State the law of conservation of electric char.du4o c/ht0 4wr 1/vj7upvxtfge.

  Is it possible for two negative charges to a1l3b; u, fo57 xdiofvyttract each other?

  Is it possible for a positive erl x3f,u,n o mvplf8-(kqx; zx8,,phand a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glonxqr5nie189-5 kwp tass rod acx1e9k58 twrn-qpo n i5quires a positive charge and the silk

  A proton carries a

  The model of the atomt +,lf.6tj(8vtauz+v) u.g.qod dfdv shows a

  A neutral atom always hafy/:+h 2b9raw7uopqn5 i3 bgcs

  An atom has more ele 6 ylhpf8)6pq ;.xiomgctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei arljewjj-u3coqj6*; w 6v3(bdj e referred63j bqouej; l (*wd36j wjjv-c to as

  Materials in which the electrons are bound very loosely to the nuclei anbg8:y e1k d8vhvt)f 3yd can move about freely within the mafy)kgt8v 3ehvb :d8 1yterial are referred to as

  A negatively charged rod is brddk2p 5zak /- 2ayad+zought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be char5 zpakdd-/dky22 zaa+ ged

  Sphere A carries a net positive charge, and sphere B is neutrak5 y trucyzldx -dugg4y/ /0i;um:dr83xe.9ml. They are placed near each other on an insulated table. Sphere B is briefly touched with a w/-cy xe u;:5yddlgr ziugxry/d04 9.m 8kmt u3ire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elek)y i++t blb *rk4ey/h i9,zse*e.opectroscope positively?

  An originally neutral electroscope is briefly touched with a positiv. ybz 1; xfcvza)h5q;eely charged glass rod. zy ;xevqchb5a.zf) ;1 The electroscope

  An originally neutral electroscope is grounded briefly (fp9;q(4x / hzh,mfb*svp wbpgz )6bxwhile a positively charged glass rod is held near it. After thepq,bpgfbz4b/p9( x;hz(*s6vxf )hwm glass rod is removed, the electroscope

  A positive object touchew1c q9 d61y uwxg8t 2u5eqdn6ss a neutral electroscope, and the leaves separate. Then a 5ex2tgdc1wy wuqun869s 16 qdnegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placgm cfq v:tz2n4) ,vo.ged on an insulated table. A neutral metallic ball rolz.42of)vm v,gncg :t qls 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 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 consthri2w kji 9x0ct1zs /0ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanc *6z 1dbt44p3v2wxiap jhxt;pe d. The first charge is larger in magnitude a1v *4;4p z2jtd6xh xwi3 pbptthan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pla *r)l / kc(jt,),l,xf qrzn7or njp0joced near each other on an insulated table. Which statement best describes the electr*0,nx(j tqo pjlo, k czlr/,) nr)7jrfostatic force between them?

  Two charged objects attract each ihe4u q l+f9t.other with a certain force. If the charges on both objects are doubled with no change in separa uq.l4t9+iefh tion, the force between them

  Two charges are separated by a distance d and exl 6wl.k1wj2ei k8 stz:ert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new m6ll 8skij w 1.2ket:zwutual forces?

  Two charged objects attract each other with a force F. What ha yo ecurj *3*3mk4sws(ppens 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 originarmkc 4s ujsy3(oe3**wl value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happenvc;u75t2g tw jaaesb4k1adc ,+yi*w)s to the magnitude of the forcas,v du72twg1y cbia)*w +k t;c 54eaje on the proton if a second electron is placed next to the first electron?

  An electron and a proto6izl zw vmz9jl3f 5t4q*n:hkd4ga-n 8 n are separated by a distance of 1.0 m. What happens to the f t6ll 3 hqkd4 nzmvigzn-4*a95 w:8jzmagnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wha2 w1yf31dw twb p1duf 3t1:amqt happens to the1w2113fwp wa1bm3qftyd:utd size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plj i2.k14l*bbm nc59jx sc*vjwaced 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 asm 9wvi2jc cj4b5kj1 *lnb.*xre 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 centroid of an equilateral triangle. Wheog ;83j 5ssircn a second charir 5gcj;sos3 8ge 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 of the other vertices?

