State the law of conservatioc,yfkqgf6mm xwrou4 *3gb ;m.xj;, s6n of electric charge.

  Is it possible for two negative charges to attract each ots6)g4mic i dq j2qew/8 bogg34her?

  Is it possible for a positive and a negative charge to attract each-nl um ur,qg9l 9+o0iip;pq+ u other?

  A glass rod is rubbed with a piece of silk. During the process the glas c)i:4 usr 3wg4mn.zfas rod acquires a positiwnf rg.4 34iumc):zasve charge and the silk

  A proton carries a

  The model of the atom tc 7) 6(9 bqa5e(s4mhzxpyq kut.vfc9shows a

  A neutral atom always hasonv cky/wvbz(:x 4 x99

  An atom has more electrons th1v1ar/ohctpx0vi2b 4)2fz kzan protons. The atom is

  Materials in which the electrons are bound very tightly t,(4sc0e ffoi/,zt 5phf/zwt(h 0h x cto the nuclei are referred tooh /fz5hz 0xpit0s /ceh(fc4,t (fwt, as

  Materials in which the electro(-+ghn zrx6 ugns are bound very loosely to the nuclei and can move about freely within the material aung6g+( h -xzrre referred to as

  A negatively charged rod is brought near one end of af feh2r x0*mr(t0bpnt5-ht2q n uncharged metal bar. The end of theh x*r2-b5h efm nt0frt qp(t02 metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are )g0 +1kjdegi0jfy1os placed near each other on an insulatg0 ig1+ 1oe)sfdjjyk0 ed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ,a.ij yza1z1 fcharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivee- wq+m u +*oaqdh x bp1r(axusv/; .cmtcv47-ly charged glass rod. The electrpcv mx dxbhar1q-uq +4 .m- souv7+;c( *at/weoscope

  An originally neutral electroscope inv etqo57 q/0xs grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electros oq/nv5t 0xeq7cope

  A positive object touches a neutral electroscope, and the 2dhwbwvda9 :.2a/uy dleaves separate. Then a negative object is brought near the electroscope, buw/d2b a y:2da.hwd9uv t does not touch it. What happens to the leaves?

  A large negatively charged s4 ,w fa.fg-ssjl5z2oobject 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 ball touch the negative object. What is the final charge on each b, zosj f4lw-52gasf. sall?

  Charge is

  What are the units of the Coulocc+7gvipho6k g+ra;-/ 3 x (ltsojd7 gmb constant $k$, which appears in Coulomb's law?

  Two charged objects are sep-tj0 eowgmymwo , k3mt :f4*d- kfpf;ea*5xw3arated by a distance d. The first charge is larger in magnitude than the second charge.yf*wmx-omdtopf:40e3,;5w -w kma 3tefgk * j

  Sphere A carries a net charge and sphere B is neutral. They are placed nearnxym:/e pff3-e 2 r)oa 3nxj;x each other on an insulated table. Which statemxy:; pe/fn a3 en2x fom)r-jx3ent best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charggxu*7e,po2 w pes on both objects are doubled with no change ip*w72 oepx,gun separation, the force between them

  Two charges are separated by a distah2 jri/18u9 yf9,ptlnn fb.vfnce d and exert mutual attractive forces of F on each other. 9rnj8/tib2u9np.1hvflyf f,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 thlo46 si) zvd i 0jvr-v;zcf8z;e force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original valu0 v;rs8)6lci-z zofjvi4d; vze? The force is now equal to

  An electron and a proton are separate(g. mn- rcr(dya*/sp kd by a distance of 1.0 m. What happens to the magnitude of the d (g*-. m /nrkcayrsp(force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated g :aeq4u+jd +xby a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elect4qj+da g:u+exron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What q;wh(ko q65qj z g;8 o4hm0dxlhappens to the size of the force on j d hz8 6mwg4lo0;qo5kqx ;q(hthe proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at r1l d*r4u8exz 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 zr1*8 deu 4lxrcenter. 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 ra2xypf7ip0 ,3v 5bbw at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostivwy0apf732b px5br, atic 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 not a vector?t1zm0 4ob ,m e3w c4si,*dkwi xa6nz:e

  At twice the distance from a point charge, the strength of the electric cb j1l6gow-6q2svfj *field

  Is it possible to have a zero electric field valu xfx1x/68kxdyznq:ow +k2b.u z8je5a4kvse - e between a negative and positive cv/ x5281d+e: e4xwqzf ykjbs 8ko6-znxku x.aharge along the line joining the two charges?

