State the law of conservation of electke 5a7o1jcpv)ric charge.

  Is it possible for two negative chaya g*cc5lfjkyvhvtb1;ym4 h1m /o)y8, ;oe1arges to attract each other?

  Is it possible for a positive and a negative charge to attract each other?u0gwe zo, hp-1b2dc pd (p)*oo

  A glass rod is rubbed with a piece of silk.f4c )gg a.v7xc During the process the glass rod acquires a positi 4 acvgfx.)cg7ve charge and the silk

  A proton carries a

  The model of the atom 9h)/ fpk:vug1q6yt 2fmzc9j vshows a

  A neutral atom alway f849pyy6 8hd1xk- bs0sr zgyhs has

  An atom has more electrons than protons. z aplid(j0c sq0:z+i4The atom is

  Materials in which the electrons are bound very tiw-/hmk 0b 6lu1dj;vxg cw,b4wghtly to the nuclei are referre 4d ghl1/b;, ku wxb6vcw-wm0jd to as

  Materials in which the electrons are bound ve bf1b9m /-dutary loosely to the nuclei and can move about freba m/f b1u9t-dely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal /.k vwgw--k0 vdf qz25uudlt (bar. The end of the metal bar farthest from the charged rod will be charge kv5-d-lwuqt .f/ zvd gw2(0ukd

  Sphere A carries a net positive charge, and spr-/ yc0cn,0ztq 7bcldhere B is neutral. They are placed near each other on an insu7 cqd0,-l/b0 rczyctnlated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge a4 ln y2hp.rr9yn electroscope positively?

  An originally neutral electroscope is brie7d qhkl)g tnaib/ z x(a 0).vhknl9.q*fly touched with a positively charged glass)(0zqb glv at.in/k).xklq dhh9na *7 rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chargeoc8q2v ;wrgvx tese 8 ca8,;k*d glass rod is held neara 8q; eg*2t v korxces8;wcv8, it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thxu:ai muy3f .0e leaves separate. Then a negative object is brought near the elect i 0uu.y3mafx:roscope, but does not touch it. What happens to the leaves?

  A large negatively charged obw 3blewqm+a)jm uo:3s re:*0iject is placed on an insulated table. A neutral metallic b:aue:o3)ewblqw *+3irm0 smj all 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 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 arouo- ;xd f32i+fmq(5-ejdz Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance v50 ur)nx+fftgy:jvk. )y- fu d. The first charge is larger in magnitude than the second charv fguju y ynk)5 fx).:t0rv+-fge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near q5xkr+iu45ax+d/zh v;f2q 7pokqw c.yl 8:z aeach other on an insulated table. Which statement best describes the electros;+ruqx4+/57 qal f8 ioy:d hz5xcawq.k2kz vp tatic force between them?

  Two charged objects attract each other with a certain forg ai w36a6d/k ;;pblwitc*vt*ce. If the charges on both objects are doubled with no change in separation, the force between tkw36avw ;b*;giild /c*6t pa them

  Two charges are separated by a distance d and exert mutual attr dap1ia f)6(wdactive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcew d 6afd)(pai1s?

  Two charged objects attract each other9w0 c/kc9fbjp a luysbw eb( +0w)+ak+ 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 centerj k wy9bbae0/ (0kwp)c9a++b+wfl cuss is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happeoi8t*h/+xyyffnm+bi ei9u /3kx u 2l9ns to the magnitude of the force on the proton if a seco+yiytxu/h2ln8i3*kf moxi+be9u 9f/ nd electron is placed next to the first electron?

  An electron and a proton are separated by a distance wt xu t)syzp69sdl)fbq(j ./0of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placedxqbsf d. stzj9uy6p 0/l()t)w next to the proton?

  An electron and a proton are separated by a dista91j1b v.v zsm*w4tv ilnce of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m clbv4 t1i zm9.js *v1vwloser to the proton?

