State the law of conservation of electrihqt v*kv; ks:0w7 3zosc charge.

  Is it possible for two negative:i s hqfgfv)tyw6:c7gk97o w6 charges to attract each other?

  Is it possible for a positive and a nd ;0nu*lvcty+ h(ea- degative charge to attract each other?

  A glass rod is rubbed with a piece of silk qq6a .qhsyc:08rmd6lsb0 3 vy. During the process the glass rod acquires a positives 6y b0 lcya6.8shq3:vmr qq0d charge and the silk

  A proton carries a

  The model of the atom shok.9u-j npti/ rws a

  A neutral atom alwaysi4wr,8fjxj d3 has

  An atom has more electrons than protons. The a6i*z/q l2fxt n,zxv b,tom is

  Materials in which the electrons are bound very tightly to the nuclei are re7mh -)4heii9 e vspz5k3 yls/qferred to avls/my)zq3h7 ikehi4 e 9p 5s-s

  Materials in which the electrons are bound very loosely to the nuclei and ,34jp+gww e9tl)gescps u3(y can move about freely within the material are r)wwg,+ y3s g4e9t j(3pcsluepeferred to as

  A negatively charged rod is brougx*znqgi1ed9kls*kn) x n. (1mht near one end of an uncharged metal bar. The end of the metal bar fxnl n(gd.k 1z*9n imskx) 1*qearthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B ih.w1tepc9 ou:tt0y 6r s neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wi.9 :y ohtpwte0tur1c6 th a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivejq0+ve4b6pj2/q-r v/c r ri rkly?

  An originally neutral electroscope is briefly touched with a positively chargeu ,y8vu;ys9,po9y rh zd glass rod. The electroscopy, h9pv u,8yy9z;usr oe

  An originally neutral electroscope is grounded briefly while a positz.1g st of;rgp)vv8 s9ively charged glass rod is held near it. After the glas.g tr;gpozv81s v)f9ss rod is removed, the electroscope

  A positive object toucbbxp1c59h p-b:1 f(p3erf zywhes a neutral electroscope, and the leaves separate. Then a negatibfw1 r( b p zppf1b-9y:xh53ecve object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged obj6 stquy,3 anci/u qga64 0og1rect 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 pathosqc1 gntaau,uqi06r4 6 3g y/ 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 Cy1uyw :m 4am:ooulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are se:yb(z tn:*jb mparated by a distance d. The first charge is larger in magnitude thannbz*:t: bym( j the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eac nwv;gv 85tqq;h other on an insulvqgq;t;w8vn 5 ated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other witiozi:6zo,2 c/ty org 0:xo/c ih a certain force. If the charges on both objects are doubled with no change in separation,ytooi zg: ci,:0i2r/ox/o6 zc the force between them

  Two charges are separated by a distance d and exert mutual attractive forces r t e;)akcz49jof F on each other. If the charges are k4r9)jazt c;eseparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whatwao*lue+q*bh go5( 0h happens to the force between them if one charge is doubled, the other charge is tripled, and b +aq5(loo*h0 hg* weuthe 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 separd f;0h )wly /v-ujhsm3ated by a distance of 1.0 m. What happens to the magnitude of the force on the protonl)m j yvsdhh/wu0 ;f-3 if a second electron is placed next to the first electron?

  An electron and a proton are uprj z zdgkqi7/+,2y96ffdwnez/1- qseparated 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 pif/1kydu -qz,d7/ ngzr62e 9fz +q wjnext to the proton?

  An electron and a proton are separatedq/ ,bn8 q b/wyebi3xj* by a distance of 1.0 m. What happens to the size of the force on the proton if the electronn8,3*yb/q jb x/eqiwb is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a h t hftqw24l.clso4)7 me-ley5+f(zwsquare. 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 positi42)tes-w.oml +h ef7cl4 q5 yhzwftl(ve 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 a)oeykwip7q pl 84h d6u 4utog( -i9-gis 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 charge of +Q placed at one of the other vertice9giuo)ph447-p( elukgqo 8di 6tayw- s?

  Which of the following is not5i,+(hmpcnz3kr d3h p a vector?

  At twice the distance from a point charge, the strength of the electric8zaaln5, n4h;: yx qhy field

  Is it possible to have a h) s) nyx,vl5bzero electric field value between a negative and positive charge along the line joinv,ys5b) nlx)h ing the two charges?

  Is it possible to have a zero electric field value between yoc9czs zns8+.7 hlm 9two positive charges along the line jy.sz9szcmlo8 n7h 9+ coining the two charges?

  Electric field lines near psitiv2y vrg s/b3.h/izv fy)e point charges

  The electric field s rx:racy75q*7aa3wd5 p9 qo0env alz)hown

  Can electric field lines intersect in free sp.;;opm4baz fir5f9 5bsug 7 ulace?

  A solid block of metal in electrostatic equilibrium is placed in a uni3 /sgx+wewrh7,/xrxi fg;y0hform electric field. Give a statement concerning the rf 0; eirx3/7 hx/ygwxsh,w+gelectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ar/z. ab+.:c m2pbxnuime each given the same charge, the electric field (E) midway between the center and the surfazx2/.bnum .bciam :+p ce is

  A cubic block of aluminuw( xxaq9y*o9bll; v q3m rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said conc*9xo llbvw3q( x9a;qy erning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charg*w)za9u;z 3 ls yua:vcfucy m(6 a8)xye

  A positive point charge is enclosed in a hollow metallic sphere that is6 gv2qcx e**zxjcpl/0tg3 - ar groundedc/l**06xq 23 txe-jgcz gravp. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertie /)pdwh4r3pl w/y 1j5e;fiwzes of conductors in static equilibrium.

State Gauss's law.

