State the law of conservation ac-bg :q+wvy*o q45 p+ukey2uule b48of electric charge.

  Is it possible for two negative charges to /boc2 7)aqm s7 wav-ftattract each other?

  Is it possible for a positie(l p(ybcc7 ,lve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk.n 5+vz+:j, af c.uhnxh During the process the glass rod acq+: j+.fznnuh5 va ,hcxuires a positive charge and the silk

  A proton carries a

  The model of the atom shows*6m r7h *vhx9i,e beqh a

  A neutral atom always )701s-ja xr ,mbqgh vphas

  An atom has more elez(t :h)iscwcfr7 l8ih0 o.i2uctrons than protons. The atom is

  Materials in which the electrons are bound verya,*v8 2 dwlyop tightly to the nuclei are referred to o,82dpw *yv alas

  Materials in which the electrons are bound very loosely to the nuclei and qs3 .x5oeff(ak8 p(p-m/ht2k(amdpncan move about fropsaa /n 8-m dex(2qt(3k.pmh fp(kf5 eely within the material are referred to as

  A negatively charged rod is rms s9h*asnc8a/ 2ak9 brought near one end of an uncharged metal bar. The end of the metal bar farthmhas 9rk* 2a an/c9s8sest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ner4c:vjs dv+8 15ok ddcutral. They are placed near each othd:rcj4ddvs8o+1k 5vcer on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cha/dn)s3,ehlne hv(; wkrged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched ca;mwtj-g4ualgdaf(ybl( 17c 5bq 5. with a positively charged glass rod. The electrol. g(j7my qb abl(dc5-1fu cta5;w4agscope

  An originally neutral evf4rjdo)4 4kilectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is re4rkf)dj4oi4 vmoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves separ5;5c ,dbtklou(/).k1ez dz9 j nu rtdhate. Then a9, k. dt5 /(5c eddntzou ;b1ujhzl)kr negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object it nqc,8p /gy 1cxlg9*ns 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 rollx,1qnl9* ptg/gy 8c ncs 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 coae9.rswz2 z 2 ue o0u5expcd((nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg:ld d8 lu7is5be is larger in magnitude than the second char ib:us5 ddl78lge.

  Sphere A carries a net charge and sphej 5pp0rir,o222q8puh m mldw6re B is neutral. They are placed near each other on an02q,dmwh 2 rrp iu2l6mo pjp85 insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on ( xrzz;tsc1( du5gj-g both objects are doubled with no change in separation, the force bes;51(g-z guzt crdx (jtween them

  Two charges are separated by a distance d and exert mutual o+sk e-+lce8 y.+-tjgwe2y l+nl2q,swvk t 3wattractive forces of F on each other. If the charges are separated by a distance of +q- 2o+sskelcw w+ v-+8ngle .et t2yj kyl3w,d/3, what are the new mutual forces?

  Two charged objects attract each ot5v0vuh 8fim a+her with a force F. What happens to the force between them if one chargvh5 0ua8mfi +ve 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)y e61l)3p yatpooam9 separated by a distance of 1.0 m. What happens to the magnitude of th)lyat13eom9a6o )yp pe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by qf c/e2yhh,eyj20 z f/a distance of 1.0 m. What happens to the magnitude of the force on the first electroncy 2e20eqfh f,z/ hjy/ if a second electron is placed next to the proton?

  An electron and a proton are separ 61s4lpds c2urated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 6u2 cl4pd1rssm closer to the proton?

  A point charge of +Q is plac3zwt v:hrf;l dy9fp* /wn i t1.xgx kwgd6)s6,ed 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, identical charges of -Q are placed at the other three corners of the square. What is the magw k d1 grls3f;gvhzx/in,tfty.6:d)wp w 6x9 *nitude 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 equilat ixgu+mjh m:/:x1 os9yeral 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 charge due to a third chargeusiy/ +m xj9g:h: mo1x of +Q placed at one of the other vertices?

  Which of the following is not a vector?by)xwlggv46dvxgq ;m s,z0*xa bt -:+saw )6g

  At twice the distance from a point chaif) jtet+7g:4wl vhv 7rge, the strength of the electric field

  Is it possible to have a zero electric fi7fu8wz nekrpic5 y6 9 o)fr50zeld value between a negative and positive charge along ro0e55pf 6rkyz7u98 )nwcizf the line joining the two charges?

  Is it possible to have a zero electric field value between twouj7kn0/j brto4 a7 dg- positive charges along the l7d -n 7koj0j4ga/ub rtine joining the two charges?

  Electric field lines near psitive poi(cb kk,h. 1qxd hi8k4paz-3te nt charges

  The electric field showm-qivp1,u r9 qn

  Can electric field lines inf kdnu5hjg( j z+zlxg)m;s;(0tersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elect3dh4e)u09 jgtx ch k)uric field. Give 0 h3uch9ue)d4tx kgj)a statement concerning the electric field in the block's interior.

  If a solid metal spher,g k 32be d hioxwd5y /uir*+8dxq5b p35+tlcve and a hollow metal sphere of equal diameters are each given the same charcr5+yvtdg/qbwhd+up e2 il *3x ,55 dk ixo8b3ge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden i5xx/2d 5jhzltable in a region where a uniform electric field is directed straight upward. x d zh5il/2jx5 What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equinw+e6 zpn/x+z librium near an electric charge

  A positive point chakr qo91uxg2zxo8 y6v ,rge is enclosed in a hollow metallic sphere that is grounded. As compare kxvozg68 r, 1qx2o9uyd 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 stxs9 p7klfo 7r 6;s+zzeatic equilibrium.

State Gauss's law.

