State the law of conservation of e7 szzgrq hcz;7 lkw2) 23w:bxnlectric charge.

  Is it possible for two negatl/qnk;b) kw2 uive charges to attract each other?

  Is it possible for a positive and a negative charge to awfob -scfg8iw(o9 ,y0 ttract each other?

  A glass rod is rubbed witpb.,l fzt8/3t7: rr p vo(dmeyh a piece of silk. During the process the glass rod acquires a positive charge and the silvpoy8/r f.rtmz3 (:7ple, btd k

  A proton carries a

  The model of the atomrhhggw3 ;tfa4i ((es) shows a

  A neutral atom alwaysu dlnz4m0 33j(hw 17gcv8-zqpgw2 a,q6vbd x t has

  An atom has more electrons thcc 7l8)huk/0dpm) a39 gu tyxkan protons. The atom is

  Materials in which the electrons are bound v24oewda(gz e.) j.d gl(a0svuery tightly to the nuclei are referred udwg.eoa lvgz4sja ed.()0 (2to as

  Materials in which the electh tn vr n;k-c4.*+-sacfm.mf drons are bound very loosely to the nuclei and can move about freely witdvf c* s.a.nk n-+fc rhmt;-4mhin the material are referred to as

  A negatively charged rod is brought near one end of an unchargeds0 rpyrfpi7trcj hx;g0(lub,09bb*9 metal bar. The end of the metal bar farthest from the charged rod r ib ytpx,p9bsj*fu gl0 cb(0;r0rh97 will be charged

  Sphere A carries a net positive charge, and sphere B is neutralz7i3 atoam4as7/ooi 4 / q;lbr. They are placed near each other on an insula4 bql s7/ooa i aor43tizm/7;ated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge a58ouzg; flv8s n electroscope positively?

  An originally neutral electroscope is briefly touched with a positi7 2i), z ffas7fa);xux jpx6evvely charged glass rod. The electroscaef sxu27 )vjx6 p,z iaf;fx)7ope

  An originally neutral electroscope is ground.v-keh u ln.a,wxc.k)ed briefly while a positively charged - nak,lu ..whcxek.)vglass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the ;:d 1ghs6nl 6cx6se*h-- x ocqqp qp*cleaves separate. Then a negative object is brought near q*6l esco h-:qdxgcps1 *c6n;xhq- 6pthe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutr7 6as a7hbb5mial 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 m76bsh5iba 7 anot 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 thejr9hn /9rgj0 u Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.akojb-j q/x;: The first charge is larger in magnituxb;jj/ -o :kqade than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed t ;35efibn,rs2c3,py ulhwp .near each other on an insulated table. Which statement best describes the electros sip3 5br,ec ,;fn3.ypt2hlwutatic force between them?

  Two charged objects attract each oyz3x ups:,n)bwjmp,7ud2 *mvther with a certain force. If the charges on both objects are doubled with no change in sep mn mxd us7*z2)pu bvw,:jyp3,aration, the force between them

  Two charges are separated by a distance d and exert mutual attrac;h3)u c -qidkx+8hfq ztive forces of F onx+qik hz8 uq3h-;c d)f 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 forc.f99jn2p:+* i8qde n3l atqqor8i 2 bsyslkv.e 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 valueyisl:n rt2pl.89 +.sqvio b*n8qfje329 k daq? The force is now equal to

  An electron and a prob 40wjtt :6i (b:xmgczton are separated by a distance of 1.0 m. What happens to the magnitude of the force on th4b tzjmgwc(60tbi x::e proton if a second electron is placed next to the first electron?

  An electron and a proton are separati *ra(ewg(9i idwyyssf.foy 5f: 08/ yed by a distance of 1.0 m. What happens to the magnitude of the force *yi ryiyw(syfi/g o.0f5 8:9d fsw ae(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 happens lw9fg u4hn/l+un;; i: jsohw )to the size of the force on the proton if the electron is n9si g;+h4 wu u)jolfw:l;/ hnmoved 0.50 m closer to the proton?

