State the law of conservation of em6fm6cbcum0a j;s5- llectric charge.

  Is it possible for t*bvdefl v2 k*0*x)yyo;jb-suwo negative charges to attract each other?

  Is it possible for a positive and a nemisjo+ 5odgtu); :c*uj-0gpa z) 2t wegative charge to attract each other?

  A glass rod is rubbed withd1k+gi)1z pld a piece of silk. During the process the glass rod acquires a positive charggilk1d1z)p + de and the silk

  A proton carries a

  The model of the atom s2r(qc 8+ jy2cz6z bsoshows a

  A neutral atom always habu3 bx1)vpx o7s

  An atom has more electronyk:zce 3l/azcp6k ( 2rs than protons. The atom is

  Materials in which the electrons are bound very tightly y(mbfzcze711ck ) 4zm to the nuclei are referred to zb4ky e(1z) fzcmcm17as

  Materials in which the electrons are bound very loosely g0,0i)drr/8 t d6ymv0lzml , bij; uydto the nuclei and can move about freely wurjb0/8 dzg0 l;dt,0 i)6ymmd riy vl,ithin the material are referred to as

  A negatively charged rod is brought;*n3tze2pr g-dc /lzr near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargeez3;cdnt2grl-p *z / rd

  Sphere A carries a net positive charge, +vccdvxpl- fu:ysjz p w/) (,6and sphere B is neutral. They are placed near each other on an ivx+zy ,c6wcu:fp -pdls )j/v(nsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cha9upcu(a6 l v.brged rod charge an electroscope positively?

  An originally neutral electroscope is bj0wn+w.+jn5xt+w v n8.6 c*w h zimbusriefly touched with a positively charged glass rod. The elec* 86.0nu5w +hst+vw +wm nnz.wjbx cijtroscope

  An originally neutral electroscope is grounded briefyj*r)ayl e) yo l1nqkb*tu.0) ly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscope )y)tuyajle.)on0 *b*lq y1kr

  A positive object touches a neutral electroscope, and the leaves separate. T*tkaj yi0.e(uhen a negative object is brought near th a(0u.j*iy ktee electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged ob 2 ar9)dwwug6pis3i-c ject is 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 theiadpc-69 rusiw 32 w)g 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 th9vnh/ 7zm4amlon(dxp2zc z* 83u r.nhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separate8frd,.kodigd - 7 y8bz8y.g)rtfc su/d by a distance d. The first charge is larger in8orb.7gd -fs,ik yu/fd.rzt8c 8d) y g magnitude than the second charge.

  Sphere A carries a net chargcqi gso2s7rd.ai:,pe5di b 5+q7mb o44ci*dc e and sphere B is neutral. They are placed near each other on.gi7bmd42,4*d: c qcs qeps7+ibc o5oi5dira an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eacl+z.pfw07u(/j pu *abdo zh,dh other with a certain force. If the charges on both objects are doubled with no change in s,(7.hpdpfu ozz wbl*u/0 jd+aeparation, the force between them

  Two charges are separated bllvloj+)2fk k :-;yhp y a distance d and exert mutual attractive forces of F on each other. If the charges are sep2p-jl yflo h)vk+:lk ;arated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract ea a -saddcg4, (wq 4c/nhge;(npch other with a force F. What happens to the force between them if one charge is doubled, the o4 q ( agdpw/,a h4s(dncgen-c;ther 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. What happens z edar :j0;ccr0:op5mwg( j; m5w.fem to the magnitude of the force on the prg5m(je :dz c: ;e5pcfr;j0mw0am r .wooton if a second electron is placed next to the first electron?

  An electron and a proton are separated bg+3fzu;0hx5 0ywhjy by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a sw03zugxh +05ybj fy;hecond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What mc 6z,8ny5xup happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proto x5cu6ynpm,8z n?

