State the law of conservation of electri(ofy-dym n0.kc charge.

  Is it possible for two negative char08nq3bgq c *gjvsu:.f/ j(tcu+uc0 kages to attract each other?

  Is it possible for a positive and a negative chazi mwpk40;9s yrge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procser / hq9g 1i;uz7xrlu n-z3y3-cx jx4ess the glass rod acquires a positiv9h ln4g13 y-zx xe/rcq z7ui x3-js;rue charge and the silk

  A proton carries a

  The model of the atom shi5y4:0mfa; d f xdd3/h2 qcorrows a

  A neutral atom always has+tt0u7 ;:cdm riskd4d

  An atom has more electhwqh*n uhy2*:vf(k kzav 5d80rons than protons. The atom is

  Materials in which the electrons are bound very tightrhy/:i omsv-t9q v jb1(di)+uly to the nuclei are referred to -uyj1 /9hd m)q srob:viit(v+ as

  Materials in which the electrons are bound very loosely to the nuclei and cani::vsyc6u(iol br(0 (/p 0oe nlcgho( move about freely within the material are0lh(:0i(6c(b /g y lvope:i(urco son referred to as

  A negatively charged rod is brought near one end of ax ba8oi4 //:otbnu ci ,+fulg)n uncharged metal bar. The end of the metal bar farthest from t8io4b +:ub /)og,ctia fxnu/l he charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tt3wuqv4 5shyk36kq:7zr9mn *iws 7 yqhey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Why3in59hy 7 wzskvmw 7k:tqq4q u3* 6rsich statement is correct?

  How can a negatively charged rod charge an eleg1:* 4bnc)rvhgqct; vctroscope positively?

  An originally neutral electroscope is briefly touched with a positively uw s4os cfnkb7 z2ct9y2 (dljy:30ec *charged glass3zc ky:2s4jtycb wno sdl 2f0u7(ce*9 rod. The electroscope

  An originally neutral electroscope is groun9 x,n+hml7.wm gmdq:i7 z5jj,0a nhbcded briefly while a positively charged glass rod is held near it. Aftedxz9cmqln jj +7:iwhmgh,a50,nm b 7.r the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sownc tm7r9e4. n)k.x4gf:wa hqgc7 j,eparate. Then a negative object isg nr 7e4:9x4qgh)jct.fa7onwk, mwc . brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object ishb* gf:1)4aip8eo p rw placed on an insulated table. A neutral metallic ball rolls straight *gbr) ei41o8pwhfpa: 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 ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Couloml tsj(/ 09hws hl, aee9q)nz2ub constant $k$, which appears in Coulomb's law?

  Two charged objects are separatel) weu2mp6n) rd d*3tkd by a distance d. The first charge is larger in magnituwer)mn3d 6ptlu2* )kdde than the second charge.

  Sphere A carries a net charr4(j wp uzw(det *omq2v2( z,tge and sphere B is neutral. They are placed near each otheo m,v(2qzrwe(pt zdj4 (*ut2w r 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 b4,nm nb2l yq)nhtf1(charges on both obyq),tb4nlhbfn1n( m 2jects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and v 3, .teudhi voi8.b0mexert mutual attractive forces of Ft.hiobe d mu.iv80 ,v3 on 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 force F. What happens to the kxvi u ju;q9i6t:rl0;force between them if one charge is doubled, the other charge is tripled, and t u6i0rij; k;xq ulv:t9he 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 happens to/a)5bs)g pcy7e+s btdr pi c lj2goh2t6b4b*0 the magnitude of the force on the p 2*g+24p/0obc7 elsgj c 6 sd)pbitya)bh5rtbroton if a second electron is placed next to the first electron?

