State the law of conser/d3 3 zvoilud:qt *1kpvation of electric charge.

  Is it possible for two negative charges to attract eah+3h jvrz*y 7ich other?

  Is it possible for a positive and a negati 7xqzdl31)evh0 jb3wu ve charge to attract each other?

  A glass rod is rubbed with a piece of silk. kq;65tr ( * ouaevmfw- During the process the glass rod acquires a positive c-qkfu6*;woa( r v5mte harge and the silk

  A proton carries a

  The model of the atom sho2./e wt2vuyt puy66ti im; (pows a

  A neutral atom always hasw, wfchu7uz79

  An atom has more electrons than protons. j v*3m6 a6;scpvv2sys The atom is

  Materials in which the electrons are bound very tightly p q:cbhpz+v r+ w7lp /px7v9r)to the nuclei are referred to as)7cpvbrhpx+:l p zqr9 7v+/ wp

  Materials in which the electrons are bound very loosely to 5bdk g+se5e ;cp55+sn ru4k 75vmyxalthe nuclei and can move y vkprdg+ 7ecanmbu x k5s55e4l5 5;s+about freely within the material are referred to as

  A negatively charged rod is bz4 2uld2q5 suqe,edl8 rought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be2d qq,8 ullus54e zd2e charged

  Sphere A carries a net posiomy t5re5tbo: b l8o.nbz6o/ ,tive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B bz/nl5t o, oro8b.:m6beo5ytis briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cha3)xea4v dw 2xfnm80tr rge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiv9m7r2ql)yfdy (u8gq xely charged glass rod. The electmd x2rq7g9(8lqf uyy )roscope

  An originally neutral electrosc2 trhb:o3sn4fju qw17x-e;c4 pf, acgope is grounded briefly while a positively charged glass rod is held near it. After tqo4 3-w4uxhc;,ea1c:fptjbn g2 fs 7rhe glass rod is removed, the electroscope

  A positive object touchx q )wqc*xrdfu2o59 i)es a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but doesi)2r9c5dqfx wqox)* u not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A nel xh(v) g:xoh-:3w4s qnc6xkp,fm- dj g9lc6 zutral 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 onz -gx xdqvn:(69 - 4hfom36jpw sg,:ccl xlhk) each ball?

  Charge is

  What are the units of the ; yt8:y2n3ee, vrjb/egup.sw Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first*ucouj cfcapss+wta 5,( -2w( charge is larger in magnipst+ccaa2(u(ws5 uof*c w-,jtude than the second charge.

  Sphere A carries a net charge and sphere B is 9 ,2vemi*vj( ,qprxr bneutral. They are placed near each other on an insulated table. Which statement r, vbvq29xm i*j(rp,e best describes the electrostatic force between them?

  Two charged objects attract each other zpvr.i xwv2 k86qt6vq95 a +erwith a certain force. If the charges on both objectq2i +rq a6v 5tve6w .8rpzxk9vs are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractiveki)5djj5 lw1 n forces of F on each other. If the charges are separated by a distance of d/3, what are the new mui51 ndk5 )jjwltual forces?

  Two charged objects attract each other with a ffw. c;w48ian y ).b; xsixh)/ 9zazklg0rtdx6 orce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation din;r d6aw )xa.zi4y.giktf9w8);/lbh xc 0z sxstance 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 distanfwyh:oi iu si d-4)t90ce of 1.0 m. What happens to the magnitude of the force on the proton if4i d0if9 ti:su)hwo -y a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance8ocx; w sq :z6j7,wshg of 1.0 m. What happens to the magnitude of thso8z6swqc,;j :7 gh wxe 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 hm/m 0//kw*.nd zvn mxmappens to the size of the forcn0.vm nk m xmmdz//*/we 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 square. When a second poa.ndzi:v 2dv/3 ejw zc/6b1 u7ri+mhfint charge of -Q is placed at one of the square's corners, it is observed that an ew+vm2r1d 3.jii6zach:n d /7 zuevfb /lectrostatic 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 pl362 bxco mkl3qaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's3qk 6o 32bcxlm vertices, 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 followin ks j(u3( -zth;wge-rcg is not a vector?

