State the law of conservation of electricb-9mjcs 4j(ese c ,r6s charge.

  Is it possible for two negative charges to attract each other-yrau91p4 ei nl*jiv5sm r:ugr38 d;c?

  Is it possible for a positive and a negative charge to attract each ot)3j8oi5zk p dmher?

  A glass rod is rubbed with a piece of silkojnnl ;tb:3eps -j ty4,o(wz6. During the process the glass rod acquire63:l (tsp- ;nj,zbey wo4no jts a positive charge and the silk

  A proton carries a

  The model of the atom shows a :bcumrqg(.)zj(. dbx

  A neutral atom always :)0zif9 q .ahse u,mnzhas

  An atom has more electrons than protons. The m, ewkr. /r,fxk8)tigxf,gv+atom is

  Materials in which the electrons are bound very tightly to the nuclei nkyfh3n0 ohlh12ixo .9t6 :tfare referr1n 9y6 .ox:t ltio nfhkh3f2h0ed to as

  Materials in which the electrons are bound very/0r yt0y2w )parq9 qplry coyoh-h11: loosely to the nuclei and can move about freely within the material are referred th2pr qa-hl00owtr :9q1o y y prc)/1yyo as

  A negatively charged rod is brough.c35s wzvqf5qt near one end of an uncharged metal bar. The end of the metal bar farthest from the qzcvfq w53.5s charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placeeodthehd ae, 4e* 82p9d near each other on an ins4p, *9 oh aedheee28dtulated 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 positivel6zm wy 2ep52 3*x;r3azd lxiwe2+bfdiy?

  An originally neutral electroscope is briefly touched with a positivefg,dkkgm /04n ly charged glass rod. The electk0/4 kmfgn dg,roscope

  An originally neutral electroscope is grounded briefly while a posit h-f,xwhl7 x7iively charged glass rod is held near it. After the glass7wh7lxx,ih- f rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves6 vqm7zn+yz*q8d.h.vj (jkk n )m 8tuk separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to (*..yvk)j87umvjkq+ n qnzd8zk 6mh tthe leaves?

  A large negatively charged object is placeaxrjd lzjy8r 5ls2i0pu 6;e2; pe0b:pd on an insulated 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 forward, but does not touch the negative object. At no time does either ball touch the negative ;6lrp:ib;x25 prjsejazle0pu d02 8yobject. What is the final charge on each ball?

  Charge is

  What are the units of the Cou;qoe csaf6)z3lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dish hth8ln9 )*wdtance d. The first charge is larger in magnitude than the second chah*thdw 98h)nl rge.

  Sphere A carries a net charge and sphere B is neutral.eocgh(0w d7e:97ffc j They are placed near each other on an insulated table. Which statement best7hecef:9( jf0 codw7 g describes the electrostatic force between them?

  Two charged objects attract each oth6ea7m/q1kz1 z4n nymeer with a certain force. If the charges on both objects are doubled with no chanz azqnmm4ee/ 171nky6ge in separation, the force between them

  Two charges are separated by a distance d and exert m:ihvuny. ms1j cp 1-s0utual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutua v.-:s1ncy hmp1i j0sul forces?

  Two charged objects attract each othek3d tn7r nwl37r with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, 73k rdtnln37wand the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton10:s7;bqagw4*a ql koroo vz. are separated by a distance of 1.0 m. What happens to the magnitude of the force on the pr. w oko 7;*r1qlvasbo0qz4a:goton if a second electron is placed next to the first electron?

  An electron and a proton are se r9fz47 rp,)hm2k0i;tuzycsc parated 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)2st zu40 m;rc,cfykrp9z 7ih next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to 2m.hny l- yrv6the size of the force on the proton yy rn .-6l2vmhif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at tl1p*4sze c lx3q3wgj( he 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 net electrostatic force aecj* 3l3psx q(zg4l1wcting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. W78g(g3)vco wbkkyu - ghen 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 th-8 oc)kkv g(7gg ybw3ue 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 is5ki* ny*ruk /io*eec9eo7,lc not a vector?

  At twice the distance fr5k56h.gj jhud(au mj -om a point charge, the strength of the electric field

  Is it possible to havecb9029-xjj/qzcxdrynx 3t 3s a zero electric field value between a negative and positive x9zcxj2 9n0rj x3/yts3cbq-dcharge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charge1/b7xuw:rj l jer mi6f-mfe;(s along 6bjj1rlwi;x rm(/u -femfe :7 the line joining the two charges?

  Electric field lines near psu,o..pe h doe0itive point charges

  The electric field shou)sff+.cek 9wx9 mz.yt+n hv 4wn

  Can electric field lines intersect is*l,gnf/ -u z6 )kfazen free space?

  A solid block of metal in electrostatic equilibrium is rjris ,dbwmp :;) 2hw.placed in a uniform electric field. Give a d2b: rs hr)p,iwj.; mwstatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ajz* o/u7xh;qn re each given the same charge, the electric field (E)qo/* 7;nhuxzj midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whewo5n-kt -li5x re a uniform electric field is directed straight upward. What can be said conl t-x 5-5kiwoncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrb8h0s- rrp;aaium near an electric charge

  A positive point charge is enclosed in a hollo),i+aw elo)hbgf5+fdo+ .w fmw metallic sphere that is grounded. As compared to the case without the +dm,)f) ifaew+hlo.bogw5 +f hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condare8x:l)+ czr6 ajn ri ;4ryyre53 vv+uctors in static equilibrium.

State Gauss's law.

  The charge carried by one eg3qy5cl tx23b lectron 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 ofgz2:lmv9c. l x +2.00 mC. How many more protons than electrons does this piece of plastic c29x lg.mv lz:have?

