State the law of conservationi/rkpm gr( itw ;fp2eu xd02n(w4x: 4qq ,9wiy of electric charge.

  Is it possible for two ne)sz bj kflr90c38ek8pgative charges to attract each other?

  Is it possible for a positive andyz-3t)b8cs8q r po*ny97dt-xhq o 9jqis7) zi a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proc t ak2j2l5s5qqess the glass rod acquires a positive char2a t l2jqks55qge and the silk

  A proton carries a

  The model of the atom shows c5)lf7m xzdr s g/,.jow5ev-t a

  A neutral atom alwaymnbp j4duu:ktr:8xzzd *(t q6png7.1 hx fo(2 s has

  An atom has more electrons thanicl0wfn )vtc : ojfg m-xlp15x7r +r7/ protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refeya7zx3kz+)chxk70 kc rred +xzhkc k)zac k73x70yto as

  Materials in which the electrons are bound very loosely to the nuclei an5f e-jkyw 9.w+;oswiud can move about freely within the material are referr9j.w- uk+iy;wsoewf5ed to as

  A negatively charged rod is brought near one end of an uncharged metado8ax/kp6 fv)l bar. The end of the metal bar farthest from the charged rkfo)6a8 v/pxdod will be charged

  Sphere A carries a net post u ez+39jhc/litive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whz 3tl+ujh9e /cich statement is correct?

  How can a negatively charged rod mm : :.nafzx :k6s0ufpcharge an electroscope positively?

  An originally neutral electroscope is brie--d5f 0lh;hi1hkiwtn fly touched with a positively charged glass rod. The electroscope 01h ti-nh-kf5l ;hdwi

  An originally neutral electrosca7-iv o(a0mhkbg+c 9w 2njg+dope is grounded briefly while a positively charged glass rg ++h kajo7agi wm02(cvbd9-nod is held near it. After the glass rod is removed, the electroscope

  A positive object tou. 7txq, .krsbqlxx(q urj-1 ,rches a neutral electroscope, and the leaves separate. Then a negative object,xx q-1r.k,qlb7 sj xr q(u.rt is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A n d 16uqa5b rdho93+hp,s nbd2keutral metqbd n +s9dd3ao5b61h2puhk , rallic 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 ball?

  Charge is

  What are the units of the Coulomb cv* d by/x(euc8g1l a)i;a8btmonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l,wxr4l 4/8dm(; 8avj,loyy m lk;mlxgarger in magnitude thany8 al(lgmrj4 o,w8 m,; /v;lylx d4mxk the second charge.

  Sphere A carries a net charge and lk c++c +.,zou(x lc5hhehfi1+.kayz sphere B is neutral. They are placed near each other on an insulate++5ce+.zhcko(,y1 h kllc+xhu zafi.d table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wit . /br(cucadf p:r;-2phxagf lqq8;s6 h a certain force. If the charges on both objects are doubled with no chana6;;fcqb d28xpugsp. c-fh r: / aqr(lge in separation, the force between them

  Two charges are separated by a di p.ph93u mog:9alu*qbosab0 fvz6 rh6 vc1f,( stance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3(mp6cofuh ,bvb3ov.afusa90 9gqh6* z :pr1 l, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the f+sfsz6h +m/u morce 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 value? The /6z hsmfus++mforce is now equal to

  An electron and a proton are separated by a distance of 1.0 m.ufv, zwgzy*oa)w)h -4 What happens to the magnitude of the force on the proton if a second electrowhgw au*-o, vy4)z) fzn is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What s3d8gl-gbi t 2happens to the magnitude of the force on the first electron if a second electron is placed next to the s-2g3dgi tlb 8proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens tzcf5wdaj( htv6 u70;6-3 xu lif hdd7so the size of the force on the proton if the electron is m uhizw5cv 6d-da7l6s0h;df37uxtf(j oved 0.50 m closer to the proton?

