State the law of conseij xj03 ug:-5h:xv3 meythtc;9y1 wctrvation of electric charge.

  Is it possible for tw .hyru c s32,dg9zbq+io negative charges to attract each other?

  Is it possible for a positive ancsgq5tu5.y- c d a negative charge to attract each other?

  A glass rod is rubbed with au3zse.6:g qwz piece of silk. During the process the glass rod acquires a positiv6: .z3wu ezqgse charge and the silk

  A proton carries a

  The model of the atom shohh/cxe4;*3awje2w k wol* qe4 ws a

  A neutral atom always ((a ,y8hxp; uhrb5yo)lpj9 oi has

  An atom has more electronwfv:4nu thuto+bwq 9 ,/ u; e1jiljy*;s than protons. The atom is

  Materials in which the electrons are bound very tightly t5dxfm 8n-* x0q4nxzpq1mzy:fo the nuclei are referred tq d*zm8x-zxn5fmn4qp :x0 1fyo as

  Materials in which the electrons are bound very loosely t4 )exmbpsz9p wut2.l1o the nuclei and can move about freely within w9lbe1 zp mpxut.4) s2the material are referred to as

  A negatively charged rod is brought near one efy /pm dzg9i):in ;0dvnd of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chafvmzd9p;nd )yg0/i i :rged

  Sphere A carries a net positive charge, and sphere B(9nz d4zu6dbh is neutral. They are placed near each other on an insulan(6zbz49 dhd uted table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elect(9noe8j mf -ko; .v t.sg9mnrfroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged fr.( u1zi:gnr: 3irq/bntl/ 6 )skk;o.d htalglass rod. The elect/ rk n;)li (ao r n1kristtbld.6f.gqu:3h:z /roscope

  An originally neutral electroscope is grounded brief +r b4a(,(4jfniack illy while a positively charged glass rod is held near it. (,j kirab(lf + n4ia4cAfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separat;seleuitp)r9a3 m 9k k: pmd4)e. Then a negative object is brougha 4sed ktl3mp:)9e)upm;9 ki rt near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table.x chm8nr.l12tys 9c -e 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 balsen 1x9 - thrm2l8c.cyl, 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 Couloa y );g3uoblemy26 k8hmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge a/.p y846w ywbjha4bris larger in magnitude than the hj8/w.a yry6b4apb4wsecond charge.

  Sphere A carries a net charge67cp8hvyf 8ypw;g sp1ap i,8tg/srd. and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrost a g1s8ph /yf8,gyis;78 wp.cpvp6trdatic force between them?

  Two charged objects attract each other with a -sr9x x,*klhn certain force. If the charges on both objects are doublnxx rl,*h- s9ked with no change in separation, the force between them

  Two charges are separatedv 6u qgyq(a:bus4 xn: p5yr61j by a distance d and exert mutual attractive forces of F on each other. If 5vn(j4buy qs1 :6yq6apuxrg: 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. What happens to thkwk) t w4 *gpi;7quoo5e force between them if one charge is doubled, the o )ok7pqw5uo iwk; *tg4ther 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 proton are separated by a distance opfy( /c *g46ws ivqhb.f 1.0 m. What happens to the magnitude of the force onvig4yb* s(f pqw./6c h the proton if a second electron is placed next to the first electron?

  An electron and a proton are separatedf3w u30iq6lt.qd* fvv by a distance of 1.0 m. What happens to the magnitude of the forcdvl.63 3*f fiuwvqt0qe 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 has ,j;wqylk ; sd n4cp-:f,ly2dppens to the size of the force on the proton if the elecqj, -,:2 nyyd;ws4 clpdfs;lk tron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of vl(jtf9ub6q2 7 kpg ;na square. When a second point charge of -Q is placed at one of the square's col(pkj2 9 b ungtf7v;q6rners, 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 the centroid of an equilateral triangle. 5 qi:)rwvdn ebk6/mu5 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 the6kvm5:ndi5e rq)w/ bu other vertices?

