State the law of con/(2lic .l6vajlcxy m7servation of electric charge.

  Is it possible for two negmn-th9v n(v(p*ug9u .jm9 yjz ative charges to attract each other?

  Is it possible for a positive and arpn 44 du9mdu0 fuhc(( negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During them zwq lavptyfeif*ln:1 d5 d31.9c* k3 process the glass rod acqu :nqm1 pd9 l5y1a3lf*v.fi *kdet3czw ires a positive charge and the silk

  A proton carries a

  The model of the atom shows f9vptr a anc-vvy.+02a

  A neutral atom alwaysv+0 1b9r vw 6wphw7rly has

  An atom has more electdb.:p4js0 cm+zyeq * xrons than protons. The atom is

  Materials in which the electrons are bqo+7 7w3l.mzkoeb4xk /htz x9ound very tightly to the nuclei are referred zb 94hm7 3o/ewo z+ltk.x7xqkto as

  Materials in which the electrons are bound very)ux: tn,3e2w fgrnu f( loosely to the nuclei and can move about freely withi txu:f wu2( fnn3g)e,rn the material are referred to as

  A negatively charged rod is brought ne 9,n7gmluigc+ 6z8e07 siia f jjlo2)ear one end of an uncharged metal bar. The end of the metal bar farthest from the80a ) fo,jgillm+uez6n g9icij 7s2 7e charged rod will be charged

  Sphere A carries a net positive c fvwt:,xbrmy/ v rwh,3h, wsy 8fj.:*mharge, and sphere B is neutral. They are placed n3frjw. ,*mvtfxhyv wmr :/ bw 8h,s,y:ear each other 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 charge an electroscopzlgv*74db q -6w4of3hm ussfm3k:eb;e positively?

  An originally neutral electroscope ppmt ct*vub )dm4 sljv1n.w5d56*ed6is briefly touched with a positively charged glass rod. The electrpn6vtl5tw6j b 1p s) mv5cuddm*e*4 .doscope

  An originally neutral electroscope is grounded briedl45ue q vs7fg.i,mc )fly while a positively charged glass rod is held near it. After the glassqsf l7vdg54cmi eu.), rod is removed, the electroscope

  A positive object touches a neutravlae.(/ xexm lxmb 4y6 2 lelag+l*9b-l electroscope, and the leaves separate. Then a nev*m.g le+xyl xa 4labe/xl62(e- mbl 9gative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is ve0ml5 9m y.(ph:vacwplaced 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 touch the negative object. At no time doel0wv(cm :a.evymhp 59s either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb c .:nx6et xwx 1tnnlj-xz .67ekonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isl2x92ua4. pk 1rcjempr*e5a z larger in magnitude than the second u aer5ce* xa24l1 2.m9j rpkzpcharge.

  Sphere A carries a net charge and sphern (xtr3;-l ucme B is neutral. They are placed near each other on a t -cnurxml;(3n insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ch1 c wxlp8mr0i +mi2g-mu+xo 6farges on both objects are doubled with no chi +mxmomfp1w2ur860+gcl x i- ange in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces s6.p1 a4xdn8ixgrg8 n of F on each other8pxga8 sd4i x1rn6g.n . If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each8jj(:j8la3ulw*0jr m b j kad; other with a force F. What happens to the force between them if one charge is douulm(j :w3 rbj8lj da ak*0jj;8bled, 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 : -zv:pfz((-enxlioy are separated by a distance of 1.0 m. What happens to the magnitude of the force on the y-z: z :- xefilov((pnproton if a second electron is placed next to the first electron?

  An electron and a proton arepk ts g2s,b 0b,py6g/p-+bjsw separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed y2 ppb6g-jptk 0b,b,s sgs+/w next to the proton?

  An electron and a proton are a.qfy yuuj0t5/xt(u f+f(bp ;separated 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 m closer to th.fbufp/f xy+jtaq(y ;5(u0u te proton?

