State the law of conservation of evx4pkl xvm6k. j+0 hzh.)yn3 qlectric charge.

  Is it possible for two negative charges to at 2fp6axixu.3 atract each other?

  Is it possible for a positive and a negative charge ;58rzxukagl: to attract each other?

  A glass rod is rubbed with a piece of siay/w okx 9hjbk4 g, nv11:ui9qlk. During the process the glass rod acquires a positi1xo/ nkj bwk agvh,49iq:y91uve charge and the silk

  A proton carries a

  The model of the atomt)ze 2;u hld,m shows a

  A neutral atom always h3 w s5cg;d5djyas

  An atom has more electrons than protonbu u1d* 8yxfu:xjk3t 6s. The atom is

  Materials in which the electrons are bound ve0)l*p t)j62x mg0jebjxfgwh :ry tightly to the nuclei are referred to t2*j)phxgg 0 jfm0 ew):x6ljbas

  Materials in which the electrons are bound very loosely to the nuclei a r1/iwf2npc,u nd can move about freely within the material are r2i1/pcw,n fu referred to as

  A negatively charged rod is brought near one end of an unchargej,twdq upyhf5im2*mk ;:ql t- yir-7/d metal bar. The end of the metal *h yiwdjil/:-q upm72tfk,m q;5t-yrbar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. T8 c kq(os7dmea y.u3x4hey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corredqae37(uyk m8 4.oxc sct?

  How can a negatively ce */rb k ycjpc-,8dymx6gm6,1 fya 8lrharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posi,era83;axvi3xa y7mb tively charged glass rod. Th bxx aaayr3,ei378;m ve electroscope

  An originally neutral electroscope is grounded briefly while h q 3:zcv3*edd s:al+na positively charged glass raq v:+sc*dedz: 3n3lh od is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. l 37jrzy1w1bgz5r sym-;v) dc Then a negative obje1 zl)1vjb5 yd;s-mc7 grr yzw3ct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is p,a tph h8hcn17f9 zcq2te+k( ulaced 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, butc,u+hh cnpe9k h2t q7(f1 zat8 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 k w)3do s*+bk4nh(dgwe)lt;e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated e3k ei5:wmydt:b:+fg by a distance d. The first charge is larger in magnitude th w3b+tmy: d:i:keg5fe an the second charge.

  Sphere A carries a net charge anw ,,nj.2tjunz d sphere B is neutral. They are placed near each other on an in2.wt, un, jjnzsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ch8sf wg275eqm iarges on both objectssim5 7 2gqfwe8 are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert(/oe(tf t)* oa5wh9hcde qxa3 mutual attractive forces of Fe (/ tafhqt93h*do5o xe c)(wa 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. W-e9d o zn8,/3)cfrf* hsi wwrcbq y)/uhat happens to the force between tcr/ iow9bzer*scdqhw )un-) /83ffy,hem 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? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m w3 zp545.4 cffyovdyoi74joy . What happens to the magnitude of the force on the proton if a second electron is placed next to the first electro7yydjo4p 5 f.ooif3z4 5vy c4wn?

  An electron and a proton are h 6qk,uxov5y ey)9nt/separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is5x)9/,nqkoyet u6vhy placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ:nl 2 r* npqr0qjrv,9cens to thlcq 0:* rjr9r,pq2nnve 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 placedg4+8l 6( om:cli4hgjm u qafy8 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 m8ao( ig yl jml6+:4gh8fqcu4t 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 triangi d2p9. l* yi+ 6kszreum6utz;le. 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 force that acts on the center charge due to a third charge of su6dpzye*;z um+ ti6.29kirl +Q placed at one of the other vertices?

  Which of the following isb5lx 9lb-/aw.pk ki3k not a vector?

  At twice the distance from a f(* 2vfse(hmr point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negy 7xvsbzy- bf. /0ej uql.cl.5ative and positive charge along the li/xb . y.ey lqcsj.z- vfb07u5lne joining the two charges?

  Is it possible to have a zero electric field value between two positive/mx)g icb(*t a(ge lp( charges along the line joining the two glp)(( mac(xib/t *egcharges?

  Electric field lines near psitive point ckic0qo6-rofq.x5 v 4f harges

  The electric field shown,shg.qg .ilsuh7g, cn a s*/p;

  Can electric field lines interseefe qg-x*ffl ,6(xb8tx w w28wct in free space?

  A solid block of metal :wf8fk tn91sm in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field i1 w9:ts ffm8nkn the block's interior.

  If a solid metal sphere a3kmg je39a:jl nd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface is3 3j9:jkla emg

  A cubic block of aluminum rests on a wooden table in a region where as sarlvp2p2r)z8k; n0 +km.dn uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfv; ram2nk8dn0 +2zrs)pkp. lsace?

  If a conductor is in electrostatic eqip (fm;yv:xvgng f r,r;8 rb6 6l+mpd6uilibrium near an electric charge

  A positive point charge is enclos+ flcs.k c(ok5ed in a hollow metallic sphere that is grounded. As compsc5 +f.(lockkared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static f1/k ew3kn67+ivxzvi ok2wjs44 au*sequilibrium.

State Gauss's law.

  The charge carried by one eleswqw,kidb, .u3g )gtq* dx+6w ctron 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.xk:/t,v+c8j t1ed9yqe o8y ii How many more protons than electrons does this piece of plase it8 +ty8y v1:oicxk/,qj d9etic have?

  What is the charge on 1 kg of protonj1boo n;( e)6n ,0e8/lkg wzbky +fhris?

