State the law of conservatqv:m+tz /nhi39)ygs:vkc 5fb ion of electric charge.

  Is it possible for two negative charges to attract each oj6u6dv3qqxy w/e l7b7j5rb 7 ii*pu j9ther?

  Is it possible for a positivhfl-ls*p*1z nncq) + k:qoqe4e and a negative charge to attract each other?

  A glass rod is rubbed with agq zjvk x 2*,1utr6l.te m1-+ftyv: cn piece of silk. During the process the glass rod acquires a positive charge af v . tjtmnu1gyetr+:qx2c* 16kl,- vznd the silk

  A proton carries a

  The model of the atom shows qy4i3) ohpp5q b85hl*raw +nca

  A neutral atom always has2d2gerb 6bob*6pdz *zvbzq/w9h3 3x z

  An atom has more electrons than protons. Trnq3g+n a)jyq51gs 9 5a o0 speu5iz6xhe atom is

  Materials in which the electrons are bound very tightly 4 fs2-dcoyj, bsb6kmn3(u5zix *bdz *to the nuclei are referred to *jkdymx*b 5,db b(zi3-f6u2zs nso4 cas

  Materials in which the electrons are bound very loosely to the nuclei/e-er-/ag ohd8*xr ul and can mo ro-h-dxu// *erla8eg ve about freely within the material are referred to as

  A negatively charged rod is brought near one end of8k/b 7;k:+ft oxsyejr an uncharged metal bar. The end of the metal bar farthest from the charged rofb8:+x oyr/e 7k ;stkjd will be charged

  Sphere A carries a net positive charge, and sphere t pdggu+7*f iy.0( exnB is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundn0 u(.p7f+igte * dxyged. Which statement is correct?

  How can a negatively5d 9u) qxh(s(oq wk;uk charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posit9wmi t,6 lrv;aively charged glass rod. The electr;tmvlwi 9,r6a oscope

  An originally neutral electroscope 6)dv yee)/bpvo ( tz3(mgabt/8s. fetis grounded briefly while a positively charged glass rod is held near 8 6)(oebzf (pbe )ytgsm3./evvt/adt it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the t zsyvwo06-o7 leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?v-7o tz 0oyw6s

  A large negatively charged object is placed on an insulated table. A :*.tj,hyi u5 pj ;pw*u rudcgj/l- kz9neutral 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, butlru5 gzy9k.:*d/;u hj pjcpjtwui*-, 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 Coulz.n2l ) beqw*icdc1/romb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firsrd1xi y -d c:v*ar3jt5 *jd4gkt charge is larger in magnitude than thr5r xj kdag1tdd*c * 4v3yi:j-e second charge.

  Sphere A carries a net charge and sphere B is neutral. They t .dh5i gd 7 5vmy(2e79hjmisi n8y(syare placed near each other on an insui hgd2yes 7ys 58(5iyin9htv. j7m d(mlated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certaei/tg-hfytuks5 : y 4(/zcj y4 /zum.sin force. If the charges on both objects are doubled/u eigy:h umkst /(zty/5z4j f-4c y.s with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attra36h+4wdo1 df/mk umzqctive forces of F on each other. If the charges arfq/dmu4 h wkz631+d moe 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 the9k lbqw8: g.w(cd au7y force between them if one charge is doubled, the other charge is tripled, and the separation distance.g( yq79k bl:c udw8wa between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separatef26we ey wm;2wd by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the f2e fmw ;e2yww6irst electron?

  An electron and a proton are s7 h)ssqr5qf;(hcfw c)+0mxtv ezo53yeparated 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 t)m5qhwyc(vef hs cs5t qzx3 ;7rf)o+ 0o the proton?

  An electron and a proton are separated by a distxpa-4j.gw ql 0ance of 1.0 m. What happens to the size of the force on the proton ifawq4-jg.0 pl x the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pbl(- t l0ta(g :( tdpxcxg5ta /e:pm+xlaced at the center of a square. 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 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 thee/ txg(pba 5xtatlcd-l:t(p+x0:m g( square?

