State the law of conservatiawv)vmz6a q0 nghez 65:xn(. ion of electric charge.

  Is it possible for two negative charges to a: fjuf 0;sieb33gudv 8ttract each other?

  Is it possible for a positive and a negative charge to atzi2 f*-i4uuz(pivd0e28r cygtract each other?

  A glass rod is rubbed with a piece of s8rcc66by0 wwwxf. 4e z7*qkknilk. During the process the glass rod acquires a positive charge* 8.0y6 nrzwccek qbwwxf47 6k and the silk

  A proton carries a

  The model of the atom shows v9 x94urq(ynmar9.xx a

  A neutral atom always hass 25zrb160e09qofvzlll yv2m9aa ,d l

  An atom has more electrons than protons. Th*hxl ql sx/7r-e atom is

  Materials in which the electro9ks5-- 8ycgp qlxqp-gns are bound very tightly to the nuclei are referred to sygpc qq 5k-lg-8-px9 as

  Materials in which the electrons arbnwv1)vsrs;3vk -b5(d tdx a; ;qobw. e bound very loosely to the nuclei and can move abv;)3;(s;t nvvba- sk b r dwoq.bd5wx1out freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged 5dee8avi78u4i obe2 1b d vw*kmetal bar. The end of the metal bar farthebeu8o5vkv 4addeeii*w2b 7 1 8st from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pd -c.o.2e 1r shicl*sa;gni 90eje1bi laced near each other ol1d1h20; *iaiejcr.g9e.-bs ce inos n 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 positivecjrss) d.xfw /;gwm,w,;c)g z ly?

  An originally neutral electroscope is briefly touche. - )yy2v,vc ir;qd*kl v90w;h.qlpugt9n rpjd with a positively charged glass rod. The el9p.vrvcq d)hpt .jl9quywv0; rkn;,*gi yl-2ectroscope

  An originally neutral electroscope is grgai44 tbp(v h*ounded briefly while a positively charged glass rod is held near it. p*a(4i4v b thg After the glass rod is removed, the electroscope

  A positive object touches a neutral etexxlu;hj (u/8 b**rv;+lkr y lectroscope, and the leaves separate. Thenux*r+tu 8 ;je b *k(rhxyv/;ll a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insun hazqi;(32 s ytn,oypr,p*9alated table. A neutral metallic ball rolls straight toward the object, but stops before 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 forwarnyp( 23,*y9;t srno hizqapa,d, 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 cons l vbta2ds5dkud. ;(t;eh4.kmpx x6 :ltant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T5 1dxb bpc6 dqar+g/j1he first charge is larger in magnitude thagcp d16 b/1ad qx5rbj+n the second charge.

  Sphere A carries a net c5hi9fjrp hf sn x3:.*lharge and sphere B is neutral. They are placed near each other on an insulated table. Which str :h9f x.3lihf*sn5pjatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain for (iqi2qgk.l1k6km t+56pcdroce. If the charges on both objects are doubled with no change in separat5mkgo2kc r1pqtki d +6(i.q6l ion, the force between them

  Two charges are separated by a distance d and exert mutual at tf)n m2ogw90v. pqo3x(bxci 6tractive forces of F on each other. If the charges are separated by a distance of d/3, what are c.0 xqigb2wn v3to(mo)fp x69the new mutual forces?

  Two charged objects attract *ublp c9-qy0 meach 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? Th9ulq0c-pb *y me force is now equal to

  An electron and a proton are sb/prx 12sngv8 yhq1 n4d9pflucg, f/, eparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elect nlg1 v,8hgdcs/9b px,pyf1/ u4n2rf qron?

  An electron and a proton are separated by a distance of 1.0 m. Wh vby4lj(n r3o9at happens to the magnitude of the force on the first electron if a se3 yjlonbv49r( cond electron is placed next to the proton?

  An electron and a proton are sepnpl5l4hi5 x( erqy7lo 3y50 drarated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is 43ehy 0dl5 ryxq55 op(7ilr nlmoved 0.50 m closer to the proton?

