State the law of conservation of dw3 ku*ns(0i;h b m3nzelectric charge.

  Is it possible for two ;bi80wcl: +ig p vkhidw)8;rqnegative charges to attract each other?

  Is it possible for a positive and a negative charge tzr-p ym :zp7 ia.a-yq+o attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gla: d/q+g70u9wguw d .2o u+ycgt xnce9iss rod acquires a positive charge and te owu29:g7.+0d g9tq +wu niu/d cgxyche silk

  A proton carries a

  The model of the atom p:nioiu1ise( n7-obsp,; 2ucshows a

  A neutral atom always hl/o7+pc,cklft,tw g*7cxthg :q(o )jas

  An atom has more electrons /;:qc l 3danmu1u /zlhthan protons. The atom is

  Materials in which the electrons are bound very tightlyo og t1k r:3mayh)u5- jdzf-0m to the nuclei are referred to5a-g3oz-1k0: fmuo mrj t)ydh as

  Materials in which the electrons are bound very loosta k:vscp5x nmih 3v7d-o*60 oely to the nuclei and can move about freely within the material are referr07a*xsh- ptvnc:v o63mkd5oied to as

  A negatively charged rod is brought near one *l kt+.t jq+fjnrzn2 ,end of an uncharged metal bar. The end of the metal bar farthelkfnj*t nt r+j +zq,2.st from the charged rod will be charged

  Sphere A carries a net p +:x.ugs4*d c1ipitt*id9 cg wositive charge, 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. Whichtu :gcdx1ii.s49 cgip*+*w d t statement is correct?

  How can a negatively charged rod charge andyyk7.wb6k 3gxe ga38 electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargeh8d 6ylijd48a8avm iqj+/ 1q0jepc/ld glass re iajj y/16c48 08l8vdaph/miqjqd+lod. The electroscope

  An originally neutral electroscomk + j kka v6iv-jllh43-w9m0tpe is grounded briefly while a positively charged glass rod is held near it. After the glass rod is3 ji0+-tjhlk kmlavmk 6w9v4- removed, the electroscope

  A positive object touches a neutral electroscope, and thew ;9zkhe . xld z*p:24b5lroce leaves separate. Then a negative x4 r.zhew;l9 k2op 5d *c:zbleobject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrv hoc*dk+6,u , dul:68.ttmxzjdfj1ual metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls om+hv6 ujtlk:8tudcfjxuz ,d.d*61,along the path 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 Coulomb pkjo*kg3y v9 y-2n.es constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Th*xk:6 om+yv zse first charge is larger in magni zv *ykox:sm+6tude than the second charge.

  Sphere A carries a net charge and sphere B is neutra e+sw wki a*p072pdej1t u;,lsl. They are placed near each other on an insulated table. Which statement best describes the e; ,we s2 puelt1+waids07jp*klectrostatic force between them?

  Two charged objects attract each other witouux1cbn (uawk-jr ibn1r.l+) vp;-2 h a certain force. If the charges on both objects are doubled with no change in separatii1;apu cl1o-.u)b x ur rnk-j(n2+bwvon, the force between them

  Two charges are separated by a dis 4+isz5x 0fj yyiyfdgk9l (a:ba fb3()tance d and exert mutual attractive forces of F on(3b zb y9 a f5s04ild ai(:yxk)fjyfg+ each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a f u,2j3jn8ud e gz;x4xyorce F. What 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? 4n u ,y28xj jzg;dxeu3The force is now equal to

  An electron and a proton are separr/zc/wdzt3m 5qir1gvy 4dv p;f8.el+ated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if 3gfdlvczyzr.51qt;dv/ w+ e 8rpmi/4 a second electron is placed next to the first electron?

  An electron and a proton xi jl;kino2 7uvbdx4u.o.kq6/xt3a432dd b zare separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a secj4b 2nox.74 o6 /xd;udkua 2bkz. q3ild v3xitond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What0ky( if )dh0cx happens to the sizef ) 0kchyx0(di of the force on the 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 a7(w xl nuijqui9 haech-m7- )rp6u:h7 second point charge of -Q is placedqp nw)eul79rhjua u( 6 :7xii7mc--hh 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 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 thrx8 -ski p9abkc2d. 5pe centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertic8 d ks5kri2 .apc-xbp9es, 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 mw ;. .q9 ny8upwk/pabnot a vector?

