State the law of conservation of electric ch+9r chtt+d5e warge.

  Is it possible for twoycq2n a)ul0 :kbv*7*.y krxyf negative charges to attract each other?

  Is it possible for a positive and a negativeppc8s 0ii1vci4tm3 6vhyy,s . charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process t-1 rm90shjw ihhe glass rod acqmri-w hs1h0 9juires a positive charge and the silk

  A proton carries a

  The model of the atowm k u+1e p .eux5yf)sc0c3do:m shows a

  A neutral atom always (0wiizgh).si1 3.td) nt vukdhas

  An atom has more electrons than protons. The10 1 sedhuw,9gs4f waa atom is

  Materials in which the electrons w7e5h,fp- kq oare bound very tightly to the nuclei are referred 7 whq5op k,fe-to as

  Materials in which tpi3p s.st occv wo .qh: (rdm;::wdqd2bj; 4v5he electrons are bound very loosely to the nuclei and can move about wr2qpvt.hqid3s bv o4(:wod :;.c:js d;p5mcfreely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged z4blh2m *zhg*43 l2la htqa7s metal bar. The end of the metal bar fl 2 2z43mhbh ahztsllqa* g47*arthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. 5h-iwkp-l6 v;vuak1h They are placed near each other on an insulated table. - -1hpuwvkav;h5l6 ki Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charmf): u j5:pboeged rod charge an electroscope positively?

  An originally neutral electroscope is briefly tob4)s89k6nz4r.bu xho: ppi yey1/e3.rt mpu zuched with a positively charged glass rod. T3ty8:hryp4 /nuso9p 4kx )zubep 1re. mb6i.zhe electroscope

  An originally neutral electnr )ay7kw9u+m roscope is grounded briefly while a positively charged glass rod is held near it. After the gl+ wynuar7k)9mass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.vt6 l:9( 9cgkc4v 37df yadtnc+qfrs/ Then a negative object is brought near the electroscope, but does not touch it. What happens to t( q/r :7 a+9 l3n9vccfys4vc ddkttf6ghe leaves?

  A large negatively charged object is piq2q 5re j+;qb5 mrg mlnqn+o(;c 7qe)laced 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 the5)rnmb5+qon elqqg;cq q2(m je+ri7; 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 Coulomyr/n 6/msg-b;2dn hkc b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thlix2w3fg3 hedn,/s ;v5q/ bvae first charge is larger in magnitude than the second chaa53fsbxq/, nvw3l ;ehvd/2gi rge.

  Sphere A carries a net charge akl3 fopf(d ) k /r04n3ar9wcysnd sphere B is neutral. They are placed near each other on an insulated table. Whic0 )a n(4 spdr39 kfk3oclfyrw/h statement best describes the electrostatic force between them?

  Two charged objects attract each other withzoih;ty q v.pyr+p(s +1 tdl.h.9sk6(prd x. w a certain force. If the charges on both objects arezoq xrps hvdy1r +.tl+6di ksp.p9.( t ;wy(h. doubled with no change in separation, the force between them

  Two charges are separated ufb f18aq 0k/ vvj/fn,by a distance d and exert mutual attractive forces of F on each ab /jfvf,1v8uknf 0q/ other. 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. Whwteaa*v 10p p;at happens to the force between them if one charge is doubled, the other charge is tri0*ea wtpapv;1pled, 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 1.0 m. What hapawn0cqhc15 *.wh2y u.2rhmyh pens to the magnitude of the force on the proton if a second ec 5wyhwn.h c.ah 20r1 ymuh2*qlectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens* r6-ku0f ,lwy qcho;q to the magnitude of the force on the first electron if a second electron is placed q,y hqlc0or* ;-kuw6fnext to the proton?

