State the law of conservation olzpp+l 37 j0 n7ruww4of electric charge.

  Is it possible for two negative charges ak 4q/al s blx(.os/5fto attract each other?

  Is it possible for a positive lg+kqai n:-7wsn2 g+mk ghu;; and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process93qdbw82b lbj g2taf* the glass rod acquires t*l bqbd2b jg2a389fw a positive charge and the silk

  A proton carries a

  The model of the atom shoj1vpetfo..x i-m- pp3j284naponx(u ws a

  A neutral atom always h+35pyanjs q nkj( v7g2as

  An atom has more electr:lvg0;r jrvj7ons than protons. The atom is

  Materials in which the electrgph-9 05zyjrzk 8 c:yu 9s7cryons are bound very tightly to the nuclei are referred to :cc sz8puyz97y -0g9r5 jykhr as

  Materials in which the electrons are bound very loosely *ekau rtpl41uys3 y7c a-6+bd to the nuclei and can move about freely within thes rca-d3+y e* pluku741yt6ab material are referred to as

  A negatively charged rod is brought near one end of an uncharged metalt1ie. a(br/ 3 b2qymyx bar. The end of the metal bar farthest from the cha/yir t2bq(1 y3b.mx earged rod will be charged

  Sphere A carries a net posit3 n9h )xjco5- ew1x+wd qyskk*ive charge, and sphere B is neutral. They are placed near each othqy ed xnk1kcj)w3o s-w +5h9x*er on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chjjs c1 *yzu- )+h:yymbu.jvn.arged rod charge an electroscope positively?

  An originally neutral electroscope is brie qy1-stfdbdk.s u a nmpkwx0 6,71d;8lfzb)(kfly touched with a positively charged glass rod. The el qdz tfyu1b0sd6( d-a78 wm,;.k1bnk sp)x fklectroscope

  An originally neutral electr)b0)cc(0fqfz9f d5lbk;v p sn oscope is grounded briefly while a positively charged glass rod is held near it. After the glass r0bvdf(clkb9nf5pf)z0 ; sq)c od is removed, the electroscope

  A positive object touches a neutral doz2oc;xiwsq96 a vh, 7)0 xlbelectroscope, and the leaves separate. Then a negative object is brought near the electroscop0bl6;q,vx92icxosdh)o7 z wa e, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. w r; h+cwx96oj6j4dk3nry y2f A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutk2;ycrjdy f 4wh9w n 6o+xrj63ral 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 Cou3 ;hbf 7/2bpmnhj)v cslomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger b.wi3/t9*so y so t f/8tlyz4sin magnitude than the second charge*tlzw tt sy s/oso/b3 i9fy.84.

  Sphere A carries a net charge and sphere B is neutral. They are plczo72 7iif-qb aced near each other on an insulfi-7 bqiz oc72ated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain ,if ( 4m8uegtaforce. If the charges on both o (afeu,imtg 84bjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive x) 9v;meg pfnqcmjf1546(bb*fu5w ey forces of F on each other. If the charges ujw )nv5q6b4 xgfmcm(fe*p; y1b5 9feare separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What ,ww p ppxoam wf:(24-ehappens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers w xpp 2wme(-,o:pf 4wais reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a dhctc l4m.sd(6istance of 1.0 m. What happens to the magnitude of the .h tlsc(d46mcforce on the proton if a second electron is placed next to the first electron?

  An electron and a prwrt o, i 55hhljsd3s9,oton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electrlhti3j5,od w9s ,rh5s on is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to -0kcd2t31kj yqcy/n u the size of the force on the proton if the electron ist/ j3 q02nkuyydc- ck1 moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a m6f*afyiy uab /d1v3p* p0cw1 l8xuzs).a* w vsquare. When a second point charge of -Q is placed at onec1*xa3w1uzl)ypadb0v am. 8*p f* si/yf uv6w 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 1fip h6 e 43zl g0npg(uy4*rffis placed at the centroid 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 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 14uflyh4rpff 6 *gen0g z(pi3 of the other vertices?

