State the law of conservation of electric charrn- l428 qzywf i-g,upge.

  Is it possible for two negative charges to attract each9ht*ie*u z),jbeqi .bnym rr03tb*) d other?

  Is it possible for a positive and);k5f.rum5 zyve ny9q a negative charge to attract each other?

  A glass rod is rubbed with a piece4nn1eb/ npi)x of silk. During the process the glass rod acquir ne1b n4ip)/nxes a positive charge and the silk

  A proton carries a

  The model of the ato)7 :pc2qhbx-cx nfv*qm shows a

  A neutral atom always 6utamb3.wjrf v (/(eehas

  An atom has more electrons than protons. The a7(tci nc: myy-tom is

  Materials in which the electrons ar9m f3qdj 38nxle bound very tightly to the nuclei are referredqn 8 xjd33fml9 to as

  Materials in which the electrons are7(dbx:qp* fs1o :gfyyi eqc26 bound very loosely to the nuclei and can move ab(f:d q21yb yxi*pcs7qg e:6ofout freely within the material are referred to as

  A negatively charged rod is brought near one end of wc38;zt hzrp,an uncharged metal bar. The r cp;,3 hzztw8end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net po.hn 8vss4hn c(sitive charge, 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. Whic vhns4s h.8n(ch statement is correct?

  How can a negatively charged 2,zq au8de;2o 3efkverod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a p max36a h,oou5+ -shzl ;whu*lositively charged glass rod. The ele+al o,uwomu6lh h*;35s- z xahctroscope

  An originally neutral electroscope is groun/ i++pymluwtyi :;:f e5r bme6ded briefly while a positively charged glass rod is held near it. After the glass rod yi6;f wub et++5lr:ep:mm/i y is removed, the electroscope

  A positive object touches a neutral electrosco l1q1nb;q.kzwk/ nk- dpe, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the l.w/z 1;kkqnnb1-ldkqeaves?

  A large negatively charged object is placed on aq+ylp;: k0dnh ;vd;d3wdy,ogn insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches iy kd;0d 3dd;w gn hoy,+lvp:;qt. 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 t:dpl9.u x8x ph wt9ep-he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i(k9 d a l/3db0f pccajqwod7 dpv-h5:.s larger in magnitude than t.p(d c 3khp b9of-/0 dja5dd7lvcaw:qhe second charge.

  Sphere A carries a net charge and sphere B is neutral. They aremak,c *1+1wg i9txgqh placed near each other on an insulated table. Which statement best describes the electrostatic force betwe+a9m tg , *11wqikhgxcen them?

  Two charged objects attract each other with a certain force. If the cgjf; c h/6qil4h -mer.harges on both objects are doubled with no change glj.r 4 ;if -meh/6chqin separation, the force between them

  Two charges are separated by a distance d and exert m)wc e*ehrm7gn3cue 38utual attractive forces of F on each other. If the charges are separated by a dist 3m)e*gree cucw3nh87ance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What ha evs7z yi(*fa3msqr k96gh(e9ppens to the force between them if one charge is doubled, the other charge is tripled, and the separatiqs(ma7er*se3v 69 hgk iz(fy 9on 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. Whatfx5 srn ss; nmfvlpd; y;*9f1*q .3mny happens to the magnitude of the force on the proton if a second electron is placed next to the first electronfr ;q3x;yd*s m ny.s1nf9sml v;pf*5n?

  An electron and a proton are separated by a distance of tfhs;ef h iesj9,z o3f :4*ks-jj4cw 71.0 m. What happens to the magnitude of the force on the first electron if a second electron -f, f34;zsesh4 keshj ijwo9c* 7f:tjis placed next to the proton?

  An electron and a proton are sywqgh*6 jomi,i-/93zit owb (eparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.503jt(ioi wy b-zo mgw6 ,qh*9/i m closer to the proton?

