State the law of conservation of electric ch9d6r 9 e rx)ei4rp co4j;mwql1arge.

  Is it possible for txa2b cji8; h(-o( k wxrbuy )c8wnf09fwo negative charges to attract each other?

  Is it possible for a positive and a negativetwme,qj gk: *7c:kc /v charge to attract each other?

  A glass rod is rubbed .mxrs2)67aw f.os g,gl igj2xwith a piece of silk. During the process the glass rod acquires a positive ch6sm,. 7a.g2irx)sogx2 glwf jarge and the silk

  A proton carries a

  The model of the atom sho8d yz(/y3e 1xd(z ql y2a 9c1tqz3dxbzws a

  A neutral atom always haltxmi5rt) ; x8y0c7fx s

  An atom has more electrons than t1rp4:cw 8gt lj.;mdu(o3s qx 01lhszprotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are 0fz/xa uu(3ju referred az(ux3u0/fu j to as

  Materials in which the electrons are bound very loosely to the nuc :phriuh3 /v bfa4.vw8lei and can move about freely within the material are referre.v h huf p:48rwivb3a/d to as

  A negatively charged rod is brought near one end of an uncharged meta1 vz4i2ndcip rsgn551 e,iy 7jl bar. The end of the metal bar farthest from the charged s15y5j12gr in7nc, zid4iveprod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. dzx8i+c:s(l7ptc(/ ; dks oxuThey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement ic ci/(8;:k tupxlz(d7o s +dxss correct?

  How can a negatively charged rm4xwd sat.o,**-6fi+bqgsn hfw*r9 dgkz( ;w od charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positive3tn )w+hw 7jzvly charged glass rod. The electrosco jn37hw+zwv t)pe

  An originally neutral el:8 sy*lihv )wpectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed,yi whv:l)sp *8 the electroscope

  A positive object touches a neutr( 0jr 6xte fsv(braze29y52mtal electroscope, and the leaves separate. Then a negative ox6jftt eb am9vs2r0ry( 5e(2zbject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral n8qp izrgkk c*n3/2y- 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 ba38kz-kynrqi/2n*g p cll touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb -71ovvhw(oom constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge dpl a.gg3 4/meis larger in lgmg3d.a4 p/e magnitude than the second charge.

  Sphere A carries a net charghb0mujf.hwx-i. wk , .e and sphere B is neutral. They are placed near eacx.hb i f uk0mjw,w-h..h other 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 j 9ax-c b p0hpk0o0 ep:p; 6xuuj/d-clcharges on both objects are doubled with no change in sepad-x:jp0-p6xe/hobu pac0 9j 0 k;upc lration, the force between them

  Two charges are separf 7aav*9,hawbzb ) f0kated by a distance 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 mutualv7bfkz a, )9fwhaa 0b* forces?

  Two charged objects attract each other wit.) dtei;v/zsoew1,-wtjo m c72jd0p f h a force 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 to0fc 2ptsjvme).t -w e1i;7z/dj,odw o one-fourth its original value? The force is now equal to

  An electron and a proton are separatey9jvn) 6fao2rw*yxd ,* wd/kx/v3d fa d by a distance of 1.0 m. What happens to the magnitude of the force on then6y)ravx* 9d x3/,dkw2a jv ywf*df /o proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance0w s ir 65k-eb ht4d*8xi(ofwx of 1.0 m. What happens to the magnitude of the woi4f-x wr b86ie(5*x hk0sdtforce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separaprx3v( k)kv r1ted by a distance of 1.0 m. What happens to t 1) 3(prkrvvkxhe size of the 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 squarj+ lt izysr8xc -)0+pj8smm3xe. 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 xsjc0rm+-8t3x z) 8lpsy ji+mplaced 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 centr0.z me0q:vi vroid 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 charge of +Q placizv:.r m q0ve0ed at one of the other vertices?

  Which of the followingqte bywcd7+3.7 qss*ran:o6d is not a vector?

  At twice the distancy0akp*g+c et 0e from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negatc e0x(wi.maaj j7i.3. m zkjz(ive and positive charge along the line joining w.j0 im. 7( a(imcxejj.3 zzakthe two charges?

  Is it possible to have a zero electric field value between two positive charges 1jm5qh -xwedm3,e :hoalong the line joining the j-o3eh mex, 1q5 dmw:htwo charges?

  Electric field lines nev0cll up(al3ifj(;1vmhv i1. ar psitive point charges

  The electric field shown cjnfzo.)cx8.e;u; j:d nqm;) hz4rr v

  Can electric field lines interse n);ej,dvt)tzct in free space?

  A solid block of metal irlked2sd3(v. f/ 9mipn electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the e2 /ps93(mkrd l.vf idelectric field in the block's interior.

  If a solid metal sphuwzm, mv1wm 5csq8v w:0+y bk5ere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfa8k v5w:zbum s+05y ,m1mvwq wcce is

  A cubic block of aluminum rests on a wooden table in a 9o qrmg f-t5:kregion where a uniform electric field is directed straight upward. What can be said concerq: 9f-5mo gtrkning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ch p rso g65f5;u*su.ppmarge

  A positive point charge is i,k /y5a,qpo benclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fpq 5b,y,/ai koield at a point directly above the hollow sphere has

State three properties of conductors in s,xq+.erri7p (n uv0xytatic equilibrium.

State Gauss's law.