  The charge carried by 38xhz+f/ vdn*dptgycv loz+ ;k4 ecr86-/mc 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 +2.0o qia0zd +9on 7-psv6n0 mC. How many more protons than electronn +o0o-zvs i n6p7qad9s does this piece of plastic have?

  What is the charge on 1 kg ofkma-wpz,6/i cv d8i1;fin 3vf protons?

  An atomic nucleus has a charge ui.tc,ou 7 i7:jrs,atof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.bw(d:,s 0oumn 5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of 0 owdu(ns,m:b the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the foreag w ab27 :ld:ia,7mwce between them is 1.0 N. What is the magnitude of the seco,w7b w:ae7aaidm2lg: nd charge?

  Two 1.0-C charges have a for z2gka8z 3hk5pce between them of 1.0 N. How far apart are they?

  The force between a 0vhw9h ,bpzqvf s* 0f8$30 \; mC$ 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-N force. Ixzg/e ;g+t1 v /hpmu:nf they are moved to a new separation of 8.0puvgm/e/+nz :h1tg ; x cm, what is the electric force between them?

  Three identical point charge9l(m 1qmo; 6pli 8kco/7wr j)7utqqhas of 2.0 mC are placed 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. What are the magnitude and direction of the electro/7l( 87 iawk qm9q hopl;t6mq o1)crujstatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placedg70hyck 2q5pbah4r q0 at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 c4b qr5hyh7 0kq0g2cpa m 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 followec+9jze0 s dyvu 9)bo+r)x9j )6dxk reing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 =z)ex s dj))dxob9ev699y+ uk 0+ercrj -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 5 nn gm 5 ywef9kwg,*3p-upw:ssquare, and a second point charge of -Q is placed at the upper-left corner. It is observed that an elecu* nekng5m9p-yw s5pgf: w,w 3trostatic 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 n4bd0 1m:l nm ewwfdif ;i+l;c;C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wh 1m+wme f;b;wi:fnic4 0d;dllat is the magnitude 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 = 5.0 nC is q 5 37dnkg;reiat (0, 0). What is the direction of the net n7;5kdqr gei3 force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pl1eni ,l nmhp,ujg 0s; 5i7ohi/z:up- maced at the vertices of an equilateral triangle which measures 30 cm o0;z/ gi :h jloi npip,-u5u1mm ns,7ehn a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges ofx sa1olhxhd-:t zp50 2zkh3* n +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 -Q such that the electrostatic force acting on - a1zxtdx *2 0phkh3:ohzls 5nit would be zero?

  A +3.0-C charge is at tgm/o1rc;+e smhe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge c;gs/ m r+e1mobe placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x lf +8yynroe-mo)m6lw fk7 /l)= 2a. Where can a third positive charge +q be pe w)8 lylrk)lymn76f/-o mof+laced so that the force on it is zero?

  A copper penny has a mass of 3.u ;9+v.0si bc)y q3ubym9qi ii0 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 bfnr; 571kai :tzf5)xishg*j sy the attraction of a fixed protoir *a1;ns7i gjft:)5zxk5h sfn some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheresce20tpv4 i 0-.ociv yw are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the c o0 i-.0vvpi4 2ecywtelectrostatic 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 chaotq)d6l /+mzqrge of +40e. What is the magnitude of the electric field at a dqqt/+zl ) om6distance of 1.0 m from the nucleus?

  What are the magnitude an9q *g4rzy5o 9n2ng fqpd direction of the electric field at a distance of 1.50 m from a 50.0-nC q *9zr nng5oq2gyf94pcharge?

  A 5.0-C charge is 10 m 9nw rhg)a13q rnxe* a:from a small test charge. What is the magnitude of the electric fiel whx*r1agea9 nrnq3): d at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whalqf5yt. r ;.hbt is the direction of the e . ;.q5lrtyhfblectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the ppl6opna a60i u2e/w9magnitude of the force experienced by a 1.0 nC charge placed at the location of th6w96eoap0aupnil / 2pe test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance on s,vn eg0p53)ko(qpsf 4.0 m. What is the electric field at a point mngv5) 3sp(, okpsen0qidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm ma +. ktieqznckf6g*i /+rk of a meter stick and a -4.0 mC charge is i6 czki+ qge+.t /f*knplaced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placew/ el1hhdudy 9/0i9vmd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what poinmhd9v//hw9ue10d liy t on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.vrvlpsig6p 6q0)e 7 v:vbto.: 0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude o:v)reb:q6tpos p6.ivl vv 7g0f the electric field at the point midway between them?

  Three 3.0 mC charges are at thez :2 a-2eqi8dw*oe g1sw5 dmau three corners of a square of side 0.50 m. The last corner iem2aguad*zeod2-w5 q8ws:1is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charge;h.l1oma )/i vqkg1fys are placed at the corners of the square as follows: +4.0 mC at ; a/o1gfhk.q)imy1 lv (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 ofdfe m7 0:x.xau 5.0 mC when it is placed in a uniform electric field. What is the magnitude of theuxfx: . a70dmis electric field?

  A particle with a charge of 4.0 mC haazeql(/x-oh8z *wia.s 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 fieb1jjgdqtzjc-ws ye 8v5w 81t 6(v14 njld of 6000 N/C pointing downwng6jj e11j 8-t4tbs5 vc 1(ywzjdvq8ward. 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 placedb6g-dk)csezwzl) )ac 7w7 l.g inside a uniform electric field, and is suspended against the force of6c blwkzd ).w)c7geag-)l7 sz gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mCls yw1ta(5k7ck 86 zvw. What is the magnitude of the electric field 5.0 cm from8ykkl c t6(szvwa 175w the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ele bf a)xf,b+ibqh1 q.42hjy 8prctric field j 1b4 ry,f q2qabxifp8.b+hh )6.0 cm from the center of the sphere?