State the law of conserva8jud7)dta xeb0 jo0ax o7b5p 6www6m 3tion of electric charge.

  Is it possible for two negative charges to attract each other.ak9 ccu4 mwp3xat )f)wek.f l6z 2mp33j u;pa?

  Is it possible for a positive and a negative charo 6r-4w7dtgj hge to attract each other?

  A glass rod is rubbed with a piec1 y)pdi i8a*48 cf:kdorpqtk+e of silk. During the process the glass rod acquires a positive charge *cf di8kyt)a 8 4qpk1ri+op d:and the silk

  A proton carries a

  The model of the atom showfakxde -nc6** s a

  A neutral atom always hazr rtk6hsb) j;-xk z3.s

  An atom has more electrons than protons. Theyd-z6x.8vm/pr++7durfy x n m atom is

  Materials in which the electrons are bound very tightly to the nuclei are refer b0(hioe.yhide s 8kh0p4k8i;rokse0i( hbhi.dy;i4e 0k8p h8 ed to as

  Materials in which the electrons are bu a 3(seqm)n;yound very loosely to the nuclei and can move about freely within the material ar;)mq yaes3u(ne referred to as

  A negatively charged rod is brought near one end o*-(r2;ipj foa-d a gbc:zcw)qf an uncharged metal bar. The end of thzgji-q-f* owdba r):c(2pc a; e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrad1kx8 e va7u (dh6b1ibl. They are placed near each other on an insulated table. Sphere B is briefly touched7vb8adk(udi6 1hxe b 1 with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an e.piok7,5zc4y t+b nc/k4si n zlectroscope positively?

  An originally neutral elecs)vdfymn4mpx *g8x 8n4ti29 stroscope is briefly touched with a positively charged glass rod. 9mgs)8dpx t iy4nx fm*s2vn84 The electroscope

  An originally neutral electroscope is grounded briefly while a positively chzd;2bd oi3*wutoj bw:a;:hq.jih4 ag ( r2m7 harged glass rod dz;rw2 dhahb(2*g4 bt :io: q;3hj wjami7uo .is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and tiz)k2s b9i p1ge,c o,ehe leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavkbz,s )pe2 i c1,io9eges?

  A large negatively charged object is placed on an insulated table. A ne:1t q xt;p(dfrxtq r.2utral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral:fx r12(.d; pttqqtrx 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 conskdsol5,l;1-d lh, o ketant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The flh0dpiro21f zhjzahrx *0 1);irst charge is larger in magnitude than the sec)1j 0rarx2idf *oz hz;1p l0hhond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placedp1zr 1meotq 02 near each other on an insulated table. Which statement best describes the electrostatic force be zm o1p210tqertween them?

  Two charged objects attra77ryh9*ny703jfi3 jp v jlbnwct each other with a certain force. If the charges on both objects are doubled with no chl 70w397jinbrny j3jp*y7 v fhange in separation, the force between them

  Two charges are separated by a dist8b52bz(fk nd pance d and exert mutual attractive forces of F8d5bn(k b 2pfz on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hap 4fo l9wan(oy2pens to the force between them if one charge is doubled, the other charge io(9fwal yon2 4s tripled, and the separation distance between their centers 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 1.0sjg2 : -)rvquq m. What happens to the magnitude of the force on the proton if a second electron isg q:r)j-2u qvs placed next to the first electron?

  An electron and a proton p;s jkt)ui) q6sxq:i3are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is pu:txq))k i j;36 qsipslaced next to the proton?

  An electron and a proton are separated by a distance of 1 zor 7hh0jlb3xv7 594gobs3wn.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to tj xh0v7 35obozn49ghb 37wslrhe proton?

  A point charge of +Q is placed at the center of a square. When a second point x :rso. j0q/0)4wxvrfv-mmhp charge of -Q is placed at one of thf.jmrpr)ohs-v :vwqm xx/04 0e 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 is placed at the centroid of an equ2j-k ym ;hloj) 7jkyq,ilateral 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 forcej;y j j2 q)lkyh7,mok- 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 vectorvr0z ds:aahatkxi z.gi+i41 (y lh018 ?