  At twice the distance from a point charge, the strength 9shc))g86 knuunmia8of the electric field

  Is it possible to have a zero electric cso 6m qy7k-f6o4/hqbfield value between a negative and positive charqcyfh7bos /mkq -66o 4ge along the line joining the two charges?

  Is it possible to have a)gnis):yq f)m zero electric field value between two positive charges along the line joiqfi:))y) g msnning the two charges?

  Electric field lines near psitive pointawm15zye3n /h5)smj yv( +rev)ec3 lcjk90y x charges

  The electric field shown 4lr8exa(rej )

  Can electric field lines intersect in jnggc+ l;+mw, free space?

  A solid block of metal in electrostatic equilibrium is placed i sb0ta 5m2ezccokgt+ c3d3 qtly9(j+:n a uniform electric field. Give a statement concerni d:k+ccby ejtgl02 (+5 o3tq mat3czs9ng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame.l/nswaktz prw j /-(hz(pk 8*ters are each given the same charge, the electric fieldhz8rpnkz/kt w* j( s/(wapl .- (E) midway between the center and the surface is

  A cubic block of aluminum rests on7/ o qytlq,wp 7jgt7e p1ld9:y a wooden table in a region where a uniform electric field is directed straight upward. What can be typ/e p1q9 7 y:t lgo7q7lj,dwsaid concerning the charge on the block's top surface?

  If a conductor is in electrostatic cchz6uigp:gx)f nvm k,n 1.r/.h,u 4bequilibrium near an electric charge

  A positive point chargtc3hs/ 5*,hx1i mpauae is enclosed in a hollow metallic sphere that is grounded.p tsiah1mua3h,xc/5* As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilp5* 4l1j3m1j ixhupcn.p*csf ibrium.

State Gauss's law.

  The charge carried by one elec.39j h q1e*f4sfgxn *psat o(btron 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 /1 4fj,ysp lhqnet charge of +2.00 mC. How many more protons than electrons does th1lyj ,sf/qhp4is piece of plastic have?

  What is the charge on 1 kg of protonj-qalo t2y- ,r+vd4 dcs?

  An atomic nucleus has a chargq+5i rb3fiy 1 8y7z1w +ibdsnde 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 of5 + g51y vee)cmeff/fv 2.0 and -4.0 mC, respectively. What is the magnitude of th5e vfv 1e)gff c5+e/yme electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force be9d*e )wjz/ wxztween them is 1.0 N. What is the magnitude of the *w9z /jx) wezdsecond charge?

  Two 1.0-C charges have a force betweeutrz nq;x- 1c4n them of 1.0 N. How far apart are they?

  The force between a (+h yw4h(cl:pe eay+u+ 5osk-awwq 2l $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar1t 22l tppeq1gt, experience a 1.0-N force. If they are moved 22te1pgtl1 qpto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mChrd5 -xd3v0a ttto9g9 are 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 direction of the electrostatic force which acts on the charge at the origin dh3t5ttdarog9 -90x v?

  Three point charges are placed m x+/em*s1pbhi; og 1fon 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, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force w;b1mf+g1/ m psox*heihich acts on the charge at the origin?

  Three point charges a/+ ;5 5ob 4cwgd1at7yjbjxbtlre located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0t45b1 jj 7ao+ w;bc5xldtb/ yg; 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 squad/dkt;;pkx:0l1uq ,wf k a6sd re, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N actspxdakl w0f;/,6u;:qdd 1sk tk 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 k aha .0rfr)j-m); Q3 = 5.0 nC is at (0, 0). . ajk0-)hraf r 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 (0, 0.10 m);fz-zdvlq3-y2 y7 :uh v Q3 = 5.0 nC is at (0, 0). What is the direction of the neh zvfd2ylq-v:yz3u 7-t force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices k ,ln o6g/hpgwxc+xi-.;ny* qof an equilateral trianglih*nnw x ;g- ogp+cxqy,l6./k e 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 +4Q, which are sepakg5mw9 +5c x2wiu w(fnrated by 3.0 m. At what point, on a line between the two cha9 u+n5wi wcfwm 5xk(g2rges, 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 the origin and a +9.0-C charge is at x = 4.0 m. Wi6-hr ylw)b 9wry7vg-here on the x-axis can a third charge be placed so the net force on it i6vwyy l-h7 w girb)r9-s zero?

