State the law of conservation of electric h3s:;reg0 rql/zqads.yr9/s charge.

  Is it possible for two negative char. (ztysku i,t w f -l/0pywh(-qrth8w*ges to attract each other?

  Is it possible for a positive and a negative chalqpf s 454wf;vvr;iv ;rge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process 1m eo gii/bwib)5dg (*the glass rod acquires a positive c) idi omgbbg/15ei( w*harge and the silk

  A proton carries a

  The model of the atom shows *f cget0l6z sid cuzbx;1 0i4:a

  A neutral atom always k* s,aut s;5mvhas

  An atom has more elej nlg1x hj (+*:qdkmg;ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucl - yke ,k.8*nkoc:gjqoei are referred to aky:8j nk*.e g o,ckoq-s

  Materials in which te fm +pisv3f+h/1we xx7ct3u:he electrons are bound very loosely to the nuclei and can move abwfe+c/muxt i e:31h7 vp3x sf+out freely within the material are referred to as

  A negatively charged rod is brought near on q.tmi l 9vm7(/b6ktqqe end of an uncharged metal bar. The end of the metal bar farthe qt6 mb(vqi9qm./ klt7st from the charged rod will be charged

  Sphere A carries a net positive charge, and spvi h9 7:0iponk)p*uclhere B is neutral. They are placed near each other 0:9pnolk* 7)cv hpuii on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargekl 5z7:pfr6t-ie0stw an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargedohd6 soypz 36okst( +ff y(t2) glass rod. The electroschssoz f(o6 yt )t+(y dp26ok3fope

  An originally neutral electroscope is grounded briefly whp(kg84y qv0ymile a positively charged glass rod is held near it. After the glass rod is removed, the electrosco8yqv4(p ym0 kgpe

  A positive object touches a neutral electroscope, and the leaves separv6.)ntp /yehy ate. Then a negative object is brought near the elec .e)vt/ph6nyy troscope, but does not touch it. What happens to the leaves?

  A large negatively charged objec7vrkdkjzk0,q +mcv 4k4jok85-if; x q 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 touk48z4vq-kkkkv 7 jxcj i5f,m; rod +0qch 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 const7 k-rxbhg0rk yzgo;-sz nc0 yu6e. /*iant $k$, which appears in Coulomb's law?

  Two charged objects are separated3( :c6 y*9cvhdflvw1g+hms gy by a distance d. The first charge is larger in magnitude than the (v*hyw:6g y+hld1gc fmv sc3 9second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plac(5 lao/ aku58g knwg;:7j mafted near each other on an insulated table. Which smo;w7n / :kkgujal85( 5fta agtatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain 8j gn :(/ -xvdlq*zwmtq/g xx:force. If the charges on both objects are doubled with no change in sepa8 vlgdmq gq:xzn(/wj :t*x-/ xration, the force between them

  Two charges are separated by a distance d and exert mafd48z 6mkhhmpfb 920 utual attractive forces of F on each otherh29 b6p0z hfk8f4damm . 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. vaoaurf: w h(kf b(efp7 wmrf:db 23i*-w7r8( What happens to the force between to7iaku7f3fb:erf wb -vmr *2rp8(a:fwd h( w(hem 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 are separated by a distance of kp6szt74eag, nff .+ c1.0 m. What happens to the magnitude of the force on the proton if a second electron is place pe,c k ft+sgf6nza7.4d next to the first electron?

  An electron and a proton are separated by a distaq hvioeghbj0 *p:uzs2jm;;vn-l7 59f nce of 1.0 m. What happens to the magnitude of the force on the first em-hi*sv759ov ;p;q jn:ehz bg2 fl0ujlectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dis/ 8s4rs 4+d qrwy0jet8kn.hs xtance of 1.0 m. What happens to the size of the force on the proton8 neq.+8 4sr40/jkdr ss yhwxt if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squa+y2kb8n9s;u ni8 2vvob 4axvbre. 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 m xsk2+9v4v2bn8o 8n b;ibyuv aagnitude 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 cvo;x(bcu0t p9z5 +o g1r)i na,tdea* 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 that acts on the center chug(c,bnox 1)t+aeiod*c 9v0zt;pra5arge due to a third charge of +Q placed at one of the other vertices?