  An electron and a proton are separatedsqi) le5v c;z+ by a distance of 1.0 m. What happens to the size of the force on the proton if 5ic);+v qlse zthe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed m/ 6 gsl5/g7pmo3f b,ide3ikuat 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 elect lii,53s 3g6m7f/uepmbgk/ odrostatic 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 equ2xau ouem:elv2 u p7.+i,r tfqb 53m;xilateral triangle. When a second charge of +Qo2l:re q3ie7f2vbauupm x5, xum. t+; 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 charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following f1 :lkb.nfj:h msv:*cd19ltn is not a vector?

  At twice the distance from a pe.c v5e-8tk e7ie eyd *e:upg2oint charge, the strength of the electric field

  Is it possible to have a zero electric field val-r: 7km7jeoxt/wx.xbi-:d x lue between a negative and positive charge along/ tix:ew: jrdm xbx-kl.7-7ox the line joining the two charges?

  Is it possible to have a zerogsdb ,h*6zzm mookj+h: du9(* electric field value between two positive charges along the line joining the two char g*o hm(hb9d+*m 6os:zzd,j ukges?

  Electric field lines near +p .p3 75ccmhzfwe:c epsitive point charges

  The electric field showyh fdspt wtd47.c9ci2 1:ay/on

  Can electric field lines inter8 ) g3a4,yq bqa/yjiw1 mpj5lgsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform3-2id qw )ojql *hxri) electric field. Givqld*ii -xqr2hj))w 3oe a statement concerning the electric field in the block's interior.

  If a solid metal sph4 xxs9zvi -guz)db- f3ere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between tfx-)zds-xv z43 9g biuhe center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform u:yd(:g:fk gm electric field is directed straight upward. What can be said concerning thegk:m ug:(:dfy charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ex *ips: 1 eui *n8awtblz(*9l*,tkn srlectric charge

  A positive point charge is enclosed in a hojg cx7 6/1yqs z*9lxncllow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poi/ycc69xg l*j 7snzxq1nt directly above the hollow sphere has

State three properties of conductors in static equrwne(b; o)flpb 5 jh9ow q nu522)d)jailibrium.

State Gauss's law.

  The charge carried by one2)2qc:- axm*8/onbdm tsfn da 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 maeztsaz; 1ev,32p., +b3 ez; thtalfi sny more protons than electrons does this piece of plas lz;e 13vf,ti 2sae zth.+3t;ba,szpe tic have?

  What is the charge on 1 kg of proto/:h, +pz povw+7biig qns?

  An atomic nucleus has a c4wdlxx8p6 h2.t4w jjt z2i1vcharge 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, havjj9(jtz bi)b* ocf yx-9(y-i +c nkd9oe charge values of 2.0 and -4.0 mC, respectively. What is th-(y+oc kid 9(9ixnjy*of) b jjt9z-bce magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 N2xyoa n7/d4+6 nejzgc . Whad7jye +ng 2acon/x6 4zt is the magnitude of the second charge?

  Two 1.0-C charges have a j 2yih( z* qo3z 8k4fw(wa1sanforce between them of 1.0 N. How far apart are they?

  The force between a j ly qf sl(ekpyy6/4f9dfm85 -$30 \; mC$ 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 they arxucp0hf7 w81 me moved to a new separxp c h7m1u8fw0ation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The beur:2 e4vj)s . jnmq2first 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 actjq2)e .nrvse2 :j m4bus on the charge at the origin?

  Three point charges are placie/avz)lj sin3 qdrp .in7( 6af*fv22q8 ivi2ed on 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 which acts)2vrj6 pa3fivsi7 eiif2nav/qni(ql.z* 28d on the charge at the origin?

