State the law of conservation ofxk50- uvv/ mpf electric charge.

  Is it possible for two negative charges to attract each ot3h8,8b8 xaumtf,2w lcwt q6zt5)n ikzher?

  Is it possible for a positive and a nenj/s(qon *1qhf cf,9q gative charge to attract each other?

  A glass rod is rubbed with a piece of silaz wcdc8;u5 4t):yty jk. During the process the glass rod acqdyc :wut;c)8j5a 4 tzyuires a positive charge and the silk

  A proton carries a

  The model of the atom shows mo i(sd;1z xc1a

  A neutral atom always ha g3qkbbpi)o,k13t v1es

  An atom has more electrons than protons. The atwn*y7u tz-.zbu9*c cm om is

  Materials in which the electroni:xtm6 g,qm/v s are bound very tightly to the nuclei are referred toqm, 6 mtx:vg/i as

  Materials in which the electrons4rr ms)v sx3jl z+0n/b5btl ;o are bound very loosely to the nuclei and can move about freely within the matervbr m 0/)+nozjtrslls;b 45x3ial are referred to as

  A negatively charged rod is bro,/ucnfg;8)gar r ijn 8ught near one end of an uncharged metal bar. The end o /gc ;i88rfua) jgn,rnf the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, , xinmjwwzs .+3zercd4t)k3,and sphere B is neutral. They are placed near each other on an insulatedxrcjie s4t.w,z,n)3k3m wdz + table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charge/qu n 3gu8bzw, ,kqdq+d rod charge an electroscope positively?

  An originally neutral electroscope is briefly touc, sgks8a+ 9m-0qh hycehed with a positively charged glass rod. The electroamgsq8h +-e yh0k9c,sscope

  An originally neutral electroscope is grounded briefly while a positively cha bcr3j/ -pl oyfh3 .hxjwb3e9*rged glass rod is held near it. After the glass rod is remo3hy3/ b*er lbop fw-j 3c.j9hxved, the electroscope

  A positive object touches a neutral electroscope, and the leaves separrrk)+*csg /jg ate. Then a negative object is brought near the electrsr*j)gr/g +kc oscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulas1e; ulo0 g7srted 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 firss u7 gsoler1;0t 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 Coue;n+ s6vaohxs/2 hhk:lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are selq5e :v.+qtq pp,4 mkkparated by a distance d. The first charge is larger i p5qqk+lvt 4.:mq pk,en magnitude than the second charge.

  Sphere A carries a net chargeg, ywxr 6,./1czjfw 4unj k-vq and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between j,g , 1qf6r-yx nk.uvwwc4/jzthem?

  Two charged objects attract each other with a certain 2 cwrbo6l/- qw j-iva*s(sng b2j5e:lforce. If the charges on both objects are doubled with no change in separationc vo wl(- 2srj -labw/jgen:i *b2q65s, the force between them

  Two charges are separated by -zqjs0k 8s,ni4h0rajt f.i,t a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a dista-hj.iit 00tf z jk4nr ,a,s8sqnce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens dz-:;4sft bvn to the force between them iftd -zf v:;snb4 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 proton8n ayv8dw2- gj are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if ajw8 dvy8 -n2ga second electron is placed next to the first electron?

  An electron and a proton arexb:q/r t ehrnw.w;y5w6naq3- separated by a distance of 1.0 m. What happens to the magnitude of the forcq6w:q x-n;b5n e./rtwh wr3aye on the first 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 h8j/i9z1xmk6f l c 5 ww+cmmfk +xbwosp)*(;jy appens to the size of the force on the proton if the elect)ixy+kw9xz/ sl*+cw(k j1 mw;pb8m6j fo fmc5ron is moved 0.50 m closer to the proton?

  A point charge of +Q is placedjv.u+-su dto u./kt 54e1 k1nd;wxgmw at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an elet1u14dujdme+kwo-g5.st; x/u n w . kvctrostatic 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 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 centroid ofbt9 k ca3 joa*p0u85jc 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 actsp 9c 58*cojut3kja ab0 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 ve*p.9 bliqp2yy ctor?