  A point charge of +Q-24wlljndkm9 0igy 7 a is placed 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 other three corners of the square. What is the magnitude of the ne kl9-4 nadj0lm2iw7gyt 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 equilatera,u cu.jb8t0bz3 * fvzgl triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostacv b*uuzj. f83,b 0tzgtic 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 is not a veeua+c dw6g 6v 9ym 4(i.kxsqr, :vw5dcctor?

  At twice the distance from a point chap068izspptr; rge, the strength of the electric field

  Is it possible to have a zero electric fiep5oi::a u55-e f0s6n c rehupvc2 (tzild value between a negative and positive charge along the line joining - z:ra n:6(v5pi5c s 2pc5ueo0hetfui the two charges?

  Is it possible to have a zero electric field value between two positive ch3l; er9mjudx6 w)u6ri arges along the line joining6d)reu 6lui3w 9mr;xj the two charges?

  Electric field lines near psitive point ch2o8j0r1 zi.un wn irh*arges

  The electric field sho/5hxy/ xg*cr mwn

  Can electric field lofn 37-ys-4wc hmla2 mines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifor6p+6(+d c gqh rms*ot ey0s(yhm electric field. Give a statement concerning the 6ehhq+p (oy(0srgcts dy *+6m electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equsl - gozmluw 0r :tm(kdc;h18*al diameters are each given the same charge, the electric field (E) midway betwl*old c01z ktwh:m rmsg(8;-ueen the center and the surface is

  A cubic block of aluminum rests o ( l..6ztkiblln a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on thel.btk( lz.il6 block's top surface?

  If a conductor is in electrostatic equilibrium near an1ur-4h r slhvg.i)s:x electric charge

  A positive point charge is enclosed lg)c;k n t,x3qin a hollow metallic sphere that is grounded. As compared tlxkcg3 q;,t )no the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductsiyus q2- , ic3*iwp,wors in static equilibrium.

State Gauss's law.

  The charge carried by one electronwhu bs+y,u60c 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. Hox pdngwrk9 ,+u ,md.7-.rbl zlw many more protons than electrons does thb-dxd plw, n+gm7 ,.zr.ur9lkis piece of plastic have?

  What is the charge on 1 kg of protonsab8hb8pz v3ghy 28cj)?

  An atomic nucleus haqaoqn7l9n q(7s a charge 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 g ln50q7hqki(hxw8o*;pj ai2yj0,c i charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between thljwn5 ip;,(yhjghikix *c qa02 78qo0em?

  A 1.0-C charge is 15 m from a second chahk+0x d:ax1mhsvd3d. * cc1k.uy f7lvrge, and the force between them is 1.0 N. What is th s31x*uck07vv+x.yhdk d:1. d mflac he magnitude of the second charge?

  Two 1.0-C charges have a forckzf7bv) a-:mk/ml (s k rrdl27e between them of 1.0 N. How far apart are they?

  The force between a j + 5/ bk 9q-yzimfcii/ uwfdil(/ ona4y0/,wt$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm alqw4eq-js24 eb(vj*k- ) *.jxtrnf bdpart, experience a 1.0-N force. If they are moved to a new separation of l)*bf.j4sq 4jd(jt-re *eq n- vk2wxb8.0 cm, what is the electric force between them?

