State the law of conservation of )dvo,qx/(ye-7qc ga,;ormsx electric charge.

  Is it possible for two negative charges t 0cagl ymk my*3xnvc /.x;)s3lo attract each other?

  Is it possible for a positive and a k+y-hscp0 t s +rlr.*lnegative charge to attract each other?

  A glass rod is rubbed u+mvatd8vx) ivs ++ :i9hxz e,with a piece of silk. During the process the glass rod acquires a pie ) s: hvt8,d++avx xiu+9mvzositive charge and the silk

  A proton carries a

  The model of the atom s xj+m g jka(ywzf6y9q lyj;9,ky/+id7hows a

  A neutral atom alway t6am3-)avmn uk i3sovvf21xfy-.r5 zs has

  An atom has more electrons than protons.eye63 h av; iek2cg9ape,9h.b The atom is

  Materials in which the electrons are bound very tightly to the nucn x14tmo7gzi7lei are referred i4 ztmx1 7o7gnto as

  Materials in which the electrons are bound very loosely to the nuclei aehni3oi 3x85znd can move about freely within the e83 xin5hz3o imaterial are referred to as

  A negatively charged rod is brou9gqf5k:ez0oy ght near one end of an uncharged metal bar. The end of the metal bar farthest from the charged0zk5yg qfe:9o rod will be charged

  Sphere A carries a net positive charge, and sphere Bx/ v0ylm c a6mji/d(9mqu*l uuy*vw*/ is neutral. They are placed near eam/ ui u/mycj6 a/x llm0y*9*vw*vuqd(ch other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positiv,o(7v e nzn9;fbb2 wyjw) yqc9ely?

  An originally neutral electroscope is briefly touched with a positively cb /qbhta (/9ggharged glass rod. The electrob t/b(ghaq/ g9scope

  An originally neutral electroscope is grounded briefly while a positively chavqcu5r9j ;ru-q+r0 i q6gm+42kbs cbdrged glass rod is held n;v4r 2ck 5jisuqb+rbd+9 qrcq 6m 0u-gear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral gn;;kb qe q6u3:gwlx4 electroscope, and the leaves separate. Then a negative object is brought nq :kx 4ug;l;nwqb63 egear the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated taxa qycgto u36(;te2j- ble. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path foll(x ;t2o-g j q6ytceua3owed 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 consti s) -b9mns s2luyc4g(ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larb8 .5kp+ xvfdz 0hxq:mger in magnitude than the secondx8 f5qzmkx db: p0.+hv charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea( 8qnag4o:w wdd 2po/ur each other on an insulated table. Which statement best desco84qw (:dndg ow au2p/ribes the electrostatic force between them?

  Two charged objects attra(5s ba cq.zv t7ehceroemzs1i;8+)x 9ct each other with a certain force. If the charges on both objects are doubled with no chang;szt7 ehi axe(m sqoz rv5+18b)ce9c.e in separation, the force between them

  Two charges are separated by a distance d and exert mutual attgaabh ;n6 n z 9d)r:kozf(9i2gractive forces of F on each other. If the charges are separated by a distance of d/3, what are t9n(6id fraa) gz:o2;gb9zk nhhe new mutual forces?

  Two charged objects attract each ot/xaxsg v5v2)( p kqz.x i(w7laher 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 forcezp( xw2xv(qg)xlaisa.v 7/ 5k is now equal to

  An electron and a proton are separated by a distance eo)y c-x;1yl0l q i/waof 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next aw1y;c/q)ox0e l- yl ito the first electron?

  An electron and a prokf vx7 aq(j. scd6th n- wd9nk.(t,m;hton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elemh-j t.wnk.fa; n(x7tq scv6d(,d9h kctron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens toj -o/bs6ld u:.u r.kjd the size of the force on the proton if the electron is moju:6rkuj-.o db s d/.lved 0.50 m closer to the proton?