  At twice the distance from a point charge, the strenglv-,opoikh9-vdag h n-rh) 8, th of the electric field

  Is it possible to have a zero electric field value between a nc,lqqfo90twq;0+ qd negative and positive charge along the lql ,ctqd9qw0+ nq;f 0oine joining the two charges?

  Is it possible to have a zero electric field value 8 x( ;dyiu4vfuj:;n(0oi w ryabetween two positive charges along the line joining the two ciniaru;x 4d wyu; (vfj0(8:yo harges?

  Electric field lines near psitaz i780/e,iie:gbdvp ive point charges

  The electric field shorg6i2k8 : .5m*ijn;mbqf hcp own

  Can electric field lines intersect in free spaxxgi 3x.i-z;kmy0y aw1ah8v7ce?

  A solid block of metal in electrostatic equilhc8o 7gz25goa ibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interio5og 2g ca8z7hor.

  If a solid metal sphere and a holljk6:zurotz6edil/cw34 t *v. sz n0j+ow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the s+zusnwve 3jlzd c kj.:*it0t 646ozr/urface is

  A cubic block of aluminum rests on a wooden tablgw kp, s7 eibmat0o3a0o .r(4f8ris 5ye in a region where a uniform electric field is directed s53g( e7, 8oi a4k.w0miys0bprafosr t traight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an eldm1wc x2/0 tdrectric charge

  A positive point charge is enclosed in a hollow me cfhfrr *:yi2ez41 6uqtallic sphere that is grounded. As compared to the case without the hollow yfzq 4 2r*fcr1ehui 6:sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equium4o n4i6 :gc :t-ht 37jeisozie,v g1librium.

State Gauss's law.

  The charge carried byl 1ka5fcy+ c4c 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 more protonr;xy0 dd wk ;yk7wrc0.mxih.0s than electrons does this piece of plahw. ;xkwd0dm0yr k7xr ; ci0y.stic have?

  What is the charge on 1 kg of pr/o kp;a1wvd r-otons?

  An atomic nucleus has a chaf1,dt -jw.hq51wf lubrge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1 spovu; 50t7gm.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric fgp0m 7uots5v; orce between them?

  A 1.0-C charge is 15 m 0,t sbb 8l(cexbeqqfcu)-xg gt 885 (rfrom a second charge, and the force between them is 1.0 N. What is the magnitud5bxetsq8ebct (u 0-xq f8g()c 8g ,rlbe of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How favl0thi -shf() hu/ )srr apart are they?

  The force between a sfz -cncvt* /*b*1 )n8 xy ju(conb6cx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience )b0h ,pqi-bmhmry g9:y*ee y- a 1.0-N force. If they are moved to a new separation of 8.0 cm,ye)*0m9gpq-hh eb,b ym:- i ry what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the 2v oa+opef.m,: ngab) 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 tpo b)f2,om ge:n.+av ahe charge at the origin?

  Three point charges are placed on the x-axis. A -u/zcvs;x h 9fcharge 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-scxuzhv9/f; and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positiooow y3 upk:7+6gyzqt-wjq 94bns: 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.u g 6yko9jtyp wb 4qo:-7+zqw3 What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placetu3vvyuyq2.vg 9f /q59 upkpe7d+ c5nd 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 fo2 f+k359vt /dyy9 envgu .q7upcuq5p vrce 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 yh*2x*bjl+gkjb/ rk 5 = 5.0 nC is at (0, 0). What is the magh j2 k/rjxb b5+gl**yknitude 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 (0, 0.10 m);vs p :x/c; (x ;gxga) xwt6n 0gwm:e,yl9,wlzx Q3 = 5.0 nC is at (0, 0). What is the direction of the net for0t ;w6:nx;wm(az9lexx/l xv xg,g,spwyg:) cce on the 5.0 nC charge?