  An electron and a proton are in2aw8 */bn*hvzh,8 yu *imivseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next ,8a*ynnv i*z8mubhvw i/*i 2hto the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happen/ u 2de,.y fm cem/)oqh*e/tpns to the size of the force on the protoe e.to/em/f2n dq,hp y*cm)/un if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a s+czg2 yck:g1 c*vvdh +econd point charge of -Q is placed at one of the square's corners, it is observed th c:g1cck+vg*2 +yvdh zat 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 *or svf-,s0k ht8jj k7is placed at the centroid 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 forcvr 0k7skf j,-h*tjo8s e 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 notd2j a:f p/9cx 7bwe; l0j0tad 86aicdz a vector?

  At twice the distance from a point charge, the strength of the electric fie(rdc48si8 irm0skt1 i-gv8ly ld

  Is it possible to have a zero electric field value sypiajk(y v3sy +.5 w3p-v hp8d:kh8xbetween a negative and positive charge along the line joining the two chargespy- (vjdsv:+5 8hspk3p8kx.iy hw y3a ?

  Is it possible to have a zero electayom) m(jdb/3ia 2x1j7nc j*oric field value between two positive charges along the line joining the two chargeom) j aam 2c1ijx/(jno3*7yd bs?

  Electric field lines near psitive poi6ho y 8z*/ikddnt charges

  The electric field shown wgqn* e:n-di t j2+ws0

  Can electric field lines int5b8.6s/gzp x.i bg vwrersect in free space?

  A solid block of metal jy46c1dda-sk p-zmu 6in electrostatic equilibrium is placed in a uniform electric field. Give a statement concd-s6-6md kya ujp4cz1 erning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g j u6+ot(2kx0u5jyx/qbwdv b:iven the same charge, the electric fieldx :6u(jkod 5t2qy0b xb+/ wjuv (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region flpdd 8/q 7av7;y1da:lj n8*qpzt7rt where a uniform electric fieldd7qlljpz/a q 7dn;7*vp8 ry1tdt f:a 8 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 electric chari .3e9 -x3p9fzxpj7 hgtv s4a*xhqpq8ge

  A positive point charge is enclosed in a hollow metallic s1kcbv p0hi+-0bg:,t fjz1 zwxphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abotb1 h-:zj0b w f+c0ipzgxv 1k,ve the hollow sphere has

State three propertipm4 w: l(iq4-hg.aj4p4ssmpqes of conductors in static equilibrium.

State Gauss's law.

  The charge carried by on ;-fla.i qcm-ue 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 pr+zk 7*44widgiyhhgu o3v*z;i otons than electrgdioku h3 i4y*w*i;z47 +zvhgons does this piece of plastic have?

  What is the charge on 1 kg of a1ak,;xsmq /elu* ytp x)al+1 protons?

  An atomic nucleus has a cha1 oy,(8gljjle rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatr2 r 1m-qzml(s stjvlt.1pe ;-ed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the;lq(jer srvt1-.ls2 -p1mmtz magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chaqnhw2 h 5( 1)olf-nxazrge, and the force between them is 1.0 N. What is then1-f (oq 52zhwnhl) ax magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Ho p c4mnr4eyap-q+0h1v *5d admw far apart are they?

  The force between a xsba5*ym*)(mw* t wt f$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencn- oh t1h:wtd9e a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forc- 1nwhod9tth:e between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The by32 jr7 +7mcqj q 6cud.ixst/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 direction of the electrostatic force which acts o3+7c6 smyqtr7u dqxjc.i 2/j bn the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC 8 *c f*xegih0xej:1vv is placed at the origin, vxjhee:gf *v10x 8i *c-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 the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at.d6d, s+3y-4pywg8r x xffkph vl6v9 x x = 1.00 m; Q2 = 39 fp-fg4d6h,.vwx+8 yrxsy3 v 6 dlxpk.00 mC at x = 0; Q3 = -5.00 mC at 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 the center of a square, and a stsq1q- ze y qerz y6s32*ud5,xecond 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 5, r2qzeqey*ydut31szx6 -sq 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 n8-qf+ qion +pngi g(r*C is at (0, 0.10 m); Q3 = 5.0 nC is at (0+ o-8qfg*pngii rqn+ (, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, b unr-lxx6 g 0uw-4-fm0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcx--m4ulfbgr -xun w06e on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterakw3ufi/ev d87izmx0; xl2*i5xjc f c ,l triafc*ve zdiu,2ii /;5wfk xcxx0m3j 87lngle which measures 30 cm 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, whios*ezg wt7 31s6djlc 1ch are separated by 3.0 m. At what point, on a line between the two charges, woo*esc1gjwz 3d 61t l7suld 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 and ak 04 uqobkhlq) * 4t40ykujz-,aqvix- +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force ont*v4 aky -xq l0 4z)-0,khubo qiqjuk4 it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =k9,w/x1:qm j ehc, opr 2a. Where can a third positive charge +q be placed so that the force on it ish :p/kwm1,qj r9oc,xe zero?