  At twice the distance from a point chah4aezm*nq 6 .hrge, the strength of the electric field

  Is it possible to have a zero ele9oszfoi f/,) nxh /8+nwc vgl;ctric field value between a negative and positive charge along the line joining thew;)o8 hn+f,xl/ocs igfzvn 9/ two charges?

  Is it possible to have a zero elecne*z z(dv :r6nln .9ctj b25,zsploczj- iu1 1tric field value between two positive charges along the line joining th1 czbl9-2oz*:e ,zjnc5nin zv.6trd l jups( 1e two charges?

  Electric field lines near psitive p)j g+ss h(gc)amd48jm+ nbwx:w*0lo hbxt: *joint charges

  The electric field s ygv.;hmib s;t*a.k87a m:nlyhown

  Can electric field lines intersect in free spacehedur rh)3v9 kawacfg h (p1 xb-4q6g5qo1w- :?

  A solid block of metal in electrostatic equilibrium is placed in a d7,nb 6 h41.hfuo3jldxykve(db rkf 82 fu-4uuniform electric field. Give a statement concerning the electric field in the block's ink2,h6xlfyfjn 81 hdo.v ur-7(eb44 fu k3ub ddterior.

  If a solid metal sphere and a hollow mu0)g-vclyzhmswsn0 n00 d2bq 3 j3xw; etal sphere of equal diameters are each given the same charge, thndu0n2hyv jc lmw-qs00zg 3w s)x30;be electric field (E) midway between the center and the surface is

  A cubic block of aluminum restskkb6,/ik: p(qyn j2s pavx-8s on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top suris8qpy(v 6bn2,ajkx k :/ ks-pface?

  If a conductor is in electrostatic equilibrium netb us28.ep:6 og;r nz* ruxhx)ar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thal8v ivd:l4 7 xcdwgka8 b1j4*bt is grounded. As compared to the case without the hollow sphd 4cg:wvvbxd78i*l1bl4ka 8jere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equb ( wi0n(sxph fs4q8+xilibrium.

State Gauss's law.

  The charge carried by one ele kh1z -f3)2qijd2fwxp ctron 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 m s +hcd)z/ zqipj/y+4myvzxax1j )4uhc4/j5lore protons than elecdv zizc+u5lajy ym) shq/4h4 c/j p)4x1+j zx/trons does this piece of plastic have?

  What is the charge on4kmjre1*i a:, yb 31vg,ehnvp 1 kg of protons?

  An atomic nucleus has a char,unfq;2 j-a. aoaq q4bge 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 qmt6 8s1kcbk) charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electricst)k 8mcq6 bk1 force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1; q(eiux:7rug .0 N. What is the magnitude of the secon(7u;r:exu igq d charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are kk (k t2bi uny wk7n9f.3c))fhthey?

  The force between a xa*5h4cy y+kn $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, 84 aer:hp nm3lexperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force384n lme:ar hp between them?

  Three identical pointzguvap*)z lro i,3z; 4 charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at xlzop3; gu*v4aiz )rz , = 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 the x-axis. A charge of +2.0 mC is .w7l-mjtg9 ey kg)/ roplaced at the origin, -2.0 m C to the right at x = 50 cm, ow9kyg)t l/m.7 grej- and +4.0 mC 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 located at the following positicqa0p - a fy+syj rb3+0nb;u d+re:lf)ons: 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 the magnitude of the force on the:3jp-cy ysaq+l0 +a;b 0b)dr furn+e f 3.00-mC charge?

  A point charge of +Q is placed at :g8hjlmjby, . k/ 0zrgthe 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 y rg,g jb0 :/hkj8m.zlof 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 nC is at (0, 0.10 me) u3wm2yu.y t); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargt e2)3uyw.uyme?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.34* xa xxhjbd5kg x,o:0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge4j x*xg bxd x3ho,5ak:?

