State the law of conservation of9 epf9a0zglv.ygvsyy*) 8(d zk luvwa/6y; 9j electric charge.

  Is it possible for two neg;6xtb*2rrz vv ative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each64z ,y ua1- inu;v wp8h1qhhrn other?

  A glass rod is rubbed with a piece of . s0agltz9iv 7silk. During the process the glass rod acquires a positive charge sgt.0za 9 ilv7and the silk

  A proton carries a

  The model of the atou;er6lk p9lj 5m shows a

  A neutral atom alway-hyecyl 13 t xx neqc,5.;nmb4s has

  An atom has more electrons than protons. The a *4g9etv*x ztttom is

  Materials in which the electrons are bound very tightly to the nuclei are 29fau y6zf6hvhp0oun5 c :df5referred tof 95df6u 0 nzhf hc6u:5vay2op as

  Materials in which the electrons are bound very looseo. ull 5)a(pzg/zl6jsly to the nuclei and can move about freely within the material are referred tzo/au)l 5plz (6.jlsgo as

  A negatively charged rod is broug2x8 vp0j pv/kt j3rj1dshv 58bht near one end of an uncharged metal bar. The end of the metal bar farthest from the chargej8p s2jtj3 1bvhd5 vvp/k xr08d rod will be charged

  Sphere A carries a net positive charge, and sphere B is neut8gn x4wr mmw 6x ssrzti-s5*68ral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stat 8n*mmr-iszx56wr xt 8g4s6wsement is correct?

  How can a negatively chargerm gb.a+z bp1:oi)akrr*ndx;. r) f,qd rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pojoulqp 9u8i +tsq 2(.lsitively charged glass rod. The electroscopel8 qouls(pt ji2qu9.+

  An originally neutral electroscope is grounded briefly whi6 ,m2ciny 2nf,;lz )qsp4yj wele a positively charged glasz nw4iy6ysec; )jmpf ,2n,ql2s rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches acvb,y. qnc+1-o(n fz-j o:nu/( i yhzg neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leayi-cqn-ocvzn(. fghu+:nb,y1 zjo/ (ves?

  A large negatively charged object is place3 f4p6.9.ul6gp mx slxmxw vp*d on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolxf 6ll3.x6p.psu mgw49xp *vmls 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 consta)/b+qujg wgo c7r 2/nqnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance doyp:nzc-s*. u .6lcc;jxy:kh :zq u(1rqtfq 1. The first charge is larger in magnitude than th.ps*c q.y61n j q;txozch: q:r-lcfz1yuku:(e second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placx7j7gl 3 no hsejo30a(aeh)z ,70nghfed near each other on an insulated table. Which statement best describes the electrostatic eo 7soeg0an j0h7j,)33lnhx zgh fa7(force between them?

  Two charged objects attract e y(okk41( cvbs h96h(3kfui yjach other with a certain force. If the charges on both objects are doubledkb1((iyfy u96 (vhhc4 sjkk 3o with no change in separation, the force between them

  Two charges are separated by a distance d and exert mut lf1;hl(nkhmk0uszu2 e.1xj-ual attractive forces of F on each other. If the charges are separated by a distance of d/3, what ar .-le m;ufs21u 1h hxnkk(zj0le the new mutual forces?

  Two charged objects attrahee i9y :hn) sbup1/7hct each other with a force 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 fuh 71)en is9h/hpbey: orce is now equal to

  An electron and a proton are separated by a distance 5 sme9pv.m4ze7h)m hr of 1.0 m. What happens to the magnitude of the force on the proton if aev) h4 mm59 zmr7phse. second electron is placed next to the first electron?

  An electron and a protonl:fd h3xc8t-87bvtp-qb0ihh ldb 0f9: s8 ult are 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 n0hl078 sbtbl-3 d9qvf c:tfl8b 8t ih hpx-du:ext to the proton?

  An electron and a proton are separated by a d+u )o 0cfrhb;aistance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m )ao r+uc0hfb ;closer to the proton?