  A point charge of +Q is placed at the center o3aou;ha5up eu k(z/.kz2d t7yf 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 magnitude of the net electrostatic force act ku a;d/7ut3zk5h.ae uz(oyp2ing on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an e z arke(nk.46equilateral triangle. When a second charge of +Q is placed at one of theankz 6k4 .(ere 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 followitb* p:m;qqc bj0i ac0i35udf5ng is not a vector?

  At twice the distance from a point charge, the strength of the electrxu6v g owgz1,)ic field

  Is it possible to have a zero electriu+k mmyr8*1 zxg:w4ng6ph 6psc field value between a negative and positive charge alzgm8wn4gryp +6m*k xhpus61: ong the line joining the two charges?

  Is it possible to have a zero:1 azcvv)y:a6wwd-9dqy q op/ electric field value between two positive charges along the line joining the to1d qc-a z ):y9q:dvw yapv6w/wo charges?

  Electric field lines near psitive p(dwi ,qtk ,3 og3zto)point charges

  The electric field shown s2fbyvpmsn 00,d1p7i

  Can electric field lines interseg(v+8 gu b5cdxct in free space?

  A solid block of metal in electrosta51w(,vbtupia y:cu2ztic equilibrium is placed in a uniform electric field. Give a statement concerning the el2wtzy 1(cp,b5: vuuiaectric field in the block's interior.

  If a solid metal sphere and a hollow metal spheqd 4.re8/ enjd4: wzn k6lf-ksre of equal diameters are each given the same charge, the electric field (E) midway betwee8n e4kz: fs/d6kn.wjq4- rld en the center and the surface is

  A cubic block of aluminum rests;;k cjzd/+o k e1wwvy7 on a wooden table in a region where a uniform electric field is directed straight upward. Whkyj;zw e+cw/d;ov 1 k7at can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric r-7pqpoim d,q398osrcharge

  A positive point charge is enclosed in a hollow metallic sphere that is grounb exi u x2b/6iqkmt3, 5g/wx4dded. As compared to the case withowgi43 b/i dxmq6ux,t5/x ke2b ut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static efu:y -)vjqk*b. z.d bch,jy-gquilibrium.

State Gauss's law.

  The charge carried by one elek8 pq641zpwnjctron 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 whi ;v ,ipbn)3more protons than electrons doe3 ) ,ibnhpvi;ws this piece of plastic have?

  What is the charge on 1 kg of protqlxke96. -in b o1qz.eons?

  An atomic nucleus has a charge oja-*83cb kui ps,,xwpf $+40e$. 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 value am:v1o, h vaszkb8r*,s of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betvbra :o z,ka*m8shv,1ween them?

  A 1.0-C charge is 15 m from a second charge, and the forc svivso .3 v6zr+bb,9h,n)x h l(t)ftle between them is 1.0 N. What hli. ,z,lt3 s onxvt)v)+f (b6hrb9vsis the magnitude of the second charge?

  Two 1.0-C charges have aygx4,mmup9 yagz-y.sk,, z +jk k87 gg force between them of 1.0 N. How far apart are they?

  The force between a f c/hm5l5x/mx 79h d i5faa6cjf6-mup$30 \; mC$ 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-j2-:.pn9 g lyt+jj upcN force. If they are moved to a new separation : p29jcu p-tgy+jjn.l of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed pojvz hs )vneb/;i t9,) md1:won 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 direi)o tpe m9/djh:,zbv 1;s nv)wction 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 ;q3hw3fs qbiuo/ u haj+:4h*uplaced at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 10hoh3qus:ub4h /uq3w+j;* afi0 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 following positid:+z9/kmn toghum+:* i r. v,+u*ou4btai l ibons: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; a+. udmh im b+t:i,r :bnuov* t*z9o4kgu+l/iQ3 = -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 the center of a square, and a second point ch8haxza at *ob(9y-t b1arge 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 thir-* t81a xbbaaoh9 z(ytd charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = lpky 0;g;v.0h90sdqrhc owd(4zv k e +-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcsyo(z0ke d;04v glq.+v wckh hp d90;re on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at g1a) x alr;xz*(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the nxza*r) ;a1lgxet force on the 5.0 nC charge?