  A point charge of +Q is placed at the cengxhr)o uvr8.r0 yf2 bd.r2k4oter 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 ceyfhg.8xk. vo)b422 rrr ruo d0nter. 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 centroid of an equilats0 nrt.wcl (4erx: c3 cvnm2-meral triangle. When a second charge of +Q is placed at one of the triangle's vertice e2sxcc.n4rvwt -0r:cmn 3m(l s, 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 following is not a vector?9lyfl s*zv.c7 yc id9*

  At twice the distance from a point wwdud-)u zei 7wo0i,;charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and potkyiw5sbc rlb9(7u 39sitive charge along stw( yb5l3i99r7bk cuthe line joining the two charges?

  Is it possible to have a zero electric field valu2m id6t0wu sg+e between two positive charges alongd6ti +w20us gm the line joining the two charges?

  Electric field lines neg8( : wam++rttkih+tiar psitive point charges

  The electric field show8bp 0kn ; bwdvvn5+*7ixg2uh xn

  Can electric field lines inter0( k qzc.y/ bn0fnuom:sect in free space?

  A solid block of metal in electrostatic equilibrium i q).2t9 jtbanys placed in a uniform electric field. Give a statement concerning the electric field in the block's int)tqbat y .n2j9erior.

  If a solid metal sphere anou-;ew8)yw7q sx4qp r d a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface i; ywq -8uo4eps)rx qw7s

  A cubic block of aluminum rests on a wooden table in a reg pohy hm y+,b4c/vprup/*p 5 5l0 ,ykkwvl93ifion where a uniform electric field is directed straight upward. What can be said concer3/ v,/,vky oplyw r4py+p0 kbcfuh5*5h 9pmilning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nvjle 9nmlh:0y; t;yv0ear an electric charge

  A positive point chargedz; *hr6nxj z5 is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spherej6zdnz rh x5;* has

State three properties of conductors in stosj*7, 3ez vlq/+.zt5szem.js,hsx patic equilibrium.

State Gauss's law.

  The charge carried by one electron is g u oh2g+4(4( .wi w)ddjfydcx$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net cfh 32qbmtnb ew7w4yy v .k-)0iharge of +2.00 mC. How many more protons than electroivmfbn4y.w yk)30-bewh tq 27ns does this piece of plastic have?

  What is the charge on 1 kg oalgj56tpy78 ( v9pyuof protons?

  An atomic nucleus has a9dy8rhxmfx35; -ich y 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 charge values of 2.vtk8gy o0 y rto itu,:*-7j1ay0 and -4.0 mC, respectively. What is the magnitude of the electric for:kta- 8, 7j iuooryg ytt*0v1yce between them?

  A 1.0-C charge is 15 m from a second charge, and the foru3rv1r0a u bzsq,nn/ 4ce between them is 1.0 N. What is the magnitude of the second z31ur qr /s4aunv0nb ,charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fa8nvib6ai7 y:z r apart are they?

  The force between a bw9sw eph/sp)c2db )w(.j 7mko9m 9ob$30 \; mC$ 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.2t)wdibhcv58 9 fyuq0 If they are moved to a new separation of 8.0 cm, what is the electric force between they dbf )5ct8v9u0 hq2wim?

  Three identical point charges of 2.0 mC are p+nm.mu 1 ych7xlaced on the x-axis. The first charge is at the origin, the second to the rix7u1 n.hymc+ mght 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 th g,vben oj+283llpbe)e 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 di) p ,2ebvbl3j no+e8lgrection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positie/+zx iiig17cbxg4 2wj+ j) swons: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3 ij/4w1jxe2g +wz)isxg +cb7i.00-mC charge?

