State the law of conservation of elecg z f/i a69l+r*9gyn aov:k;xwtric charge.

  Is it possible for two negative xpqg 2qeyt )9fditv u8)m248b charges to attract each other?

  Is it possible for a positive and a0m6c /ex em+8*dgmjr2ans:aw negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the lr9iir3e p/6x process the glass rod acquires a positivelexrii6 3/p9 r charge and the silk

  A proton carries a

  The model of the ato,b/xwnhp : yo;m shows a

  A neutral atom always x y2y9; zr*vyyhas

  An atom has more electrons than proton72ao*s t/djeds. The atom is

  Materials in which the electrons are bound very tightly to the nuclei aro gluex,,* blx qc83c8e referrexll,xqccgo8u8be, 3 *d to as

  Materials in which the electrons are bound bh f)rjclnn+) t4g2;hvery loosely to the nuclei and can move about freely within the material are referrn ngrbh;4c j hfl+2t))ed to as

  A negatively charged rod is brou-9 p xl(srmm-dght near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chadmsm-( r- 9lpxrged

  Sphere A carries a net positive charge, and sphere B is neutral. rizf an3sc*)la) m.l 6 They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundesn*. c 6)iafmazr3ll)d. Which statement is correct?

  How can a negatively charged rod charge an el*0p lpv2mzu,g r * .h, etc3fj80bwkqjectroscope positively?

  An originally neutral electroscope is briefly touched with a pou5ct:a9 6fx fjsitively charged glass ro9c a :u56fjtxfd. The electroscope

  An originally neutral electroscope is groundbk s h bpeu:q0d,au -86zmy++ded briefly while a positively charged glass rod is held near it. After the- duemh:0dp +uq6z ,+akbb8 sy glass rod is removed, the electroscope

  A positive object touches a neutral0f wc3oopmu-vs, 4 6ry electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens 4,0m r puofcw-v36yso to the leaves?

  A large negatively charg5jja8( ezpn ,ked object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral k8aj(,j5e npz 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 constant ynaaj u5t hkg- 0l75xsl+ae8 ,$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largeywxf*9yhnh z;:4 e2:fpzhx)qr in magnitude*qz 92 w;y:enfhfx 4y:x hzp)h than the second charge.

  Sphere A carries a net charge and spherevlud.n s:ve5) amu,. w B is neutral. They are placed near each other on an insulated table. Which statement best describes the euldw a),:v emvns u5..lectrostatic force between them?

  Two charged objects attract each other with a certain force. If the charg dpug68)5bs 6hy cpx.aes on both objects arp)u g . ypb6xs8d6cah5e doubled with no change in separation, the force between them

  Two charges are separated by a distance dm+ic, bgb/m *k and exert mutual attractive forces of F on each other. If the c/k*gmibb +, mcharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forceitdmf7 xzpr.5* wl 73n5vfh*t F. What happens to the force 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 force is nowpt5 37r* iv*dt.hflfx75nwzm equal to

  An electron and a proton are separated by a distance a 0gd,ci +f3a1j.ttugkno k 9/of 1.0 m. What happens to the magnitude of the force ok/ 0uk+njatg.c,31g doai9 ftn the proton if a second electron is placed next to the first electron?

  An electron and a proton are qy-crn, yd9.lseparated by a distance of 1.0 m. What happens to the magnitude of the forclyy.r, d- qn9ce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dxmp /f ,a9*5hdyp5r mmistance 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 the protp9a,mfh /dp 5r*m m5yxon?

  A point charge of +Q is placed at the center of a square. When a second po6/vc 852zi blqwt bry3int charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 b5cqtz8rl /wvi6 2 y3bN 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 pl83o gl f/8piupze ysunn 68);waced at the centroid 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 of the force that acts on the center charge due to a third charge of +;n888)o i slug/uy63efp wnp zQ placed at one of the other vertices?

  Which of the followin zt;y(t: ieby:g is not a vector?

  At twice the distance from a point charge, the strengt3j9d)ohyi 6 yfh of the electric field

  Is it possible to have a zero electric field value between a neg b )/vkm*og nl9m-xh;wb 54vzbative and positive charge along the line joib5xg b h)-4w lb nzv/km*9vom;ning the two charges?

  Is it possible to have a zero electt-ko *if+,kyjric field value between two positive charges along the liyk +-jf*,o tkine joining the two charges?

  Electric field lines near psitivz 2 ojexepi7 nq it/y)vb8( g*t:.nsu;e point charges

  The electric field shown 5s*m/d5du gxi j,y+ac

  Can electric field lines intersect in free spc74q j r0c9ducxia80sr 8jy1 goa a j.9i/em/qace?

  A solid block of metal in ele1uep(ki3j8z7o s 0qybctrostatic equilibrium is placed in a uniform electric field. Give a stateme0u ysk7b(3z1 i q8ojpent concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of tia+ca71dx s zgh6 r-0equal diameters are each given th61 0g+7hs-azt rad icxe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum restspvy6a)(kz4ba6:;ehpjht * n x on a wooden table in a region where a uniform electric field is directed straight upward. ta)x h *yepa:(6 p6z vj4;hbnk What can be said concerning the charge on the block's top surface?

  If a conductor is in electph;.,s k 0ttea(+rscerostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hjw jm)ur0*3z0uw wrg1 uxt;.aollow metallic sphere that is grounded. u*;.rruzjtg 1ma3)w0uw x wj0As compared 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 )qjc pz-zga4* static equilibrium.

State Gauss's law.

  The charge carried by one elecm,w172avi qcv tron 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 cham t9m 8lb yc.xed)o(u4rge of +2.00 mC. How many more protons than electrons does th cem8(yo lm4.u)btd9xis piece of plastic have?

