State the law of conservation ofx -:lpijbqkwq:u 9o 5, electric charge.

  Is it possible for two negativfl8m* k0yc54qc; ggoze charges to attract each other?

  Is it possible for a positive and a negative charge to arbdtnv -b9 ;vyb4rqwa/aew/tp.7(o, ttract each other?

  A glass rod is rubbed with a pi+ 0acta2harw3 .n khd mbnk.5by(9 u;vece of silk. During the process the glass rod acquire (t.h.m;nk b3 kndrb5y2aw+9 uh0vaac s a positive charge and the silk

  A proton carries a

  The model of the atom shows a,-ycz0;wnx2zv t ij(h

  A neutral atom alwaysd6mc . qf)x/zp has

  An atom has more electrons thant6:l nagd)3c x protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei abm8pls qs lr f0 q;pbnf:*dldi:f 0()0re referren pflrs blfsbp)*i( 0m;d :fd8 0:qlq0d to as

  Materials in which the electrons are bound very loosely to the nuclei andl f):sy4h4 l-tuwv+ ao can move aboua4tf)u sw4-lhyv :ol+t freely within the material are referred to as

  A negatively charged rod is brought near one end of an unchar 3zmc ap88bhk7ged metal bar. The end of the metal bar farthest fropbhm zc388 k7am the charged rod will be charged

  Sphere A carries a net positive chargnpcdn 5: u4w-te, 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.ctn d5u- w4p:n Which statement is correct?

  How can a negatively charged rod chargz(uo k f240xvre an electroscope positively?

  An originally neutral electroscope is briefly touched with2vldawad )v g h2;9fg)(p(eujg.7pzv a positively charged gl p flvvd2;)vgpgguah (d(7ewzaj9 2).ass rod. The electroscope

  An originally neutral electroscope is grounded 99bl)ts8bdm tiwg,g w6k*)ut briefly while a positively charged gisgl8tt9 bmtwub,6g ) k)9d* wlass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separa+d*5cl,hy x5a vi vmdzn0np25yc y3,b te. Then a negative object is brought near the electroscope, but does not touch it. cbl5amv5 xd5i,y 3n,y+ *hpvznyd0 c2 What happens to the leaves?

  A large negatively charged object is placed on an insulated tabler6s : bgij+ny8j x4cd7. A neutral metallic ball rolls straight toward tjijn 7 cs+bygd rx6:48he 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 constrlg75 fse)xjs*0i 0ia f1s*axant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fip14 mvgg3cw1vecfhf7b:5s s ;rst charge is larger in magnitude than the second charge.f;v f4 hv 71cg:e s13g5bpcwms

  Sphere A carries a net charge and sphere B is neutral. They are placed nearfuj,* 7 czjoir 6 ea9,)-hs ,4rapfayv each other on an insulated table. Which statement best describes the electrostatic force bez) cpv64oa*s,a,ahr,y fj79j r- efui tween them?

  Two charged objects attract each other with a certain f1pr0f rsz(tq2vw6,n iy7rx/zorce. If the charges on both objects are dou7s wr( ryvtzp 6i/fxzqr20n,1bled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrkm-p;ps h+0x ractive forces of F on each+pmsx; prk h-0 other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens r 3x rvbap4nu3c*.b7 qto the force between them if one charge is doubled, the other charge is tripled, and the separation distance between thei3br u* cb3vn7a4.xqrpr 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. What 4cu -f5h(41oohqsqba happens to the magnitude of the force on the proton if a second electron is placed44h-1bcuo 5qh( fasqo next to the first electron?

  An electron and a proton are separated by a distance of 1mg,mhi 13i/lp og98a j.0 m. What happens to the magnitude of the force on the first electron if a sec8jg,i /ghlim 1p3 a9moond electron is placed next to the proton?