  A point charge of +Q is pl5v/4g uu8do3uqndw + d,z9dbraced 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 dvu wn uz9go3,qd5u db84+d/rcenter. 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 centrokb v-teux5f: i1.h6-fu .wa3ylam z 3nid 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 u fky3wib3 h .l5.-a- vt:mfe 1na6zuxacts 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 n *a bijbfw1oo+vaij)8;6iinh/ ) mq *aot a vector?

  At twice the distance from a point charge, the strength o uy/+ pzqeg0a*u wu81lf the electric field

  Is it possible to have a zero electric field value 5345km +7ywo6ns ab5uxx q97s vov rh)klc*lw between a negative and positive charge along the line w7 49om 5nluo 7h k5vs xbs*arvl wk3+56xq)cyjoining the two charges?

  Is it possible to have a zero electric field valueld0 vo9ar o+6j between two positive charges along th vl69rj+a0do oe line joining the two charges?

  Electric field lines near psitive point chargen-xc,kpvj/ ,ys

  The electric field shownw-i gns cruqt0t+b.vqj- 5a:)

  Can electric field lines intersecfy3ii ;vs ;eke5ql7 2rt in free space?

  A solid block of metal i8mojyebcaua/*7/ 5g5:y lvi j n electrostatic equilibrium is placed in a uniform electric field. Give a stvy 7uj/8jyemca/5galoi5 *b:atement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphe dxyhk tdle 23h+ic 6-rch09m5re of equal diameters are each given the same charge, the electric field (E) midway between the center0 r 5xce6 hy3ki-hddt92c l+mh and the surface is

  A cubic block of aluminum rests on a wooden table in a region wh avlq4lyply.w:3 y d-/q.wa 9here a uniform electric field is directed straight upward. What can be said cly4 q/lh: y ap. wvqly93-aw.doncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecnh 6o rjev ,2v vghwqg8-3f28stric charge

  A positive point charge is enclosed in a holl(-+ga,:jd-hxia xro i ow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point (r:xhj+i -o xg,daia-directly above the hollow sphere has

State three propertieh/ bj6m,z9a2sg( mtwks of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electronf;y8t5w-f2hfi jbmk 2 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 protons than elx3yhn1lu zdm up7eq;l zhda gi1eh8:-,)1qi.ectrons does this piece of plastdxl1;a8.: -uzz1ed3 l eigqh7)uh,nh mipy 1qic have?

  What is the charge on 1 kg of protoebdfxn+: :o ;p- 8ahrons?

  An atomic nucleus has a charge- fbasz e+8u2b1t4tf n 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 values of 2.0 rr.yec.j6fn60 c0k ouand -4.0 mC, respectively. What is therkjucre0 o.yn.f 606c magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and5fh mifc d/4a n s*vxta*3p,)u the force between them is 1.0 N. 3avm*h cfpsi* f4)xat,d/5 un What is the magnitude of the second charge?

  Two 1.0-C charges have a force between th2 d: 9s,3y5j3 otu/ tpttneyrsem of 1.0 N. How far apart are they?

  The force between a d/n hsw;lq9,jwjk 9 l1$30 \; mC$ 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. Ifz-/vnik yx/q. they are moved to a new separation of 8.0 cm, what is the electric force between them?k. i /y-/qxznv

  Three identical poinn-.9xtqwk1m ze 7c9vv (c*dswt charges of 2.0 mC are placed on 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 mkwwevq m19(9-v 7tcc xs nd*z.agnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on thesc:he 1a,4m4s2o od rg 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 oosde4a o 4s2hr g:c,1mrigin?

  Three point charges are located at the fol1qsz3t1b+kyz. ek z 1plowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0;.t 13qbk1e s zk1+zpzy 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.rb(i)wg/u+ zkgt y6b 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 third charge of -Q is plg+ /wbrzyu) t6.gk (biaced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1 g9j3x5epq u(c8 yy:nu0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thec:jn (5uu p3ge8 yqx9y net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (02c.5ab- g 3oxj/ftwov.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on th c-v/2 o5w.ojxta3 bfge 5.0 nC charge?