  What is the charge onbuu1ox jew 2rj: fczj /+fkr /)(gx+h7 1 kg of protons?

  An atomic nucleus has a charg)sd;a+:9sd l 7 .h qatppzfnn5e of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, seashf5boel cuu20kz88q9k9(:e- jjyt parated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. to:88fqa9 klkhus j9 j 0zee5 b-u(y2cWhat 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.j(,: ego n qe8t:jdm5z0 N. What is the magni8t5g:mjje zdo ,q (ne:tude of the second charge?

  Two 1.0-C charges have a force between them of 1ukm01 65azqe)lhf +tybph;v7.0 N. How far apart are they?

  The force between a fxs (8q0byx)u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialwy, 51/jj.zhbv(h iykly 2.0 cm apart, experience a 1.0-N force. If they are moved to a n5jy/,vy(h 1jkbzw h.iew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placer 6h2nk0qusri7 iip;9d 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 t p2i 09q 6nsuikh7;irrhe origin?

  Three point charges are placed on theqzqeuz r1 / ae4y--q 1edoqb/9 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 and1y uqzeoead-e91 r- /4qzqb/q direction of the electrostatic force which acts on the charge at the origin?

  Three point charges ar7cf gh p..av l)3dqk5oe located at the following positions: 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 tghd ao7f ) .5p3cqlk.vhe 3.00-mC charge?

  A point charge of +Q ia hjz/-gn-q*jvbxdh j 0 :u,+ns placed at the center of a square, and a second point charge of -Q is placed at the upper-lenh +ha x/0,d*gjun-jzq-:vj bft 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 = 5.0 nC xqtw960mr-2s -nos( ,ki adcqis at (0, 0). What is the magnitude of the 6 tn -(qi02q, 9a-ksmwcx odsrnet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m(b sy*5lkdy+l x7g ,gl, 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 oylg(*x gy+ dks5,lbl 7n the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed p,vdd3u 33p xhat the vertices of an equilateral triangle which measures 30 cm on a spu ddvh,3 px33ide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arkd4 s38vq+9x;ruqlmje separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place l9r4uj qvqd ;8mk+ s3xa 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 charlgrd-qoe( 7;wge is at x = 4.0 m. Where on the x-axis can a third char(-lqo dger7;w ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x (z8vm ;dvk,2( jgz dhb= 2a. Where can a third positive z2z;(h8db kvv d, (jmgcharge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tcx,kbc3fuu -o4 gh2 8total 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 for ni3z76uwz 2 hlp) xoroiik/(3ce of gravity by the attraction of a fixed proton 3x(i7 o2zokir36 lzu p)hn/iwsome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres ars *efnb4k.y 9ke hung from a common point by nonconducting threads which are 30 cm long. Both aresb e9nf.*4y kk 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 magn8pjnnctnf v5z00uht b y )*+7hz5lki )itude of the electric field azzul) +j*cn50tnp780hy t5v fk h)bi nt a distance of 1.0 m from the nucleus?

  What are the magnitude and directijog g 2.tx8wm.s n.e-v q qx.yx1+8wvpon of the electric field at a distance of 1.50 m from a 50.0-nC chyxj-sg..w gq mv1w.+txexv8 2 p qn8.oarge?

  A 5.0-C charge is 10 m from a small test charge. ov 0+:hg(r*ibbcjcc: du,n-c What is the magnitude of the electric field at the location of the tedcb:j +n*c -0c,og bcrhuv(i:st charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dygkixnj/s+5u- o + /ec;qgcmk1 a.c 2nirection of the elecu5cq- n+;c/ o y/ke1imjs xg.+2kganctric field?

  A 5.0-C charge is 10 m from a small wa1aglx2p4ex)vz j ;8test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of th a;l4z x1x2ewgv )a8pje test charge?

  Two point charges each have a value of 3.0 C v7 5i haep,ayve) y(3uand are separated by a distance of 4.0 m. What is the electric field at a point midway between the ,e3e(5y hv)p 7iyvaautwo charges?

  A 5.0-mC charge is placed at the 0 cm mat518p*7lqe(t s+rzdmg qfm ( crk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielc 78t1 5+q * lfpse(z(dtqrgmmd at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4h c sqzhk )9btu4)yz) om0h*.n.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?hhcbh .)t4om0sq)uy9k*z )n z

  Two point charges of +3.0 mC and -7.0 mC are placed at x9wv w2a w)nq.z = 0 and x = 0.20 m. What is the magnitude of the electr 9z2ww.) wvnaqic field at the point midway between them?

  Three 3.0 mC charges are atxuqg., yfnr1 iy* 4c8f the three corners of a square of side 0.50 m. The last corner is 4ug*y1,f8q.r nx ciy foccupied 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 pb4 /plebh3gk)u ;ilay*9 5mublaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1uby mb ) l uk3gph*e/9ibl4a5;, 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 of 5.0 mC wheetc,+ ogxkdx6 (em32x n it is placed in a uniform electric field. t,xg26x3 (dcxeo+ ekmWhat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ohhl )k3/z k2sc foza(-f $5.0 \times 10^{-3} \; kg$. 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 electric field of s.c)j-r5r zsk sk))dr6000 N/C pointing downward. What charge must be placed on the ball fs).)d rrj5ks)zkcs-r or it to be suspended?

  A foam ball of mass 0.150 g carries a charge of mq meq( ;1e8od)/k wpehi3+(d)z+ db :evmxlj -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of vz3eep(qehjmqm:ol; ) 8wd b+i+m (1k edx) /dgravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is thkb xp2q)2pz0 ge magnitude of the electric field 5.0 cm fromx )qgp0kb2 pz2 the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. k eh 4c5aw1dm( What is the electric field 6.0 cm from the cw4h5adce(km 1 enter of the sphere?