  The charge carried by one electron is5b (m+l4rl6ev s:bl/ z:t . oflcab/dz $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net ch o1s24wrk ztavd1ijj)3 *oa9karge of +2.00 mC. How many more protons than electrons does this piece of plaswsot kad1rak2oj j)19i*z v34tic have?

  What is the charge on 1 kg of prot3h6yijs ru( 7mfky+ah)wk a*7ons?

  An atomic nucleus has a charge of og2.r/ )he+f/ kmz zuh$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, haveq2x 7p;8 f5tm/rjqjh x charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force be 7p5qj xqr/x fth2;mj8tween them?

  A 1.0-C charge is 15 m from a second charge, and the force b4o7asehe dt930s 8d hdetween them is 1.0 N. What i 70het d8h4sd sdea93os the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far abmx:i:a2m t e whl1i4n0f10ic part are they?

  The force between a r,-ss)6syi q86nut,i jd uul 4$30 \; mC$ 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. l ffbqqf3( k+a-y50pmdcv0(xIf they are moved to a new separation of 8.0 cm, what is tykl cqxq bf v+mp0fd(-a03f5( he electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha5 22koppbxub ;g5t 2dx la9-iirge is at the origin, the second to the right at x = 50 cm, ap boxbi; 525922gx-ulit pkdand 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 cha nq:d )crwl8;arge 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 directi )qc: an;dw8rlon of the electrostatic force which acts on the charge at the origin?

  Three point charges are loc+qmc6z verw9k*: )yzr ated at the 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. What is the magnitude of the force on thq6zz)vye+km:r cr9 *w e 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, anqc ue*j (l hdzyc7n .5+l4ij; e6ke9wzd 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 elkidz.ceq+w * 64ljh yj(5c ;z9ue7ncharge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m,9q(zob09dgftav9/yxhsq -y;n1 i5q 46pzaey 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at ( zndh90tv -/ag 4y9bq xiqyq561( ;syz pea9fo0, 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 nC iux7)) wu8a aqprvk :x5s at (0, 0). Wxqv 58ka)u)apxu7:w r hat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed atb1 7mr86hsebk(h a;zy *rim;n the vertices of an equilateral triangle which measures 30 cm on a side. What is bz;s7(ry1hibnrmm e*6k; 8a hthe magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which n89g(rd my ryog,y83i6 cdws* are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to,g y(oi dg9dn8* syr86 w3cmyr 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 zg/w 5 mh;5qdxm. Where on the x-axis can a third charge be placedhqz/dxm g; w55 so the net force on it is zero?

  Charge +2q is placedgqo 9lw:;n7jt at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be t 7w:n lo;gqj9placed so that the force on it is zero?

  A copper penny has aa9o hvk+ wev*. mass 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 coc1e wot1-m(vdkz,z 92 p b;-/zvcd( lbc)cothe attraction of a fixed proton some distance above it. How far above the electron is thecdob(1c ed)c9-twm/1ozbo ;czv cv- ,kpl(z2 proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threa)m*d v 7h)13zza fnpibds which are 30 cm long. Both are given idendi )za z*n pm)3b7hf1vtical charges, and the electrostatic 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 +407 7l:1gnwatnze. What is the magnitude of the electric field at a distance ofgl7 7wtan :n1z 1.0 m from the nucleus?

  What are the magnitun g;u;e q)ql*nde and direction of the electric field at a distance of 1.50neqn;*;)q l ug m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small tes-o hn8l7a *;nhw9mwej7+y sutt charge. What is the magnitude of the electric field at theh*ownwy t sn87laj; ehum 7-+9 location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction on/;u y q -. iyp9l8rx qo1(xdmz6ytpr6f the ele8ppoqxr6q ( 9r ;z/.ly tyn1u6ymdi-xctric field?

  A 5.0-C charge is 10 m from a small testv2 +4bkybb41t2bi ysm,y z:ql charge. What is the magnitude of the force experienced by a 1.0 nC cha yt2bbi,yzl m+:yks 2v4 4bb1qrge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatcd7v y5:ln 0mxed by a distance of 4.0 m. What is the electric field at a point midway between the two 0: 5xvc nmydl7charges?

  A 5.0-mC charge is placed at th /i,k)f6 .59 :lfwytscaqndese 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 ,/f5s c. ksl9yfwdnatq6 i):eat 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 1lfofv qp9h+v)8/cm gwmi 94uhe 5g p6charge is placed at the 50 cm mark. At what point on a li 8w99gheip5gvu)vm6f fmq + 14lcop/h ne joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 qf: l44tcoe: uand x = 0.20 m. What is the magnitude of tcqeut:f 44ol:he electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 vzml4rhl(* b+ m. The last corner is occupied by a -3.0 mC chal4hlvmz*b + (rrge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed atu,g1kf 0kbc0o the corners of the b1 00 gf,okckusquare 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 center?

  A force of 10 N acts on a charge of 5.0 mo ,;sci /yxl*cgi5l;zC when it is placed in a uniform electric field. What is the magnitude of this eg *yscz cix/l;loi5, ;lectric field?

  A particle with a charge q yzi,v7q).l.i 71cmcrt1 y dmof 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 0.120 g is 5:kbxhncsx 1o t,5/ mjplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspen hobn5x x1/mt:,cj 5ksded?

  A foam ball of mass 0.150 g carries a gsfc;f250pl rwz29ed charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended age g22prfw09scl5zf d; ainst the force of gravity. 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 msmh1st*x( t7 fagnitude of the electric field 5.0 cm from the sphere's surtsfhsm7 *xt(1 face?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wj/-0i udwxn2 hhat is the electric field 6.0 cm from the center of the sph2i- /0 uhwdxjnere?