  A point charge of +Q is pl+g fg(+nc9hv4vl vfm1 aced 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 square's center. Now, identical charges of -Q are placed at the l +m(hvg9vfg4n1c+fv 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 of an equilateral trz 2cb.n47e-6 qmvb1p,c,tznlzl)y ow iangle. 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 ceno614zb ecvn c q ),,z2.n7wybl-l mtpzter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is r2s:4kpxn:v9w xcqz2 not a vector?

  At twice the distance from a poi o2sadnshif9v4 h05b* 4jt:mant charge, the strength of the electric field

  Is it possible to have a zero electric field value between a wmx4/))u(g1lpixp /lii c . ksnegative and positive charge along the line joining the two ch)ps4iku cp)xximiwg./l /1( larges?

  Is it possible to have a zero electric field value betws) wtc g7-(-pha,r4audh bkn;een two positive charges alc-h nwpua brg ha(,k7d);t-s4 ong the line joining the two charges?

  Electric field lines ne2rm+z v // dq0vg.z ngl05qjmxar psitive point charges

  The electric field sh m)ezt*t5m qxi3y*3ltfx:7l eown

  Can electric field lines intersect in fr ded(ao 6ii ch 1kmim9em)*81kee space?

  A solid block of metay nnm+idg f-,0l in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric f,dim- +0n fygnield in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each 6y,. kj;cu.:e qf* im yzbm,ilgiven the same charge, the electric lfqy ,i.m:y;j* ,kec.ibm6zu field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a re1i01zrj xvf9p-k c n1e6-tgxvgion where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's toprvfe ni g-x-xp061 ztv9kj1c 1 surface?

  If a conductor is in electrostatic equilibrium 5 cwsz f/0w58of fe,nh3yxa8xnear an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ek ujct99g6f 7grounded. As compared to the case without the hollow sphere, the electric field at a point directufct ek6799 jgly above the hollow sphere has

State three properties of co1nw p76zka g pxrasi8r*z;5h8 nductors in static equilibrium.

State Gauss's law.

  The charge carried by one electikg7m8 (,t0.y fzdjz:rjan 6 xron 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 c iyn 1e3ql8cx*b288,:qq +zdykmqnb charge of +2.00 mC. How many more protons than electrons does this piece of plast1qyqb82 8y+k ndl:m ixb c,3q8e*cqnzic have?

  What is the charge on 1 kg of protohvv9)1;qxk8m c +n-kj3kdm ;aq;jhb cns?

  An atomic nucleus has a ch c/15 -b4a m,ahnplayzarge 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 z)mlg: op*3x/m d5jojvalues of 2.0 and -4.0 mC, respectively. What is the magnitude of the elect z:x3olojd*5j )/pmmgric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between the9rm7 gogi/t:s m is 1.0 N. What is the magnitude of the second charg 7:/rmgogsti9e?

  Two 1.0-C charges havivz2(oj6 n3qqe a force between them of 1.0 N. How far apart are they?

  The force between a o o. 2, h5ejlaze)(ye2)bb+h(nbtlcq$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initipa8esdca ky66vdty40 qq0q6 2 ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwyk2 e8a06d qc66pt0yqsvq4adeen them?

  Three identical point charges of 2.0 mC are placed on npvv ww*3 9hv5db0cs-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 electrostatic force vd5 bp*c9vh s3-wwn0 vwhich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +u s dat05ywlyrv9 +a5;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 ;9r5+tyaul5 y dsv w0acharge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x4 xr-anhg3 1mv = 1.00 m; Q2 = 3.00 43hgvax1 r mn-mC 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 placed at the center of a square, and a secon k8j6edx wp974tdsr0tl:riv: d 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 charge of -Q is placed at the lowedwjti6s809r: rt4:e pdk v7lx r-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0-:g hrem 1yotr4)spl6 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forc ser)h 4pgy:16-rmlt oe on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0j+zsz5eq-u2en10 b ky , 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force-kj2501uqy bnee z+sz on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the7z8zbtf(p uwdqkp 55 v/m s5j8 vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of thez5z8/pwq sp(jm5bvt u f75kd8 electrostatic force which acts on any one of the charges?

