State the law of conservation m ikjiglp../ga4yd2ds u.; . dof electric charge.

  Is it possible for two negative charges to attmm.09.;4ob;yxl fqupvk(i pcs - ou*jract each other?

  Is it possible for a positive -jgp 9plqvc,rh yzu0e+09+8cc2krra and a negative charge to attract each other?

  A glass rod is rubbed with a piedbs 2 d-) esbw2q2ia3lfb5,x bce of silk. During the process the glass rod acquires fb 2-)2e,i5qa 3ds2xbws bbl da positive charge and the silk

  A proton carries a

  The model of the atom srsob:k1w7c,3qo( ipd hows a

  A neutral atom always has,u b, pn+mdvnex6 :;jy

  An atom has more electrons than protons. Thvbk .cspr4osb. 2nr )1e atom is

  Materials in which t sx n44hlu0gx95sw3ophe electrons are bound very tightly to the nuclei are referred to ao 4435usgnp 09hxslxws

  Materials in which the electrons are bound very loosely to theq:6qk;qqdbm6 k hvvb(t8e 1v/59ros4 iu;uiw nuclei and can move about freely withi8tu5qo; ;vb9v 4 q 1 h(ekw: iqidms6ur/vq6bkn the material are referred to as

  A negatively charged rod is brought near -4h2k hnnt; *a odfp- l9 i9kvg5+nfsione end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be n9g-4li *k an25 -pskv9 doiffh t;nh+charged

  Sphere A carries a net positive charge, an.no)iizj oq.sq 7r/lb8js,7e d sphere B is neutral. They are placed near each other on an insulazq lsj, q/joiino)7bse78..r ted table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positi(h+p *,ml*w+ 0jx astydqiq j1vely?

  An originally neutral electroscope is briefl33fwa j uhxnu1+,g 6dfy touched with a positively charged glass rojfg+ 3wh u ,nd361fxuad. The electroscope

  An originally neutral7r3-xtgbxi - b electroscope is grounded briefly while a positively charged glass rod is held near it. xbb7tx-ri3- g After the glass rod is removed, the electroscope

  A positive object touch,zral sf,h )0if/q- d*u5sfny es a neutral electroscope, and the leaves separate. Then a negative object is brought near the electro ,fi flzsn s5/qf ardh*-)yu,0scope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mewpj.bk-g o 9zxvjt094tallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallicojbjtpg .0z9w4k xv 9- 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 Coulomb co /aal:xytyn9 d f xjg:c4-30minstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The f.8x ckzfi 9hi56dnyk/xt(y a 6irst charge is larger in magnitude than the second char a 6ixzxfdc5thk/9y8y( nki.6ge.

  Sphere A carries a net charge and sphere B is neutral. Theh-b-b8v wf6:spmc,z ay are placed near each other on an insulated table. Which statement best describes the electrostatic force between thecsfwa m, b8zpvb6-:h-m?

  Two charged objects at qwlrqx *;n24d+y /wd8/+yhqkdyl;kj tract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betweenj;wy+d8+yr2l qk /xl*/;qq4kd hwn yd them

  Two charges are separated by a distance d and exert mutual attractif npk:lb9*::zad uqjr3ss g51ve forces of F on each other. If the charges are separated by a distance of d/3, wha k g1p:lzfd* 5b s3nq:r:9ujast are the new mutual forces?

  Two charged objects avkyh:y-a 6f1(q tmlg-v4y5ldttract each other with 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 to one-f1l my5 lgaykv6--(vt hqf4dy: ourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happ1) 8gtvpc cv/,km 2xoaens to the magnitude of the force on tav8o km/x)p c1v g,c2the proton if a second electron is placed next to the first electron?

  An electron and a proton are separvmoc0x qk, m. 2s4i+ufxjf,3te9g: e uated by a distance of 1.0 m. What happens to the magnitude of the formxtu4f., xgqck0mes :fu+e ,ijvo293 ce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens t-s7) ylp yvca;0/ txlho the size of the force on the proton if the electron is moved 0.50 m closer x )sl0ahp;vyclt7 /-y to the proton?

