State the law of conservation of ele)mwo, zaql( h9vxxj6 *-kuj;octric charge.

  Is it possible for two negative spfzp;m;/ j6r h9m8a icharges to attract each other?

  Is it possible for a positive and qr jv)umw 5f:91+jmkplxpx545lz l5ga negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durinc+ e bjqo//a kz9wawqn.8jd -8g the process the glass rod acquires a positive charge and tjwqad n/bc/.j9 ke +oawq8z-8he silk

  A proton carries a

  The model of the atom shoibng2 r4o6:e1ces8vjx.1m lwws a

  A neutral atom alway g*0qqg;nc4yz6p2 oqm f: az1ks has

  An atom has more elet .ibt nh;(98mra p7kkctrons than protons. The atom is

  Materials in which the electrons are bound very tightly tom 7 bi8l;ilhb. s :4zre*a+xtj the nuclei are referre jzel7i* x4 .tb8 srh+blaim:;d to as

  Materials in which the electrons are bound very loo (fj/y6kbz y5vsely to the nuclei and can move about freely within tjyzvfb5 ky/(6he material are referred to as

  A negatively charged rod is brought near one end of ancl* gmin x6e(ges* q:wlz(s4 7 uncharged metal bar. The end of the metal bar farthest from the charged rod will biml:n xeswc*sg(*4 g ezl6 (q7e charged

  Sphere A carries a net positive charge, and .nv l79yy.ubj+pn/ krsphere B is neutral. They are placed near each9yjb.l .y+/n v7rnpuk other 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 electrdnqnb( e3(x77ezb, yd oscope positively?

  An originally neutral electroscope is briefly touched with a positively char *:mue7do(c at;j/t mpged glass rod. The / um(d*:mt oa7;ep tjcelectroscope

  An originally neutral electroscope is grounded briefly while a9v:5tnekt tjy5m c9 w2 positively charged glass rod is held near it. After the glass rod isym:ntk t9 tje5c2v5w9 removed, the electroscope

  A positive object touches a neutral electroscope, and nxb /2*k/do a*il veu4m(qoc+ the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the *meb o ui/4olc2k/(q +v*daxnleaves?

  A large negatively charged object is placed on an insulated table. A n 2f/ uaq;alevn9 gdg77eutral 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 daq uv2 7;nge/7 gal9fno time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units o ,pf5qk q2sdk(f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by (+0iwo i7 9pm x-vzlrfa distance d. The first charge is larger in magniifr( l o9-7w0m+xpzvitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placej*x:pc2; c rk0pv tns,d near each otx cc ;pt2 0jn*:,kvpsrher on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargygl-hk9egf :8nm*8sb es on both objects are doubled with no change shbgnk-e y:8 gf*98m lin separation, the force between them

  Two charges are separated by a distanh3zl xq6 cpt/0or 630 bet*jtdce d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual ford jt3 0 pq/zlh3tt66erocb0x*ces?

  Two charged objects attract each other with a force F. Whs/0 50bfn klhg1xbo l:at 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-four1blongx00f b /lh 5:skth its original value? The force is now equal to

  An electron and a proton are separatc4v:k0cl i/u2 wxlu/7ut +hnred by a distance of 1.0 m. What happens to the magnitude of the forx+ vn0t/h42l uc k7l:rcuui/wce on the 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. hz,5c6p4,golt 4osltf , kid( What happens to the magnitude of the force on the first electron if a second electron is placed next to thd,g,5tc pik o fzll(s t64,4ohe proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens tr9ws- 6yhm st8o the size of the force on the proton if the electron is moved 0.50 m closer to the p6sh9tr-wy m8sroton?

  A point charge of +Q is placed at the center of a square. When a second point ( xth47u+heme 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 electrostatic force acting on the posiumx ee7h(+t4 htive charge at the center of the square?

  A point charge of +Q is placumo7t iy,1y6tisnk 34ed at the centroid of an equilateral triangle. When a second chargest,tiki7y4 o31u6 m ny 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 other vertices?