  Which of the following is z; pkd-x4 :qqknot a vector?

  At twice the distance from a point c5h56j g jiytj0n*n/ jnharge, the strength of the electric field

  Is it possible to have a zerm rtz/hev-34j,mv y(r o electric field value between a negative and positive charge along the line joining the two ch rv3 mhv4mr(e-z/ jyt,arges?

  Is it possible to have a zero electric fieldyi i-bi,4 +ugn value between two positive charges along the linyg 4- inibi,+ue joining the two charges?

  Electric field lines near psitivv+c0 *h zdq;bne point charges

  The electric field sh a(h j,hmf42uiown

  Can electric field lines id4 tjs8-uva*+hev k 2entersect in free space?

  A solid block of metal in electrosn7uq6snbj) 62f1c gugtatic equilibrium is placed in a uniform electric field. Give fg n7gcnub1j26 q6us )a statement concerning the electric field in the block's interior.

  If a solid metal spherexmu-pl2 e9c8 h and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the sm8h2xup9 l -ecurface is

  A cubic block of aluminum rests on a wooden table in a region where 2bhs;fe/hi3czyat+c q27 fw6a uniform electric field is directed straight upward. What can be said concerning the charge on the block's+c/a2h wbf3ft ehq2z7;cy s6i top surface?

  If a conductor is in electrostatic+i1eyfby*0ek:) hyk3wy uz b4 equilibrium near an electric charge

  A positive point charge is enclosed in a h;4lfs qs7fid jn w)a j0toz/ p6*4y9thollow metallic sphere that is grounded. As compared to the case so0t tajl;4wqyhi/9 d6)f nszf *jp74 without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties odo-e 25w)suon ce v1z;f conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i0)+neq zt pv5 m3.jhaj9pfoj97sqrg( s $e = -1.6 \times 10^{-19} \; C$. 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 manyhku,pyerp p75fpw .r5(4)x dk more protons than electrons,fk745pur(pxw d.h5kp) erp y does this piece of plastic have?

  What is the charge on 1 kg:t jjc3 nsch,ioe4uj45-0wj i of protons?

  An atomic nucleus has a chaiz 3 +ga;lqyd7rge 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 and -4 6 3xw2vzxw.w(hy cf9y.0 mC, re hwvw6wyxf( 9c2.zy3xspectively. What 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 tnx su;do sx*7-hem is 1.0 N. What is the magnitude of the ses;xo- xd7*s uncond charge?

  Two 1.0-C charges have a force between them of 1.0 N. 0nw95)luz 0 pg7 nvmweHow far apart are they?

  The force between a l,f/pm 05fz1;e) jmor vpjm n+$30 \; mC$ 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. If the0+vqdppsyp8, cyifcq8.; g c3y are moved to a new separation yp gfspyd+qvqic,.c 803;8pcof 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the 1z;qly rj8cr*x-axis. The first charge is crj8*l1zq;yr 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 which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.4o vory6s8,ih 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 electrostat,yois vohr486 ic force which acts on the charge at the origin?

  Three point charges are located at the folak4usy/ js x85lowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.0s8 xsu a5j4/yk0 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 tn:o +hc0mxx:uze o 7b7 -0uvklhe center of a square, and a second point charge of -Q is placehe -7umv 7:xzuobxn+ ocl0:0kd 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0 h131q8augla y); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC gu1h 831aqlya charge?

  Q1 = 6.0 nC is at (0.30 m,b 7fqz - 0u.wprxn1:pu 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 the 5.0 1qw 0.7xp- bn:upzru fnC charge?

  Three identical charges of 3.0 mC are placed at the vertices of g5ojdfjo* 107xd)s5 hwao x*c an equilateral triangle which measures 30 cm on a side. What is the magnitude of t) ohxo* g* a5jd wcf01x7s5dojhe electrostatic force which acts on any one of the charges?