  Three identical charges of 3.05 wmkwdbdvn 6 ,s3y8x2 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electr kbd vd3s2mwwn658xy,ostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whic2l ay;wd/v* qznz.vj p( 1cofcee t7:/h are separated by 3.0 m. At what point, on a line d:/2j71 ( en./owfcavype qlz *; ztcvbetween 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 +(qp rz 8:5 6mdouvwhb/9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it i5r (m/uv:p6q zwhb od8s zero?

  Charge +2q is placed atzf-qso2pf ,thpwqf866g igm:+6, ld t the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zert26q+ gdl p 86 fwtsp:f,h6-,q zmgofio?

  A copper penny has a mass of 3.0 g. A total of ov(x2 vxi.,rlzn /5zmz9l bz9$4.0 \times 10^{12} \; electrons$ 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 forcem7gh g4yh1gstuk:jyg;1 sl 1zym 36b5 of gravity by the attraction of a fixed pro; u 1gy4:6gzk 1my bthgy5 7shjs13lgmton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonjum(iwo prt kmt-4t4n;4d1b( point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatj( 4t1rokun4 4mtw p-midb(; tic 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 5n.nb5w3rtop r;9be0 q+sak efw q8v(qdh. x.of +40e. What is the magnitude of the electric fiesnr.qnbeq8qp;f(dw +0hwk.39 bea r o55.x vt ld at a distance of 1.0 m from the nucleus?

  What are the magnitude and ipmrcg 8ic7/d). komo,7 fit+direction of the electric field at a distance of 1.50 m froic k,/tgo 7r+).i7co dmm ip8fm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wae z9ovjpv:5m8rq:ux)6f g bf*+ng:ehat is the magnitude of the elf+9:u m6 :n5r b)*jfg v8gqpaz eevox:ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a smallouj wkq/bo64 9 test charge. What is the direction of the elec6okqo u 9/wjb4tric field?

  A 5.0-C charge is 10 m from a small test cha./ bmavwi(5/l jaq wx1rge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatibwj51vx/ (ai.q a/wm lon of the test charge?

  Two point charges each have a value of 3.0 C and are separate/lcx lr9j, )w)nknhr4d by a distance of 4.0 m. What is the electric field at a point midway bet/clrlkr,n 4hw jx)9)nween the two charges?

  A 5.0-mC charge is placed at thb0ol-q jtj,lfb7 *f 4ve 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is 7t4b* l bfv,qoj-jfl0the electric field at the 30 cm mark?

  A 5.0-mC charge is placed o3(bto vmbvs :+ a/ol/at the 0 cm mark 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 is the electric field zero?/(ovl vb+o3ob t s:/am

  Two point charges of +3.0 mC and -7.0 mC are place7ullg h a; ydz6d2z5j/d at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway b2 l7dydu z 65gj;z/haletween them?

  Three 3.0 mC charges are at the thre-ln3*pk jii 7we corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Findj7kli pnw -i*3 the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thl 1u,zocqusdue- h55 1e 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 ma1 -,5su quod e1cuh5lzgnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC 5c/30h c k81yqdusozq when it is placed in a uniform electric field. uo cchd80q/ zqk 1s53yWhat is the magnitude of this electric field?

  A particle with a charge of 4.oj xqr((p 9v9 2pzggq.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 g:y-0t9g co-y j *bwyryee:g6 c is placed in an electric field of 6000 N/C pointing downward. What:o crtew0j c9 ggy*yeyb:-- 6y charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrq*uu 2tmutk 4*ies a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravum utku2* 4t*qity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a ar1.k;04m omegax u.vs)gp.n charge of +2.0 mC. What is the magnitude of the electrmn;px .0age 4 vkau1r s.).ogmic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0oil,8u gt)s:p cm carries a charge of 3.0 mC. What is the electric field 6.s8p )ugt:o,l i0 cm from the center of the sphere?