  A copper penny has a mass of 3.0 g. A c.eho-pc q.( ltotal 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 k )jb (:db1bfqj.na,)nnez k3the force of gravity by the attraction of a fixed proton some distance naq1 :,eb)n(jd)bznbk3 kfj . above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung frglfrj1 r73fe /om a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thr1gfef7rl j 3/reads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude jx jxyai7 h, sz1f527r0whu*dof the electric field at a dish2a1x7w7yjfjd xuh 0z*5 i sr,tance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric)w /;w;ucpxs z*2mdck field at a distance of 1.50 m from a 50.0-nC chargx;z wu)pwc s2*dk c/;me?

  A 5.0-C charge is 10 m from a small test charge. What is the maaz .9c :1: axllric1nsgnitude of the electrnc 9rl ai1:ca:.sz xl1ic field at the location of the test charge?

  A 5.0-C charge is 10 m fr2xb7*q0g ccrq om a small test charge. What is the direction of the elecq r*qgc 2xb07ctric field?

  A 5.0-C charge is 10 m from a small t8qc 5 vr .6(umx m ,4+p9vxl,gtsbyokjest charge. What is the magnitude of the force experienced by a 1.0 nC charg4xxlm(b t5v +8r cvg,u,9m.s6qj yokpe placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated bhb p4a,*8to y, 8jbracy a distance of 4.0 m.t h cpb*,8,b4aaj 8ryo What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of m/qdy+wux8oj1 + 8rgea meter stick and a -4.0 mC charge is placed at do 8xg +y1mr u/wq8j+ethe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sw2b .4qk8ycxt 0c (puetick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two wtcyu( 8c0.kbqe2 x4p charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20ms jrv3g.6:(fqgg.dyh.mx 0o m. What is the magnitude of the electric field at the point midway b.fm sr60y.3gjg: xdov .ghq( metween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.f- 5hl.c.7 jz kwdc1ywf+ ed3k50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centerkc3ffwwj7 h.yd- z5d.cl1k+e of the square.

  Consider a square which is 1.0woek(mmx f6-gur fr ppy 9(; p* ob)4qlyl63(c m on a side. Charges are placed at the corners of thepwu-egf9l 34 bfq6)(por(c6y*krm ; xypo l (m 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform electrgbm)2n ar9a5x ic field. What is the mgnr 9ab5a)x2 magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of;q6 +.rhq ks1pg 13k1wsh9wyn lrjn b8 $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of masd9bxdfc6mlq(45 nwp 5y 9 6tve5mcp.j s 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it vcnplbd9wpx j5 m 6 te5 m6(y4cqfd9.5to be suspended?

  A foam ball of mass 0.1 enu;6km dww;ceh s7z 50oa.g.gt cc,(50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric fceg(azwg5 ts;;,m0cen6 o kwu7h.d.cield, 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 +2.04fg /*sjkyeq++gt1 80popfdi mC. What is the magnitude of the electric *jod 84s0+fg/itfqkpgy 1+epfield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. *2r6rj3 b5yympq gndf5p o+/c kwxf9) What is the electric field 6.0 cm from the center of the sphere+/g nkpmyf )56q*f2xjbpr3y59 oc rd w?