  A point charge of +Q is place2otzu*0y9f ,3fewu2b gn1 sjpd 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 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 eff* uzn0bjo3sw2,92 utype 1 glectrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an e-;s tnn20fr rhff5c/ 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 othernnff 2;r/ 0threc5- fs vertices?

  Which of the following is not a ve nvexahy9+c57bwwesk vksf54 1* 8 e8mctor?

  At twice the distanci3idy w :/o8v:j8ptbme from a point charge, the strength of the electric field

  Is it possible to ha nu21;+tek uep0l 8hcwve a zero electric field value between a negative and positive charge along the line joining the t0pe nlt 2;c8 1weuu+hkwo charges?

  Is it possible to have a zero electr7 *hq0 yskhbwn:-vm- gic field value between two positive charges along0n*swyvmhhg k7b --q : the line joining the two charges?

  Electric field lines near psitive point cha 9ic*o8i,dwb j cq7x/grges

  The electric field sho- a a9h -ey36zubocmo2wn

  Can electric field lines intmq1+cn 9j,s/ -x2n csz: coix :u)tbwsersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in lr/n-** ,( j:4rxf/; :b7eammzyvm dnub fwg la uniform electric f * b, lzjnmr mrve:l7y( /-*nu:;fg a/d4fmbwxield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of e89wpasv xo hj6j+h (22fdl(lmqual diameters are each given s(hdoj2h9lx+w fpj8(v2m 6l a the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tv u ;v -nakbol;n:;h3nable in a region where a uniform electric field is directed straight upward. What can b nn;-o;3 lk:b uvvh;ane said concerning the charge on the block's top surface?

  If a conductor is in elect jukjma8k-m1/(7f va hl7aa j9 w1o8terostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hoc1 - 4yv2pzody+ zk wl(zpu/z.llow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dp yu/zz k-dz2w.o +zpcl( 41vyirectly above the hollow sphere has

State three properties of con+rga8 es+6a t6 ky/)y7nljtv kductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ikh;h co*r qj lr9(s,q.(ix* jls $e = -1.6 \times 10^{-19} \; C$. 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. ;ik*1gb c)j ujHow many more protons than electrons does this piece of plasticuc;j i 1j)*kbg have?

  What is the charge on 1 kvueeh/ohvo,g41 +r u1g of protons?

  An atomic nucleus has a charg s-euci96 20.f; qcuw wjhvh;ze of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, seoc/b ;g.7kqkfparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magq.o ;kfg bk/7cnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bet zfyg4jo 71 vhpq34 -tk6e-aqx/ ab8pjween them is 1.0 N. qja 86pe4x3g1ot-y-7 pavjf/hb4kz qWhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0x+zeq6+ , tscv N. How far apart are they?

  The force between a e3p dm/ho*zyy4(r -km yyh s(,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience /g jty okie:w+ *q+,5t vps)g+zlrqg.osqc9 ;a 1.0-N force. If they are moved to a new separation itj*kc: o5y r+q+. /gg;s z9glp q,wqtos) ve+of 8.0 cm, what is the electric force between them?

  Three identical point chargesri ,/7svxu/5 lgg q7i,p.zvmr of 2.0 mC are placed on the x-axis. The first charmzp q/ rsr,i7g.vg/, 5 xliuv7ge 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 the x-axis. A charge of +2.0 mC is p*zk bdn *o9w,t 6ck*prlaced at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. 6**z rdwb 9o,kt*ncpk 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 positions: Q1 = 2.00 mC at suy(of. 4xoh0 x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC ahy4ouos x f.0(t 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 tho y1ty2k2py2xlem2 6de 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 tok22226myypyl d1 ex. 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); : h20 ;hbhd6rgbiz;qpva)uh 7 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.h0h;hgquv)dr 6zp:b7h2;aib 0 nC charge?

  Q1 = 6.0 nC is at (0.3fsu w2*;i,nji0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha s* iiuj,fnw2;t is the direction of the net force on the 5.0 nC charge?