  At twice the distance from a point charge, the strength of the electric fie .)gx,),dczw hllw g9n5yn4zl ld

  Is it possible to hatg/ 8307jz1y hxkbcnn ve a zero electric field value between a negative and positive charge along the line joining the two cha1hcn txk 3n y/7g0bj8zrges?

  Is it possible to have wpg1p0c -tt w21 d:sada zero electric field value between two positive charges along t0ag dt1ps w t:2cd-1pwhe line joining the two charges?

  Electric field lines near psiti4rz0k nxp2+6knd ri4nve point charges

  The electric field showd0v nsh8 :c 6.sy0wyxon

  Can electric field lines inteww;. e09hd /zrgi 6hffrsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uni)jbm 2h699q0*ysdeb(t mxhvgform electric field. Give a statement concerning the electric field in the block's is9(mj*0h)yb 6 vmgq9bx2ed thnterior.

  If a solid metal sphere and a hollow metal sgl 8l,ymct8/ dphere of equal diameters are each given the same charglgcy/l8m ,8tde, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table m3spr lsx 44o9un ,(ufin a region where a uniform electric field is directed straight upward. Wspms49f4,luo(3nr uxhat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nee *,qzf2nfe9 oar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gro:r hb wb56t3z.bl ; ujqm4vc.aunded. As compared to the case without the hollow sphere, the electric field r34q6jc5;w:m balbvzb h.. tu at a point directly above the hollow sphere has

State three properties 3eyfi2zh3l.o p7r a,k of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elmt1d dmlo3 (xls3+m c po:rxm,4h.v t,v3j+miectron 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 cng -m1 31qijhq :bsunxat .77tharge of +2.00 mC. How many more protons than electrotqj- gna ubx im.3q1 7tn1:7shns does this piece of plastic have?

  What is the charge on 1 kg of protc7hfmm8. . o8u,g tn1+wmdg1yi4cvxi ons?

  An atomic nucleus has a charge/qr;s xdnfczyr(8o6 2 of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, se/iyumdk io3( nl-f0) xparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between theiil( /-mkd fx0u3) oynm?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.x 6 8 h** lykn*0ozx8slpmdul.0 N. What is the ma0z 6*k.pll*l*y8xu8 dhonsxm gnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. k 7lvaeq s,i( e+l:7z37kzmwj2cgh0d How far apart are they?

  The force between a 0y*h-ta: a tnac( -zoo$30 \; mC$ 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-Ncu4ydm (1zn w6l1nf*x force. If they are moved to a new separation of 8.0 cm, what is the electric force between t1zufc6 xn(w4 yd m*1lnhem?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first ch:za*b-/n si+kfv ze fy+3/7ow.qv pwjarge 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 w3b.kay+ zjv io/q /vz*e nswp7:ff+- the charge at the origin?

  Three point charges are placed on thd5pku,zol d+x/+ ,pcee 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 magnitude and direction of td+zkpel/,5upd,+ ocx he electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posi bffbwt,:5 4lrpkgo;2)kia i *2mel,stions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC a, t2 rkg)bw:, flsm;p4a* 52 fikoeiblt 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 i ebi,a* rg i) vsw:7.-frfg1ots placed at the center of 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.ibrewva) :1g7- tg offi,s*r 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); Q3 = 5t9u59zr k.63xewv xi -g/jr ox.0 nC is at (0, 0). What is the magnitude /vrg5jxi9.ktx-u wx oe63r z9of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0. v: knko 72q*m5kyzbw.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is th2 5 kqwzky7*vomn:b.k e direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCq)*zlh;iyqbs )7 ;oo nh4lnu / are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fls) o/*hbyol4hz ni;7q ;uqn) orce which acts on any one of the charges?