  Charge +2q is placed at the origin and l7mfn 9(lray0 charge -q is placed at x = 2a. Where can a tn 0y79ml(rl fahird positive charge +q be placed so that the force on it is zero?

  A copper penny has a n8),+xtou prlmass 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 against the force of gravity by the attraction o5r pvmq n 43z75p/ .1ah;f.kitgd xzmsf a fixed proton some distance above it. How far above the elh ;p v5izfzxp. qr3 d /k415nsam.gtm7ectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by h(1dn8(c om nz4hpb6p -5ohui nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwo8pd6ub ( nc1h4- pimzo hn(h5een 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 of thl c84lxyl4d b/e electric field at a dist d 48l/4xlylcbance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fupp v5eytl*)ip49 ( peield at a distance of 1.50 m from a 50.y9)* p (5 4uivleptppe0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is tvl vfppjjk:155 61oi3b0pct b he magnitude of the electric field at the location of the test6 1bjpvj5 lcbofkt1: pi5p0v 3 charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direccpti7ou4/ ufr(3+udl tion of the electri47lo+ upfu( 3cutr/dic field?

  A 5.0-C charge is 10 m from a small test charge. d( m30bk em)gk What is the magnitude of the force experienced by a 1.0 nCegkdm3m0kb( ) charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by ax/245i qoegyp6ga.rw distance of 4.0 m. What is the electric ax4wpi6 ry. /2oq5g gefield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and ay4d idljc-m:d 49fe(a -4.0 mC charge is placed at the 50 cm mark. Whaad9 jcdd: 4f(myel -i4t is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anca4vivuv z+gpm;pjo 5ij6 ,(-d a -4.0 mC charge is placedv6uia - mjjz, (goi+pc pvv5;4 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 avselvw dg18-,0m l5pavz5 )zwnd -7.0 mC are placed at x = 0 and x = 0.20 m. What is thes pvm)v 8 wveg0lzlaw-5d5 z,1 magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cz14 ; ejg qn7h,kau5cborners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fielz, k;u 4qe5ja b7g1nhcd at the center of the square.

  Consider a square which it05 r 4tlh+is:z,zgy+ipa1l z(3clnrgq2pi - s 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC athrig1pzz 0gtlzl:i,s3(y ++ct al2- r54qin p (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 5.86jfy li6h0/x g dl,jhy ,beof3 w.22tdtl2oz0 mC when it is placed in a uniform electric field. What is the magnitude of this eled/d2,j 3wgz 6il,e2lh j lfft hy.tb860oxy2o ctric field?

  A particle with a charge of 4.0 ctasxo,8 .yf8 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 elecz7mrshb4ljudf 4-)* sw-t ;cg tric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tjfwct*bh7);44s-ugr d m lz-so be suspended?

  A foam ball of mass 0.150 g carrigu :gaw5xun7, es a charge of -2.00 nC. The ball is placed in:57ggu nuwxa, side a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm car *eb:aj4 iy bsi57yu+y*jg(tnkf 1,series a charge of +2.0 mC. What is the magnitude of the electric fielb:ys*t,ku *i+y47g 1n y jibea5(jsfed 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge j omb41 artq;c 6ev:jronp 1p.8uyz0/of 3.0 mC. What is the electric field 6.0 cm from the ce ec:jor1 u1a4ppo v/z n6m.rtq8by;0jnter of the sphere?