  Which of the following isrhl v)k ,ll0of9(:rkk not a vector?

  At twice the distance from a point chargea7uv. (;rho zp, the strength of the electric field

  Is it possible to have a zero electric field value between a negatitp8jyk 9,0ihzve and positive charge along the line joining thtk jh,89piy0ze two charges?

  Is it possible to have a zero electric fi+ eze//vhiwo7/ v edd0+w2oabeld value between two positive charges along the line joining the two chargesa +2evh 0/wdw7v d+eez//iobo?

  Electric field lines near)w3 y0,8cb xyg hogl3j psitive point charges

  The electric field shoaqzq()7k0acc(sd *9ddy j l/fwn

  Can electric field lcgci75l cz uz.z)dw1;ines intersect in free space?

  A solid block of metal in electro,+h4g c oxe6 4vzijqkec u9c1ph,o qr-6i55ltstatic equilibrium is placed in a uniform electric field. Give a statement concerning the-cg cj6c4u, ,io9 1+54xzo khtev6eh q5qrlip electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diaa:)g no ly)4hjmeters are each given the same4:j ghl)y oa)n charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regi3lm q7h ; 8jx;n jgl*formum*/on where a uniform electric field is directed straight upward. What can be said cornm mmuq/ oll 3*g*7f;x;h8jj ncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriuz6oj1b+c mo i ql 4 qu)2,6iopr8rh;ufm near an electric charge

  A positive point charge is enclosed in a hold+i o9; sg n5npycx25olow metallic sphere that is grounded. As compared to the case;on9nx5sdycp5 o 2+gi without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.c6tuj g+ rn,7o

State Gauss's law.

  The charge carried by one el0 n8sey.. zj4al fgt; aaem:x*ectron 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 many more protons than 8ow0bx/b -10r1 xjeds l.fragelectrons does this piece oab1-0od0x/w rgl r1x.sfe8 bjf plastic have?

  What is the charge on 1 kg of plpq7 4b1bcwc8h; q yb;rotons?

  An atomic nucleus has a chare ),5y1:/bh7nh gwebrm yhs f:ge 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 valuqs7c0t5bafg26;o np6*cn j lees of 2.0 and -4.0 mC, respectively. What is the magnitudeqlg62bc*e ;s7 j6otac n0 fpn5 of the electric force between them?

  A 1.0-C charge is 15 m from a seco*,) a twqs)fze/ w.nfznd charge, and the force between them is 1.0 N. What is the magnitude onzq/af,*wez s ). wtf)f the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. 6c bse )i4jawgbn38b: How far apart are they?

  The force between a z tzi0t) nofh9r kc,5)$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially +b1eg1k t 9d bn (j5ui6bmul 3lvhj.1f2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what dl jb fbj v9ulkhn5(.31t 6gui1b1+e mis the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fi8b4csxg+*v ,o* wyzjk+d-ar rrst charge is r8gzw +ad,y+cx*jkvrs*4b- o 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 which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plab6y8b4 *kil.wi qhg4aced at the origin, i6 bbk4qh8igyw al4*.-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 charge at the origin?

  Three point charges are located at tb e(-pilj90 qkhe 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.l bqk(pe0i j-9 What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is q;3ax .1mttltplaced at the center of a square, and a second point charge of at3t1;t.lxm q -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 corner?

  Q1 = 6.0 nC is at (0.30 ::rf;59n(9dh nz +aqcngboytv s c34w m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC : nb9o(gt3+fw94q: savz dcnc ;5nrh ycharge?

