State the law of conservatf ,mg+ynl5(dakb32cgx -h (3 pzqd/zts*c6sgion of electric charge.

  Is it possible for two negative charges to attract each other?a yq) zl2u8noi*x pr, vs95.9cfqi)h zc*cs 3f

  Is it possible for a p/ sg is9q-lpkr,nbq41ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk.rg hr0mc)tr e7t:bt7 bi-dt8ta)/vi1 During the process the glass rod acqc8)/vr1 :0tt htr7ima7) b-idrtegbtuires a positive charge and the silk

  A proton carries a

  The model of the atom shows twy)t7 ym5 / .h yb1dzkiv,uqu613kv xa

  A neutral atom alwaysy()vxaj e)a2x has

  An atom has more electrons than protons. 1 hee0j khu9tp;4+sdqThe atom is

  Materials in which the electrons are bound very tightly to the nkw m 1/.ceysn:uclei are referredy.c n mse/w1k: to as

  Materials in which the electrons are bound r;bhd(azm(4h:1pg-65m vbqq0 uoym ivery loosely to the nuclei and can move about freely within the material are referred to v-p(oa zmbgumq1 0r; q6h5:i y b4m(hdas

  A negatively charged rod is brought near one end of an ap1hc .1ma3d y;atpcws5y /+ muncharged metal bar. The end of the metal bar farthest from the chargeddc.mayah;c / s3pypa m11w5 t+ rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pyl;/rr nqht13um , y,blaced near each other,y1yb, tru;hq3nr/ml 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 electroscope posit/d,3xmn : sdpnively?

  An originally neutral ele0+vugy*g: upgg 8wk-bctroscope is briefly touched with a positively charged glass rod. The electroscgu- gwvyg8u*+ b:kg0pope

  An originally neutral electroscope is grounded 6rh cweh5s4p/ ej0* oezt b5h6briefly while a positively charged glass rod is held near ib4j6ph h/t*s w6eece 0h5o5rzt. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate(6o f).mfp; htrh 1o.k 0sgq:na up4zp. Then a negative obs4fh.r. 6aqp:mf;nu p(o)thg 0ozk 1pject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an imb-fx-/ vv0pxnsulated 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 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 fina-0bv /vx- fmxpl charge on each ball?

  Charge is

  What are the units of the Coulomrmioy)y6gj.p56w md: b constant $k$, which appears in Coulomb's law?

  Two charged objects are se3en* 5o (h 6;isz qlvpkjlk1t7parated by a distance d. The first charge is larger in magnitude 7p;lvsl(i johk1e*nq5zk t 63than the second charge.

  Sphere A carries a net charge and sphere1f nz.z8 f3cq2(qtk3dhxo z;q B is neutral. They are placed near each other on an insulated table. Which statement best describes the elecxhq2czonk q1d3zz(8 qtf3; .ftrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on ;hfa/cru7n w:both objects are doubled with no change in se;w /c7hfu:a nrparation, the force between them

  Two charges are separated by a distancvwn rr2(t7 4+jud+:ywrwdzp .(xr+xg e d and exert mutual attractive forces of F on each other. If 4w+xz(txr2r7v +g.r wn+rpjd wud:y( the 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. Whaki*iy,w7.;u z ouj n:9iomlc-t 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-fou:c;.ziom ui* w,79kunlij o-yrth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What7p4ziq oab6aptj a2/: happens to the magnitude of the force on the proton if a secoi24b7p o a6 /azpt:qjand electron is placed next to the first electron?

  An electron and a proton are separated by a distance a7+ g5v+ocvtoof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron a5ogv v7 ++ctois placed next to the proton?

  An electron and a proton are separated by a diszm4,ju;xqtf( zebn-*r*k wq )tance of 1.0 m. What happens to the size of the force on the proton xqftk*,qw z); r(bn *ue -jm4zif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cen q9jgrj+5j de v2bsx(n2c*ajy; 2of(a ter of a square. When a second point charge of -Q is placed at one ofar en v b;*q +fsx22jg(y2c 5ao9jdj(j 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 atj d m4lvq7+ln- 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 char7vlmq-ljn d4+ ge of +Q placed at one of the other vertices?

