State the law of conservatiofa 2lp/ z6r s,yht:/sg k(llfj 9uspy9 im+p3.n of electric charge.

  Is it possible for two(wo,c nwfdsro7;iz2b /tln3) negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eachla48c2 wehby qn,58x cae6 m+y other?

  A glass rod is rubbed with a piece 5 n8z3cn8gaxwkj7plonq m,l6),y.wb of silk. During the process the glass rod acquires a posixy83wp,wn6 .zn7oq m,58jalklcb) ngtive charge and the silk

  A proton carries a

  The model of the atom s -+8p cayf vdmgbno1)/hows a

  A neutral atom always hrhq1dv:q9 ( snas

  An atom has more electrons than protons. Thjmd xib1lq7(: e atom is

  Materials in which the electrons are bound very tightly to the nuclei ar aunma7 il:kll ajt661ohqze7 p:0c5 ;e referred to a0a 7apm5k ou6 :ajlt1;ze6ic7l qhln:s

  Materials in which the electrons are bound vek x67 r 38a(st omul:ndet28u-l fj2ltry loosely to the nuclei and can move about freely within the matel3ltkl meu 6(-jtad8 otf2 8n :rux72srial are referred to as

  A negatively charged rod is brought near one end of an uncharged metaqq t(q sw3hz;n.) qz(gl bar. The end of sz;(ghqzq.q3twn) q ( the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B isq4h)q*a jol)ek+wru yj 0m0q / neutral. They are placed near each other on an insulated table. Sphere B is briefly4k/lry) *e+wq)ojamqj00 uq h touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electens2ws y2-dn8 bu 2hd7xnhk*6roscope positively?

  An originally neutral electrosco8-e 5z7r)lvs.b 0oqya ;ybc oxpe is briefly touched with a positively charged glass rod. The );70vlq8 cyyebro. zo5sbx- a electroscope

  An originally neutral electroscope is ehxsn+ wgk2.;grounded briefly while a positively charged glass rod is held near it. After the glass rod is rw2ehx ;nsg .+kemoved, the electroscope

  A positive object touches a neutral electroscope, al9+9qik1fdv 4u/uf iw nd the leaves separate. Then a negative object is brought near the electroscqilv 99/4+ 1fwuduik fope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral me u-od( u+05vkvbbr km1tallic ball rolls straight toward the object, but stops before (1b5 dom-bkruv0vk+u 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 constc 6qz;*z9bwd tant $k$, which appears in Coulomb's law?

  Two charged objects are separated9jk6 5b;zao +go+ktff by a distance d. The first charge is larger in magno 5fg t;akjzkfb++6o9itude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near 9 r8hk;qp p*ats 8mwn/ky) -t*+josogeach other on an insulated table. Which statement best describes the electrostatica;w -jk st/n stq98p*)+yopgk r*m h8o force between them?

  Two charged objects attract each other with a certas;mtu3(lpjr- g1oy k6in force. If the charges on both objects are doubled with no change in separation, the fo1k(t; 6ymo3r p -lgusjrce between them

  Two charges are separated by a distance d and exert mutual(yg1m75za)jtbyr s4p attractive forces of F on each other. If the charges are separated by a distance oyr(7 1g45ampzy sbj)t f d/3, what are the new mutual forces?

  Two charged objects attract each other wibb1bv pe:1y;3u gnjq+th a force F. What happens to the force between+1 gyb1vu; eb:bjqp n3 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 force is now equal to

  An electron and a proton4 gl+ nb:h-y8b 4inas2;lm m9djl, drk are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second elect;ld:la8l4n imj+ h 2-b,yr4sk9dbgn mron is placed next to the first electron?

  An electron and a proton are 7 c yd30ovw3psseparated 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 next0cd v op73yw3s to the proton?