  Which of the followiwi9 ,5 voko44 deam. nxsto(6ong is not a vector?

  At twice the distance from+vxc c 4//)tj1aq lnuu a point charge, the strength of the electric field

  Is it possible to have a zero electric yqs;am :gyjf** 3c 48usbp 9wifield value between a negative and positive charge along the line jyj y *;pw us 49qfmb:gci3s8a*oining the two charges?

  Is it possible to have a zero electric field value betwwma,*ux +2(rj12 m 0bmffn (rri6tcqh een two positive charges along the u+r(xh1 cnbqt,fi mw6( 2jm0mrr 2a*fline joining the two charges?

  Electric field lines near psi kvk fs6f,5e7bsef uyayr 18de9 m:c1ie9. b5itive point charges

  The electric field sho0b6 jl4nep bxhes;4bye; b v*8wn

  Can electric field lines intersect in frk-hlv espw4eb0 ,6/ weee space?

  A solid block of metal in electrostatic equilibrium is placed *rzlo/)pzp108e oyt mc y;4xdin a uniform electric field. Give a statement concerning the electrizzx1drmce*y0op;/pyo )8 l 4tc field in the block's interior.

  If a solid metal sphere and a hol gt sq/z):i: ophwq;(rlow metal sphere of equal diameters are each given the same cq (g) pirt/qh :os:;wzharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum r oyql;u6x vci1f:qh) +oetx,)ests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the c;vxq 6x)fh i oq,lt)c ey:o+u1harge on the block's top surface?

  If a conductor is in electrostatic equilibrium neu j(sgone5+o 1/ko,q8pxggl0ar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tha s 9nllm5 8,+e6laow fr1l-yyit is grounded. As compared to the case nora yl5s+81 yf 9 lll-em6,wiwithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of cr8(f a5*clu(i 5e;uc3 wfq pjlonductors in static equilibrium.

State Gauss's law.

  The charge carried bt,9 zn lmz7qswwdut1,d7 7ce,y one 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 mo u(qc0g3( vwiare protons than electrons does th(u (qv0iwc3ga is piece of plastic have?

  What is the charge on 1 kg of proton m/l.i 4iy*csnas7 mlq bj8,.ns?

  An atomic nucleus has a chqfr-mg v-vds o6.ps87i kn -)varge 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 v eg*ocam n h6va 6go2y32 4q)an+*lyfzalues of 2.0 and -4.0 mC, respectively. What icm2nzal*y ea)6v g64 +*2fygn3oao qhs the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fo0a+ 6zdd 8euyk2h zieo: q93ylrce between them is 1.0 N. What is the magnitude of the seco6hkezq2yy08 od+i9lzed:3 aund charge?

  Two 1.0-C charges have a force between obbmlk2srt.u*d n7 4g, w)rm1them of 1.0 N. How far apart are they?

  The force between a u2 rkyb1u;7za$30 \; mC$ 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 fs li) f tyxsq *ue+m)pa5j.77aorce. If they are moved to a new separation of 8.0 cm, what is the electric force belamp.s 77*)5jtsye qxifa+ )utween them?

  Three identical point de 50*mub)f um8fatx9 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 magnitude and direction of the electrostatic force which acts on the charge at the ordf xt0mf8um 9*a5)ube igin?

  Three point charges are placed on the x-axis. A charge of +2.0 x94t em9 4thsl-9h;bs dvz+rsdor1t7 mC is placed at the origin, -2.0 m C to9l9hst v srbo +-met;s4rt1 x49h dzd7 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 origin?

  Three point charges are located at the following bjv41vtj14 q9wma qk:positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -v 4v9 bqj1mqka1:twj4 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 p nzm;(yoz; f8blaced at the center of a square, 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 magnitude of the force that actsm;ofz8 nz( ;yb 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.cv*( exckb,w 1gzj: q.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 charge?.cwv(xe :qzjk,g1c*b

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mrw f(/5e16yt7 qmyg; h/ tj gcar)q9uq); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0wmt6e5/q;tgr fa )jg1y /7rhu(9 cqyq nC charge?