  Three identical charges of 8d 3cpzcd rs.j0z -/gt3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which act .tc 0gdjrzd8c-sp/ z3s on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.udgp 9(n3z(dd 0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the elec3u(dp gzd(dn 9trostatic force acting on it would be zero?

  A +3.0-C charge is at the og) ta2 xu3) gfuj:.mkjrigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axisgm g)k:. 2a jj3ufxt)u can a third charge 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. Whereu, s-huoe yi7csed;:s hu ((3r can a third positive charge +q be placed7isossh- ue(d y; h3(ue,cr:u so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total8vkg4yu6v0ytr n y7 e, 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 gra ,y9y8:x cdjitvity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?d:c8 ,xy9ijyt

  Two 0.20-g metal spheres are hung from a common point by noxtv:zxs8)z* ; (bj vcqnconducting threads which are 30 cm long. Both are given identical charges, and thct 8(sz:v*x;bxvqz j) e 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 ofpm0 xaz. u-,tuxn3 .qid7j j/v +40e. What is the magnitude of the electric field at a distance of 1.m jz.xa-dvju qnt3/u,. 0ix7 p0 m from the nucleus?

  What are the magnitude and direction of the electric fieldrvkbf7tk k4s0i:7v2l at a distance of 1.50 m from a 50.0-nC charl77bvv ikk:ft 4s 2r0kge?

  A 5.0-C charge is 10 m from a small test char,*tvdpqhg l8n.yi3z6 ge. What is the magnitude of the electric field at the location of the test chargzg3y8*vtil.6n h d q,pe?

  A 5.0-C charge is 10 m from a small test charge. What is the direction bv3qsymj5c145 9jx tw. :xd onof the electr3qcsm9w5bjt xy v41n. :jo5dx ic field?

  A 5.0-C charge is 10 m from a small test /ahz: .y:nsli charge. What is the magnitude of the force experienced by ishay :: .lzn/a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a( 1hfgjjl.3dqv5 *msva-)ach value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a * afd-msvaj).jg3 hlv1cq5(hpoint midway between the two charges?

  A 5.0-mC charge is p3udr 1 8c-db,nv4 nzs9 gksfm9laced 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 electric field at the 30 cms 9 scfgb-u9r n,zd8dn34 kvm1 mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mc wcw+ xzv qg) +anh3lp4-o.6meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charcpog6 zq-.nchvx 3mw+al)4+ wges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Whoub r 5:tml6i1at is the magnituou ti6rl5:1mbde 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 0.50yijcqbyl o17liflj, nlb : -.-ib,2 3y m. The last corner is occupied by a -3.0 mC charge. 3-l oy:qljlfbibic7 2y 1jb l y.,ni,-Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed awias 630k fihxl1jn b- 0b/tm7 i1ukp(t the corners of the square m - 1ii6(ka jfwt31/ 0xl7hbknps0uibas 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 chamam puo 7h-76prge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude p -7pu7moa6mh of this electric field?

  A particle with a charge of 4. wjick4-: j viv.q1b7p0 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 i8+ph gqk8,tj-jn1 mca u 9*xgxn an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspxphj,8mgq9u-a1g x+tj *8nkc ended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed i2k9eq-yv7jd xml/ex8) py6xs0t +b( sd9pg ejnside a uniform electric field, and is suspended against the fvepx(q9-mx st dy2x)bky gdj0+8679p s lj/eeorce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0m5 epmr o3lp-7 mC. What is the magnitude of the electric field 5.0 cop 53mmp e7rl-m from the sphere's surface?

  A metal sphere of radius 2.0 cm carriegq )7.quohcm parr-81:ndzl-s a charge of 3.0 mC. What is the electric field 6.0 cm from the center of thqrl1z)r: gdha umn.7co- 8 p-qe sphere?