State the law of conservat2 5cidxe tv(((qlf3tex) ryz7ion of electric charge.

  Is it possible for two negative charges to attract each ktvz 9p; a +50molkns5other?

  Is it possible for a ;i)kk ;0jv;+ykbpeea oq )6p(jwh s r)positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk.d juwzld bb ch72+j56, During the process the glass rod acquires a positive charge and 6w 2, bh blz7d+5jdjcuthe silk

  A proton carries a

  The model of the atom v51 uvf 7vbdc(shows a

  A neutral atom always haa1fo bb29byk6yw6 b6/ /ttoexs

  An atom has more electrons than protons. je. ;-2ya76:gquan4zfmf n7 kisk :vy The atom is

  Materials in which the electrons are bound veg8ajdd xb8p8wp h0 2t-ry tightly to the nuclei are referred to ad0xw2a phtdjp 888-gb s

  Materials in which the electrons are bound very loose) 7 e1wh3k0)ucnsjvyp n 1lzb-ly to the nuclei and can move about freely within the1h cw -bl3)pke)1jn0 zsy7uv n material are referred to as

  A negatively charged rod is brought near one end o;+ q y:tubx;hof an uncharged metal bar. The end of thxq; +t; oy:ubhe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are place s5 m)wor6ia kb;k;b8tj+ob2i+d d0 egd near each other on an insulated table. Sphere B is briefly touched with a wire that is grounderig+km 2 0;;sbtb odw 5abd8ki)oj+6ed. Which statement is correct?

  How can a negatively ckr1yh+.le6 9isokk8,y hoe5 uharged rod charge an electroscope positively?

  An originally neutral elec/ ndy3-axs ilrxd+(,t4 da rw+bo q4u1troscope is briefly touched with a positively charged glass rod. The e4b u3 a ,y-/d qxrio1(dxsd+4anwrt l+lectroscope

  An originally neutral electroscope is grounded briefly while a posiqa)+p5s)eowb a v93u;+il cmi tively charged glass rod is held near it. After the glass rod o9q pwl;))b+ cavs+uieia 5 m3is removed, the electroscope

  A positive object touches gu46aax btb:0* gl t5aa neutral electroscope, and the leaves separate. Then a negative object is brought near the electrx04u6 5:baaggtbat*l oscope, but does not touch it. What happens to the leaves?

  A large negatively charged objecigf2qm nqvmn;w(-: pb;0i +rla 1iu(p t 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 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 ballm:qw li-a+i (q( 0b2mnrp;i1pvufn;g touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of ,eq( e cqdu+6d0(uhv athe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated/s(ps4 9 uqhlc by a distance d. The first charge is larger in magnitude than the( q4spsc9ul/ h second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nk-ysqel5t4ih c3g+ .j. mn1vs ear each other on an insulated table. Which statement best describes the electrg 3h4iy em -5lnqk+sv1scj. .tostatic force between them?

  Two charged objects attrat4iv)vqgbi3bp v5+2 w8 t bjg;ct each other with a certain force. If the charges on both o4+t vb2b5vtig;bv3pj 8g)wqi bjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutz:wr hm76je8av-z u 5mual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual force7a 6r:uwe jm5hm-zv8 zs?

  Two charged objects attract each other with a fkt.nywy9:9 dgojlf/ 0orce F. What happens to the force between them0l y.9jndw:gt o9fk/ y if one charge is doubled, the other charge is tripled, 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 ar(n x.o:csf pyjgd8 1g5e separated by a distance of 1.0 m. What happens to the y:.s pgxd51j8 n gocf(magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by 0,xm q r9dif+t scso9r3q9zm0 a distance of 1.0 m. What happens to the magnm0c9s +s3o ,rt rqif 09q9mzxditude of the force 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 tfk*pr z-x8n ,k-juv 3ao the size of the for*fprvak 3zn- x-ku8,jce 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 squarx77owq 7 fvv59 nkm9rle. When a second point charge of -Q is placed at one of the square's corners, it is observm75n7kvrvx9w o7l fq 9ed 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 the square?

  A point charge of +Q is placed at the centroid of an eqg 6mde7mhue*9 uilateral triangle. When a second charge of +Q is placed at one of the triangle's eh7 dm69m*e ugvertices, 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 vertices?