  Q1 = 6.0 nC is at (0.30 mk9a*,x i:vf:(hvj ffm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i jiamvv(*hxf,k:f:9f s the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatedb+a. /s5gjli0 k7h of-kecf. ral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fh e75b g.fc-0 ikfj.slo+ak/dorce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.n7j mp-m;bi6z/1hv)ad8 a ehi0 m. At what point, on a line between the two charges, would it be possible to place a cmim a/z ;ne7ja-v b 8)6ph1ihdharge of -Q such that the 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 = 4.0 m. Wheuh fdu:snjc-c3w x1cs+,y- f8re on the x-axis can a third charge be plac:d8 ,3csuf -x1csj n-wfc uy+hed so the net force on it is zero?

  Charge +2q is placed at the origin and usn 8v68so8rbf0 h2v,z;tw; jj4marq charge -q is placed at x = 2a. Where can a third positive charhn8z 8qr 62,b84u r;;tomsj0wa svjvf ge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0fr2ww 7oij)i3au ) ae+ 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 of a fixed7xshmuevm 9mfak a4hwrru, ( *bs73*8 proton some distance above it bwrhr9us,s(48 mkvfu7hem ma3**7xa . How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point bj2c5 : o l,.amuw6urblsmi; y/y nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostaticmic2omya ;wsuj:lubr 56/ .l, 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 magnitjd8jso(vm+y ,+ zetz-ude of the electric field at a disvj-(,ozjy+esd8z+ tm tance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a di:f,79: pmlo s ct6wjfvstance of 1.50 m from a 50.0-nC c,w9j :7spc6ff tl:mv oharge?

  A 5.0-C charge is 10 m from a smal10 h7inrv)aj nl test charge. What is the magnitude of the electric field at tnivra) h j01n7he location of the test charge?

  A 5.0-C charge is 10 m from a xcrl+ x6oivx9e9va2 ;small test charge. What is the direction of the electric field?a9;r c+o6 x29 ivlvxex

  A 5.0-C charge is 10 m from a small za4 ukpspo;xef34o4/5rieh y96a5p c test charge. What is the magnitude of the force experienced by a 1.03i hef c xr4/p6oeo;z4 ya9p5a4uk5sp nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are 0- xpwxp xl *e1zwcw34separated by a distance of 4.0 m. What is the electric field at a point midway between 4w0wwcx3 e*lxppxz -1the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of aemyywoswf7e1 8j- josz :qwei:(xtr9e0 4 s*( meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at9rt4xwe:*e0y j(o(swe s:8- 1 yie7wfo smjz q the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargeuv+edha,mv5,4hzv k ,/n:t csn t;gv ( is placed at the 50 cm mark. At what point on a line joiniznut4c , , e (+v,vd;vm tkgvnhs/ha5:ng the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed atdxg,kj. ,+c-+xrv hq;6brm,t ebw il: x = 0 and x = 0.20 m. What is thex lecr d+t;,x. iv,,:jh6wrkmbq -g +b magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sis6u bsr*g3.vbde 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squ*3vbsrs u.6 gbare.

  Consider a square which is 1.0 m on a side. Charges are plackmw3 2y4 t40*oboe zcoed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); mwoeby*024 3kot4zc o+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 ofh)y(ay itw6c :ps yk7wc7*zl* 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electrictcci a:p s*w7*z)l6 (yhwy7ky field?

  A particle with a charge of 4.0 mC has a mass* xf).cjpnvw3 of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of m.iu3wxc pex +xx( 9ic-ass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge.w+e3cx(x i -pxx i9cu must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a cha1zfi * hb:0blaoeii07cg.k u+ar rn,-rge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravit h,rb g ac n170lkaie-fo bzir*ui:0+.y. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnias(7 / bpmr5yctude of the electric field 5.0 cm from /(7ry p5asc mbthe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whata/83pk e vfth( is the electric 3apk/th(f ev8 field 6.0 cm from the center of the sphere?