  Three identical point chari/jdd8ow aedxz)m.0 5ges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at8wdmza/0x)d5d .je i o 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 +2.0 mC is place7tjrexkbk- : ;xhg, a:d at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 10jak;,: tkex:-x r7hg b0 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = uixj+uv,bzx wmt 0+x6 t8haf.u7+e -d1.00 m; Q2 = 3.00 mC at x = 0; Q3 = . a7-fx ,8jvh+tmiu++t0xzbd wx uue6-5.00 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 se g0+6c+g3:ogbn wjihhcond 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 +h6ji h3o n0cw:bggg+ 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 tpm2rsbw)c08xj3b r 35n7u idat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the ma0 c3 s2b x 3t7mj5r)dbrw8unpignitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (m z39d)uto )oab+:upg0, 0.10 m); Q3 = 5.0 nC is at):o) t+zupo mau39bgd (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqnvz5y2tc(ion-.c 3y4fm -qg/r8i 9 syr so) lauilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic.s2o s )59ryym 3z y-(tg ivrioa 4/lq8fncn-c force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Apw+ c6k9hg7 la nckk9o(u9jj4nt*5 nft what pointcj9 k7ljkgo9uk n( nw546nt fh9*pc+a, on a line between 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 qd7zz1 ( plra;a +9.0-C charge is at x = 4.0 m. Where on az ;1rpzd(7 qlthe x-axis 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 plzg w;+;f4an+et r.j z( dnmi6gaced at x = 2a. Where can a third positive charge +q be placed so that the ;d ir.fz g+wgz anj(e; 6mt+4nforce on it is zero?

  A copper penny has a mass of 3.0 g. A total odf* su3(sarlab8 9 f3kf $4.0 \times 10^{12} \; electrons$ 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 forgpf3) nc();c qjne s/p t ng*0cwm:l.cce of gravity by the attraction of a fixed proton some distance above it. How far above the electro: c*0 ncm3e;s /)g.ctgwpqpf n(jl)nc n is the proton?

  Two 0.20-g metal spheres are hunipo,f.+5oqx4h y s0mrun1:yig from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angs: y,0 o iix.fy5 qrnupm4+oh1le 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 the3qxprj:y6t(ea+ ui/w electric field at a distance of 1.0 m qt:p aue6ixy3+r (/ jwfrom the nucleus?

  What are the magnitude and direction of the electric field at a dis-5izl1 aeww8u q m5r bvbh+o..tance of 1.50u.85bl e+wv oaqi-zwb .h1mr5 m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e9nx:2dxf khf ytbs fa,f/1, ;rlectric field at,xxdt2shan:yb/, 1f fkff r;9 the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge 9ukum 8jowc7hs86i/ w. What is the direction of the electric fiem8/wcu6kws h987ujo ild?

  A 5.0-C charge is 10 m from a small test charge. What is the magnih: e.q5bbez.o ;jota)tude of the force ee5 j)h: oazebot.;.b qxperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value q1a8sr) i9dkhof 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway b)d8hk qias9 1retween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a 6s1j25as17 x x nh0mwzwub -ku-4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?u 2x1510 6sw a bnzs7mujhx-kw

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick. .-mmj7je cib and a -4.0 mC charge is placed at the 50 cm j m.j-7icbm.e 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 t3rt.eb/ t 1syd+z8pp.20 m. What is the magnitude of th p.e3zts+ /8ptd1yt rbe 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. nru6 ou+yzx-: (ji qij tt/,lr dvp,:4 The last corner is6 :idlnj,rr, j t4 /o+yuui-qvx: p(tz 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 thzd+e ld)mja z/-u 12wz mg61nie 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 d1d1im+ auez zlz2mj/)w6-ng electric field at the square's center?

  A force of 10 N acts on a chavt7u+9 nwj :lzrge of 5.0 mC when it is placed in a uniform electric field. What isut +jn:zv7 wl9 the magnitude of this electric field?

  A particle with a charge of 4.0 mC hasz nf)5xj cqa g+tz459b 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 in an elec:et zm:bcj 9*btric field of 6000 N/C pointing downward. What charge must be placed on the ball for mbb::z9c*jte it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCaor3f4jia/b+ zg b*qz6,*vi9 kmr8 qg. The ball is placed inside a unif g8vi3rqrizb /9k,b* +o* zfgq64j amaorm electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chau os2g n50bgl g(q-fv:o/bt:2tqe f/ orge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfac fsl ng:qge//qot20 -:o 5otbvfgb2(u e?

  A metal sphere of radiu +n s o xi(mmbg4zy/qm4s4h0h6cd9:m ms 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sms+ihm0 zm6/9b mcyx4:oms h4( 4qgndphere?