State the law of conservation of electric cjg ,vo*)0jdki mu/z .dharge.

  Is it possible for two negatijut1p cj4f1 q-ve charges to attract each other?

  Is it possible for a positive and a negative charge to attrp1zbm f1hi7 :kact each other?

  A glass rod is rubbed with a piece of silk. During the process the glass l:a9mxg bu4r4 rod acquires a posim:rag l449bu xtive charge and the silk

  A proton carries a

  The model of the atom sho26b01t -eif6 zssk4t fl-ciicws a

  A neutral atom alwayikygj4x hg 4bcs-q57 )2y-c4uznwy8i s has

  An atom has more electrons than protons. ya h*,ozznvj8odvcn ):mw;2 ,The atom is

  Materials in which the electrons are bound very tightly to the nuslcrw:/zi /g g ,+egh(clei are referre/r/lwih+(, cs g gz:egd to as

  Materials in which the electrons are bound very loosely 4t +6gcolbn5 -gy,iq jto the nuclei and can move about freely within the material yqlbn5i4cot6 -g+, jg are referred to as

  A negatively charged rod i)g8p25 ik ai giaz: 2t0tg4ndv+ddsz4s brought near one end of an uncharged metal bar. The end of the me5+zg40dt i 2avi n8si4g:kgdzd) 2pa ttal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They arjhd)ab8 fi (th+m:* nre placed jta) h+m8fn( i:b hd*rnear each 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 chargeupt-)/rn akw2:.x dfx an electroscope positively?

  An originally neutral eles j:+w/sr*nlx*n gby5 ctroscope is briefly touched with a positively charged glass rn*5rwg/ *s+nby sj l:xod. The electroscope

  An originally neutral si r8i;.gi mh(poh(, relectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is remov;rmrop 8i hs((g ii.,hed, the electroscope

  A positive object touches a l 9ynzc cn*z6:b+w g0bneutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens t+zc :bnc*nw g6lyzb09o the leaves?

  A large negatively charged objc7b) w-98lh;axf1dty.)sl(hb ny zcaect is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball z-.ctl7 a()aydhsfy)bxw h8; l 19cbn 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 final charge on each ball?

  Charge is

  What are the units o-bq6,plkc6 hxx9 g u-7- irqysf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fibjtpitk)/r4wu5;r c:s c;3 dbrst charge is larger icj:/ pbk4rst uw3i ;;c )5rtdbn magnitude than the second charge.

  Sphere A carries a nbz-+a 84vg 71 v4ixf+jbijxhdet charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best gdf7 v +1v+4 8 zix-jxbibahj4describes the electrostatic force between them?

  Two charged objects attract each othjc3.d jo/ x/0 ;a j0svadlevz)er with a certain force. If the charges on both objects are double x3 ejc.d /av) os0dj/vj;l0zad with no change in separation, the force between them

  Two charges are separated by a distance dw8j5y nk* h7ijcldwaj9mtv;+ ;q7s+ olu(ms * 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 f jo+kql *w*;ujltm9sh7a;v(m dsyn +cj5 87iworces?

  Two charged objects attract each ot02.3.i*vktcnbi reo*klsvo 5her with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, se kv* i*ir.02n. ko3vlcto5band 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 of 1.0 m. What 1zufkt )x.rf sto;t+4happens to the magnitude of the force on the proton if a secon f4t rtsx1t;uz+.okf)d electron is placed next to the first electron?

  An electron and a proton are secs /;ci :fv0i/jrb,lr2y8cl86 hl5 yu/ lbnzsparated by a distance of 1.0 m. What happens to the magnitude ofcu0bc58 ic6hzl :v8/,r l; lys2rb ynil/ fj/s the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distancdrekd2::x9ho 1 2prv2x7 en noe of 1.0 m. What happens to the size of the r9o122k nn2:x:v edoxrdphe7 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 sq w7e0v7txpou7 /. qgpaz6r2i wuare. 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 chpu6 07/pirv2 wea7wgq t7 z.oxarge 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 centroi oczqg :oz0 me34b3z:taq-mrx 6x7jk-d of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vera: 0k cxjq 3gqzxz 3b6-e74:z-rmoo mttices, 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(v hkq zx/6ql0 is not a vector?

  At twice the distance from a point fizs)56)x p. d,gqrmaa/ax -kcharge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativen9g2j1 ixojm)zh:a pkqw f:3( and positive charge along the line joining the two charges?i2h x9 zo j:mk(1j3gwq:nf) ap

  Is it possible to ha 8i2+sz uzpvt;ve a zero electric field value between two positive charges along the line joining pz2vzis u +t;8the two charges?

  Electric field lines near psitive point charges iir696v f)t .xdmkv*o

  The electric field shownk efo;4kg(e i1

  Can electric field lines intersect iqq(:wbl(az *r.syv+ccg:5dx n free space?

  A solid block of metal in el03t/dnm8e4iddl .m 25qru vxoectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in tqm r0v.4 3tom x82ddel /5dinuhe block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametersjpv 5se zv,gzmxb/37 u0pwk1, are each given the same charge, the electric field (E) mid, pevx5v37wzg/0jm kb 1z,s puway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where 3xh ;3ziup, f/eo fnj.a uniform electric field is directed straight upward. What canx3i.u ;oe/zjh ,n f3fp be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anye +pxd)b3z 9wh:h lh0 electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is nl(p:-nv2eq y ;f*1 mqc 6zuevye3x- agrounded. As compared to:qu1y x zap- ;vln(e y36e f-cv*e2qnm the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties8t,t ,p 0mdmdy of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one el d:*x.- qlwbbdo; h hwce46f*tectron 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. a.jszh;n d 9e477vvkwcxk65 6ok y8 0usa7cwj How many more protons than electrons does this piece of plastic have?7we7 6 a nv6vyjksw0 .;k c5xdzc4jkhas7ou98

  What is the charge on 1 isoxz0um z1(p n5b5y/s69iw wkg of protons?