  An atomic nucleus has a h4d4af2jy :su2yl: bmcharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated ogcdxc:y0i8g v/8ddbl1ow1a6b;8 j m by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What i8lg 1oby8j cvb ;6awd0mc1d i8god :x/s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m2uwyzv9)i z y w8yge32 from a second charge, and the force between them is 1.0 N. What is the magnitude of the secondzyg9yye2)u2wwv83 z i charge?

  Two 1.0-C charges have a force between them of 1.0 N.zdcz;l,xb.9nqcxqokys3-9p 1rj 8 7 i How far apart are they?

  The force between a +/n g+cl 3plwg$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar tcx-7nu l45idyn(f8 dt, experience a 1.0-N force. If they are moved to a new separa i5uyxlf 84c tndd7(-ntion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firstw)bl-fdl * xsuoqf8(6 charge is at the origin, the sec8sod)lwf 6f*ubx(l q- ond 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 origin?

  Three point charges are placed on the x-axis. A charge of +2.0 m2 n6uf9v l9trmC 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 direction of the electrostatic force6 f9v 2m9tnrlu which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 bl6 u*4w1 a,zq0vcmh ymC 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 3.00,q6 1w0umbl h*yvc4za-mC charge?

  A point charge of +Q is placed at thh: frqlol,d 24e 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 acts on the center charge if a tq2 l:d4 hfrl,ohird 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 ,z89cp e rc:z 1sguw*pm); Q3 = 5.0 nC is at (0, 0). What is the mp,ge1zz8ruc *:cs 9 pwagnitude 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); Q3 = 5.0 ob)h; ix0 m7yw;6m )koo9s 2+ykjxj tlnC is at (0, 0). What is the direction of the net force on tk o0h)s9tbo xwx6 i2y 7yomljkj;;m+) he 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equm4 nvftp0si5: ilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of th 4 vn:ftmpis50e charges?

  Consider point charges of +Q and x(e3e vqj/4ge +4Q, which are separated by 3.0 m. At what point, on a line between t(4 gj/x ee3evqhe 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 +f 26zsyl/t xn79.0-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 is zerox7flz2s yt/n6 ?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wher-l8whvy6 fl 1ue can a third posi18fwhlvy - lu6tive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. * 7d vwi4x7h,exm5ybj 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 a647op3ybiiq25 l+jx bf*2 nsqlbf. h ggainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the elec7go +lb345 fixfb6qjyp.h *2lisqn b2tron is the proton?

  Two 0.20-g metal spheres are hung from a common pointq mb;pl94v))dhc5h o4r hmzht4 ;da x5 by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwh cq 55xtd;hzh )4 mvl;p9)o4adrmbh4een the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the ua;- tg: kfs*cmagnitude of the electric field at a distance of 1.0 m from thstk*a fg-:; cue nucleus?

  What are the magnitude and direction of the elect6ula ii,dtvcvgy vlocj(5f,f938h -9ric field at a distance of 1.50 m from a 50.0-nC charg,(8ui 3 l9d9ijavo v-5ycc v6l f,hfgte?

  A 5.0-C charge is 10 m from 41ce kw- wznu5q w0sl;a small test charge. What is the magnitude of the electric field at the locatio zcq1l5 wnuw4ws-0 k;en of the test charge?

  A 5.0-C charge is 10 m f* f my 1qg4-suuazx8o*rom a small test charge. What is the direction of the eu z 8-y*4xoamsgq 1*fulectric field?

  A 5.0-C charge is 10 m from a small test chalh ,ajxw gp3 5k)d 0sya.pv4h-rge. What is the magnitude of the force experienced by a 1.0 nC charge plaawhhlj) 35. 4kgp,ys0ad -xpvced at the location of the test charge?

  Two point charges each have a value of 3.2jpg)v8d/ wgyr*: jgi 0 C and are separated by a distance of 4.0 m. What is the electric field ij y r2jd*v:g)p8/ggwat a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of hl;q32k zlt;2g qk5ba a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What q bt 32;gzal;k 25lqkhis the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of aminy9d,iiq y:65-g so meter stick and a -4.0 mC charge is placed at the 50 cm mark. At y6i i ,sn 5odm-iqg9:ywhat 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 = 0.20 m.62s pu icbx, g)c0zq+uc 34kct What is the magnitude of the electric fieigcpt2,3zkc c c q6u +)us4x0bld at the point midway between them?

  Three 3.0 mC charges are at the three o xbto./ a9wt.corners of a square of side 0.50 m. The last corner is ocb.w9 o.tto a/xcupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whi v,d)e86h x1jphe 5 yg:ld)odpch is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC yxe:o d 68) 1jhpgde)5, vdphlat (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 center?

  A force of 10 N acts on a charge of 5.0 mC /6qrpz;6g 3yynw 4myuwhen it is placed in a uniform electric field. What is the magrp/ 4y ;3my66zyunwgqnitude of this electric field?

  A particle with a charvp:vk 6s+nf shat*5q9ge of 4.0 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 is placed in an electric field of 6gk/c)j+bg vozs h *j79000 N/C pointing downward. What charge must oj9h/)7 jsvkgc*bgz+be placed on the ball for it to be suspended?

  A foam ball of mass fsiu 9cz6ruxq+k*hz jg/3r. 60.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is sukc3 *9 rj6g +uiqrf6 /zsz.uhxspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge ofpl2)h*d+ qlg/f pz8jp +2.0 mC. What is the magnitude of the eld)pq2 +jlzpg p *8hl/fectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the)9bd/4s9wne ko yzvv 4 electric 4 9oev 4 kyn/bv)9wszdfield 6.0 cm from the center of the sphere?