State the law of conservation of e.jauwqq/+a- electric charge.

  Is it possible for two negative charges to attract p7uwih:sds125l4ooz() qd mfawah 90each other?

  Is it possible for a positive and a negative charge to jhc.i0;2 y87hwwd bfhattract each other?

  A glass rod is rubbed with a piece of silk. During the process tb44npsmvi:h7;0 v wsyhe glass rod acquires a positivevip ss n;wbh40v:ym74 charge and the silk

  A proton carries a

  The model of the ator;t rad2uf 4 azmxx.3p .2*pxocw78om m shows a

  A neutral atom always hay+khgvxe-r ,/s

  An atom has more electrons than protons. The at:qrcp -tq. ft8 -0przyom is

  Materials in which the electrons are bound very tightly to t5 nb:7 m5s,wksheue zbz42ngskvx7) :he nuclei are referred t)2s :gs 57:k e5b4mksx nz wveu,znbh7o as

  Materials in which the electrons e:se 7r 0uw+gn8rw 6jaare bound very loosely to the nuclei and can move about freely within the material are referree wrae68+suj7gnrw 0: d to as

  A negatively charged rod is brought nef*b ,/g tlber4ar one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be r*gl ebb4/,ft charged

  Sphere A carries a net positive charge, andqwfgq.c h2 r. c1:r*7r-gyeqj sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched witg hgc7e:cqf.qrq.y*2rjw r1- h a wire that is grounded. Which statement is correct?

  How can a negatively charged rod ch-n5 :,(xjnrj o rm2ze d:oz.charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positive6qdx8.faegc8l8 /cqqly charged glass8lfc/ qc8a.g8q d6 xeq rod. The electroscope

  An originally neutral electroscope is grounded briefly while fz* maohc6/s id, l8,na positively charged glass rod is held near it. After th,n *s6hfzm8 o adic,l/e glass rod is removed, the electroscope

  A positive object touches a neutral electrosco- yofqqw+zxt 982ics ype((c:ci7j* mpe, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. W m( zq+es2p8 o(ywc-*7c 9y xicij:qtfhat happens to the leaves?

  A large negatively charget srs)aye5vxf.ep8b doy1:10d object 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 rolls along the path followe:r .x8fpyt e1s bad50v1 ys)oed 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 nf41j*s: ks++f smhl vconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larr qhayva85i+ ) pg*7vev jck8nmxu38:1 j8xl cger in magnitude tk npqv8y 7 xj5xci*u38)+gjm8vv 8rhaca1 :lehan the second charge.

  Sphere A carries a net char2mq,fzvam6fh. h40b-9.kxpepya s*e k 23hwm ge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic fq3zs6kbvw9..hpa*, m e-mym 2fekx f2ph 0ha4orce between them?

  Two charged objects attract ejkhvm:i( 5fed 9zqw:,y4w0ivach other with a certain force. If the charges on both objects are doubled with no change in separation, the f04:ifh d kiywjz 59vm:(wq,veorce between them

  Two charges are separatedw1 teoqt/f9u:i 2;5wb-m+dj r ep)je f 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 mutual forwtretife;d b51-/ :)jumqj29w+of ep ces?

  Two charged objects attract each othe l*zxfe6ccmh dl86f )2r with a force F. What happens to the force between them if one charge is doubled, the other charge is tripl hml 8d6fcf*l)e zcx62ed, and 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 sjj(s1j dc*w.lqo);l do *m f/geparated 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 firstlwcoddjj 1oqjm*l s;* (. /f)g electron?

  An electron and a proton arsbj ; j b.ztk:h(.mdb:e separated by a distance of 1.0 m. What happens to the magnitude of the force on the first b(z; kj sj.md:b.t:bhelectron 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 ha02gp fsv pgzzs8 1r60vppens to the size of the force on the proton if the electron is moved g 8pssz 6v2g0vp rf1z00.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squark:,(nc.rwg9 fv ilje,e. 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 jr,vgk.ei, :9(wf ncl 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 is placed at t:ow:o8u )r fsmhe 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 force ro os w:8:f)muthat acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a cssypn5 96:it vector?