  A point charge of +Q is placed at the centroid -ahy (ara2o/ oof 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 placed at one of the other veha-a/2(ro o yartices?

  Which of the following is efw*p f s7u8s2not a vector?

  At twice the distance from a point charge, t aarac 6 fx10sgy760tphe strength of the electric field

  Is it possible to have a zero electric fiely5 :bndxq2;1k) lmql vqc-u9rd value between a negative and positiv-;l q52qxdyv:nc)m r9bk 1lqu e charge along the line joining the two charges?

  Is it possible to have a zero eleeurun tv r(+70s1j+jmctric field value between two positive charges along the line joining the tw7jusrm++ nr j1tv0(ue o charges?

  Electric field lines nr,of.*ba ea.d gyv81 year psitive point charges

  The electric field slefuk3 y8 ps4,hown

  Can electric field lines interscmy v/v ;h.np-ovwt7 v tr5:kh5ozca4 3pf)6 dect in free space?

  A solid block of metal in electrostatic equilibrium is place5j30qlvw-gaceo 9e h qy,5h :dd in a uniform electric field. Give a statement covj3d5gw9 y-he,h: qc 0olae5qncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere ofuuot t( o*tp)ce;b9iz b8b1r8 equal diameters are each given the same charge, the electric field (E) midway between the center and the surfztiu9ob tub1*(e8bro8 c p);tace is

  A cubic block of aluminum rests on a wooden table in a regiong4 y qnr;,kg ibk6 o5*(/apyxw where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top (pxnwy ikobgka/5 4r;,q g 6*ysurface?

  If a conductor is in electrostatic equilibrink )c b.x9vm) xp(r+i d(lt*-ui 3ejyyum near an electric charge

  A positive point charge is enclosed (q4i0s lsb9uv,(g u rrin a hollow metallic sphere that is grounded. As compared to the caluv iqu(s9s,b0( 4rrgse without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of cone/ 8d y7q*cvkxductors in static equilibrium.

State Gauss's law.

  The charge carried by one ele6z2zq ctl 1mz,ctron 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 +2.0/ fwv9l.y 8uzy0 mC. How many more protons than electrons does this piece of plastic have?/8f yvu.w9lz y

  What is the charge on 1,g (wq1zsy7g g kg of protons?

  An atomic nucleus has 3 mdkosqn0)3 -kf .vsba charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 5j lbjdckj42)ii/* od-u-q qi drbl(+1.5 cm, have charge values of 2.0 and -4.0 mC, respective i)5j i+ cjordl( 4qk *ui-qd-/dblb2jly. 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 betweer ;ax,48;2jjy yweeh vn them is 1.0 N. What is the magnitude yj4;h8xvyee ;a2wr j,of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theys lun5c1 1/ y;.bg/nhj)ioem p?

  The force between a /cn3)h2kcd ihl 7s1 ar$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, ex8rhirwaz4;e)q :k0y o perience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweeaw :4r zqr0h8; iye)kon them?

  Three identical point charges of 2.0 mC are placed x+.w.vb:+v hyj/s q ,navckp/-fh9g ron 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 ,:hqvf v s.vj9+x/ gwa/cn-y+b.p hrkmagnitude 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+ tmv25n 6brzzzq,czh8a/ 2 py +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 force which acts on the cq/pnrz5zhatm226v8c y+z zb,harge at the origin?

  Three point charges are located at the following positions: Q1 e;5govarqu-km9y2 u 8= 2.00 mC at x = 1.v;r9k ey-guoq u28a5m00 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 the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second s+qr9prij /((o. 0wzm-njrsvpoint 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 at the lower-left crn/jqov+-i pz.sr0r ( jm 9ws(orner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1,2 pog3pw:pue 0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of g:2e pwoup3p, the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 mpfwb9 6eet 86o, 0); 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 nC charowe896be 6 pftge?