  Three point charges are located at tht+or.-a7 sb6upuy :z se 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. su6tr:o.a -zu + 7bysp What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q isae5dmbuk 2-8 0(nxf zw placed at the center of a square, 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 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 p(x0zwam2 dn8 fk- u5eblaced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC n9k9ca5e f6* dhpwu9kis at e9wp u9d9c5fkh n6*ka(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 (0, 0.10 m); Q3 = 5.0 n 8+ hjelmv4s-uC is at (0, 0jle8 -hs4 vm+u). What is 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 equilacht; ohyupy3q9x +2l *teral triangle which measures 30 cm on a side. What is the magnitude of the ele3;*cx tyhlu qy9po h+2ctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated-n i) q-0xh k*upjukj ycqu3:jb7-9 ay by 3.0 m. At what point, on a line between the two ch: -)k 3q-u0xa*9byiu kch7qn jju-yjparges, 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 o9+n8u/fq faqcy5j2k e rigin and a +9.0-C charge is at x = 4.0 m. Where on the x-an9+c 5/eq 82faqkujy fxis 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 gm d7bp rz4hu 6;2w(zzplaced at x = 2a. Where can a third positive charge +q be placed so that the force on it is zeg(b7 pdzm;z 426uzw rhro?

  A copper penny has a mass of 3.0 g. m(vava;8j0c1 e .kwlk 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 attri8 l o+ja.k+nmg 2+tha 4iuxt4action of a fixed proton some distance above it. How far above txta24. go+nmuhi+4 la itj k8+he electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting 2b, kuo h(suaoi4/6t: rmi:kj threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces th 4 i:o(b :uo6hkrm,2/ taijsukem 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 the9fq,6,;+ kwdk ns.f idkgrij7 magnitude of the electric field at a distance , sfk7fg, n;rwi9+ dqki dk.6jof 1.0 m from the nucleus?

  What are the magnitude and dirv*d 6oze(oo : ogci7;i5skyw n).y*cy ection of the electric field at a distance of 1.50 m from a 50.0-nC charge?z)s .y y7*o5do*6ecivynikcow ; ( :og

  A 5.0-C charge is 10 m from a small test charge. What iscx( hk-tqa+(e the magnitude of the electric field at the location of the test charge -(tqe+ xkca(h?

  A 5.0-C charge is 10 m from a small test charge. What is the dire c)2y/)6r4(knaacxorhx+lp v ction of the electric fieldarnrya p(4hxlx +)v6o/ kc2)c?

  A 5.0-C charge is 10 m from a x2 f(-94k zrjoif om9fsmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge? k2m9xf(zi-fo 4 foj9r

  Two point charges each have a value of 3.0 C and are separated by 0e;k1ykv lf;xhvb2 * qa distance of 4.0 m. What is the electric field a 0v qk2;xhvk;e*b1lfyt a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a y +5b0x+u .vh zx h3ix0hiwew)bn9xne6uw j-.-4.0 mC charge is placed at the 50 cm 6n+yv nx5e39bhw-0xbuxh.z +h.0ji) u wxeiw mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mar y7ndx+agqckm 32zd .k9t/drxe.b *4tk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pota2dcx /dek49.x bqd7g 3n*.kzy+rmtint 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 = 0409rw 6ojfb cve1i*a2rymp v+ and x = 0.20 m. Whb0rjoyw1i*vr+c fa p 9e62m4vat is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square v(b b +viipz0;v-8p68te dgwn of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squareb( vp 6;0tibiv wz88nepvd-g+ .

  Consider a square which is 1.0 m on a side. Chg;nldf-4 r ud f6dg,.harges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at,-lu.gn;drdf6 gh4f d (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 6 *ou3g 38d nnvxwc+tzna hh3elb2)+u placed in a uniform electric f+lhx3n 3on 8hugd u a+2*etwb)v c3nz6ield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a av 0gl, hvjdd;ix;-(fp *e1sjmass 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 oepue ;2z/h:y iakrshua g-*73f 6000 N/C pointing downward. What charge must be placed on the ball for it kuagp u3hzaie 2/r-e h:*y7;sto be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball isnbmef+g5 d-k9fey.8c placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude ankg5cbmey .df-f89+n e d direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the ma.69 j yrp8txkl(u5qwpj 6by/qgnitude of the electric fiqt6ply 9qwr.y/xk65(j 8j upb eld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chaoxsw r5k:m8q,n-de;g rge of 3.0 mC. What is the electric field 6.0 cm from the center of the nws -:e5rko8gdmx;,qsphere?