  An electron and a proton are rm6s.16)jr9/ g dn u-d cqhnkrb ;sq0kseparated by a distance of 1.0 m. What happens to the size of the force on the proton if du;bn)s6 rq-q 90n1d6.k hgcjsm/rk r the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plajy13cbax-mtw dx3* *tsn rofv9x w 2-+ced 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 squ1bxanxd3xc-3m9t2v r -fwt+ j os*yw* are'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 centroid fsj4:, 1-w+r: h oub epk,qswkof an equilateral triangle. When a secondeps-b,k jh+ w ro w1f,4qsk::u 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 +Q placed at one of the other vertices?

  Which of the following is nk8g/c)zq+p 5btxk u5v ot a vector?

  At twice the distance from a point charge, the stren7e,ieicxnomi0 0i ,l+gth of the electric field

  Is it possible to have a zero electric fietl.j4m/ho0ir. p gqf)ld value between a negative and positive charge along the line joining the two chargesr)g.4jmtfpq0l o/i. h ?

  Is it possible to have a+8u*2onwk ci;ypv 5qr zero electric field value between two positive charges ac5r+8i2v;wnqoy p*kulong the line joining the two charges?

  Electric field lines neag+((b78 ;ll/hek ouj( zskkytr psitive point charges

  The electric field shm(wl8go 8g q bu/bru/6-- tra8tiw dg:own

  Can electric field lines xifolvey6n+focpes f tg*-a+ w w:529r,.s6rintersect in free space?

  A solid block of metal in electrostatic equilibrium is placed inaro(;-4btun h a uniform electric field. Give a staba;rh-(ut no4 tement concerning the electric field in the block's interior.

  If a solid metal sphere and a y/+h:u.ext9htg ks o8 hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfac.:8/ht+uxgohktey 9s e is

  A cubic block of aluminum rests on a wooden table in :f7vk7gql2p*z(c sh ca region where a uniform electric field is directed straight upward. Whals*vcgp7(f zqc kh7 2:t can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equil;/g9x)ogs ienibrium near an electric charge

  A positive point charge is enclosed in ae;c wf+. zs1hgby 7jv+ hollow metallic sphere that is grounded. Ashs.fzbge c;+yj7w1+v compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condu *9g7iognx-3fvyku m4ctors in static equilibrium.

State Gauss's law.

  The charge carried by onec hu*ne3)-)h 5jhmcq8l+ nbmcz *oxk- 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 pjb:7/8y cd sjmC. How many more protons than electrons does this piece of plastic hj cs/p:jb7 yd8ave?

  What is the charge on 1 8l+ wqgh- 6ugukg of protons?

  An atomic nucleus has a chdb9 ) t l4x2 2fu7 r/vuf/ccktqcj,jo;arge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by ndwwu0 q8m ani(ez2 u((qfo-9 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric 20u8zdneq9o naww f(-( ui(m qforce between them?

  A 1.0-C charge is 15 m from a second charge, and the f55byruv0y0 k l 4)o*e 6rtmesxorce between them is 1.0 N.ys l4 kvuoe0brm)0t5ry*e6x5 What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fcfbl k: u/-4epar apart are they?

  The force between a ikevp6fn4u 1.$30 \; mC$ 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. If th vo:woyi8 y:(pnk; tc2ey are mkp y2w:i:cto8 o (yv;noved to 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-axis. Thhf *t g.aww-hz55up08fs9s ozgcv1c5zv v5-t e first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm m 5zg1zgc5aho 9 fv 5stth8wc0 -wvupsz.f* v5-ark. 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 cska+siq/x w,s2 0ir 7yharge 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 whisq xyi02as+ki7 ,/wsrch acts on the charge at the origin?