  A point charge of +Q rx0al8k:(fm6 84yoa n 8pakl kis placed 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 ce6a4xo y kka8nfl0: 8(klmar8 pnter. 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 centroid of an equilateral triangle. zk eti,0f4sggwr.6tu2l47y w When a second charge of +Q is placed at one of the triangle's vertices, esl. 4i24zug yr6ktftww7 0,gan 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 nofz ;deru3u4 x-t a vector?

  At twice the distance from *nv.ki qo4 w+ f/ff*8tm*0 m meq2bhhca point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posixioklp hsoclp6: / 3(1e86 dtjtive ch i(6pk sp68locodx l/13e: thjarge along the line joining the two charges?

  Is it possible to have a zero electric fiel4 be acxj8 rvm)o9t.u+d value between two positive charges along the line joining the two charte89r4ubv aj oc m.x)+ges?

  Electric field lines near psit ./z;ly 1nyiv 9zvznr+ive point charges

  The electric field shown ;u z q4p0 lyg,nf5r7fd

  Can electric field lines intersecb 9:wpdd (vj7br ady82t in free space?

  A solid block of metal in electrostadgq 4 fk1g3t5btic equilibrium is placed in a uniform electric field. Give a statement con tfbg1k45qg3d cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow 1gwwu4 ezlw3as iljc,b b 61h5/iv+0pmetal sphere of equal diameters are each given the same charge, the electric fieli6 au l+bbi 0 wvhelsjw,cg54p1z 1/w3d (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table +(.-cw*rens5 :t eztady e (dwin a region where a uniform electric field is directed straight upward. What can be said concerning the sdz +e c(entwy.:5*erd- a t(wcharge on the block's top surface?

  If a conductor is in electa20uj1jow)7vl hs umae r8,y+rostatic equilibrium near an electric charge

  A positive point charge is encaq/i43 qvrrm5 h*0nnwo r0gw3 losed in a hollow metallic sphere that is grounded. As compared to the cas4*qrh wg 0a/or3 mnnqiv 35r0we without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in :f-y z/x .5kcc gyoeuif2 cams0 e,(l.static equilibrium.

State Gauss's law.

  The charge carried by one e0w1x 53 cybhvblectron 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 hasd aj7oj7r1cg * a net charge of +2.00 mC. How many more protons than electrons does this piece orjg 7ac*o71jd f plastic have?

  What is the charge on 1 kg of pr (ni8odlqz z/+ qh1/skotons?

  An atomic nucleus has a chargb* wul d7e0:rae 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 charge values bh-0t6)/ wjzd re:p;uist xo/of 2.0 and -4.0 mC, respectively. What is the magnitude of tdtxzr/ ;)/ ubt-i0:e soh j6wphe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 l h8(uucp+ ykt 3xey 1k+l:(qjN. What is the magnitude of the seck1hc+y(q(8u ekty:+l3 jxl pu ond charge?

  Two 1.0-C charges have a force betweenka yrvqz5u0/2 them of 1.0 N. How far apart are they?

  The force between a 9,le xomseggi+6 p8g0yv 16a m$30 \; mC$ 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 thmklu9m 5h70asey are moved to a new separationu 0ha95msmlk 7 of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fioaq7hpy,gd u3lt+ 3v *rst 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 whichqla+p3 hg 3y tv*uo,7d acts on the charge at the origin?

  Three point charges are placed on the x-axis. A chargm* xuu5 w7n5paz4s2 kf ;: zvbkb)j(bee 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 the magnitude and dires7kzbub5p) 4u:e5 vkbzj( mnxf wa 2;*ction 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 7hjw,g: et:6ffohv:eat x = 1.00 m; Q2 = 3.00 mC at x = 0;h:o:gv:wef,e7 f hjt6 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 p6*z/dnuqerh -;pcq-a:q*u:chw 6 ujaoint charge of -Q is placed at the c qhc6-6q/rnae: auuq:;* p d-zh*juw 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 nC fy;,fwk1a7 z5/ wwo zgis at (0, 0). What is th1wk 57/ywaz,f fw;gzoe 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, 0.10 m); Q bq236 2bi7 mmh*f,y9u ,c;hssxabqnr+xik5e3 = 5.0 nC is at (0, 0). What is the direction of the net force;62knar5q3hi9*umss qfmebi y b+,b,ch7x2x on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the re9gz;. zi qo+q9ps4nl8q0 ddvertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electqr izp9dl d9.nge+ 4 z0q;8osqrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are s9g08 u dgnznb-eparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force a0gzgn db-nu89cting on it would be zero?