  Three identical charges of 3.0 mC are placed at tf3o hrpwutz u,8t mu;g ,1g6+the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrut,,u6o1m h+;8 wrfggutz p3tostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At k;rlhl8h*s y v+.g.oeqt -sp)what point, 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 wouldolsklh-).v+ .p;*teyhs8 grq be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whltj0c 0d2 jjxh, .hci5jqq+9 dere on the x-axis can a third charge be placed so the net force d .+0j9lj c,qqdj h20c x5ihjton it is zero?

  Charge +2q is placed at the o zuy)(r- aa)ojhf4dh4 rigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force rz4h hyd-ao)au)(4f j on it is zero?

  A copper penny has a mass of iv(0v uhwfjd fr(:/fd nh:,5)pn qwe23.0 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 z22ye-spfuo79 .ijn+ruls 8*hpdv ;dforce of gravity by the attraction of a fixed proton some dil s;e . zhind8j*2u-7ovpy 2sr+dfu9pstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from.mqq.bla , oec,kkhj(j8 r8p jbq.u 6* a common point by nonconducting threads which are 30 cm long. Bru8 c l6 *.akqj(hqjk,,q . ebjp8om.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 of +40e. Whaorv1)jbukg gyaogp s65l-21)e2j7bv :h bx .zt is the magnitude of the electric field at a olj2p v 1hevsga 2ybb7b1)o:) g.k gr juz56x-distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dis n )ro7g,+cvq2drl 3tttance of 1.50 m from a 50.goctr2 dtv+n 7l )qr3,0-nC charge?

  A 5.0-C charge is 10 m from a small tesv1; ivg b(* mo rn ,,h-s(clf:of(waert charge. What is the magnitude of the electric field at the location of the test charge?w-nhv ,;b1(ra fs vf co*,li:eo(mg(r

  A 5.0-C charge is 10 m from a8r.. qsrgkuy 0 small test charge. What is the direction of the electric fig.us0q .ryr8 keld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f l teyuxo.7iy,82q- kporce experienced bi, .8xlpy-k yqu7 oe2ty a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a d2,z2e2trmonh: ftw :value of 3.0 C and are separated by a distance of 4.0 m. What is the ewod:e2mt2 zntr 2: hf,lectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meterk+q*63 tadkpqfhq w-02inoi. stick and a -4.0 mC charge is placed at the 50 cmnkd0-q3+ik p.if6a*oqthw2 q 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 r 8nia fn:*( cq/k3ukfim k71ha -4.0 mC charge is plk1u m3c af(k :i*k7/hqnrn8ifaced 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 m 6(q ) 5o (jg9qfa6fs*fzkgbk= 0 and x = 0.20 m. What is the magnitude of the electric field at thegz6k f)5qs(qmabjo6f9(k *gf point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sid-wu v 5g wdpxzwr4543ie 0.50 m. The last corner is occupied by a -3.0 xd rw55wgwzpv4i3u4-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 the corne s*z wkz u50:niyvrs64rs 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 az5:06wiu* vs 4rykz nst the square's center?

  A force of 10 N acts on a charge o2 n +lr,nd5 m4ojpkwu3f 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elec,3o+un lkmp 45ndw2rjtric field?

  A particle with a charge of 4.0 mC has a mtp/: 2 +h8ttmmksj x*iass 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 rf5 zz+;w-zkza5x2u vg is placed in an electric field of 6000 N/C pointing downward. What charge must2vark 5z;fx u zz-+w5z be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charg18f wuzcl+hr ;e of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of+fw h8l1crzu; gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge t)fk te- 5xy:dof +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphetd:k)eyfx- t5 re's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electriy m0 xcv5p5ff)eef:.hc field 6.0 cm from the center of the sphere:f 5h ec)vx5.p 0effym?