  Which of the following iygjb g 7jpr)z; m10t2hz6lx-as not a vector?

  At twice the distance from a point charg i9m. l8pi afnm,ssmds-,q(6v e, the strength of the electric field

  Is it possible to have a zero electric field value bet .c45 zdqxs hj/;hub.sween a negative and positive chqbhx5u h;s/s.zc 4.djarge along the line joining the two charges?

  Is it possible to have a zero electric field valuwmi/a* )vgc c5e between two positive charges along the line jov)wi cg5m*/acining the two charges?

  Electric field lines near psitive pointwtsepl/qd0; c6 )wd n(bvrnomh n(5 1/ charges

  The electric field shown --r s/mei f qdnc47oj6

  Can electric field lines intersect in free lwt(b,bj- yb6/emu/ i space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elx om2opjo :)z(ectric field. Give a statement concerninp:2x)moojo z(g the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of ngv )o p(41.m8 gajceyjxk.f ynot:8(equal diameters are each given the same cho:t) pe8cy8x(1j .y .g(vjnk 4fganmoarge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a 0dh- (.r5jxkowudnsx/00yog wooden table in a region where a uniform electric field is directed straight upward. What can bo5g.- y(x0w/ 0u0dnrj o xshkde said concerning the charge on the block's top surface?

  If a conductor is in electrosm)7)az(j,2kl))jn t gt8txph ww mo4static equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ezq:8dzawq 3h kpgsg ve;:+(7 grounded. As comparedz :3we h+dkgqegz; s:q(8pav7 to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eu:e ,yyrj .gio42vh ;r6ozs f.quilibrium.

State Gauss's law.

  The charge carried by one electron is ag8u* -i(hb., e7xxsr rxpgg* $e = -1.6 \times 10^{-19} \; C$. 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.+zl hrlkxyqsb .qy( w*( v*0sn+z2kk mC. How many more protons than electrons does this piece o lslvw k(2+y+s(qknq..z0yzb *x k*hrf plastic have?

  What is the charge on 1 kg of protorncgkku3f;: /v nc 8a*yqyj-bj2 p/3sns?

  An atomic nucleus ha2-h nraj/v rd3h*r 2u2qajox1 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 cyz o3tlq2 t-bt+ 2 f.otr f7cxm5*+zu1.5 cm, have charge values of 2.0 and -4.0 mC, respe-ztx.+2 * y cum2o7ttbo+l qtff5z3rcctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m fwihd5c6ar r 7b44bu/; xwcbb5d6 1vlzrom a second charge, and the force between them is 1.0 N. What b7lw5b6 i6xr4vbau h b4w;1dcrcz5 d/is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?b,e67yz o5ru: hykd* ano+g :q

  The force between a f 5)v4v7b :top 4xdylxj3w0p b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, 4jd. 0ckuo5/ dv4+fb qwdw+b0 ,zweipexperience a 1.0-N force. If they are moved to a new boc+d i,d zewd u0.+0pqb4v4wf/5jwkseparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pq)hp0y: yz8+,x vof hxzk5zj0laced on the x-axis. The first charge is at the 8xkqy 5ox vhh0z0z,:jf+yp )z 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 the x-axi(q.k* qz1a1e7* fxvf h;ejvbys. 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.ex*bff .q 1qv e*a;kj1v7zhy( 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 positionsf3deqt4yg q;j*of+2b d b.-tqb zs-b(: 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 d3z- +obfg (j.t; *y b qbfds2qbe-t4qon the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point 0+ 7z8aj ,ow5nv) lkg9wmuiz ncharge of -Q is placed at the upper-left corner. It is observed that an electv)un8a0wl go5 w zijk+9n7 ,zmrostatic 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 nC is a3oe+w1k p5 bbyt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What iew b1+koypb5 3s the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 e*o7kxh c*mre*f /6wl m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, c h*/ k6elrwf 7*xe*om0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pljg/bi+lsot ecf)mph w;/o k o 213/qa2aced at the vertices of an equilateral triangle which m+hc2 o/ o/q3jba two1;/)e gs2pkifmleasures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0sztyr/8 b,l+ t m. At what point, on a line bet sl,t/8+yrtb zween 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 xs2. od2uv:0dq -gz( w.ey lcvo = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is - o20.ou:vsy2lgevqdczw (d.zero?