  Which of the following is noibkx+hd 1knt+( n uncc6 9mf*;t a vector?

  At twice the distance from a point charge, the strength of the electric /pr-gm*thgg5r lj6/fk zl3i* field

  Is it possible to have a zero electric field value between a negativst+nbwm0(/+hjx(cp4uhp 1w l e and positive charge along the line joining thepwln+hjp1 +wm tbc(h usx4 /0( two charges?

  Is it possible to hak01lf-e;dgmd9-m f up8qwn cf .uf1.kve a zero electric field value between two positive charges along cf9e8lqkwg .mdf.mp; 1u0du -1 nfkf-the line joining the two charges?

  Electric field lines near psitive point ckvwaj)hvz8 282d 6job vh zv7(harges

  The electric field sho-o1c ed;y)6egjg7*bc z4idzl wn

  Can electric field lines internal07se i+3j,*yh nwlr;ymx:sect in free space?

  A solid block of metal in electrostatic equilibrium is placed in p p:g/jn.:hz+)y)y2g9te fu dna3mi ka uniform electric field. Give a statement concerning the electriuyjg) p: f3maznd :t ip ng)ky/9+.2ehc field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters -( +xyxdvba jfn79,m 92-w9gkuzhfjv are each given the same charge, the electric field (E) midway between the center and the surfa(2d kbvjxn9yx mv+-wf9z ag,9-j u7f hce is

  A cubic block of aluminum rests on a wooden table in a region where a uniform r--. bua1im)e*gxjh )gfy h5delectric fiel*1 dabg-5-m) ghuj )fir.ehyx d is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e ict.atv4u,l 1lectric charge

  A positive point charge is enclosed i0ywxh .n1cx) yn a hollow metallic sphere that is groundedh)y c01 w.xxyn. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of cond)6zw+yg( qecv *ao*kductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ispgpvu b(*-qpo 7 8/ 8ackbfsx) $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net crvqe hb,qd*z) v6g9l9harge of +2.00 mC. How many more protons than electrons does this piece o ,dbl r9eqq 9zghvv*)6f plastic have?

  What is the charge on 1 kg of protons?cxqyz2l704u33 zn: /knd okfk

  An atomic nucleus has ;/ck2lv ;f); ivfjjsgkm.a.pa 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/t 5q1ko ;enxo*f.6 +jntcai ck.8xuf charge values of 2.0 and -4.0 mC, respec 8otoxt/x .a;kqkjffn.*ie16n c5u+ctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwee *vx: fbe+yo8tn them is 1.0 N. What is the magnitude of the v:8+xotf*b yesecond charge?

  Two 1.0-C charges have a force between th5xwf(s2ne2 j i(fw hz,4tc:h3 xvv ef,aa(lq;em of 1.0 N. How far apart are they?

  The force between a u e8xu:h+4gl c7r 8psy$30 \; mC$ 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 1.0-N force. If tq jocf sfm.n4 (17nne,hey are mc 7fnom(.n s1ne,fqj4oved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges ofhvsii5y qu; pe3n33 is2 e,b(i 2.0 mC are placed on the x-axis. The first charge is at the origin,2h;(ib 33is53 pn vesiq,ueyi 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 +2.4t 99z(bgq5pdb tk-yt0 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 force which acts on thtqt-bp dt( b9zgy54 k9e charge at the origin?

  Three point charges are locatedpg1+fi vxft237ifbf ; at the following positions: 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 fv+ 2g;tfipx73if1fb the 3.00-mC charge?

  A point charge of +Q is p bnow c4m :w1k2;*vw ioc(:0 xciu-qiqlaced at the 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. What is the magnitude of the force that acts on the center charge if a third charic *4c:v0mwq ci(bwq;1i2 wn okx uo:-ge 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 m); Q3 = 5.xh95bc 0a s:hc0 nC is at (0, 0). What is the magnitude of the net force on the 5.h90c 5x sbahc:0 nC charge?