  At twice the distance from a point charge, the strength of the electric fiefrg nlw6a wh7be6(32dkb bc6*ld

  Is it possible to have a zero electric field value between dn evf,/b,4)5nh mpdid y/6 iod kg*/sa negative and positive charge along the line joining the td,,dmb6i5gn/ niv )/ dfk oe d*hsy/4pwo charges?

  Is it possible to havi yi48yzn4x3g e a zero electric field value between two positive charges along the line joining t43 i8i yxzngy4he two charges?

  Electric field lines near psitive point cha :lygefz; 8)7ezm.vss rges

  The electric field shomi,pa)i ,ma,p urbo)0wn

  Can electric field lines intersect in free spaw 7lw.h1ck:: b :os+ur)xivqnce?

  A solid block of metal in electrostatic equilibrium is placc3dg 3ov+ .np1pzt*8 rs/ kqswed in a uniform electric field. Give a statement concerning the electric fisp1* c3to/v 8pg3. znsr+qdwk eld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters nhrnt*gp 7:s2 are each given the same charge, the electric field (E) midway between the center ang2n phst*:n7r d the surface is

  A cubic block of aluminupa*(3 l* f1kso p*vz6k0dkw*lq dr5s +xm+nnvm rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top su5d lv n m lkn0+kd r(+vapw63z* o*q*1kfss*xprface?

  If a conductor is in electrostatic equilibrium near anx4u5 juf;mjz ,m-jm;k electric charge

  A positive point charge is enclosed ilw8qh 6 ,nc /fvsok73vn a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electrq7 w/o v63csn,8kfh vlic field at a point directly above the hollow sphere has

State three properties of conductorsrwpou ,2nht ,0bvy9uz*xv ; n) in static equilibrium.

State Gauss's law.

  The charge carried by on2eg8b(ih ab, we 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 manwv c-p0qegwc4l9. j;zy more protons than electrons does this piece of plastic have g-zl. wec0v q9cw;j4p?

  What is the charge on 1 kg of protnw+cz (6y7avxons?

  An atomic nucleus has a charge ofkwjj2 2 xj.fhti;ou7na/28s v $+40e$. 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 e36zhsp49hhaza 75k p of 2.0 and -4.0 mC, respectively. What is the magnitude of th 3ehz7ph4 phas5k 96aze electric force between them?

  A 1.0-C charge is 15 m from a s *a6zt y px,p0xnkz1ki(ms);gecond charge, and the force between them is 1.0 N. 0ntky,pmaszx)(1z k6x*g ;pi What is the magnitude of the second charge?

  Two 1.0-C charges have a qiz.d (b28l :hwyz0m,zdfy0d force between them of 1.0 N. How far apart are they?

  The force between a o6qwi 753 aqiq$30 \; mC$ 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 the w/p57nr ycsiw52iy(ily ck -nh72ye*y are moved to a new separation oi/w 7yyisn *riecc22 (h75n5yly pkw-f 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axi)qk47rdx kj b1s. The first charge is at the x7b1dqk)rkj 4 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 on the charge at the origin?

  Three point charges are placed on the x-axis. qim8fjb .,pa/ A charge of +2.0 mC is placed at the origin, -2.0 m C to thpam,/b j. i8qfe 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 aj9f ,-1a9 ,vj dlidnynt the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 391a,jidnnvy-f, jdl9 .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 pkcr ej2zz;1 /am 3l8uo1ba jz9laced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed thamb2jl /r ak31a8j;czz1e9uozt 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 = -1gj f0u,7jb q,;6goe4vv65pv* c5 dhoiuki 0sk.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the negk6jojdf 6uq*4 iie 5ck7 00gb;vvv p,5o ,hust force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is 14kqlsx*ud)jz9:k k wat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcz :kjk1)lwd*suxq94k e on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterycz, 2:u0c4zbnn5efsac tp74 ej j 9y9al tr74zy4 zj:s 0fce 5n29 uybenjct,9cpaiangle 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 +4Qhovns o;y 6-n l89gf(k, which are separated by 3.0 m. At what point, onhk-y gv(slno;of8n6 9 a line between the two 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 t2 vwu.:vqzywk0, m aa5he 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 neuy, vwk av50wa. m2z:qt force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x 3xh zs:jgbzf( 9iv/0s= 2a. Where can a third positive charge +q be placed bsgz x30z( :fh i9svj/so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota) unkrcg )26dnn+g46 fwdgs 6.vred:x l 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 o o5thfjn/ un6 q*a+)cdf a fixed proton some distance above it. How far abon qt jou+*/ 6haf5cn)dve the electron is the proton?

