State the law of conservation ofn zjv/c *-t ;1hc2kpwf electric charge.

  Is it possible for two negative char .(cp4/kaw lo: vyqjr.ges to attract each other?

  Is it possible for a m1;/tyhl nyyp0 9o2sbpositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During t j.z 69;pnclrvhe process the glass rod acquires a positive chz;plrjnvc 9.6arge and the silk

  A proton carries a

  The model of the atom showss*s rk1g/sm7i4v wf*v a

  A neutral atom always 9 uu:q(t gvmz5has

  An atom has more eleen;9auermn ok8. .po;ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to thenin13/l rx+d g nuclei are referred to ailr1n d3 +x/ngs

  Materials in which the electrons are bound w7-xv nixf:3q wcm5 6ahf15tivery loosely to the nuclei and can move about freely within t55vc:7f 3qi fw6xhmai1wtn - xhe material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal 8( 0auwvesi6 tbar. The end of the me6wt( avuei 8s0tal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, al.ecwam:b 1z32cl6)z**jusf -pu tos nd sphere B is neutral. They are placed near each other on an in t* *ec6c fj-mzz)2 s:1uallubs3o.wpsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged it1qur* 3n nr76jwy+o1 pehe;h+v0 rjrod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charge k6hnn p ;b0d)lzb8fr870fxv ehkm21pft, 7sld glass rod. The electr78n0pd8lef ,7 rxvl) tpsbn;z 6 hbm20k1hff koscope

  An originally neutral 9s:dge38zcmfq4 mwd,electroscope is grounded briefly while a positively charged glass rod is held near it. After the gla,mq4 dc:smd 8g9 3fezwss rod is removed, the electroscope

  A positive object toucyyl jydecz*91 5z 7:tkt8/g mghes a neutral electroscope, and the leaves separate. Then a negative object is brought near the y 9ljyyzg5kmctt 7gez :1d*/8electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table +5or v nu cxao 00sk9ax6f1/vu-rt;xk. 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 does either ballv9txu 1fux o o 50aar;sn cv+k/-k6rx0 touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb co.mw/tv* , gamxnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fiwtd* uwal,ex ;z6 4 yqid3j-0vrst charge is larger in magnitude than uz y; dwaw0vjq*64t,el xi3- dthe second charge.

  Sphere A carries a net charge anjj7-d+6 npbmm uun 0yn l**:fzh( frr1d sphere B is neutral. They are placed near each other on an inhunfj*m 6mrun f7:0 b(yrd1-l+ *jn pzsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If t1s d4/ v- +wddol g,ei-dfi+qjhe charges on both objects are doubled with no change in sepawddig+- s1q4ij+dfl-/,ev od ration, the force between them

  Two charges are separated by a distance d and exert mutual attractive f +sznp*ex z*k-orces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?p*s-n zxkz+*e

  Two charged objects attract eachx.*.cdlloi6l3gx: j f other with a force F. What happens to the force betweenoc f*d6:.lxi l.3gxlj 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 force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. :)8plpsd9ni o What happens to the magnitude o9)8:ls p ponidf the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separ+g4d, 6r8hurh k9*k 7ihkk zhpated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second el kkhhrk7h+ur98g,ipd k6 *4zhectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happensq76 amqdgy o**mha3 b (pf**rv to the **mr* fy6ma dq qvh* aog(3p7bsize of the force 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 sqtijmp0*4790 s;yw n -x qcmntfuare. 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 magni*j n-stf7ic yp;9n00mwqtx4mtude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed ,e0.its:mkphqph7 ub ,a38v fat the centroid of an equilateral triangle. When a second charge of +Q is placed at one of0,i uh,sh. fkmp8t: 7apq3e bv 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 angr 1,c e ,syk6cb(z2b vector?

  At twice the distance from a point charge, the strengt ;q 5zhi5uurxa+:2rkr h of the electric field

  Is it possible to have a zero electric field value between a negative and posia l e6hdoeyzkd2l;9.+tive charge along th lddlya okez6;+2h .e9e line joining the two charges?

  Is it possible to have a zero electric field value betweht bmq1ui8 j*(s, idg7en two positive charges along the line joining the two chargesu*i (,qdtm8h 7jis1gb?

  Electric field lines nearist(45)g sr)7 ;g30sgy2ch ur lnfqsj psitive point charges

  The electric field showa ld 2b25qkfk.n

  Can electric field lines intersect in fr o6nt8 rv1gc*y sz9qs8ee space?

  A solid block of metal in electrostatic equilibrium is4 5pbn6:e6l gf:wnpbs e8 swv8 placed in a uniform electric field. Give a statement concerning the electric field in the block's interior.pwf:e bsngp6e 4w8 lsv:n 586b

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g buh( +:usvy+diyh+ d+:s( vubuven the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests onc,4 vlefe 2by ;9wq*vg a wooden table in a region where a uniform electric fieldy9*2;4,bwfev gvqc l e is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriumidhzap .i,n64/qsq -i:k/ i zlp+v,pt near an electric charge

  A positive point charge is enclosed in a hollow metam;1lli tox flu,j-uxy,t;: j nzm/ :y(llic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at ajx,/lol,j 1 f tylmmt;iu ; (z:u:nx-y point directly above the hollow sphere has

State three properties of conductorgysdjl:2.lwjpi/ 3p . s in static equilibrium.

State Gauss's law.

  The charge carried by on l ff*n* .ml9g*5omowl n8hf)ze 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 many more protons than eax 0jo3a ze8*blectrons does this piece of plastibjxaez3 8a0*oc have?