  A +3.0-C charge is at 4yn hedpxkz*e ;q *kt70gb4dwx,w)6u the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forceyt *7 b0 kwg6*4pxdned;wu4 qxzk,)h e on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. qx81+2xexwt f9z uou 7 Where can a third positivfo qw9utue xz+8x1 x27e charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A yixp(-j s 9b t7hm87nn(1qub0e;orrgtotal 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 lkpzi k5uv. 7,l.e:db force of gravity by the attraction of a fixed proton some distance above it. How far alv7.pu.iebzd 5k l:k,bove the electron is the proton?

  Two 0.20-g metal spheres ar6spgfr (1v:reh z8jt h )jw:w6e hung from 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 awtgrf)(1 66ewzprvs: h8j h:jngle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wjdyaxs ismh;z(18( h; - )eosi mo2ez;0ovr)khat is the magnitude of the electric field at a distance of 1.0(s(d ozimh28hzxjk;; ya;)0eo is)mve rs-1o m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of/a):so,kojyk96nx xz 1.50 m from a 50.0-nC charge?n:6xza)s kyo jo/,xk9

  A 5.0-C charge is 10 m from a small test ch0bde* c13zs4 bqctd1eddubk- nv 3-g 9arge. What is the magnitude of the electric field at the location of the test chargee bddb1eg31 -qt90 vdc34c z-*udkn sb?

  A 5.0-C charge is 10 m from a small test charge. What is the directi:pvckfaaw27)k,ajni9 il lld82 t(m 5on of the electric fi d2a ni5ll(l29 i tfm cwk7:ka8,j)apveld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f ow8+j3j noz2aorce experienced by a 1.0 nC charge placed at the locationjja2z on ow38+ of the test charge?

  Two point charges each have a value of 3.0 C and are separateg,e xdt vmj y/s :8eaowu.m-(w82 vts)d by a distance of 4.0 m. What is the em ms-gjtd8ye,w.:s x(vao2etw v8)/ulectric field at a point midway between the two charges?

  A 5.0-mC charge is placed a dlwk w:(ja6-et4nb,6hu -hdht the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electricj6bwa:-n4htlwduk,e6( h dh- field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mChwxd4qw)ov7b)d8)9 uwi pd0d charge is placed at the 50 cm markodd7b9 w 4d))iwqhd8puv 0wx). 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 rfbnub 6tvk2ud y76(: 1pyo1a 8igqo5 placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between theugoor2 apby1718nqvtbk 5:y(id6u6f m?

  Three 3.0 mC charges are at th0 xcjx c n7tpgz4p-8hs:oxz0s3g 1ny- e three corners of a square of side 0.50 m. The last corner is occupied by a -3.1ps 0z-7hcxoy: -g8p0sxcn xgt4zn3j0 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/og/tnhelh sp..1i)j4s 7fby 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'47sgfo./ .1p)ylse /hnjibth s center?

  A force of 10 N acts on a charge of 5.0 mC when it is plaejicf w: dy ltsp2us8:(q1o 3,ced in a uniform electric field. What is the magnitude of this electric jq 1ps8ol,e(iu2:w f:st yc d3field?

  A particle with a charge of 4.0 tb 4g0z3 huh,smC 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 03 jz+eskk)610 l0iim6f sb dka.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on theiaki0k+ lbk606ms1z d3e)js f ball for it to be suspended?

  A foam ball of mass 0.150 g carries akr8q x 441df qk tfqc)aim9,7m dzw4u. charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are th 4uqcm14txfk9miq,84.z qadfwd )7 rke magnitude and direction of the electric field?

  A metal sphere of radius e c429y fv:l06pp g3txnnxyt5 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's xp53p9:lt ve4 2nyt x yf0cng6surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0b8 r1dicu.pn m+:uo y.6 pbf8w mC. What is the electric field 6.0 cm from 8p:i+u6 ymfrp8cuo. .b1b n dwthe center of the sphere?