  A point charge of +Q is placed at the 7ilv4 a1u; wawcenter of a square, and a second point charge;1a 7au wviwl4 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 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 m); Q3 4z fco,2rdvo hqfcrt)5yy*jz/,)mf 2= 5.0 nC is at (0, 0). What is the magnitude of the r hf) ycm4o ffz52c), zyoqtj/,*vd2rnet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); 8; mn km hg3/,jejeu21sdqg7oQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directi2qgkg /eme,n8djosm 1j3 u;7h on of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placevzj5dnsu-b q) (6el r (w0zpt)e4nqo;d at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the cha4qounw)p rjz6zld vn(e; e 50)b-sq(t rges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m 3kxou3y5hvz,ogf/t pgud 3+.. At what point, on a line between the . pz ug hyk3g/tdx3o3,f+5voutwo 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 anyos vai:-+f- :el-eul0-w nmuq ob-+ad a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a tum:q+s -e- --vb lfn o+yaw oia0-u:lehird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qctfk t1rh9 p9vd/d0 .v is placed at x = 2a. Where can a third positive charge +q be plac1.cvtk t/hd prv d09f9ed so that the force on it is zero?

  A copper penny has a masdm:y)r*qr - yis of 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 theittl6 6 ue:3:e+ o;qinkbhw0 y attraction of a fixed proton some e6qtk: yihe+b;w:iuo 6l nt30distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a coikhv nsk1()8+wmsa2i mmon point by nonconducting threads which are 30 cm long. sn21aim(s wihk8v) k+ 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. What is the magnitude o. 5kjrxhw;48wi/s wng f the electric field at a distance ow g8.; nk/rsw w5xi4hjf 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fielg 0o*q 2wsz5kdst3o 5od at a distance of 1.50 m from a 5zqo0 5wd 3 ogstks*2o50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge.1odk;w2u e8mbw 0z7yv What is the magnitude of the electric field at the location of the zwvwmu8 yb;o0k7de21 test charge?

  A 5.0-C charge is 10 m from a small test charxx6ifvb:v x 8gbl5;) age. What is the direction of the electric fiel:)56bfvbiv gx8l axx; d?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudpw-lo8 w wp9byj9e +/be of the force experienced by a 1.0 nC charge placed at the locatwyp8b-jw+9/l bo9p ewion of the test charge?

  Two point charges each have a value nk-4j : vxek,,qpp5b93e;n d+aich rqof 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between4, r vqed,n:9ka xch5nbp;ijq-k3e+p the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c*bq,: 31hj ;gj 0fgw ywzaqqgkq*5; suj4u4 ayharge is placed at the 50 cm mark. What is the electric aw qq; :*5f;sju,k 3hgq0z4jwq uy*abgj 1gy4field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stp1p+bmo6 tzhms7j:+ zick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field 16topm+sm:z7hbz p +jzero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x b0kh; 96 yr zrwd7eym n+0cjqfpp3 dew 1/w/8t= 0.20 m. What is the magnitmp0 yh0d8yf 6;bj w/nd7q1ek+/tz9 pcr r3wweude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0 r n,k6.x)/ uhjz71qfljeff:0yzqv,b .50 m. The last corner is occupied by a -3.0 mC charge. Find the electri :b)rqez zj/xl hukvy7nq,f, f0.f61jc field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are ppn jf ia8n3t ;wpka j0y2n/4b0/zmd k6laced 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); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's c;y30a68 mt 0nz k dpkjja/b/4 2nfnpiwenter?

  A force of 10 N acts on a charge of 5.fx+w (mem x;.y0 mC when it is placed in a uniform electric field. What is the magnitude of thix fy +.em;x(wms electric field?

  A particle with a charge of 4.0 mCx ;h qmo+ z0ox1(q fq.hek o74scy,z:k 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 (r t.(-c l9edeseqz ki24 fi ph3)xu95exdsj(0.120 g is placed in an electric field of 6000 N/C pointing downwasjx(sce3(k(duqp.zdli9 5 eih)x-9 e4ef2 trrd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries 1f y vo1w oj(6+djf.7mo(za vhne::kha charge of -2.00 nC. The ball is placed inside a uniform electric field1hvn(:f:a(f 6+ wk7od zhyo o. m1jevj, 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 char9u)4is i,yq( mw+ge natsf 3r4ge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spher4nfyas),i9tiu+4 e ws 3q(gmre's surface?

  A metal sphere of radius 2.0 c,jz.ao1 xu* i3ggdbb gz; 9z0tm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the s*b zd ,zgai0g193g z. j;buxotphere?