  Which of the following is:0rl1 dpqlsv(c7* f vr not a vector?

  At twice the distance from a point charge, the strength of the g q1iy54pk c4qelectric field

  Is it possible to have aem m- xnspig5w7v- r 6de4i;p: zero electric field value between a negative and positivm-ewmg nr4-i vpe6xds ;p57i :e charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two p97 qngb)n /*ru w.cahkositive charges along t)/nqh7 kn bruwga*c.9he line joining the two charges?

  Electric field lines near psit;j(/tl v+ khrwj g5em1ive point charges

  The electric field shownf hzy s,-z5vq,

  Can electric field lines i. 68ps;kt-dajv xsx.naq- a :xntersect in free space?

  A solid block of metal in electrostatic equex2peg* db 8dy3qa1-cy w)a bbn/-n9 vxb.3qzilibrium is placed in a uniform electric field. Give av ab3gdacyxw *d3 1 bq)nz9-nb/-. ye28pq ebx statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal d.5xyvw9 ik3xqgm+:;l gyb8 qebzb gje :nt-7(iameters are each given the same charge, the electric field (ezgn g :.y;+8 ybki5x:9v-m3tq(e 7jwxl qbbgE) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a u4unl;+ v k50mvm16 )iia.cbbc-xkvt6 gr1 qg yniform electric field is directed straight upward. What can be said concerning the charge on gxn 56alqk1c) c;yb-vt4vb +r imm 6ku10ig.vthe block's top surface?

  If a conductor is in electk e+,,s jhzty**0skpy0 ncc un/-gkc:rostatic equilibrium near an electric charge

  A positive point charge is enckdan . -.za hczeq8n*;losed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field ah;-.anzn e.dk*z8cqat a point directly above the hollow sphere has

State three properties of h;k i4l,khpun .l7.ycconductors in static equilibrium.

State Gauss's law.

  The charge carried by one electronv7 3ouuhes5: g 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 ufa j 5p 788onrmv44(1jida mhg*tvp,net charge of +2.00 mC. How many more protons than electrons does this piece of plastic hpu7fm 581rpm*,j vv(hj 8oa4 dngt4iaave?

  What is the charge on xsbyj /w2mkury0 x-6, 1 kg of protons?

  An atomic nucleus has a charge of g cx:qol neb 9y*-*ac.lu5r,kntzuuv0 20 ao: $+40e$. 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 of i3 t40 e8jlwrrdb1bu92.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwb01ji3u8l 9rr 4t dbeween them?

  A 1.0-C charge is 15 m from a second cha fz 13((fir;+am) z*nyuwvgqp rge, and the force between them is 1.0 N. What is the magn)urmf p i;+ z 1g3*zn(fwqyv(aitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hon/ra x4la-pa:2 n 7dvvw far apart are they?

  The force between a ks7ro sew,fp5t)yr61p*r / tk$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm-y3k8v khynv ::i/hzk apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electrhikk8 /yvyz:khn3v:-ic force between them?

  Three identical point charges of 2.0 mC are plac0gd1r l +/spafed on the x-axis. The first charge is at the ori0prl d1fs/g+a gin, 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-;z sc z 7je,irlnqhok;m +h5.;(uwt aw3f+ qm6axis. 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 amn,;azm7 +;cwhtko;sqr+ 36ef hq ui w(z5.ljre the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are8uqya-t-u tjth;gqr8:5v0qgb. z/ ak located at 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. What .b atu kjag /t- 8z5uv0;rytgqh :-qq8is 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 secos5nq/psol/;558j /nma sa1n9 zk is8.uiztvend 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 on the center c/ozsqm8sp snns8 knvi9l5/u .e 1/zaa 5t5;ijharge 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, 0.10k: qeh6tf vm+8 dxp7l. m); Q3 = 5.0 nC is at8.tqp fm :l+ked vx6h7 (0, 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 (0s07b(gp8 o: fe vmoua6, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of e6ao7uvfs p08( b:mog the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plhr.*sgvz bac3x a.)qa0eoaf( +3t- bcaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of tbacb +0 zxq .tecs3aav)(rhgf.o *3a-he electrostatic force which acts on any one of the charges?