  Three identical char: 1g:vaonfs;;rksdh9ges of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts oh9;dnk ar;s1:ovs gf: n any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what p+ m22gz beyrc a*9:zdtoint, on a lzz +:myb29d2 re*atcg ine between 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 atj5bkp* 0y5 z(va 6k6htqer- yl the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axisv b6 kr5ayt56e*q- jhzkpy(l0 can a third 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. Whm;i-qy( .l5vn3zy v3j:et i dvere can a third positive charge +q be placed so that the force on it is(v-y33v5ty.qjmiz :ndi;l ve zero?

  A copper penny has a mass of 3.0 g. A tota. oj5 g;kndbblr51sc 0l 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 agq2nwxy- z07t8.rs pmr ainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electp 8.-2s mty0zwnrx7qrron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threa(k1/;nplvv.izo1 d ,s4 ltdo fds which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the a;ko1lsv /d1 lpzn ti4f,d.o( vngle 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 ma(:h88j 9v9s f:a zss7nhkckqagnitude of the electric field at a dasa78v9ks sz h qf9(:hn8cj:kistance of 1.0 m from the nucleus?

  What are the magnitude and direction of to)*2a y gbr4a gzijqg55lvh x.65* rcghe electric field at a distance of 1.50 m from a 50.0-nC chrbig gjcq2 hx.l v5o5 )*6ra*5gz ya4garge?

  A 5.0-C charge is 10 m from a small tese2/pa d5n; waht charge. What is the magnitude of the electric field at the locationaw/h epna25; d of the test charge?

  A 5.0-C charge is 10 m from o:bx7qyt0g ah kg+(o3 a small test charge. What is the direction of the electric fielkx t g(3qgooab0y7h+:d?

  A 5.0-C charge is 10 m from a small test char67wgttzk;dko -vd19 l(+j ppil1oe5oge. What is the magnitude of the fooz+kt5o(i9ded;67 opvwt g- lklj11prce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separateds0r zpa, 1e(ax by a distance of 4.0 m. What is the electric field at a point midway between the two chazeap0 ,xa(r1srges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andvrys835 fbb l6,vkfh+ a -4.0 mC charge is placed at the 50 cmf+f358h6k l y bbv,rvs mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a msifc,m6m h 7g2eter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on ,m h m6i7fsc2ga 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 = 0h8abr- y/m0qc .20 m. What is the magnitude of the el-/hmyc8 qr0a bectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sid3q hwjc0;1y0+yb 5vgi om4fkfe 0.50 m. The last corner is occupied by a -3.0 mC charge. Find theh0fv0+41iok;gcmjw b3yqy 5f electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pla/p+ldv9hk(v6mxfh u1g g o(7w ced 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 (0, 1). What is the magnitude of the electric field at the square's ce(+ /7(kowvfupd 6xm1hg9hlvgnter?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a lhjb9 uy0la/vvr ;-8z uniform electric field. What is the magnitude of this electri;9r/lj l h8zayv 0-uvbc field?

  A particle with a charge of 4.0 mC has a masgdp s g3k8gkd.,9k e+vs 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 eleob 5bvg4 t+8xodk0,qbtl. +hx4v (pksctric field of 6000 N/C pointing downward. What charge must be placed on the ball forxvdslop .o4x(bktg,++b tv045q bh8k it to be suspended?

  A foam ball of mass 0.150 g carries a charge ohobd ytrm .qs u3* n40g6q.8cff -2.00 nC. The ball is placed inside a uniform electric field, and is suspended ab.h 4.0qon sf6dqmur*3 8ytgcgainst 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 ms5lmhwo.mxdxkc 3 /26C. What is the magnitude of the electric field 5.0 cm from the sphere's surfmk2xmh o56 ./3sxlw cdace?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What b(sitjfdi6 my0 0.vp lc9(h3gis the electric 0j96gil0 dbh3tp(c( . ysm ivffield 6.0 cm from the center of the sphere?