  Which of the followi ,eo/zi**bc hff7m8bbj4,iecng is not a vector?

  At twice the distance from a px:jxr xmroh74 i2kbz;: ugm7(9q 3ukaoint charge, the strength of the electric field

  Is it possible to have a zero electric field value between , kfw+vv; n/yra negative and positive charge along the line joinyk v;/,vnwr +fing the two charges?

  Is it possible to have a zero electric field value between two pov . 5l0no1tpd*pwexd( sitive charges along the line joining the two chargetwp*0p1ld.(vd e5 xon s?

  Electric field lines near psitive p 6kv(9k 0s(jwngqi)+vqs0 smqoint charges

  The electric field sh*lz.)vu8t63 n1l mhn nrm ua-wown

  Can electric field lines iunilm 0q.z8b, l ii(tg6 mu*l+ntersect in free space?

  A solid block of metal in im1zt/n7wsmku:x:l3 u hk5.e electrostatic equilibrium is placed in a uniform electric field. Give a smkh z:7i/:ntsl.xeu13w m ku5 tatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hol8j5i/gm 8vzd++uj xitlow metal sphere of equal diameters are each givenmu8 +zdii / +txjgj8v5 the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform eolly94xqv .xywk 2gp0 ld0,,electric field is directed straight upward..4v2 yl yw x,loqe,k0x9ldp0 g What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriu5hxq.zzdz a h .8k:q,/s(hkaalc,:xim near an electric charge

  A positive point charge is enclosed in a hollow metalrr 9q,9b-7a c0d s ljbf.ol/gzlic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly jfqdr l ,ra7bz-s/9.l0co9bg above the hollow sphere has

State three properties ocj 1oji xij)c8g650hqf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i,)r oiqk cb8g: il6d c:;vi3ors $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net /(v-/a vxcbnr charge of +2.00 mC. How many more protons than electrons does this piece of plastic( xc/n/-avb rv have?

  What is the charge on 1 )6v9/nl ipf/dbx mtc ljx;ft3p n08m1wcjc); kg of protons?

  An atomic nucleus has a ch,2phv s3,(fm:v r0)iq m ldcnkarge 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 values ov 38 - mwm1mn2zzgg)lzf 2.0 and -4.0 mC, respectively. What is the magnitude of the ele)mv1 mn8z-32 mzwzgg lctric force between them?

  A 1.0-C charge is 15 m from a second dnybqv,8mw9 72+a9 p2,fm.it mv gedj charge, and the force between them is 1.0 N. What is the magnitudp+29 7bq.aw,9 8vv2mjie,dmdnyt gm f e of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are the2vfq6dc*ir.1oc 3hly t:c fj* y?

  The force between a f tvue+fe*a3. $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i0v:cfk.p7/rv zm4tu+j8bec s r;deu a:d.fm7nitially 2.0 cm apart, experience a 1.0-N force. If they are moved tudf7 + fm:c;. 7rez ru8es.:t0mbvj ck adp/4vo a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC a6w,h;9bttbn65u omiq hy y 8k1re placed on the x-axis. The first charge is at the origin, the secoy8t;tm,o iuwq1 65h6bb9k nyhnd 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 t s1.ak)ts bc8k,xf,.fequ,)u t+l qfplaced on the 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 the electrostatic t8,cq,.flkffsuek1 x tqtu. ) s+ b),aforce which acts on the charge at the origin?

  Three point charges are located at the following positions4ql*hzj,di gm:4zig2: 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 thzqh42i ld4,g:jz*gim e force on the 3.00-mC charge?