  Q1 = 6.0 nC is at (0.30 ppe4r3n,v.kjin.9 vqm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of k4q.vei p3nn .9jvp ,rthe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of emhh)odirrwkd4la6)i5 2 1i -an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of tr5lem i2w)adhd4-r 1i hk )oi6he charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatrloo 7 p-)yx 4+n 6-when;w6 eiadr.sr point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actineo)inr6 - rr 7o.4wsh -l6+nad; wpexyg on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at7usichj1z.bwdn :r3.vh9bq+, jc0wp sc*8y v x = 4.0 m. Where on the x-axis can a third charge bed n.jjy r+hq*s bc7:bcv1us,.cwvh pi w938 0z placed so the net force on it is zero?

  Charge +2q is placed at ttjbxnpo b2qo-fe 1kre,0 (*o p0-)uxlhe origin and charge -q is placed at x = 2a. Where can a third positive chalbfo-*2orbt,-jo0q e kun)0 p( exxp 1rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 337 ,h+-rmpmvqrzp; uf.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 attractio4 b*twx93oh .sman 1kun of a fixed proton some distance abovem 13xo*4as hbu9tn.k w it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from agmjc ,n zyr14, common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forccz,n y 14rj,mges 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 ele kyge33*2:yoxj, 92ejpghbrpctric field at a distance of 1.0 m f3byj,e rgp32eokp yh:gj*9x 2rom the nucleus?

  What are the magnitude b ujk,e i8zwl)c2yeb3n2) ro8 and direction of the electric field at a distance of 1.50 m from a 50.k8rolew3 28zeb b,c )jiny)2u0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud;vgx,s 89jqbrc-,idp)l o5r l e of the electric field xv,j9rb5i8 ;csrqlogl, d p)-at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. -3uf8evnpy c,/ y tv*v What is the direction of the electric fielde/*uvt p, f8vcyv3ny-?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o) 8ubw (zuejss(z /-hif the force experienced by a 1.0 nC ch -8ss) (j/eiw( zuzubharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan7 lsw654lwu jace of 4.0 m. What is the electric field at a point midway between the ja 5wu467llws two charges?

  A 5.0-mC charge is placed at the 0 cm mark of xjc r0r x9ikkk.6al 36a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field akak9k jr cx66r30xli. t the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markg kmo p4zz*ip1t ,x((i 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 two4p*mo, t(pigxiz (z1 k charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 andc ;mo,9nh x)dq x = 0.20 m. What is the magnitude of the electric field at the point midway bet);ocxq, nhdm9ween them?

  Three 3.0 mC charges are at the three corners of a square of sideof;3uf0 f0.ct1b/,dixlwxz yi; 7w uv 0.50 m. The last corner i0u i3 ;lwocx0f y/.x vz1 ;tuwfdi7,bfs occupied 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 place)q7d2eupngw-v2 f* gbd 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 squw*ev p7dn-2 uq2)ggb fare's center?

  A force of 10 N acts on a charge of 5.0 mC when it is kl5n v0kz5 utgp,u,k6 placed in a uniform electric ,k,0zk56g5ktn uv ulpfield. What is the magnitude of this electric field?

  A particle with a charge of 4.0n a)*h7hv2g x-g3wyawg mgf;+ 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 qn,wp 5ggcpmu9)z ;4qplaced in an electric field of 6000 N/C pointing downward. What charge must be placed ocqmp w9,;5 u)4nzqggp n the ball for it to be suspended?

  A foam ball of mass 0.150 g xp6 a4c t+;twccarries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude ancca+tw;tp x64 d direction of the electric field?

  A metal sphere of radius 10 cm carries( ,kv2kg qig)fggs58l a charge of +2.0 mC. What is the magnitude of the el,(q2)lgs8v gg gki5kf ectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries o j vhihln90-gmh 0t.8;rww rreh-z3- a charge of 3.0 mC. What is the electric fiel09;teh -8in-mgowv- rzjh3 h .h0wr rld 6.0 cm from the center of the sphere?