  A point charge of +Q is plx h2: ;/pv 6d8m 8wfa(gmvcyutaced at 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 center. Now, ident vc82;:hpt/ 6u d(a8y fxgwvmmical 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 cen9ckan e cg9q 1.az39b2cxs*rftroid 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 o* zqsba2c3c99.1xkec 9ra fg nf 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 7ac*tmii s ut)8cypl)*22ave bzv7 u;is not a vector?

  At twice the distance from a point charge, the strength of the electrisezc9/wm-cuw2 4s q (e;nf oj:c field

  Is it possible to have a zero electric field value between a negative and pose, 1chne9.+a qadytb3 n .ddg.itive charge a+d.9e dbngt3a,e y.d1ha.nq c long the line joining the two charges?

  Is it possible to have a zero electric fgomrft 78 tb s;cmphmei 5:3,eb3 7(nmield value between two positive charges along thgn3p5(ir me8tc; m: , fbt7embm7ohs3e line joining the two charges?

  Electric field lines ny ;k q91t/vcewear psitive point charges

  The electric field showncfgz9x/ /(fsr

  Can electric field lines intersect in frel7 oyah:y 5kz*e space?

  A solid block of metal in electrostatic equilibrium is placed in a unifo06j5iv -1lqw;elr3 eghf po 5vrm electric field. Give a stateoi;56-vwl3vj pgfr5 q l 0e1ehment concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arn;b r e/bcoc nh(8k//rpp55bnhkhi,j+ a..u ke each given the same charge, the electric bnu (jkc/, rhopbhnknre. /5pc.;bhkia/85 +field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden t 8d5fimnegtz+ bf)8 ,o )zslg3able in a region where a uniform electric field is directed straight upward. What can be said concerning the cha ,+8dmz ngg8t)sl 5ifzfb3 )oerge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an eloxs:yfwn e8+a6 5bg*7y 8mxlp ectric charge

  A positive point charge is enclos olc37)6 vl3p5aj*)tfgithrb ed in a hollow metallic sphere that is grounded. As compared to th c3bt5)7r)6jlav fl*goitp 3he case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorsjfg :i:;m yo5f in static equilibrium.

State Gauss's law.

  The charge carried by one electron isyw br9f7iv /wqney8 6-e4oc d9 $e = -1.6 \times 10^{-19} \; C$. 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 ei. c m /shaw(+tjv(f yz0hq.x6lectrons does thiqh6iyj+/v xwczat m.(h0s(.fs piece of plastic have?

  What is the charge on 1 kg of pro7lj l1rz 7t3g+n+kzzf tons?

  An atomic nucleus has a chargsnz toz*ot+ m8h/:kk -e 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 vaqzq8wl1 qbj4 kjm*nm(q ne+q56o- 0 tvlues of 2.0 and -4.0 mC, respectively. wjvolz14e-t8q5jq0nnm*( mk +q6 qb qWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bet1dt7 kltj3h-vdst(*h ween them is 1.0 N. What is the magnitude ofjsk-7*13l t tdhvtd(h the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arzw/eapoeq3f 1t1d8z,e they?

  The force between a 8w,9w*3yzrh qzmb:je $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper m6 3- s+np/bejn6iucnience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweennne/ mns cjb6i63pu+- them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The f(rr(fbbie;79.xyz /gp/kve jirst 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 aci9j vz7bg;b rfp/./y (e(krxets on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +24vnw9 d0i4now k94ne9q wly+e.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC aw9 4vdin9nq k4ln+o0w 9e4yw et 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 followinry o9n701 os v,/uv iwg(lkbm-g 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 isy k-ro in v/b(,9usg1vw70oml the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center p(emz4a61 dlw 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 placed at the lower-left cornera4 (w6elm pd1z?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5. us3pgbn8q 3o/0 nC is at (0, 0). What is the maugqb8o/ 3pn 3sgnitude 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)lk22 r5lqz5 up; Q3 = 5.0 nC is at (0, 0). What is t5k2plu rzl2 q5he direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ve 8 rqpqq.o-61s ruru9uhjiy* n;c3*vdrtices of an equilateral triangle which measures 30 cm oni q 3oy r;s n16.hvrrqud*8cquj*9-up a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charge 9wai+vp ge3 4rvrx23fs of +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 the electrostatic fo p2vr3vgr+9 fe43 aiwxrce acting on it would be zero?