  What is the charge on 1 kg of proton+o) 0ry3iwqw ns?

  An atomic nucleus has a chargecx 5a yg9r0nm9w0lsnj (6r*it of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, suj z0 ) 6 lz*5;wqaqh3l/gotdleparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forw dhj6g*zu0l / 5;ql)oz3 ltqace between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0v ia:+i(pcbd,1.*g jfgr cz5e N. .5:cic,+b 1g rf*i (egzvadjp What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them8bac: ugu d.)x of 1.0 N. How far apart are they?

  The force between a )xu x4y( cd.aem .nsw0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expg3-4 ppqlsxq; ft f0ucb+ ,eq0erience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwe0s;p-tp+q,gfx4b q 3 uclqfe 0en them?

  Three identical point charges of 2.in4k6wy-:ikb 0 mC are placed on the x-axis. The first charge is at the originyik in 4k6wb-:, 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 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at 75lek z4d3 jk6x4e eiy:k gghb1+qmj3the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at 6d31 gq :3zk4m5 4kge+ky7hlxie j jbethe 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 follow9rybij*u5 y3 hw,s 9n)x w1v;tedq3 g*pxcq*bing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at qvd tuc5sh9jwx1ny r3y *3b *wgep *x,)qbi9;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 placed at th-,9cme8i grux e 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 txreim9-8 u, gche 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.-rm0m1 xn;96mljycw+ ov )yg.diy 6ii0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC ch wyirijim6m n6oy 0c19lg ) x+;.dy-vmarge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3p4+ g rcz;)wh bdw)42 bt bko0o3yki.i = 5.0 nC is at (0, 0). What is) );wozg 2k43bb 0pyb+d.oh4k rictiw the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed ri)nz 6oyu0tf)84tr s at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrosta )0)6otzs4uf rn yr8ittic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separate+s zucd)c 4an/ jk1t0jd by 3.0 m. At what point, on a ljsznac4 jcd 1k u0+)/tine 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 f wvcy fr/+,l2w wo 76+5dpkdax-1 2 +rspjttiat x = 4.0 m. Where on the x-axis can a third charge be placed so f +lspkw 2wdxipdy/fc-65t ojar++wv 1, 27rt the net force on it is zero?

  Charge +2q is placed at the origin and chargew b,7bnosh 3xmmj 14+ltwwp2: -q is placed at x = 2a. Where can a third p hw:3pmn2,w tm bj4s +71bowlxositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 - 4:vwly 6u4onb(mv1 nd+ ewugg. 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 aga ytqt1) o-8aco5as85t2dqe hyinst the force of gravity by the attraction of a fixed proton some distance above itq5y5cdyst2 o1hoate8ta8- )q . How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point9 nhu29sw4hyqcnq.39h o0zx n by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the uqc9.92 ws h9nz3h 4nox 0qnhyangle 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 magnt 4qa(57 gybipy-g4b t7 wljg(itude of the electric fieldj74wp il y5ag(bb(t 4-q y7ggt at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distancyu p9oy/vie(k6yc g:r z0p+m:e of 1.50 m from a 5v yyrg:(ym/poeu i k:9c+6z0p0.0-nC charge?

  A 5.0-C charge is 10 m from a small test cha.gao54xsmzar:83rw z rge. What is the magnitude of the electric field at rawsz48m.o: 3z5axg r the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thn:j/r5:qdfi( lj* scpe electric fieldjlin d5c :f(j rq:/sp*?

  A 5.0-C charge is 10 m from a small tes :l 5+qyruyjtyqvo40j: f9-js0o 8ne zt charge. What is the magnitude of the force ueyfj: ojoryn84 jq+ts-yv 00:l9 5qzexperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a valu- sqbg5 ks*lr5l/hvj-e of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway - jsrqhvk5-lg5 *sbl/ between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and gj :z)abpfmzj /9mc0/ a -4.0 mC charge is placed at the 50 cm mark. What /acm )z gjm0bj9:pf/z 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 and a -4.0 mC covu18 j.hqa8q harge is placed at the 50 cm mark. At what poi8ohv .qq1j8aunt 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 = id1r ;:)tclxgg i sz+*0 and x = 0.20 m. What is the magnitude of s)1z+ gi;rtg :lxd*cithe electric field at the point midway between them?

  Three 3.0 mC charges are at the thr 5.q t1)31qz(6asi(cqe :hkozpyuydt1h h/ reee corners of a square of side 0.50 m. The laphes/y:d1o6qz (5q q c()1t yt eh1k ziar3u.hst corner is occupied by 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 the ck3 lh4s89uyyvc l 5icg0vs .n1orners of the square as follows: +4.0 mC at (0, 0); +4.0 mC ath1vsl4c9cv0kynlis gu.8 35y (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 z97fs2y d )2n+rsfmes 5.0 mC when it is placed in a uniform electric field. Whatdrynsssmfz9f +e )2 72 is the magnitude of this electric field?

  A particle with a char3(yx/ddx6x q iccg 83oge 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 0.120 g is placed in an electric field of 6000 N/C pomkyxw ;al ha5 ;2+wmd(inting downward. What charge must be placed on the ball f ;a xy ;dhkwmamlw5(+2or it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is k/hp3, dme el21 n4cj8c7jyx. l124ckoidbs y placed insideckp3lyemj /c24bc k8y on71hels,.jd12id 4x a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius f8at-y )of e3a* dc:/qa:p8aty eh;tw 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sp/q c 8a-fyfd;: ea t8aeyw3ptaoht *):here's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is0lr)rmi4-x+ u z:vps cx.) xyq the electric field 6.0 iqy x.px) c0u+r rmvxlsz:)4-cm from the center of the sphere?