  Consider point charges of +, e-f-w ky1gpxyw2bs5 Q and +4Q, which are separated 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 theysf eyp1k b5gxw-,w2- electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4a-u;k;8 u5n,fqy avqm .0 m. Where on the x-axis can a third charge be plu 8-;,aanfmvuy;kqq5 aced so the net force on it is zero?

  Charge +2q is placed at the origi s39n) 55 qqmaehywsnh-:orn)n and charge -q is placed at x = 2a. Where can a third positive charge +q be placedq :wq) no a9hn5-3 mnryhs)es5 so that the force on it is zero?

  A copper penny has a mass of 3.0 g. c e(vvywfz5 ;98z:l2lyjj4f g 3mti)n 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 ch leb p+q5qa4 u)h) lau8k7gj l7*;ysof gravity by the attraction of a fixed proton some distance above it. How far above the elelh7aj;+ gbklqyup lu)h4c s)eq* 578actron is the proton?

  Two 0.20-g metal spheres are hung from a common j-nj lu79wg5hi+es 2 lpoint by nonconducting threads which are 30 cm long. Both are given identical charges, and the ln2jus+ew9- 5ij h7lg 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 )m42,8 w *2ukytenw0n smrwc rof the electric field at a distance of 1.0 m frosnyn 2mm42 ret,8w)w0ru *kw cm the nucleus?

  What are the magnitude and direction of the electric fieldrz9 k /8;rawhif-+ ch6t o clac/2jyi( udp:4v at a distance of 1.50 m from a 50.0-nC charge?zl:h6;2(u c/+vp kiafh coj d/w8i 4rtca r-y9

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of wbdnrn4045k*cw yy:gsj4(w qthe electric field at the location of the t4d sbjk4w nc* ywg:54w( q0ynrest charge?

  A 5.0-C charge is 10 m from a small test chjwbly4 uo0.xf e9ap z b7i0.k.arge. What is the direction of the ele 7.k.zbx0 09oayie4j.uf w lpbctric field?

  A 5.0-C charge is 10 m from a small test charge. Wh gp++7ev*9mmkgf*ajh* c, re wat is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?ejegk*r*, g hwv9mf+cm7+p*a

  Two point charges each have a valuewvqw ) (y, 2vqelq6ez* of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwev zqe 62wqwy*l)e q(v,en the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a pheis,st0.*h7atm imq.e-o2 ye ou )4 -4.0 mC charge is placed at the s2i,sa0q miye *).o4o-tt uhh.ep7 em 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ma,0twuah* , jtyrk of a meter stick and a -4.0 mC charge is placed at the 50 w0htt, u,yja* 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 placed at x = 0 and x = 0.20 m. s,kc,xsrp8 q re.j31-hflg t+ What is the magnitp-qsg81hkcxe3 +ljt fsr,,.rude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a6xl f wn-j5b2aiid 70z square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the2 0-5wfbnax7jdliz i6 electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl4a81s x,ghcpky ng ;;c d/2i-0 pxddwlaced 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, c2 dlwhkd,g; pp1g ns8-ya/ ;xc dx04i1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a chx i)mf565qfxs j p 0ygj3xvass4 (3m g-nzcc68arge of 5.0 mC when it is placed in a uniform electric field. What is the magnitsagm(6ymcq-5fsx4vx f 8pn35jcz x) 3si6gj0ude of this electric field?

  A particle with a charge of 4.0 mC has a mh.u:p yj;y8 r jzs8d,uwlg60 iass 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 dqz oqm2 89vj)uo*n*w 6000 N/C pointing downward. What charge must be placed on the baluqdo q*z*n82)9om vwjl for it to be suspended?

  A foam ball of mass 0.150 g carries a cs /i((2u 3m/d b l 097rkfq1ek6sddhjwerr0lm harge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitd1 /2 ils39 hw7ef0l erbrr mjukd0d(/mkq( 6sude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chb+oan8q: qv5harge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from th:vbq8a 5+qo hne sphere's surface?

  A metal sphere of radius 2.0 cm carries a cht:oz oqw w0bk5ui:-yl t6p0 5w qs7(igarge of 3.0 mC. What is the electric field 6.0 cm from the centetz5g 0:q05t:i-swyo6l oqw u k7ipb( wr of the sphere?