  Three identical charges of 3.0 mC are plm5:1t gys b/jeaced at the vertices of an equilateral triangle which meambs1 e/t g:jy5sures 30 cm on a 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. At what poiw*b6wc,zy r3n52eb)rrq v 0jrnt, on a line between the two charges, would it be possible to place a charge of -Q such that theyr,cbj53b qwwz r* )02n re6rv 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 xw9 kpnt6.)afk ldb,f * = 4.0 m. Where on the x-a ta,nk9fkd6p*lfb w.)xis 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. Wherelcdy 2dv+ i9pv . r(wybt/+wx z:lc:q; can a third positive charge +q be placed so that the:wldi+vbp;yr(/ycw2xzv:q l.9 c+t d force on it is zero?

  A copper penny has a mass of 3.0 gj* xg91bz-p bb/k r e.izr8gxzed7) .r. 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 agai6h+ty)j1ch rs 7.mnmo pp3p t,l81kwenst the force of gravity by the attraction of a fixed proton some distance above it.+y1p7s nphmt. o, 3t8e)16 mkcwhj rlp How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a dnsth2*/f2pv ue +,ebcommon point by nonconducting threads which are 30 cm long. dvf*p2heu/b t+, esn2 Both are given identical charges, and the 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 of0.ba ajc ,q,is +40e. What is the magnitude of the electric field at a distance of 1.0 m fr.i, js0bc,aq aom the nucleus?

  What are the magnitude an(n v36qp,4f hwp4sq.s pmz7 hwd direction of the electric field at a distance of 1.50 mp h4f,w.3m6 np p4vq(h7z sqws from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude.ov ey -tnl g749;upev of the electric field at the location of te tely vpn7v.u9g- o4;he test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the )pa u(f6etivo1d7p*vdirection of the electric field? d*7v( vf paop1ei6)tu

  A 5.0-C charge is 10 m fromwk+a3ietv k+nda( um,98lz t80k z*oxan* j+y a small test charge. What is the magnitude of the force experie+(8wzaa0kl n*+iu kxjezk+9, 8*vtdm yn3ot anced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by au+yja;et b*rug:) p2a distance of 4.0 m. What is the electric field at a point midway betw a)j;u: agbr *uyt+2epeen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mClh o .*20vqbwu charge is placed at the 50 cm mark. What is the electric field at the 30.w*0 bulh v2oq cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cha by+hh2 (0:qfg7;mt5mcqknfc rge is placed at tyhc qfm(+tq72 n;0f5k gch: bmhe 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC awl /olf;x8. hjnd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fiol;8h jf/w lx.eld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of s hz ):gvi2tl 1x*rdg,oide 0.50 m. The last corndtx2ghz i:g* r)o, l1ver 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 m5sasmum:.u4 .fos0 o w on a side. Charges 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); 4.ua5smum0sfos :.w o -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 cha0bu pou*t75xffb c :4arge of 5.0 mC when it is placed in a uniform electric fiel tu*f:p7 xca5fo0u bb4d. What is the magnitude of this electric field?

  A particle with a charge of 4.0 r u +m cecalz63d+yf+/le;5pr 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 mass8qv,(ozy.-:-p // cv-in oyu unsnc ln 0.120 g is placed in an electric field of 6000 N/C pointing downward. What chan-/qyy .l/8o-s,: pznco inncv-(u uvrge 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 ball issx3 -acdl0k m6 placed inside a uniform electric field, and is suspended agam l6 3-0kxcdsainst 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. What is the magn+/cwmd6 tx (btdfn y57itude of the electric field 5.0 cm from the spwntyd5+ dx/b f 6mc7t(here's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. s - l3mt)tt,eyWhat is the electric field 6.0 cm fromtty tl-, em3s) the center of the sphere?