  Consider point charges of +Q 2pk-(n)otpjsyh +3un 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 jop) +tk3hy-n p(us2n charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at tj*uevr(7yq 3 to,i*-x wx9 cnhhe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force ou39q yhwx, -(x7icjnot*rev*n it is zero?

  Charge +2q is placed at the origin and charge -q is placed + grmyq53j e 2he(hu-cat x = 2a. Where can a third positive charge +q be placed so that the force on i+e (-y 3 hcu5hegr2qmjt is zero?

  A copper penny has a mass of 3.0 g.w2bru,n-+i j9t+ge pt+(c-p *abdhpu 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 by the attraction of a fixekb*lw;,vf h4rd proton some distance above it. How far above the electron,4f*rh klwv; b is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads w vokea7jpkc0tb+g+ 32hich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces t+ k+pvt k7ejg0abo32c hem apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a yw/;q/ bqk)sae)z 8u afxy(3pcharge of +40e. What is the magnitude of the electric field at a distance oa ;w ))kq/8(se3qz/uxbpfa yyf 1.0 m from the nucleus?

  What are the magnitude qdw r 3ryp*9o9 ew,5ghand direction of the electric field at a distance of 1.50 m from a 5qd r9why3peg5r9,*ow 0.0-nC charge?

  A 5.0-C charge is 10 m from a small ,2 c ns/fz3jwjtest charge. What is the magnitude of the electric field at the location jw23zsjc,/ nf of the test charge?

  A 5.0-C charge is 10 m from ac:*b ddy,wa b-t(pkm3 small test charge. What is the direction of the electric (wdap btc*ky3bd,m:- field?

  A 5.0-C charge is 10 m fro9 s k13v2nk6sn emfm,7*xgcfwlf6-r bl ws/ c(m a small test charge. What is the magnitude of the force experienced by a 1.0 nC charc,-e fffwv 2k6nwk6s1x cn (lmg/ 7ms3s r*b9lge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of x;;e6 e (p+ws fl4odbfe90att 4.0 m. What is the electric field at a point midway between the two char+ eab94lo (0 fdspf6e;tx;ewtges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic+he -(g; xr a( to5,jx.byjbfkk and a -4.0 mC charge is placed at the 50 cm mark. Wh;-f txj b j,5xgk+yoa(.be rh(at is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mgiath/o q/4m+w+p8 e dklsl91 ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joihl4 sa+to+weq8l1/g k /p mi9dning the two charges is the electric field zero?

  Two point charges of +3.0 m vex e.(c7b k:kwx/p)eC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midxc/ :p. eek(vebk7)w xway between them?

  Three 3.0 mC charges ; 1ld,x rgi9fu0f4ie68gw v nqare at the three 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 center of the sif0;d lqg6,e819 fiv g xn4ruwquare.

  Consider a square whicq-jxmf (kg5hub, pl );+yxv-sw w do-9g4gr2 mh 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 (( br dm)j9g g-f42hm, kv pqwx-u g5los;+wy-x1, 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 ofmh5zw *6/ykxb vi .nh- 5.0 mC when it is placed in a uniform electric field. What is the magni-bk5h 6ynw*/ xh v.mzitude of this electric field?

  A particle with a charge of 4.0 mC hazu4h;y, g y7zrl3g ab1s 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 field )01zx jz*nv ff*aidxwfi ; 31g k/a(fuof 6000 N/C pointing downward. What charge must be p0 zig1z u)jf; 31n(ia*kxfvdff/ w x*alaced on the ball for it to be suspended?

  A foam ball of mass 0.1501roww 8z:au j3 g carries a charge of -2.00 nC. The ball is placed inside a uni aj8w:3ruzw 1oform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What isuqil5my2* n 6a the magnitude of the em 65yq*nu2 ilalectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electribe:d9mfe*,hon cn7hu9 n :/ cmc field 6.0 cm from the center ocb,/*h::cmome7n und ehn9 9ff the sphere?