State the law of conservatiovy6 dhj o1vwni.jft ah :-d,)-;p wn2ln of electric charge.

  Is it possible for two negative charges to attract each other?scxg 7ui(33 uypp6um.

  Is it possible for a positive and dpuu/)4u3f*pga. cx r a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. r4bt3 m1xt g37hoc lkyp6w*r1 During the process the glass rod acquires 1hbwt 3mytr3 g colkx71p4r *6a positive charge and the silk

  A proton carries a

  The model of the atom sho(/djjb sq9. irws a

  A neutral atom always 4*enpp:o jo4x has

  An atom has more electrons tha(1awpd)hq f3 mn protons. The atom is

  Materials in which the electrons are bound very tightly to the nucle bbe8t6hw9 s(y ;2kfini are referred to asyisn kb29b;e8 fhw(t6

  Materials in which the electronde*8 el7+qx4wn)bge xs are bound very loosely to the nuclei and can move about freely within the material ar )wexe xl8 ne*+4q7dbge referred to as

  A negatively charged rod is brought near one end of a/k bgpse- zb:g2x1v9.pd8nmnn uncharged metal bar. The enbv2mnxz9dg.p8 1k/ spb:n -ged of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chart;nqe7vpxo3 v ;w:318g ihoa zv) lck:ge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement38oe1;qgv: ; o3ptaz:v)w v 7ic nkxhl is correct?

  How can a negatively charged rod charge an electroscope1 uzqa.rx y+sw+yt8xr0,hz3l positively?

  An originally neutral electroscope is briefly yv0c+kf75x c* gis0wd e:ye)c touched with a positively charged glass rod. xv)cs0yy*kcdi 0e +wcf5 :e7gThe electroscope

  An originally neutral electroscope is grounded briz1jcpekq;o30oi+:2kj d ai3 e efly while a positively charged glass rod is held near it. After the 32ipejd+ze:oj a 3 10o;cki qkglass rod is removed, the electroscope

  A positive object touches a neutral eleco1wuhm ry,98vd7: cg dnk/m.ytroscope, and the leaves separate. Then a negative object is brought near the electroscope, but doeo,8d :wmkcg9. /hny7yrmdu v1 s not touch it. What happens to the leaves?

  A large negatively charg+ov qspwz (6+tda.lc2ed object 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 first ball, strikes the first balc.ld2sa+ 6qzp tw+v (ol, 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 c 9fmqk*d +t+econstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge 24eu5xy+hrug tyn22ris larger in magnitude than the seconh 2y5nuxe4y+ tu2 r2rgd charge.

  Sphere A carries a net charge and xsew 4 2n-g;khjsw* j, jse0 f)yg0vac8v*r )zsphere B is neutral. They are placed near each other on an insulated table. Which statement b0)evvyk*g2erw)xjc, g s f; - ass8 *h4njjw0zest describes the electrostatic force between them?

  Two charged objects attract ea 7i il8 2l-zun/m*lkltch other with a certain force. If the charges on both objects are doubled with no change in separation, the forci 78lu zil -2lm/ktn*le between them

  Two charges are separated by a distance d and exert mutual attractive forc4x 02 hbbyx;g(vc*jjpes of F on each other. If the(gh xxpvb*;2bjc0 4yj charges 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 happw)ea9g 9-gz;f ngmom. e cc52oens 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 eqe.mwg; mf2eggo o9z- cna5c) 9ual to

  An electron and a proton are separated by a distac j 7msgdn0h69nce of 1.0 m. What happens to the magnitude of the force on thegjn d97m6h c0s 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. What hapu-a3y fyc. qqt by;3h0pens to the magnitude of the force on the first electron if a second electron is placed next tyf-y3q cta;0b 3.uq hyo the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happenj f1i.:2 wlkt4r;rkrfs to the size of the force on the proton if the electron i:f12f wkil .rr;rk4 jts moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center ofod9d29 z;uzw8htv 6o/ 9rxv yfkdru2. a square. 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. Now, identical r vd2z t.9od2;8ufvw y d9xo6ur/k9zhcharges 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 of an equilateral 4k dc8uaq)g-rtriangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on kg-8c4 qua)drit. 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 n+pchxf3,yc ;+rq yg 1not a vector?