  Two 0.20-g metal spheres are hung from a commo38jg)y byay) ru u4veyg -0w:37slogd n point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until yeygyrw8l 0)ob ) ugv ad3-j usy347g:the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Whf3 d* so,oa 7tb3iio/iat is the magnitude of the electric field at a distance of 1.0 m from the nucleus?o/*7ibf a3ioos,3 tid

  What are the magnitude anx0/ 9 sru gpaxxeeuwfdo:m ud1t3 ++(6d direction of the electric field at a distance of 1.50 m from a 50.0-nC char+1u+uro /69u0xmt 3(xf:s e gwddpe axge?

  A 5.0-C charge is 10 m from a small test charge. What is the magz;/j8j8 jrq+ei6hyd nemlwi2xs s4* u( -fn, qnitude of the electric field at the location of the test chnw6jxrdi+u-ey(ei4z, 8/*mfjs ;jq8n 2qs l harge?

  A 5.0-C charge is 10 m from a small t(h1bqsvrs 1 oo 7f wpo9t:9ki7est charge. What is the direction of the electric1 io qsp7rh 1vt997sko(bof: w field?

  A 5.0-C charge is 10 m fksv7sdd -(vt2 rom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the v-dv sds( 7kt2location of the test charge?

  Two point charges each suv- ,ki/g9e lhave a value of 3.0 C and are separated by a distance of 4.0 m. What is the /u li,vsg9ek-electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metekk erh,w) 5h .,8yt7abaodh,k xa (i*nr stick and a -4.0 mC charge is placed at the 50 cm mark. What ish7()tah*e,akdy b.kix 8 5 a n,hko,wr the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marwkm5iqwoe+ /.j*h.y v k of a meter stick and a -4.0 mC charge vmoj. 5k i+ ehyqw/w.*is 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 ;hour56d-i 6nptrpk7 .0 mC are placed at x = 0 and x = 0.20 m. What is the mr-un5 k6d;hpi 7tr6 poagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three z6/m o tx8 j h)px8j:nsvch6;g ,bkhg(corners of a square of side 0.50 m. The last corner is occupied by a -3k 8h vnmj ,;chs8(/zj 6):ot6hxpbggx.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m oh2x wtv/+y8 can a side. Charges are placed at the corners of the square as fot2vhw/ +a8yc xllows: +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 electb(da jw uj8oh6 1r7zxhu+rz/*ric field. What is the magnitude of this electric fiel 8r+*buz 7r/6hj(dxhwzu o1jad?

  A particle with a charge of 4.04bmxyoa x /z8+ 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 electrm d3 5o9n-at8oa- z a8s 8gsvm5iu+zhyic field of 6000 N/C pointing downward. Wh- m8 sg9hzu5 -sdviytoaa835z nm+ao 8at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0 1-;ysu zc,x.i.ehlz ua6mow r+o( 7y on+nmc9.150 g carries 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 magnmomech.ncu+9u ziz yxn,yoo 6 +7. a r;-(wl1situde and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is ;cbgm6wci0zygv2a 8oe, gv ::the magnitude of the electric field 5.0 cm from t02g8cc ggaym::b;ow6 zvvie , he sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is tj 1e+/clr4iia*tk /pn he electric field 6.0 cm from the cre1 /cjati4lp +n*ik/enter of the sphere?