  Three identical char.lvn4(d h;+uz0com ad ges 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 on any onedc;v4.zod+ m( lhu0an of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.d 36nuf,1u)x; tv6oadj9mlp dnu bj630 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 onuxbjd topvl6nj d9336un m)d a;1f,u6 it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge+ xmtl,5w5jx sx;,ucw is at x = 4.0 m. Where on the x-axis can a third charge be lcstxw 55mw ,u+j,xx;placed so the net force on it is zero?

  Charge +2q is placed at the origin and gn ;+59 lpi;h1nv*vflcwyx7vcharge -q is placed at x = 2a. Where can a third positive charge +q be placevlwx;l5*nf +v;1 p gh9cyn7i vd so that the force on it is zero?

  A copper penny has a mcu (;pw+ayefg ab93d*1 ojynj8a(b3oass of 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 agaiepmw g+ tf 9;j3*ib;osnst the force of gravity by the attraction of a fixed proton some distance above f; +ewmtgosji 9 ;*bp3it. How far above the electron is the proton?

  Two 0.20-g metal sphef2 5q,xjghi5 qgaa f237tjx*s)n6o1n dwlwj0res are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic 3asxi70dtn2n oa2 xj )j6fg*lqw5hfjq,gw1 5repulsion 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 tj.b0m5h bz.e -z(wujd he electric field at a distance of 1.0 m frbwj b5juh-mdze0.z (. om the nucleus?

  What are the magnitude and direction r-wf4ki pec0. of the electric field at a distance of 1.50 mre kp4i-fw0.c from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What islfsll.5e1t/pfn.3wf the magnitude of the electric field at the location of the test cl 5n3fl..fwftles/1 pharge?

  A 5.0-C charge is 10 m from a small test char;l+8 arfodc z q7yi7v c1 qd2+7vy)vjrge. What is the direction of the eq y r+7rv d;+yaq1cfc8v7odlj) vzi2 7lectric field?

  A 5.0-C charge is 10 m zv;-ui.mn.ojo +e/9 a ytn4zyfrom a small test charge. What is the magnitude of the force experienced ban ;otm.zjyy/n 4z+e 9uiv o.-y 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 separated by a disr:: is /xdsbn 6lh4mm+tance of 4.0 m. Whd:s46mr:l+s/xb i hmnat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at thw ,wdzw:. emq4loo(i6 e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm e:wl wwz.( 6oim 4dqo,mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm(slst1k/:yk* ep; lkq;ywp .i mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fieldtpqe; kw *yp. kk;: yi/1sl(sl zero?

  Two point charges of +3.0 mC and -7.0 mC are ply sco);5 it(n*5zx zxxaced at x = 0 and x = 0.20 m. What is the magnitude of the en zx* soty)z ;ci5(5xxlectric field at the point midway between them?

  Three 3.0 mC charges are at the three co:ttalfwvl 57 0jf,z9wrners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric ,falj:5tl 0wvzw7 f9tfield at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the coi 2lwsykdxxio+sb 9j.z 8e* 4-rners of the square as follows: +4.0 mC at (0, 0); +4.0y-x4k *i.2x8wi+zsejs9d bol 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 it is d-pu0 sw //an v fyr+cpa/yx.o1-3 o9eac2duy placed in a uniform electric field. What is the magnitude of this electrvuc+p1 ewsyf9c. a-u/p-2 y/oaan0y3/ d xdoric field?

  A particle with a charge of 4.0 mC has a mass of c-h6auw;8 qly $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of pi trr33di xe19d2wiuu):sz* mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on t32i1w9uz dpur) sexi:dr*i 3the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball isdj6mh1lk4d l+r c vf(co6n+ /e placed inside a uniform electric field, andf164vrelld/c+ cnohj+m 6kd( 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 c q /5yqkcq4*jiharge of +2.0 mC. What is the magnitude of */qyqi c 4qkj5the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charg j3rk6wy7t83r.2vwbd3j 9jqc2y 1o k-rvqibj e of 3.0 mC. What is the electric f3jvr2b7w3-9 jikwqt6 jo1dcvk8y3y. br jq r 2ield 6.0 cm from the center of the sphere?