  Consider point charges5b+x)4fb w; pao8i ;ahx)uqo o of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between4oaxiwp+foa); u5xq8 );h obb the two charges, would 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 chargp 2rg/yz /r1 rdvg/rp+e is at x = 4.0 m. Where on the x-axis can a third charge2rvdrzpr//1+p g/ ygr be placed so the net force on it is zero?

  Charge +2q is placed at the origin :*2*.mdkigjf 7 yt7 xvslk.wpand charge -q is placed at x = 2a. Where can a 2 vkl7tp* wx7:.fkysi. dgjm *third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. 5ku-5g7 nzs on 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 attractsi k*ihv-tp z1.g(aa+ion of a fixed proton some distance above it. How far a .*hv s-pgt(1iia +zakbove the electron is the proton?

  Two 0.20-g metal spheres are hung from z m,ule1b:psiq,;8 s*zls yn,rwl ,j1 a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electross1,,ezs1,z p,unlj y :wmr 8s *;bliqltatic 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 m7g19shu b, bzsy7cni9 agnitude of the electric field at a distance of 1.0 m from the nucleus?7i,ssyb1ng7z u 9b 9hc

  What are the magnitude and direction of the electric fiel5uf ixoxgbx-g wo+,0ar( 3f517olx cr d at a distance of 1.50 m from a 50.0-nC o3igla5u gox5fw f7x,xr1o -0crb+ (x charge?

  A 5.0-C charge is 10 m frxxwl, /m .2wfdom a small test charge. What is the magnitude of the electric field at the location of the test chargefx /,x2w.w lmd?

  A 5.0-C charge is 10 m from a small tgy..rh.glvn90mm y,u est charge. What is the direction of the electric fieldl uy. vmg 0,r.h.ygnm9?

  A 5.0-C charge is 10 m from a small test charge. r0, f6 s,gs,xnp7agx3u7fywi5l t fa2What is the magnitude of the force experienced by a 1.0 nC charge placed at the locf3w0srxnsg f,aitp,x5 yg7fau 7 2,l6ation of the test charge?

  Two point charges each have a value of 3.0 C h:m)gfn(gcs i4m5 /qsy x,3mdand are separated by a distance of 4.0 m. What is the electric field at a point midway between the tssmf(g: m ,4mqh35 d )yncix/gwo charges?

  A 5.0-mC charge is placed at the 0 cm ms u (u*dfrx*2wh;q ;tktfx27jark of a meter stick and a -4.0 mC charge is place2t27x*(;rxkfq h;uf* sj uwt dd 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 i27 gfyatp((qb+w7an qu)cmh0yst fp5 8r(1imark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges hif q r7)bq 8tc(tny0wi2smypg7f 51apua( +(is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x adg )) fo:,xaz= 0.20 m. What is the a)xo)zg ,:afd magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the thrthg (lf7+ jajco* 8az*ee corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fifhzca7+ ot8*l*(jg jaeld at the center of the square.

  Consider a square which is 1.0 m o wccphz3y 7q hkqxc,2 sj9:q4,n 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); xq ,ycj2k 3h qc9z pcw7h4q,s: -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 of 5.0 mC when it is placed in a uni/lqpdkyh.l5+tn/lz :3d aj: kform electric field. What is the mag:pq3 lkj / n lty.+/5lhzdkd:anitude of this electric field?

  A particle with a cha m ;7y0lj g j7vqgog7:sm)j(agrge of 4.0 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 f,;prn;.oa 61jupkwz6j r;p ag is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on therzp wa;u;p no66;j,1jk .praf ball for it to be suspended?

  A foam ball of mass 0.150 g carries a c k.9qb7xyg*is harge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended a*.s97ybxqki ggainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius,6 c.tdbyouod/f z20s 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'szd0 coyd2b.o t,fu/ 6s surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is tht-nq1p -9aigo6go2si e electric field 6.0 cm from the center of the sphere-qpagis-ooi nt629 1g?