  The charge carried by ohoo8. g,l,yc gne electron 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. How many more prj+lmp28m g3jjq,s z v.otons than electrons does this piece of plastic,j8 mjlvqj.pz gs+m32 have?

  What is the charge on 1 kg of prib 51sncg.bu; otons?

  An atomic nucleus has a chakj qr(ye45zt by / 5jm;f,vfn;rge 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 3apf5p;ouiic.h u4l 5ne)g 6ncm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tnh)epi5.5ual6oc4ni; fu3p g he electric force between them?

  A 1.0-C charge is 15 m from a second 1 5 sji47ywgf fo5gpc9charge, and the force between them is 1.0 N. What is the magnitude of the second chsi5 g1pgfj7c5y 9 fwo4arge?

  Two 1.0-C charges have a force between them of 1.0 N. How farvr2w;+ ok3jzsra 9lxh:)w (xc apart are they?

  The force between a 99c enq :e,g q/ixxa/k$30 \; mC$ 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 e7f k5;- jqtew+lph +h1.0-N force. If they are movedhlfe +w 5;-pj7 tqeh+k to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point chargev*t;p d3c- x-ve fg;ccs of 2.0 mC are placed on the x-axis. The first charge is at the origin, d-3;f*cvpt cvx-c;ge 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*c fqo1*ztq kt.jio ),dw6,yq 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 t ,oj qy*)ztq,.6f kq1iodcw* the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located atz0s(051y j z8wgcwnf w 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. Wha51(fn0wg80z cwjw zyst is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of16vbwjb w2p k; a square, and a second point charge of -Q is wbpbvw2k j6; 1placed 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 = 5.0 l1cvzdpnx6 i. j1 (/pv(p q7mvnC is at (0, 0). What is the magnitude(. 1xzplv (dnvpv1/qmi6pc7 j of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)7zoyu -01d ewp; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nCw 017od zuype- charge?

  Three identical charges of rnp/tqy 3q/fr8h -u;z3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cnqr/hpf-yr3 z8 u;q/tm 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 s7gmb1h 33o7g rc8cd bfeparated by 3.0 m. At what point, on a line between the two charges, would it beb7g8g1 morhb c7fcd33 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-C0cf3r ovg8zh/o,h z8 -f5onar charge is at x = 4.0 m. Where on the x-axis can a zcaghrfn3z 8r,vofoh5/ 8 o 0-third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q ic jvxrn:3 0 3-4si op)t8fo tag3m.ugns placed at x = 2a. Where can as t3.nm3rxc 0o t-fa8n:g)gp uv4i3oj third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of eg m629 ivnai;/ c5iun$4.0 \times 10^{12} \; electrons$ 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 gra 9t(9hzc8ix y)4csnnzftsde e:1n /)fvity by the attraction of a fixed proton some distance above x s i1ec:ft z(/tyhds4)nf)n8e99z ncit. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pomjmlvh 56:igte /x67kint by nonconducting threads which are 30 cm long. Both are given identical charges, mke7jxh6gvl5im t :/6 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 charge of +40e. What is the magnitude 9kuc a8y n.7tqjur1:sof the electric field at a distan .8yu7jcsku19 tq:ar nce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5j cca5h 2euez76,b5ux0 m from x2,ueeajccbz u5h756a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test cr7ylr8wu 8a i(harge. What is the magnitude of the electric field at ther 8lay7riu(8w location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the diry7c6ek e+0de zh ls0e:ection of the electric field?c0 de+z:h0e7le e6kys

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the zy)+ ht 2w0gs,nvly6cforce experienced by a 1.0 nC charge v ,2z 0twh)gyc+ly6snplaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dis hf7omc(fl-m( vv.kp,tance of 4.0 m. What is the electric field at a pointflv pmv (h( fkm7c-.,o midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sin9ig-xmei)y h9ui97tick and a -4.0 mC charge is placed at the 50 cm mark.iix- 979y )huimeg ni9 What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metwos w).. zc8k2bxc: hher stick and a -4.0 mC charge is placed at the 50 cm mark sx8h.hcwcob k2: wz.). 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 placed at x = 0 and x = 0.20 xp1d0 p7qcn stz+*-kim. What is the magnidc 7xptnk-pz+1qs0i *tude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.bisz3,vd e(:khe2wd7 50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squk:d3bd2 v(,zi 7ee swhare.

  Consider a square which is 1.0 m on a side. Charges are placed at tuh/ j wz5mw iakyi25wn*g+ k11he corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (wg5zki aw* mkn i+yh 215wj/u11, 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 in a uniform electrtfy5; . m xf.z:bzwnh+ic fiel.f:5xfzzbtmn;+y.h wd. What is the magnitude of this electric field?

  A particle with a charge ofq1) * patrdrekn(sn,. 4.0 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 placed in an electric field of 6000 N/C )rtot((tt b2wpointing downward. What ch(tor( ttbwt)2arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries6k 6jgtb7 qnozmc50c3r fn0(b 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 and direcqbb(03 7tmcgcnkrnj 0o6z65f tion of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the e1 e0h2 fxje:sczq1)v magnitude of the electric field 5.0 cm from the sphere'fe eezqs1c:v20 )jhx1s surface?

  A metal sphere of radius 2.0 cm carries a c,rnl v4wzpi3;in0 ro- harge of 3.0 mC. What is the electric field iol, ri4;z0n3 pnv-wr 6.0 cm from the center of the sphere?