  A point charge of +Q is placed at the ceniogsh;xz(;nq 8zg 0o-x 6 b4cater 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 other three corners of the square. What is the magni-zons8gq(x0b i;g xh6ac 4zo ;tude 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 triangle.25idbhu4x)h u When a second charge of +Q is placed at one of the triangle's vertices, an electroh45u bxi2dh) ustatic 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 tgm wy/jbtq 7x)raa/)xkdh . f;cx6 ).is not a vector?

  At twice the distance from a point charge, the uas0,qk;)kb(f 2owj66o 0cjvl 3zutx strength of the electric field

  Is it possible to have a zero electric field value b )sebeqmg )/h;etween a negative and positive charge along the line ee;h)qm gb)/s joining the two charges?

  Is it possible to have a zero electric field value between two positigtiv)6j*6 0j* ww bewzve charges along 6tv 0egz)jwwi*bwj6 *the line joining the two charges?

  Electric field lines near psitive point cwwa ,r+*9 :7m67m:fs ce pzg+njsi rqsharges

  The electric field shoqkg am.8ww741vcuaz:s6g s ; wwn

  Can electric field lines inters m5 h pgr3u c)*n1t5frt)swz.og3 pho-ect in free space?

  A solid block of metal in electrostatic equilibriumwp l9z:g 3fw8o is placed in a uniform electric field. Give a stlz:ww8 3 go9pfatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eapm..v8 d-ph jvch given the same c8 hpvm-pdjv. .harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests d, 3w mcfu)dp5u y vkwuhy7+8(on a wooden table in a region where a uniform electric f5kc u)yyu (,m7ud3v+f8 dwhwpield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ujk.oezj :5s )l5uo2d charge

  A positive point charge is enclosed i4vh1he k *7zuon a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphh 4evo1*u h7kzere has

State three properties of conduct-*u;u iwkprx m(: 4rnmors in static equilibrium.

State Gauss's law.

  The charge carried by oneztc)1md8 yr0h*;1quq) thyz , sf*hr0i(yv rn 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 -hlvp:5/srt)zj92it d7nhzb(iya 2a protons than electrons does this pie9vj/sz5i nzitr -2aa2dlhtb7)y:p( h ce of plastic have?

  What is the charge on 1 kg of pr -wy/+ks xa:ytotons?

  An atomic nucleus has a charge co*cyucyq ;sw1; l4: jof $+40e$. 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 e,ljd:i9 )k ipof 2.0 and -4.0 mC, respectively. Wh je): likd9,piat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bgu,og+;hfg-q2 +mi hjetween them is 1.0 N. What is the magnitude of the sec gg+jqom2 hifh;g +,-uond charge?

  Two 1.0-C charges have a qth3b -wpgs,9;pq / efe 2w5ckforce between them of 1.0 N. How far apart are they?

  The force between a if+ru+6awuyb92hv lg 1 5shd *km -w6a$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, x/e6fi rl:tf r9g(zq6experience a 1.0-N force. If they are moved to a new separation of r tqf69f(: lgrx6z/ei8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fir i3z 7,ok+4x675axusxn zmh bust charge is at the origin, the secox,s6+ zmbaih x 7k7zun534xo und 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 ,ew25pu4muzkthe 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 at the orig2u4m ,up5e zkwin?