  What is the charge on 1 kg of protonriy; n,e iy:*7vv) xvrs?

  An atomic nucleus has a chargeikbg giks3 g* 792e9rw6asb1i 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 m ps15b vfx+y(eC, respectively. What is the magnitude of the electric force betwy+ bx( psefv51een them?

  A 1.0-C charge is 15 m from a second cwk)(k; 85)vi onkucknharge, and the force between them is 1.0 N. What k8knu;c5 n )i(kwokv) is the magnitude of the second charge?

  Two 1.0-C charges have a force bes9t3gewr(9ay kp. l*kdc1/j b tween them of 1.0 N. How far apart are they?

  The force between a bzzc +bha6-tuo w1 *.s,cv+oy$30 \; mC$ 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(kte,qha+q/ u force. If they are moved toe( k+qq,t uah/ a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axi2+v d: y+:pdjgm h:unns. 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 whicnp+gmdnj+: 2:yu vhd :h acts on the charge at the origin?

  Three point charges axr9jr9 f9guw wf -6jv2re placed 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 on the charge aw rr69f99j-wg jxu 2vft the origin?

  Three point charges are located a3,ai)vh6m0/l dtu z ygdo0f+et 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 mdae l6 )u00h /+tm,y d3fizovgagnitude of the force on the 3.00-mC charge?

  A point charge of +Q is *lyq0 2 xhpslm085cqnplaced at the center of a square, and a second point charge of -Q is placed at the upper-p nsl m52y0*qcx8q0 hlleft 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.7e xv4:8+0z mdouc:dlvt: ruz0 nC is at (0, 0). What is the magnitude of the ne t0v7doe:r mul8+4dv::x uzczt 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); tqe(iu;)yd pegq86e4Q3 = 5.0 nC is at (0, 0). What is the direction of the net8e q pye;td()eiu6 4qg force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral tcnw.ok3 s- gw9(d*hdkriangle which measures 30 cm on aon3 (k.d9h*- dcwsgw k side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wh t.)brab9 u,*phj)zqn: dgqk+yf)l5 bich are separated by 3.0 m. At what point, on a line between the two charges, woulg )bf5,j bkq):a)y9 .hpqtr+ buz*dn ld 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 andk sd4j/h5n2hz a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third cha5jhhk n4/s 2dzrge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. , kt8fb)eg0koWhere can a third positive charge +q be placed so that the force on8btko )e0,kgf it is zero?

  A copper penny has a5 2w ufiwbl)gn3r.at . 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 thefs* +vyoc5 vc( force of gravity by the attraction of a fixed proton some distance above it. How far above the vv5osf(y +c *celectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thr.b23dj;4q, e6 ygwkbb jytqo 7eads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them y4t.qg2,bbdk oqbej7; 63 yjwapart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +4j,ntuaev(4r7 0e. What is the magnitude of the electric field at a distance of 1.u,jtr7 4 n(ave0 m from the nucleus?

  What are the magnitude and direction of the electric fiel*r*(cd x(xdmyd at a distance of 1.50 m from a 50.0-nC charge?(x*ycxr d*md(

  A 5.0-C charge is 10 m from a small test charge. What is the magnito))iukue8c5 / ods)ld ude of the electridd)/el ko)ouu)i8cs5c field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What tmx.h2g v2v.e(dw 4q fis the direction of the electric fiedmgtq v. (hfw4x v2e2.ld?

  A 5.0-C charge is 10 m frow/ +e7v anjd3-,xipc mm a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test v/73acd,n j-p+w xi mecharge?

  Two point charges eawlar ml+ot 3 29zhb+k vaz4-z6ch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electrico26rzvk9 4 3 +z zlat+ah-mwlb field 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 a -h6qicx hvq ein74bat h16t7 2:4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mar77e4tq2 xh: hbh qa vci6i6tn1k?

  A 5.0-mC charge is placed at the 0 ap(i(tuz+(z,dc cw)qcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cmd )pc,acwqz(ti(z+ (u mark. At what point 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 = 0 aiq2ey6ohy7uxmicoi- 9 ) -4 dgnd x = 0.20 m. What is the magnituxoy7y4q g)2ui9i6eih m- d-oc de of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50ji rrzhe5b j:0y5x3hjbc /9; c m. The last corner is occupied b z: 5/i 0;ber5jyh 9jcjhb3rxcy a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the2/utfyyi .935cllf a q 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). What is the magnitude of the electric field at qi.u f5ay yltc293 fl/the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is pl)gca;8w j;:yh kf8ym j2 hiq*/lh ldy*aced in a uniform electric field. Wh2w;hldy;m)ly8 fqha8yk *jg *:hc j/iat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ofdrfhf 5jyvmd7 vq;z3 8x0z9 ,f $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in on 5g9ao,f q9lmqky4 9it/y1u an electric field of 6000 N/C pointing downward. What charge must be placed on a4/yi99,fn1 y uq 9 g5oltomkqthe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal,ob ,k7 lsenh3l is placed inside a uniform electric field, and is suspended against the force of gravity. Wh 7,sbeko3lh, nat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2./ l-.1 dhbrnin4 p9evrcl0 v+p0 mC. What is the magnitude of the r/ c.p4hv 9inn+ 0pdl1lerb v-electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cme5sbx j8 2d7uu carries a charge of 3.0 mC. What is the electric fieldx5jus8bu2 e7 d 6.0 cm from the center of the sphere?