  Three identical charges of 3.0 mC are placed at the verticesx1/ij5z ;d8plw+ ojpe of an equilateral triangle which measures 30z p;pd51jj wi/ oe8+xl 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, which are separated by 3.0 m. At what 7nh8;iijio8i point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting onioi 7in j8i;h8 it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where on 1 zm +yy7lji7lr; 2seithe l imi17jr27s+z l yye;x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x3(idf,w(zhgy vd7; fz = 2a. Where can a third positive charge +q be placed so that the force on it isdi7(vf, yz d3wz h(f;g zero?

  A copper penny has a mass mszukb+n/84.5 s mdfuof 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 by the attraction o7cp8.td emjj .f a fixed proton some distance above it. How .d.tej mcjp78 far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thread*ufz* j1/uiq cle +4ngs which are 30 cm long. Both are given identical charges, and the electrostatic repulsion4 +1ejuq u* c*izgf/ln 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 of the ,62+ut/9lgw tx8 t -xnvfoovyelectric field at a distance of 1.0 m from the n6,xu-9no oyt+tv28g /xtlfwv ucleus?

  What are the magnitude and direction of the electric field at a di/x 55uxbeoblfg(bg8rv 26d6oe; fw j )n*f)enstance of 1.50 m from ag ofx*e e ;rd)g65nnvbb(fwlo8f2) u/5jx6eb 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of f q9mlbs: hfg; wr1n1/a/n3 gfthe electric fieldm1/ aqfr9nf:1 ng h/f3s;b glw at the location of the test charge?

  A 5.0-C charge is 10 m from a small tesruv ym6m.3 2tdt charge. What is the direction of the elect 3 62ummdt.yvrric field?

  A 5.0-C charge is 10 m from a small test chass f.gkgl;y: 3rge. What is the magnitude of the force expe.3 s:gyfkl;s grienced 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 .j (e lo:0ieu nrgf. 3x4+lcywand are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charge 0g.3 flxicrn+jeo .w:e4uy (ls?

  A 5.0-mC charge is placed at no+va:*c 2m: ju;oi:bh fdz)w the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 c+oadz nbhj:2)v; i uo:*wm:cfm mark?

  A 5.0-mC charge is placed at the 0 cm mark of 3eh-snd eyw5:ns- 0+ytijiw : a meter stick and a -4.0 mC charge is nsi +d-te:50w3 -j:niyy wehs placed at the 50 cm mark. 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 i ,mouli/ *n m-lc4f8ec7j1mq i.fq j3placed at x = 0 and x = 0.20 m. Wh1u -*4l/f. iolj q3jcnfmmi8qec7, miat is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three mmwr1l9 ;o kkqrksh0n/ l)0 m)corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Fi 0mrh)/9;k knqw) 0m somkllr1nd the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargeslxm38,ga4 /3pocqeji x86z lt 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 centixto8g6em 8 qzjpx,la4l3c3 /er?

  A force of 10 N acts on a charge of 5.0 mC when it is place2n;n 4h,;dlrm5:p b we;r+d n xxo(efed in a uniform electric field. What is the magnitude of this electric fe he nb4rn+xn2ld ;5oxd(;:wpm f,r;eield?

  A particle with a charge of 4.0 ,(p*zk ygoe(r2/rgghoeb x9 /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 elect-t8 *izbjr4zbx;c zz )ric field of 6000 N/C pointing downward. What charge must be placed on the ball for i) z;8z*x b t-zczij4rbt to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball-zgth joq4y, ) is placed inside a uniform electric field, and is suspended against the forc4hj, gz yq-)ote of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm ut*7o ge3 6 (uek.bhdzcarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from tzeed u(o6b3hu.*t g7khe sphere's surface?

  A metal sphere of radius 2.0 cm carries ax1pr8l)pw fp- bit(9u charge of 3.0 mC. What is the electric field 6.0 cm from the center i 8wxrptfp)(lp1u9 -b of the sphere?