  At twice the distance from a point charge, the strength of the electrl x4v qv4)u0vwd+lgmd(i3 5cpic field

  Is it possible to have a zero electric field value between a negative and positi): w60*vf0iw z7bwr o.inzgfrve charge along tz:bvz w0o*rni .)w0wi6gf7frhe line joining the two charges?

  Is it possible to have a zero electric field valu fl4tj;y1t 1weotwo7h- t cij-/n.rg3e between two positive charges along the line joint 43c.e--t1yhgrtlw;t 1wn 7f ij/ojoing the two charges?

  Electric field lines near pv;ldf8g,hfdn 5w: am2sitive point charges

  The electric field show 2uhowaoel:q(w85wf7n

  Can electric field lie5g 8jqva+5x (bj5ha bnes intersect in free space?

  A solid block of metal in electrostatic equilibriumsh4jw, h0p pj0 is placed in a uniform electric field. Give p4hj jpws,0h0a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametersiqx8*k;wo+ll om)beu :z,my / are each given the sam+l) ;iuloymx:mw/* ebq zo 8k,e charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminherc t: 0 k.n virydt)3jw/k/k6ik(9 fum rests on a wooden table in a region where a uniform electric field is dirf t rce6kdj) ni vit(:k/ykhw9k/3.0r ected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrvwbufd:bc8-) vsi7 t4ostatic equilibrium near an electric charge

  A positive point charge is enclosed in a ho2z u)pr.xa chd,eqk18q e7 tw,llow metallic sphere that is grounded. As comparht wa1p,uk ,ed8q zexq2.rc7)ed to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conn.3oa6 w8s1ic 6vmehr q: mq1cductors in static equilibrium.

State Gauss's law.

  The charge carried by one elecik( dls 4qem/iiah1+.tron 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 0 qw; gif0g p44qgot*s(+kws (3wptkymany more protons than electrons does this piecewp*q4gg((wiw s+k;3t0g0qty opf k4s of plastic have?

  What is the charge on 1 kg of ytw 23qw:nnea9zwvk1,y h)k )protons?

  An atomic nucleus hasbv:oa:qv ya( )czu /+s a charge 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 4: r,ziom p8rfvalues of 2.0 and -4.0 mC, respectively. What ir8z,if4pro m :s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bewq2yf/pgg w 3ok9f dvnq-,1p9tween them is 1.0 N. What is the magnitu nw3yg,op pf f/kg-1q9wv2q9dde of the second charge?

  Two 1.0-C charges have a f rul b2ni p/**mht6wo huao7)/orce between them of 1.0 N. How far apart are they?

  The force between a ;x-uygf :-4/kze h6bbohbk-d $30 \; mC$ 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 1.5; v o r,accfa5u5ze2ng ;,sfw0-N force. If they are moved to a new separation ofwf ,5f5vg nra,ccu sa5e;;z o2 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC ar u j32tozln;w1xd+ je7e placed on the x-axis. The first char2;ud3 tonwl1 ze+x7jj ge 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 the charge at the origin?

  Three point charges are placed on thejel s:-qko16n.*n*k/ mb;uib q l u6ih 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 magnn k*q bjkiq*u;hm lo: 6en1/sbl6-u. iitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the2m4 :azmt8g:uik+t-i; 3ande bj4jhe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -hnea:t 2+jm48g:eudbi3mt-i j4zk;a5.00 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 square, and a secn4+cn-b-avmi0,3tyx r7 v qc. gfzj2;2z mg qgond 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 forcc.g-gm-xv f b4n,rm2gji23t q avc7+zy0qnz ;e 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 (3 2 oh/hi (:xa f,e:szttinuu(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 n2o(f su:a hi(h, /:zitentx3 uC 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+k:7pe;yy e 5jmh*sjg at (0, 0). What is the direction of the net force on th; 5mej:*s k e7ygj+yphe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vwge1+ by* 4ky2fu b:r7z( jmjvertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostati: zeuybb+j r2*m7vjw f (yg41kc force which acts on any one of the charges?