  Consider point charges of de : z.i73;olfw5ueh b+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, i ;e:zb5 el3fd7o uw.hwould 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 = 3y k6.n popx1r4.0 m. Where on the x-axis can a third charge be placed so tkp3 yr 6ponx1.he net force on it is zero?

  Charge +2q is placed at the origipj-r-d5ka(tz d;j 9.lhi v+o+ltiwm- n and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zerl(ladtio-vd-mjw h +-ztr5; i jp+k 9.o?

  A copper penny has a mass of 3.0 g. A tot ckn14vhsg/a: al 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 gravity by the a2kzxll(; ;meu ttraction of a fixed proton some distance above it. How far above the el ;lm ezklx2(;uectron is the proton?

  Two 0.20-g metal spheres are hung fro5nshsoq8fz 1p0yu u8; m a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until to u q;s1 88zyfhusnp50he angle 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 magnitude of t40xye60k o4pyy t+to(pj56 yi woe,o hhe electric fieldot, thpoyp(o+ 0xy5jkw6o ee 0yyi446 at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the el)0o9 tx ifh6fdectric field at a distance of 1.50 m from a 50.0-n o6ti)dh fxf09C charge?

  A 5.0-C charge is 10 m fromdof)vj i/ g)vk3iy wnif/;cwfa n/4: g ./e8xa a small test charge. What is the magnitude of the electric fielknx eg 4/dvo)g fa/av3)wcif/: ; i.yn8 iwj/fd at the location of the test charge?

  A 5.0-C charge is 10 m fh iwx-e*m/ apu24g)rfrom a small test charge. What is the direction of the electr a* rm2xep)/ifwh 4-guic field?

  A 5.0-C charge is 10 m from a small test ch iiz+c +eb:kx.xvnxz ;avssw4w(w(2 :arge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the t2+xewvw;zb4 ai+cv szxwk:n(x( .s: iest charge?

  Two point charges each have a value of 3.0 C a 2 b42bcew5vpi2pbx5ond are separated by a distance of 4.0 m. Wh2 b42pb5vx5ec2ip wobat is the electric 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 -4. -puere8/-a vgb qii7to27w)f0 mC charge is placed at the 50 cm mark. What is the electric field a ) -witb8-f eova7/ eq7rp2giut the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter jg)wm*m brz.el fi:ct.4t5xuactbip /)p410stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is t)t eb mf/ gta:zi.c *ibp4 xp45ru)jc 10mw.tlhe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Wqd0 4gmj- 3gri vktu97hat ismt03iqk9gg-47ruj vd the magnitude 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 0.50 m. The uovd (pc .xavm4qze73t0l+(q 0m)qzq last corner+(.4 c 0v aql0qx moutpdqvq7zmez() 3 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 th nz:o hbo50xz5xvpg .)e 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 gzox: bp5xvzn5o )0.hfield at the square's center?

  A force of 10 N acts a .c yp(06k jhrvtap84on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this .rh(4tpcjaakv0 y 6 p8electric field?

  A particle with a charge of 4.0 mC has a mass k jt ziw):(wktzf; p1 ytp(60lof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed ebljpn;qg *x (+5bs62 g dbhw+in an electric field of 6000 N/C pointing djeg;2qd 5*hb6+(gnxl s+ bpbwownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ,i gt d6y;zz;vc6rh1x of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What ar;x zc hg6;t,i 61ydvzre the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries qq6 gp3 3a2(jh tru-sja charge of +2.0 mC. What is the magnitude of the electric fieldr(s3 q 6pu gqh2jj-at3 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. g* r gp0v hk;(m:i su7hbz4hf0 What is the electric field 6.0 cm from the r:g pzsfm07vu; gh0bkih* (4 hcenter of the sphere?