  A point charge of +Q is placed at the center ofoe r1rbw7u g3o69pm9 o4ovyv( a square. When a second point charge of -Q is placed at one of the squarpvombr w6 v19e7y g o3(ouro49e'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 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 centroiduj ff pm0 zqol177//9/t,txxv/r mbpe of an equilateral triangle. When a second charge of +Q i zufpf o j1 /,pletq097xm7m/x//brtvs 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 is not a vec; lhc 199mx3uvbuuwe )tor?

  At twice the distance from a point charge, thej in5z(ydq l1),xpb. x strength of the electric field

  Is it possible to havvl ej6n8u /hz 5px*5tve a zero electric field value between a negative and positive charge along thexhl5/n*tu5e z p8v vj6 line joining the two charges?

  Is it possible to have a zero electric field value between two positive c *j2d9 wgmfb;: /)stomaaoip 0harges along )0wds/timj :9fabo *;o gam2pthe line joining the two charges?

  Electric field lines near psitive point chargeq+pr.xhjj rkgd02yn-s gs5( 5 iv5j2 es

  The electric field show o*. jglzub;y-n

  Can electric field lines intj4q5upug +hn(yi6: dk 03uqclersect in free space?

  A solid block of metal ix02ffq nd qcrh /41b5in electrostatic equilibrium is placed in a uniform electric field. Give a sta 4hq/2 fxn1 d05irqbcftement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equa l1fbsnzuvd:0 v, i4f2l diameters are each given the same charge, the electric field0zv i1 l4fdfns:vb u,2 (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tabip 8z:fcfg7k)r6. a qble in a region where a uniform electric field is directed straight upward. What can be said concern6 k i )8q.fr:7fazgpcbing the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrmqp8nmz -p(rqdwg*m5e7z+ m ;2q -ichic charge

  A positive point charge is enclosed in a holl;yhma;m;.v nidif:q, ow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point diramdfyn;iq, ;;mh.: viectly above the hollow sphere has

State three properties of conductors in static equi l 2i6r; zhwz2jcv,n vyf1yf-+librium.

State Gauss's law.

  The charge carried by bm *t)j :0phhpone 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 o v))y wsv9i2mt2ypr1tf +2.00 mC. How many more protons than electrons does thisvy2yw) tpr)192mtivs piece of plastic have?

  What is the charge on 1 wh91hfet a26b kg of protons?

  An atomic nucleus has a charhln( z gr5:-x(y fpb)ew762y1pc aq if+3 mwugge 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 of 2.0 and -4.0 mC, rszveqq;fcp 8)h q *y*im5 vp0.espectively. What is the magnitude of the el psc*f q0;vpm 5e ih)8zyq.*qvectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwek-+g+nz- uicu en them is 1.0 N. What is the magnitude onuizkg +-+ u-cf the second charge?

  Two 1.0-C charges have a force between them of 1* dz)-uo2dpl lq 3way0.0 N. How far apart are they?

  The force between a le2maa;/7x c7km ju q7$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ap3acc7x*m z3) io d1kfi kzp34yart, experience a 1.0-N force. If they are moved to a new 73*zc y4pf1i3i3odxk aczm k)separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC agiufy91 c-de(y. b332 c hwghare 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 el2wd yg(u y1c3f9 3bihcg e.h-aectrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A4gsj*uj7p3 aup: l-8ip km7yy 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-u i:kp34g7lmjj7as up y*yp8 direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2zav.,h zd92ly(qj 1 b3zmvp-t try7f-.00 mC at x = 1.00 m; Q2 = 3.00 mbjmazvztr39-f h1 v-y , y2ldz qp7(t.C at x = 0; 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 plac55w/tzmcbwi0m*,b dw dq *l(a ed 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 z w0 m dlmq/w,ta(b wdic**5b5charge 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 ml6fg--fa wus+ ); Q3 = 5.0 nC is at (0, 0). What is the magnitude of tu6-l g asf-fw+he 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 io/kih)* 9l9;hjr+oc ero *umd s at (0, 0). What is the direction of the net force ono** oludjh;9)r+ c re9i/hk mo the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thn3;eh nr)lv p 10d5bbfe vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude on0d )53vl1nb pfe bh;rf the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whvf y8*v-px*qzto jwvi(7ln ** ich are separated by 3.0 m. At what point, on a xzo p-* fn*tvv*vyi7 lw8q*(jline between the two charges, 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. wnp- wo/q3ah. ;4 uila0z: bqoWhere on the x-axis can a third charge be placed so the net force onw ihol4n/q;:0ua apo.zq 3w -b it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x cl55hu pet+s 9= 2a. Where can a third pou5se5l+9t c phsitive charge +q be placed so that the force on it is zero?