  Three point charges are located at the followinguiezsubx o(i 26e-5n7 *fbi )h 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 m 6nuiei(o bz*2) h-fie7 sbux5agnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a seco,)b*1 otcix/zabjr s s2j1h 7yiq/n,d nd point charge of -Q is placed at the upper-left corner. It nd*xz 1 j/1 hsc2i7tj os,)a,ybrbqi/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 = 5.0 nC isbzi/ w0sr9 ky pbvx77-d( id4j at (0, 0). What is the magnitude of the net force on the( j9 v7bd wx4p0s y7idb/rk-iz 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,;x m 0w i8cmtdwpmm06, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the md ;w0m0,pmc6 itxw8mdirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC akba*;6y uk) anre placed at the vertices of an equilateral triangle which measures 30 cm on a side. ykna b;au6)* k 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. At qzysa..h)p1d*lz ywb l6* .dvwhat point, on a line between the two charges, would it be possible to place a charge o6 *q*l b d.lay)s hz1pz.dv.wyf -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-Cm1 kjm8,lj, umlsp1fjax 4q */(9 iaba charge is at x = 4.0 m. Where on the x-axis can a thuaj b a * ,19f jpkqx(mlmli,aj4m/18sird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chain +d 5ep2cpw hbinac)49, z+lrge -q is placed at x = 2a. Where can a third positive cha 25zahcwl4n,9p )idbne+ ci p+rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 dv gm)(t;(q/ax,j 432rldm 8eybobkc 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 the forcygf rsj:ib01a21. za he of gravity by the attraction of a fixed proton some :.0 agfjrs1biyahz1 2distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadsk 5cxf* 4u*ly 5fx2 i l(u(;ejl dmae-l;zg+ov which are 30 cm long. Both are given identical charges, and the e5u(oxk25 f +m*ge;( ly a lvxlj-icef 4;ud*lzlectrostatic 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 of +40e. What is the magnitude of the electl5ya*-*ns y,d c4yo:tr 3oeg rric field at a distance ot:ooy5 d3 ,gl ne ayr4*y-*crsf 1.0 m from the nucleus?

  What are the magnitude an*8cg /kqnim /yd direction of the electric field at a distance of 1.50 m from a 50.0-nyg/qi*/ nkm8c C charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e;6jmh3h 91,opapcc)s wufji cwm; * -vlectric field at the pc,3um )6hh ijpvfw ;a;j som c9cw-*1location of the test charge?

  A 5.0-C charge is 10 m from a sm3sf* d/)1g3k (.ma0d -l/wu ziaus zfrmybav3 all test charge. What is the direction of the electric fi /zuf(wsk3mz -/msg i*ad3b0r1vf d y.u)3alaeld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofr 5svs l/9k*j2sx- k0r (umqyq the force yxm j520qs ksrr /9u-klvs(*qexperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a ig 4;+i jahx0qvalue of 3.0 C and are separated by a distance of 4.0 m. Whga;0i4qi +j hxat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the vl.:uco*.+ mp68eb kz me ux4d-qz h-u0 cm mark of a meter stick and a -4.0 mC charge hv o-b4e e -6u+mukzd8xlzu*q.:c.pmis placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter xc+5tqg4 6jho stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jhg6+5jo4xt cq oining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an 7-aga 0dq/l dqr;r-gcd x = 0.20 m. What is the magnitude of the electric field qar g/l ;a7d0d rcg-q-at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0r0nxc k0t a5d1.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field atr a5 tkncx10d0 the center of the square.

  Consider a square which is 1.0 m on a side. Charges s2i/j v(m(+z rsh/omk.auyfk)rps: 4 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 square's ce.m akou4iys:f //pr2sr v)(m+j(szkhnter?

  A force of 10 N acts on a charge of 5.0 mC c93h amo78eyke m.t12uo0oc1fs: e g owhen it is placed in a uniform electric field. What is the magn8teoy7easo1c 3khm.fe o9:um0c12 o gitude of this electric field?

  A particle with a charge of 4.0 mC has6kfo:mc/ ogzw vp)iamj45s+5 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 in0e3rjny;cl,/ lq/etx an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be lj//t l ycqe03,;nrexsuspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball ist8jrab07:fzjv 9e; ()ihe y (lr* kgeo placed inside a uniform electric field, and is suspended against the force of gravity. gf:yht*oe( a k7 e9e0jz;l)r8bv jr(i What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a cha2o*+*nzcx0 a v3 o4vmikxm w9erge of +2.0 mC. What is the magnitude of the electric field 5 mwx*o m2xzve4a9+3nk0o*c iv.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge oejmqz+4dn(4 qf 3.0 mC. What is the electric field 6.0 cm from ed+4mj4q( nzq the center of the sphere?