  Is it possible to have a zero electric field value betweenvlg p9bf*2f9i;8w w24lnfmmt two positive charges along the pb 4fimlwnv g8t2 *lm 9w;29ffline joining the two charges?

  Electric field lines nehcmq,w) /t5pdt7 mleh 5.*x yqar psitive point charges

  The electric field shown )srn,;v hb mh+

  Can electric field lines intersuuqq.8,co2(5xw isi3w r6s eaj1g 9wk ect in free space?

  A solid block of metal in electrostatic equi56hd-n pewa q;librium is placed in a uniform electric field. Give a statement concerning the elect-p;6 5d hawqneric field in the block's interior.

  If a solid metal sphere and a hollow metal sp2yk2f dug.g + uqm8z 6jnt1:ichere of equal diameters are each giveun:6g 2ufg 8izq. cjyt+1km2 dn the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodenox/0n0o*tjy iw ywn 89 table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bj *00ooyytn9w xn8i/ wlock's top surface?

  If a conductor is in electros4vrxij5 u.n 29nzmf(static equilibrium near an electric charge

  A positive point chargee2uysg2k) i -r is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dire-u sy2gk2 )eirctly above the hollow sphere has

State three properties of conductors in static equili+6on:v5yizvh/ nrk p/ brium.

State Gauss's law.

  The charge carried by one electron is:eto7lg 8x9no $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.03:0rqe6iw(iccy) s tg0 mC. How many more protons than electrons does this piece 3y g i s:c0w6triqec()of plastic have?

  What is the charge on 1 kg of prsw d-*ro: d1pjotons?

  An atomic nucleus has a charge 4l;n* qjqv s/qof $+40e$. 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 2.0 awjiz ueef,q0534m e-0imfkm 1 nd -4.0 mC, respectively. What is the magnitude of the emfmz ue0-ke,f1w im ij0 q543electric force between them?

  A 1.0-C charge is 15 m from a second u(s (t2/fcr -hwii,l wcharge, and the force between them is 1.0 N. What is the magnitude of the second charge- ,(i2rscw(it /lhuwf?

  Two 1.0-C charges have a force between them of 1.0 N. Hoy3a) ef d.4gc zpl14d t3ddqx2w far apart are they?

  The force between a h8z*krnskt jv-0n q8 iim.f96 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallw-wsnas ; 8ksj25 ;gg,o+t b:wvgdy-fy 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is tk;ftyb;w-jg 8w+sn g :a,ds- wo2s 5vghe electric force between them?

  Three identical point charges of 2.0 mC are yj/bwp kqew x /io:v7d5 0a.o+placed on 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 magnitude and dir7+k:5 qxojd0v.y w/ ipae wb/oection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on -acjb.o,rjay/9ca6p (bd am kd384wx the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm,c4a3 9j ,ab8 barwdm-/d.cykxa(p6jo 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 pokeo (w4e2ku bfv.m.u j2uev(3sitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.0m e. uvv(( bukuew3k f24j2e.o0 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 secondstfjxpg6 ;85u2t1rx g 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 t rjxt18 psx;f6 gu5g2charge 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,u-whfaa kuj:+k:qyo ti ivjls1) 1, 0p79i2qq 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What u+kf,isqlkqh9i): 7j: viy1o0au-at j 1p2 qwis 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, 0.10 m); Q3 = 5.0 nC is at,nup kao86ykktv-5, n (0, 0). What is the direction kau8k - ,5,p6nt konvyof the net force on the 5.0 nC charge?