  A copper penny has a ;fy/+7ph c2rugo g 7iimass 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:xu+oh j xp+n g,iya 2,a:d0 2qgz:rlx against the force of gravity by the attraction of a fixed proton some distance above it. How far above tuyd r ,:q: g,ixala: g npo2xhj+z2+0xhe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by novudq+ j 6lhp8,nconducting threads which areqpudj ,8+h6 lv 30 cm long. Both are given identical 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 n*-y55mi+o6brblm.6brkc, kquab( ha charge of +40e. What is the magnitude of the electric field a*b (bq5 l mam-,k6b+n6.o5hkr cryuibt a distance of 1.0 m from the nucleus?

  What are the magnitude and directiocdlv ivvh,. gi2 88fxc2 v-ad+n of the electric field at a distance of 1.50 m from af,lhvgda.2v82xcvi -cid +8 v 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of0+p bso/6vgnlnf6e6pcb9 *kkvi vx61 the electric field at the locati/ gvvx ke*p bn6k6i1pvo66s lcf0nb+9 on of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whwir +.zh zw;+lat is the direction of the el l+;zwih.wr+ zectric field?

  A 5.0-C charge is 10 m from a small test charge. Wvj9vb.oln ic0 n;j: r0hat is the magnitude of the force experienced by a 1.0 nC charge placed at the lo:v9jcovb nrni;l.j 00 cation of the test charge?

  Two point charges each hal1xdh8 (*uvmex/bonyb) 6g1 sve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electricym1bbu 8g*hn vo/)1 6sx( xeld field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter uky8hj: k . xu0x;tny6lg1bt (stick and a -4.0 mC charge is tn6.0uh (blytg;k1u xkyj8 x:placed at the 50 cm mark. What 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 an57g7nb2mwr* pbc(3fc ra/a swx5fbb +d a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electrbsfw( baw* c xgb3p r7f25+5mb/arcn7ic field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.2aa)07cfk p i5w0 m. What is the magnitude of the electric fiel cfka7pw)a i05d at the point midway between them?

  Three 3.0 mC charges are at the three jsbh(ygxjrrcfn5d; 7m: y) 96 corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elec)g hs6cry(m5b:7 ;rj xyd9jn ftric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placedmkgk095o(iytm6qf wj u/d/ a* at the corners of the square 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).fkjow iay*g kd 9u//5m(tq6 m0 What is the magnitude of the electric field at the square's center?

  A force of 10 N acts 8hlc-;bvtf 0o6rv /bi on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitud o;/-ibvfr6lc8 ht vb0e of this electric field?

  A particle with a charge of 4.0 mCay osspgy/y6:y0 o o2- 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 (+qma c5r6rzuelectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended+a6m(r uz5cr q?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal9abeaj3e y +9xl is placed inside a uniform el+x bey aje9a39ectric 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 carries a charge (s7u8 gmzhwq3:7ptr q of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spheurpmw73gq8thqs7 z:( re's surface?

  A metal sphere of radius 2.0jd): dvq ig0us/4szr2pufi 81 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from thsfguj:p4v d80zq/i2i)rd s1 ue center of the sphere?