  An electron and a proton are separated by a distance8pyztlecjs3)qw p , 4+ of 1.0 m. What happens to the t+ljzp ,y8e3sq)c p4wsize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of:-1- r,xy cvwtgp .gx5rwmp8p a square. When a second point charge of -Q.p-prxpgmrc8gyw,x v : 5w1-t 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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the u:91lhzcb )p(a6p2q: utnxzs centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic fzxlt:hzbs6p : 9)unu2p cq1( aorce 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 p(66c .e,ss :y+ie :p8zvhmrf-nkbka is not a vector?

  At twice the distance from a point cls +1kszs)h9uzva.h(xs 3r, qharge, the strength of the electric field

  Is it possible to have a zero electric field value betredvl 50ce woue+vypr)6l3k6.t i9q+ ween a negative and positive charge along the line joining the two char ) v6r +e +pll0.9o5ecrtevkw3uyiq6d ges?

  Is it possible to have wq:5yv -b ss)dcqz0i8a zero electric field value between two positive charges alos)v:-z 8sdw q0q5ciy bng the line joining the two charges?

  Electric field lines near psitive pointmoyk)y,:6g irzv 8l r ltz, 80,*agxbl charges

  The electric field showf-izut 6+5yljo/+d cpn

  Can electric field lines intersegs.dwsvy bs0*pq +:i 9ct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elect s6f e-wfu-n9sric field. Give a statement concerning the electric field in the block's wnsuse 6f-f-9 interior.

  If a solid metal spherlft8g1: 5 :leypyov: ge and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center a ty o:58pfvgyll:eg:1nd the surface is

  A cubic block of aluminum rests on 0ili d1teue ,q(cr2 gvpe0/ qr9hn,lg 4 vj*;ha wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the chargepr/0c digt,r 42;(n*, uhelq 9v h1ije0qgevl on the block's top surface?

  If a conductor is in electrostatic equilibrja(x*eikp8 ;c/pe +ny ium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere m jkt/fk8-ox 7yd4(wr1o.phdv*0ng i that is grounded. As compared to the case without the hollow sphere, the electric field atxrhkk .nf8d74ogm/io*1( py0tw j-vd a point directly above the hollow sphere has

State three properties of conductvbw b (yz1hr 378opq2wpw q+;oors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is k3rp1e7i -v iy$e = -1.6 \times 10^{-19} \; C$. 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. y2 seo1t rz:c,How many more protons than electrons does thr c,e:2y zsto1is piece of plastic have?

  What is the charge on 1 kg ow xvlg cewq1yb //;x .8z/me-zf protons?

  An atomic nucleus has a charge j8+-nmndeactebm09ty 14 cg0qs i )y* 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,rm;4y(s p12wb,/k /edy ngki w have charge values of 2.0 and -4.0 mC, respectively. e;gyb/,ikw 1yk 4n2mr(/ spdwWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1)tuy* qo03so hh+5lr)uh8ezv.0 N. What is the magn5 eh)osy+tq3 u)l0*zo vhurh8itude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart 6 0f4zg pdnc;,p0uewn are they?

  The force between a a7( ejb zaf3c0n,elna.-h 8 :lafeml3$30 \; mC$ 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 7wsg92f jnp+xtai q u/*nc) i.force. If they are moved to a new separation gpxqn9 ntaif icsuj/ *7.w2+)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. The first chg9cxhp5p-( jo c;o zd4l8cgf+arge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm ma zc;ghl8c9cf(dx-oj 4o+5g pprk. 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 charge of +2.0 mC is placed:gc x)4-3oisbipa9oc ,, nnad 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 electroina,3o,4pcoi n b)-ag:c x9sd static force which acts on the charge at the origin?