  A +3.0-C charge is at the origin and a k;22uk ojz b1v*n/nfc+9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on*o bk;j kvcz12nn/u2f it is zero?

  Charge +2q is placed at the origin e : re1yie1ve3bip5ic((u4 iv56f riuand charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force eirr 3e(6cp(y:iv1e4i5uvb fui15ei on it is zero?

  A copper penny has a mass of 3.0 g. fn lvr.w):h, y/ arqt.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 grak8h7b yj(.n4p(e brgs - )kk 0tipfg p9yew8r*vity by the attraction of a fixed proton some distance above it. 7bi(gpenf y k(ry0ppw tkbj 4gs *hk).9r8e-8 How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tn *0;ui op p-h0wee5oeb0 f3tnhreads which are 30 cm long. Both are given identical charges, and the electrostai eh3 nn00ou; e 0pe5tpwbf-*otic 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 magni1czeu )q t8u5atude of the electric field at a distance of 1.0 m from the nu t8zu1 )5uqcaecleus?

  What are the magnitude and direction of the electric field at a distc3ixslc2 lj/ s;jw+c3 ance of 1.50 m from;jl3jc2 ws+c i3lcsx/ a 50.0-nC charge?

  A 5.0-C charge is 10 m from a sma u8 hxew* 4ss.gt5qo*y;s kgz(ll test charge. What is the magnitude of the electric field at the location of the (qsy ;t5 guhskow**4.xsgez 8 test charge?

  A 5.0-C charge is 10 m from a sggv6f*uz w0 n uj6;)wcw (lx0lmall test charge. What is the direction of the electricg u)j0 6vw l(60cwlg;w*uznfx field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the foc6z*u 5qvln1; jhd x6orce experienced by a 1.0 nj v6l6d*1 z5ohuxc;qnC charge placed at the location of the test charge?

  Two point charges each have a valu* )d(u1izmbco: w lxobx7( c6vvea 1s,e of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point *aui7(c6,(xbos:o) ec1lx bz1wdmvv midway between the two charges?

  A 5.0-mC charge is placednbeub(7 f9z2stdn4 j lr5faj9x .87ih at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field ate( rit5j7 4.7 blhxb f2s8fznnjad9u9 the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 himz72tp sm 1v 6;1pqp m41suomC charge is placed at the 50 cm mark. At what point on a line joining the two charges is thht21sv mz7m upiq s1pp ;64om1e electric field zero?

  Two point charges of +3.0 mC and -71x/ jq2av v9yt.0 mC are placed at x = 0 and x = 0.20 m. What is the magnay 12v/ 9qtjxvitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of6pi ive,k5pzetp 7f ap/u8h.0 a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center vihku 68te/ 70p,fe5. aizppp of the square.

  Consider a square which is 1.0 m on a side. Cd7xp1zy ta5x-. pp g5zharges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1)1 ytxzpd5-7a. gxzpp5 ; +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 chargb-p 6;h/;kcyug0smw h e of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electrib/0; wu6kp h; -ychmgsc field?

  A particle with a charnw;ut/.1zvqybk n 6*dge of 4.0 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 0.12o1 npax t i7w6,ct..br0 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for i7 rwo6na 1 cibxpt,..tt to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thef z;mg98q7 4zpi 2mti6mjb: qm5a am7rla5e ;p ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of thel:zq77im izgrm p e9mqa fp2m; ta5ba45jm8;6 electric field?

  A metal sphere of raot gy tt;7* ;-5gvhysudius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sugysv* 5o;; -7th tytgurface?

  A metal sphere of radius 2.0 xrg ,0k5ma /hgcm carries a charge of 3.0 mC. What is the electrica/gkhr5,g mx0 field 6.0 cm from the center of the sphere?