  Charge +2q is placed at the origin and charge -q is placed at x h9j xko5i .0s-.pihlg(oy-bt= 2a. Where can a third positive charge +q be placed so yk5hlij .-xp.( b9ogsioth-0that the force on it is zero?

  A copper penny has a mass q8h q2e8mwfsa5v6 2af2nw.*g z4com;r3 l elpof 3.0 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 by the attractime*oe1 t .ct-5h2egq non of a fixed proton some distance above it. How far abnt e e-.o m*e2cq15hgtove the electron is the proton?

  Two 0.20-g metal spher( -5wi zgiv6n ci7sr;aes are hung from a common point by nonconducting threads which are 30 cm iwv7-nsia cr5z(6; iglong. Both 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 charyqt 3 d(bst9 q)efp.t.ge of +40e. What is the magnitude of the electric field at a di(edq.9tbs.t q )3ptfystance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric6,y7 r2lqno,7p3t h0z8 q4 yqoquozng field at a distance of 1.50 m from a 50.pn,qqgz yq o tq47n2l,uyz836 0oh ro70-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the5 ie;,bm/ sj6tuj0tq0t ;izw2mc 0kbg magnitude of the electric field at the location of the test charge06s5;zute ;,0jtwk gm b2i/c jtibm0q?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ofp( wbn9 u* ru5eo/;xhxhrp.*m the el* ; 5u9xwporp.e mnrh xh*b(u/ectric field?

  A 5.0-C charge is 10 m from a small te gcti.a 1pe5q5st charge. What is the magnitude of the force experienced eaciqg.5 t 15pby a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value.a3 ; o8l)wib s0susbq of 3.0 C and are separated by a distance of 4.0 m. What308.lbb w;isousq)as is the electric field at a point midway between the two charges?

  A 5.0-mC charge is plk7dg;y)tx s0v aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mard0gkxs ;7t )yvk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a)2uvav6 holw aq2scgo 4. au62dvxn; ,nd a -4.0 mC charge .ac)a ho2,64uox262 d;qan gv wu svvlis placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placehokis1q m gjs5bew.tyi8 ()ixu: ; s9*d at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point ei;t 8qhsm:s*xb (yo g) w 9.sijik5u1midway between them?

  Three 3.0 mC charges are at the thr/z0 6)d mfsyndee 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 centd 0dfny6mz )/ser of the square.

  Consider a square which is 1.0 m on)vt ,kz .wvi*zqk w03p a side. Charges are placed at the corners of the square as k 0)z,zkw.v3ti* q vpwfollows: +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 c,ykz.(j 5nr2 ul pe1+,xufai1i e+feit is placed in a uniform electric field. What is the magaz,e+ e1nxj lpiru i+ce 1 fuky(52,.fnitude of this electric field?

  A particle with a charge of 4.0 mn;cd ruh-yl +vcd k6+8C 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 1w3wis7,hm -k +gskf:3-cu rq jap mf;of 6000 N/C pointing downward. What charge must be placed on the ball for it to be ui+spqf: ch3w a 3m;kjf -w7mgrs,k-1 suspended?

  A foam ball of mass 0.150 g carries a charge of -2q/ q yhs(meekt4 .14te.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directionesemy.te 4 (qkqh4 1/t of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.i2h bj2js- lke7csw7g:s-, q u0 mC. What is the magnitude of the electric c7hkjw sj2s2-qe , :-lui7gs bfield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha1xsq it9ul0 juj2y.;vyza2-t t is the electric field 6.yiytvas x;2tql.u 1j0u-92j z0 cm from the center of the sphere?