  Three point charges are located at the following 0heff,29ea)spz: j unt 1lzz (positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00j ns,et01 fe:9uzz2 h la)f(zp 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 s oc:*)uq i8skigg1d tqiyx2( 2quare, 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 magnitudgy( g)*od28sqq1kit ci2 ix :ue 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 iygmvqm8 -w0.m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC8i.m v0qmgy w- charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1rf/zy 2v udpk6s(4nos0d* iam0i(( aeu)nvl (0 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force (2/4iui(ymdsfz*a k0daup() nno s6r(v vle 0on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an ebdh bj c p.x99+kr .)mk;wp e.xk;g*dmquilateral triangle wxkk ;kpmb9. )em.bjwc 9; g+h.x*d pdrhich measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of9 rsuf kryuih .bocx5 55*h9) 0uuwhm4 +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic f0o rif xw5yu5huu) hsrkmb4u9 c h.9*5orce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at g*ws/aq3;(i fx kgi+e x = 4.0 m. Where on the x-axis can a third charge be placed sosi w(g3;aq*/giekfx + the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pe5oakt:5r l7*t +5z fck nl,jslaced at x = 2a. Where can a third positive charge +q be placed so that the force o o5ratet55z fskj l,:k7*c+ lnn it is zero?

  A copper penny has a mass n+i;ge gfx*9jm7rq t/ 4.w atwof 3.0 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 force of gravity by the attraction of a .wz vrs(dnqpu z9j bc2-g/h90pe (n rb5qz(:xfixed pro (vh 9upqnsezr x5r0gn(d9bz-w2 zj(q pcb:./ton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung frmz pjjcu( e9 3s3a83eeom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until ece3z a3u38(9pjsmj e 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 :h vfzc9bjnf/ tz2x0;the electric field at a distance of 1.0 m frjv b2/9z0t fhfxc z:n;om the nucleus?

  What are the magnitude and direction of the electe0x yv54q*xv*1x-je( jwwbby ric field at a distance of 1.50 m from a 50.yxjb*xv5 eey(*bqw-wv j41 x0 0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud1d c-hioj(5vor a h4.ke of the electrir 1oivh.kj(ao-c 4d 5hc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small tllt.h4,d wk wx-j100 bxtl2pxest charge. What is the direction of the electric ft xp lk2lwx wht4,xbjdl-1.00ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudeh-bcz0m5 (w( br4nf ki of the force experienced by a 1. 5h( 0b(-4wzkrcibmnf0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 iquba6vk/x dv pp--i1rm-)r *C and are separated by a distance of 4.0 m. What is the electric field at a point midwp) -d /-rp-i*61bivr kmaxuvqay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cr/jrrq; h0ai- harge is placed at the0 r/ra;- hijrq 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 stick and a -4.0 mC csxv*v)4b9ll * 14 mmqam4wbyxharge *l 441mlvaxxm)qb* wmbv s 94yis placed at the 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 and -7.0 mC are placed at x = 0 and x = 0.20 m. dyj-d +nvx(k,(roi;ct9+:/b vg i bwp What is the magnitude of the electric field at the point midwaiddg:bcy b(t;x 9+wvv - (n,/okpj+r iy between them?

  Three 3.0 mC charges are at the three cornerf7w+i 7mkpc( is of a square of side 0.50 m. The last corcpwii+f7mk(7 ner 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 place3s y*6qo42 k w5tlv5,2 iyfwuoffuqs:d at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC 2 55f o 4wyfiou*yq3,v 2qfssltk :w6uat (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 charge ofpw :m9/iz3 xvw 5.0 mC when it is placed in a uniform electric fxmi3z w 9/w:vpield. What is the magnitude of this electric field?

  A particle with a charge of 4lsg,nw9cex vw-a7sdtb:7))v.0 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 plac +9h2 2p oi)dtq3jvgzned in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?9 di +gjzot3 hp2v)nq2

  A foam ball of mass 0.15e uty*ovq08, ur)6zzl0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fiq*6, zy t 0lou)evurz8eld?

  A metal sphere of radius 10 cm carries a charg9, 7fw3vqt aqqlpoh;daap9*wtg 65s(e of +2.0 mC. What is the magnitude of the electric field 5.0 cm from (a3q;gotqdw796 p p wafas,hv* lt 9q5the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 my*1ele.p(fs q0d2gg9y d pu9vC. What is the electric field 6.0 cm from th9u9v2dy.psy ( l*pqdg eeg1 0fe center of the sphere?