  Consider point charges of +py(/s9 5zhe*+s;bc kk7wleh qQ and +4Q, which are separated by 3.0 m. At what point, on a line be+hesky * /b;q7e(5h kzps9cwltween the two charges, would it be possible 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 +9.0-C charge is at x ob .du1v/ocy7= 4.0 m. Where on the x-axis can a third chargeo y.b/dco7vu1 be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -t0xxjkl,t 1-s;ldy4 x q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it tx-j 14lxx s,d;k ylt0is zero?

  A copper penny has a mass of 3.0 cl ek fb7hsqdrz8 w(k r7-,:,gg. 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 attrtw.r ,7j1gxmj action of a fixed proton some distance above it. How far above .jt ,jg71r mxwthe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thw+*6amhp0ykvyug.ej m b-34e reads which are 30 cm long. Both are given identical charges, and t+p6eg a.myuvbwmk*30jhey 4 - he 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 the electric ,0p9oryqp.vbqw*to dv*u du /.f;z:n fqzfw., *:py0n/v 9.*uoprov bdut; qdield at a distance of 1.0 m from the nucleus?

  What are the magnitude and dir(or4popy85 5 7hjdfu rection of the electric field at a distance of 1.50 m from a 50.0-nC charge?oy4d8r(7h ju pp55o fr

  A 5.0-C charge is 10 m from a small test charge. 2*/72 mge6rdxsfh xdcWhat is the magnitude of the elsc fxrd d*x7hm/6eg22ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whas,sinac)2b n)v y+ur*t is the direction of the electric field?asr +c vis bun2,)n*y)

  A 5.0-C charge is 10 m from a small test charfyuhx:r9m6 j y*;s)akge. What is the magnitude of the force experienced by a 1.0 nC charge placed at ; kj:*h)urmasyy6x9 f the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanctx y;pik+/53 zy lsv5*4h kibse of 4.0 m. W/53vsk*pxks+l yi5ht 4z y b;ihat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticlr 4i;h*; :xleyht0bk k and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm markrx; l ib0yl: h4hkte;*?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a o i*o:i )x e--jwo2dop-4.0 mC charge is placed at the 50 cmip 2)-xd-jooew oio*: mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0e0je)r9,)wc t+v m iqz mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at 9 )ziqrvte0wm,ec+ ) jthe point midway between them?

  Three 3.0 mC chargesamqog5j., g*i are 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 tqgi.g5jo m a,*he center of the square.

  Consider a square which is 1.0 m on a side. Charges8xk l8):u 0cv(oojsrfshw 1f) are placed at the corners 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 (k0l)fu (v1jc ws8r hosx8 ):of0, 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 place tjxnfr3 c(a6x7/aog*d in a uniform electric field. What/(x3 ntf ra jgc*7oxa6 is the magnitude of this electric field?

  A particle with a charge o,yj8kd s9 .jhzf 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 0.120 g is placed in an electric field of 6000 N/Cs w(2rw. safi3w2 h0 otor vfb88mr:n7 pointing downward. What charge must be pln r fwa207mo:w83(sb2twshfrir. v8o aced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nk1 0binat(uul7mz.w( C. The ball is placed inside a unifo(z . 0tbau(i7lwknmu1 rm 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 chargegl+sdi e8;d+f of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacfe8i;+ sld +dge?

  A metal sphere of radius 2.0 cmly 2 eu(snt-;z+3ffu d carries a charge of 3.0 mC. What is the electric field 6.0 cm frou zfudn23(e s;lt y+-fm the center of the sphere?