  An atomic nucleus has aw*oag5h-/ kqoz5c 5aq( jfhm sgxc)(: 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, f f9c(r l5(g3u6iqz eohave charge values of 2.0 and -4.0 mC, respectively. What is the mg59cru(if(l 3 6zoeqf agnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweew :ar cll3 ,h;pl*g4tpn them is 1.0 N. What is the magnitude of tw43lrap *gh ;c,lpl:t he second charge?

  Two 1.0-C charges ha11 ybep cmuegj80gs+9ve a force between them of 1.0 N. How far apart are they?

  The force between a gr1:27y q(vi i4w oj/qw9:y ec2pmfrn$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,k f4ghkp8m lb n89t00i experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, wha0i8 mg4hptlfn 0bk 9k8t is the electric force between them?

  Three identical point charges of 2.0 mC are pldpk.m6qg oynk6 d6q 4 3s;pzk6aced on the x-axis. The first charge 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 diqgkqd.mn66d46p os y;k3pk6 zrection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge ofd qhz w/,)7aw 5dw3aiy +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 73,dy)wwwia5 azh/ dqand 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 6e4ebqndbe lmw0du5v)1r+:z 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 th 1rwn5deb v qd:em4lu +)zbe06e 3.00-mC charge?

  A point charge of +Q is pla; wnym62unl. hced at the center of a square, and a second point charge of -Q unmnwly h.62;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 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 = 59sxc7q yxt7+ffsqb* ..0 nC is at (0, 0). What is the magnitude of t79y7tq fss xcx.b+qf*he net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);pn-i2+p - dgpahxdw (7 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thedgxp w n-dipp(+h-27a 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 equilater4f:. 5chhz6m5q 3t me+ayq ukaal triangle which measures 30 cm on a sideqem 4:ut+hqykf6 h.a535cz ma. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4rt,s ds .pfd8ibr r09h.+)mfmQ, which are separated by 3.0 m. At what point, on a line between the t8str sidp ) f0dh.m+m9, rf.brwo 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 an*q dr m*v: v/8 o+4aqqt)tmbygd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can 4m*o)m*a+qbvr:tvqq 8 /gd y ta third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chwtimv(o+z )g1 arge -q is placed at x = 2a. Where can a third positive charmg)vo1i (+twzge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3ch1kdk it .d+1.0 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 ofbz x,9l( 7p1fkmtc;he gravity by the attraction of a fixed proto;(c xhfkzp, t1lb79em n some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by non6rn:ylc4+xy e */ fraeconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thre+/yfe rre*6ycnx: 4laads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wp0 +yji3* zygvm f/y0,e0v niahat is the magnitude of the electric field at a distance of 1.y/0yg0ype 3 , j+i*nvfvzim 0a0 m from the nucleus?

  What are the magnitude and direction of the electric field at a )y u/ v u1y(duu,dbg;fdistance of 1.50 m from a 50.0-nC charge gyf(duuu)bu, v;/1yd?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudea8cne 5y lcwwyl)5r yl:; 24da of the electric field at the l8aa5cwl yy 5;dyn2ew l) cl4r:ocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th3a1mtef:sadd 0h8f ) ce electric fiela :f0c3hs1f8t e)dam dd?

  A 5.0-C charge is 10 m from a small test charge. Whfy+y pin 3j6 9-ynl h)oox7m.xat is the magnitude of the force experie y6- pimj)7y9nlhyx f. nxo+3onced 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 sep4(to tk4sd 4azarated by a distance of 4.0 m. What is the electric fie 4 ttk4za(d4sold at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm marxjp1qmm u1 752r9ityby/: x kg*ip.jek of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 3egkiu9y2/ j1bmx: i 157yxpmr p qj.t*0 cm mark?

  A 5.0-mC charge is placed ai9k ypy1y0 i.at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. 1pyi .yakiy09 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 placelqi (3nmvebu h65s4+16a 1 wub5 szjijd at x = 0 and x = 0.20 m. What is the mas+n 6vb u5a 15ebiijq w (ul3zsh4j16mgnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornmiaiy,1:l*v tn 7xke.1n,ajners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find ieka1:n*lm, av.t x 7yj1, nnithe electric field at the center of the square.

  Consider a square whimlu.nfnf 3e9a0/wz j.+yam2 ich is 1.0 m on a side. Charges are placed 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 centfl0 n.afi3 9mwmy/e nz2uja+.er?

  A force of 10 N acts on a chargevliim g0f1f0s ob/ (-ycig9u6 of 5.0 mC when it is placed in a uniform electric9is 0vgy1of m -i f0i/l(cu6bg field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hashy-*xkzhv*g- ;g s00de)k aqm+;-w 0jtwoz kp 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 0.0 7mw8irgkiq9 120 g is placed in an electric field of 6000 N/C pointing d8qr k9mi0w i7gownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a )q2trctv6l5 c charge of -2.00 nC. The ball is placed inside a uniform electric field, a2cvlt cr5 t6)qnd 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 chargee cze. k vvwp+5f7/.n42s 3wzkjro0j n of +2.0 mC. What is the magnitude of the elec7 sfno3ek0v zc.vj4r.w/jw n52zpe+k tric field 5.0 cm from the sphere's surface?

  A metal sphere of radi r(2guoe8vm; mus 2.0 cm carries a charge of 3.0 mC. What is the electric fi; murm (veg2o8eld 6.0 cm from the center of the sphere?