  A point charge of +Q is placed at the center ofd-g u+*m +;dhpkoz-ip 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 the force that acts on the center charge if a third charge of -Q is placed ;*o z-gkh+-m +dpiud pat the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, rpr(fjnpfku2/2 53o ixc.yrz k1i4 4t0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net jp.k25outfi/( 4 xrf y4zrkn 3ircp12force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 n7a1z5h0 mxuu*cg 2(;j wx emkoC is at (0, 0). What is m(uu zgac2e0k;h 7m wxj*x15 othe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral 1(a.k ;wp-gjwesds o0 triangle which measures 30 cm on a side. What is the magnitude of the electrostatic for0dg1-e(a jw.;kwop ssce which acts on any one of the charges?

  Consider point charges of +Q and +4Q,xllb4ew4zg o6x r+nzuv++k13 which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such 1wu3+xzrl6k zln+o4v b4xg+e that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the orindquvam .x04ha *3tf .gin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pla3.au xa t.*hnvdqf04 mced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x5 n jocw-)8zrrnw.9;cj fu2av = 2a. Where can a third positive charge +q be plav2 5ojwcra8-zn . )rn;j9fwucced so that the force on it is zero?

  A copper penny has a mast ;ab cl m;48e*t7qebhs 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 against the force of gravity aw1nbt2 *ix/ kby the attraction of a fixed prot2nx 1ktw*a/ ibon some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres *qn:h/ koqr5z are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart zq *kor:h/qn5until 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 magni1.o, faa)ea olvo.1l ktude of the electric field aa oo)l.,e.lavf1o ak1t a distance of 1.0 m from the nucleus?

  What are the magnitude and directcl/)h6zsy8t ep t . 6,uvtb*gbion of the electric field at a distance of 1.50 m from a 50hp lt t6tyz8u,sc*.6v gb)be/.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thh9*bs(rvc 1 mve magnitude of the electric field at the location of t1s9hvrc m(* vbhe test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directiohp0mc7 )si9c4ndw)eb n of the electe 4c0hi7nbm )c dwps)9ric field?

  A 5.0-C charge is 10 m from a small tejb0 6nmvo.ivo7f0; egx ql1a-st charge. What is the magnitude of the force experienced by a 1.0 nC cb .xf7 6ogq0-jai om1;e0l nvvharge placed at the location of the test charge?

  Two point charges each have a value of 3.2w5-a i r1+q/i k4qjr9np5tthtduk(p0 C and are separated by a distance of 4.0 m. What is hi i4ppu+rtn95qr5 tjkdw1a-q /t2(kthe 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 stick and a -r75au sgt pq;y4a nv+(x y*cq-4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30*qups4aqr5t;g aycy 7 x v+(-n cm mark?

  A 5.0-mC charge is placed at the 0 cm marwz0r3 kr9eh2 rk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At wh0ekrr 2h 9wr3zat 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 placed at x = 0 and x = 0.20 m. Wr;7)9j bzlcmja ip *q(hat is the magnitude of the electric field at the point midway between themimjbj*(zq c7a;9 )rp l?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. e/ru ,jkeq: l/ n2/z i;gd;s2j)uwklmThe last corner is occupiel/)gun2 wdke i ,zjlkr /e/:u;2s;jqmd by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne* kv(i1d.sr57cgyhbj.a)q1 k l(d bvirs of the square as fol7bsg1((i v vilkjd1 )b.*a q5hdykc.rlows: +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 it is placed iqyezt akhq65mi25 .wzx 4,m- un a uniform electr. 5 5m6,wxk z42h qatqimz-yueic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a massd, v r;9g69inr jrpz;t 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 ellcd(cj*,;m7 o1oos,u b/pjaz ectric field of 6000 N/C pointing dow7bo/csz*,1u oj cl,da; (ompjnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2ccv;3) h netdd/z+ok4.00 nC. The ball is placed inside a uniform electricz 3do;t4vcn hk/)ed+c 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. hg0py c h5pp9 xdpw3ip:;v7r. What is the magnitude of the electric f35 prhgdv.pwxp7p ; cpyi90 :hield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mfaga 3f .pv).ero 0z32ip +qtuC. What is the electric field 6.0 cm from thep fp3q.a vr)gi3fz a2t.0ue+ o center of the sphere?