52m/)g nsc d *nyasw-n them of 1.0 N. How far apart are they?

  The force between a s (q5rw og)s3yi0w) d1nnz5 lx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experfw:5hj pq;(l0p3du meience a 1.0-N force. If they are moved to a new separation of 8.w3 m: epud(fp jh0l;q50 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placedi -p1rjp ,+ko1) wgmcj9bz-hd on the x-axis. The first charge is hbw+k1- )z, dr im-pp9j coj1gat 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 are o mic2*u6b .:e3sth fqplaced 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 atq.6o u*msbihec 2:t3f 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 za53afe)pq q0ebu1n , located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m.a5pezqu1 a, n0 efbq)3 What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of ,n3kxiqbr9e9g- cyw)0 mrvq9: pk+ g4ptdbm/ 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 magni /bt0y-p b pg3d94qkm rix,g 9enkcwv9+:rq m)tude 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); Q21h xmx4kuj 9pd93ih0s = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudemhsk1iuxh0dj94x93 p 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 zxsa2wk 3k8w*:: qs2n 0z)uvb f+naki= 5.0 nC is at (0, 0). What is the dir f kzw+bz i)2s20uwq : a3nakns:k8vx*ection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral mvj1rar al;92 triangle which measures 30 cm on a side. Whaaavr l9 2r1mj;t is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are b74nqz q9ov,s separated by 3.0 m. At what point, on a line between the two charges, would it be possn4 9bo zqv7q,sible to 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 +ghqe5w -b/ d)b9.0-C charge is at x = 4.0 m. Where on the x-axis can a t eb-g )dhw5bq/hird 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. nao,:v id3vo7vexo+7 Where can a tva ,oeov3d+n7vxio: 7 hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totacxr h0l *lh;pu s;,i6bl 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 attraction of 85s mp dpg/hvvxkm9t6,k i2j(a fixed proton some distance above it. How far above the electron is the proti,ks5kt9/dvv2mhj6 p x8(gm pon?

  Two 0.20-g metal spheres are hung from a commo 4lm4p -oa+ st,cq3mlln point by nonconducting threads which are 30 cm long. Botcs+3l4olq amp4 ml-t,h are given 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 magnitude of thdg,5jm2. sucj* qf dv4e electric field at a distance of 1.0 m from the j, c4vm.5u* 2qdfjdgs nucleus?

  What are the magnitude and direction of the electric fiel/: rvd eudvs8*d j*fe;d at a distance of 1.50 m from a 50.0-nC vr* edv:u*df8;/ s edj charge?

  A 5.0-C charge is 10 m from a small test charge. What is the matny/26o(36enfj 3fsfgmz-l r gnitude of the electric field at the location of the tes6 ( z/2rfent-gfsnmo3j3lf y6 t charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction4q z vxb9qp: z;;nql.f of the eleq z;fnv : bq9;lqz.px4ctric field?

  A 5.0-C charge is 10 h,: n-t8f 2(9dg s leeuf+zcqhm from a small test charge. What is the magnitude of the force experienced by a 1.0 nC chanct- shzq9ug ffe d(, h:+82lerge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separa2 rg1*/ zmbvuhted by a distance of 4.0 m. What is the electric field at a point midway bet/21brg* zhum vween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metm,9 v tuge;m*eer stick and a -4.0 mC charge is placed at the 50 cm markv9 ;* emut,gme. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCf781qn2,goab6w ctlqgwb 5 ug2 39bcq charge is placed at the 50 cm mark. At what point on a line joining the two charges is the e9175ggc 2q28t ,awgb c f3oulb 6bqnwqlectric field zero?

  Two point charges of +3.0 mC awii1t,8 bfyg2 nd -7.0 mC are placed at x = 0 and x = 0.20 m. What is thbw1,8 iifgty2 e magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of si350x saznb/44 :vg7it bls tmhde 0.50 m. The last corner is oc x0t5/zlh tgs3:in b4sbmva47cupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which7xm2 p c;e4h1p98he(mzfkllg is 1.0 m on a side. Charges are placed at the corners of t 1fg;8 m4ezp7ke9 c(llh2 hpmxhe 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unifor 4bhrhav9l r4e6 .oy5zm electric field. What is the bho yr4 h6evl4a9.z5r magnitude of this electric field?

  A particle with a charge of 4.0 mC7(y(9n13e gngq wx gjc 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 in an electric v3 qgocv/ 3cti 3e1;ur) x0dllfield of 6000 N/C pointing dvx3/cl 313 i)er;cqu0tvlog downward. What charge must 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 placed nn, ea)c.c;o0nqi0nww- d7isinside a uniform electric field, and is suspended against the force of gravity. What are th-0.)snow7acn i neni,qd w;0ce magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2l9ydtxob 69/x .0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surbxl6 td9 y/9xoface?

  A metal sphere of radius 2.0 cm carries a chot:t:u ,ffj3j(yh2v3vz :ukvarge of 3.0 mC. What is the electric field 6.0 cm from thku,f(:2vzvof : jvy 33hjtt: ue center of the sphere?