  Three identical chargevoa9oys a7yr96t0dj dmoi .k ,:78akn d6dx:as of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the e i,6jatk.7so a ::d7k aor 68vdnay9xydm9d o0lectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wcd ozwe,vtxsy: 67- ,khat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on ,d-s6xo ,7y wtczv k:eit would be zero?

  A +3.0-C charge is at the origin and a bbw(nik4sb9 3+9.0-C charge is at x = 4.0 m. Where on the x-a w3(b9k4b bnsixis 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 x = 2a. Where ch a,lb11gsuw0 an a third positive charge +q be placed so, gw 1au0sbhl1 that the force on it is zero?

  A copper penny has a mass /xul49,bkam h of 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 a8vfcs m-m3k- mgainst the force of gravity by the attraction of a fixed proton some distance 8v -mkcsm-3mfabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondu nrytay d81cjwxt3/ocmqo3d68) * 6eocting threads which are 30 cm long. Both are given identical charges, and the electrostatic repoc6)ywermo 8* 3xq6j3tc/dd8a nt yo1ulsion 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. 4acmwu *5vzk7 6.vsi af8vv4g What is the magnitude of the electric field at a disiv7.448g fa*vm kc6v as5vuz wtance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electri 7kbg(up:lj5x c field at a distance of 1.50 m from a 50.0-nC ( klbj5g7x u:pcharge?

  A 5.0-C charge is 10 m from a small test charge. Whay((cd6 drn8x+y;ybig)gj(l o +-zefl t is the magnitude of the electric field at the + g 8+x)6izyfjcb( ;rgne( dyl-oydl(location of the test charge?

  A 5.0-C charge is 10 m from a small test chargeyvhra. i;48xfxq/jfoi2ngh /w 5v7d 5. What is the direction of the electric field?wq;7/ 5fdg8r4ohvijvx2. y /nahif5x

  A 5.0-C charge is 10 m from a small test charge. What is o((hwzb9v)gum7f* jo the magnitude of the force experienced by a 1.0 nC charge placed at the location o ufjvw( z(b)9*7ohg mof the test charge?

  Two point charges each have a value 9 n7cm1f )du,jc4z2qd,mu1oapa 9nil of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwa94ocnl9n,az uip dm,u21f 7m)qc d1jay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mej,ozu qo-jctj91a5s ,ter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elect atoucq o-j9,5j,j1z sric field at the 30 cm mark?

  A 5.0-mC charge is placed at trhfu p ;-6ez)bhe 0 cm mark of a meter stick and a -4.0 mC charge is ple-f;ub zh)p6r aced 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 andulu33t1 o1jgu1f g)ox41yb afe )*jnj -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the 33f1 afnj)111ty eu *xo4ubul)jggj opoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 mp2a:wg/y ;qe lf*9bu h. The last corner is occupied by a -3.0 mC charge. Find the ef2 py9; lwe h/g:*baqulectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners j w 6i-hmwfiui6 v*pn.e:e..a 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 cen6*aw:ihei- .e.i u .vfw nmj6pter?

  A force of 10 N acts on 22m823xszjw n jry07ry*grai a charge of 5.0 mC when it is placed in a uniform electric field. What is the magn2ns wxi*g223zyar0ryjj 7r m8itude of this electric field?

  A particle with a charge of 4.0 mC ha)s3w v tp3*heqkli p+*s 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 electric fijy ;fl d6l154vf-zsxnt :bp/ neld of 6000 N/C pointing downward. What charge must be placed on the ball fo 1nz:jl/t-nfsp 6d; x byf5vl4r it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball isxxqz7x rpf 24od.3il , placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitudl3r4qz2 x ix .p,xfd7oe and direction of the electric field?

  A metal sphere of radius 10 cm 8(g ke4sd8tu cw1hpmf 6f6z z)carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere16kz hfu6 4ste8m(dc)z f8g pw's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.sxt,lwdp((17f r iwb.0 mC. What is the electric field 6.0 cm from the (is( l7d1pbt .xww,rfcenter of the sphere?