  Three point charges ar)q/9xunl 3g bfz+7rcve located 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 f9c+ugz/vxb q) fr3 7nlorce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of )jgzsgr-h )0v,1 puvx.c .thh 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 third1vh-ph)cvur.js g 0. ,xz)hgt 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.t7gufz cn9t r5 /p(vm00 nC is at (0, 0). g(vrm /n9z5tt0c7 ufp 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 = zl5 kux1 6rq3a5.0 nC is at (0, 0). What is the direction of the n3 kqazrl6 15uxet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ i,hjw1 al u6m 7x8qkrr*1le+uilateral triangle which measures 30 cm on urh 6rjmk8,x ai7 l+1*1uwqela side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. pwf( iiu5g ,a5At what point, on a line betwefiw a,piu( 5g5en 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 +9ztrwhgar7x9 -5xywj2 -b. 0xiu 8hks 9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forcuxh20xzys wr -a75 bk wrj9.xig9-8t he on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe;ac;s ( d8wrxyre can a third positive charge +q be placed so t arc;8w; (dxyshat the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of5b5 p9hkkrc uv)l*ur0sii9o * $4.0 \times 10^{12} \; electrons$ 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 f9 i a)dk9zfimcrn1j z13+b5r4 k62xldp(q stjorce of gravity by the attraction of a fixed proton some distqpd43fzj)l b1mnc9ati 9ikkrr 5s1zx(6d+j2ance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a vo2t* c5+s xdonr3wf3common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them 5f*s+ notdx vwr 2co33apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a ch p.gfhtvabc+:,e7k vi 6zmwos o*7y85 arge of +40e. What is the magnitude of the electric field at a distance ofwa :cg.zy5+v b*othvi 7m7 8 fpsoe6k, 1.0 m from the nucleus?

  What are the magnitude and directiongw(0jln p; t/nwq q;q,j )r0kf of the electric field at a distance of 1.50 m from a 50.0-nC charge(,k; wqq0;w n0lj / f)qprnjgt?

  A 5.0-C charge is 10 m from a small test charge. Whats0ad0ea:yvl 3 is the magnitude of the electric field at the location of the test ch la0v3:sdye a0arge?

  A 5.0-C charge is 10 m from a small test charge. What is the directionh+j q4bwe3 0eq of the ele0jq4h3 e bqw+ectric field?

  A 5.0-C charge is 10 m from a n 4ztcih:z1z yix94(t small test charge. What is the magnitude of the force experienced by a 1.0 nC charge place nz 4:ixtzht9zi1 c(y4d at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distab ilv4v74dx;hk ;r:i ynce of 4.0 m. What is the electric field at a point midway between the two 4l;ryd:vx;ivh7i bk 4 charges?

  A 5.0-mC charge is plq z26akzgv/el uy0g- *aced 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 electz0kvua- gq2 el*zgy6 /ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a (e . 5e8qgpuxxmeter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is te(ex u58qxg.p he electric field zero?

  Two point charges ofpx3xinw0-t8 e +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitui-xwn38p e0xtde of the electric field at the point midway between them?

  Three 3.0 mC charges are at them)( ,ozvgoi g) three corners of a square of side 0.50 m. The last cornz)v)go(mg i,oer 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. Charw:dd f11mdps3ges are placed 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). What is the magnitude of the electric field at the squwd:ddfsp 31m 1are's center?

  A force of 10 N acts on a charge of 5.0 mC when it is plac.az qx(00,l9yyjeap+k j)qy red in a uniform electric field. What is the +xy j)a r.kqa pq0y0 z9j,e(ylmagnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass wp.()x8reozdre 9 a9 sof $5.0 \times 10^{-3} \; kg$. 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 electrivee8 -yl ze uk2 pnwrm+x+;+3uc field of 6000 N/C pointing downward. + w ul;3e+v2-8ynue +e pzkrmxWhat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balll;p: c x x)w2z6sbg7mj is placed inside a uniform eleccxs)ljp2:;z 7 6gxbmw tric 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 of +2.0 mC 1p1d);iw8sv1nlnfvc . What is the magnitude of the electric field 5.0 cm from the sphere's surfac);l i1spvf8 nd1vw 1nce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wh tg0avs ( kpez.*g:idn /q -o0:2sqvidat is the electric field 6.0 cm from the center of the sp0os-(*qgidtzsi 2ek/dvp: gq.:an 0vhere?