State the law of conservation o .actcty0s/ :pm;.c7mo,r/e2ytpzi df electric charge.

  Is it possible for two ,pa ecq5/,nrgnegative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eah j3z2xvq2:gbch other?

  A glass rod is rubbed with a piece of silk. During th,wuph0fo: byb2m8c0 6pa, kth e process the glass rod acquires a positive charge and thewy: , hob,m ph806a2c 0tpkfbu silk

  A proton carries a

  The model of the atom sh k0h3d,1q.q e*v vyvayows a

  A neutral atom alway0-9odpz. d(hub. te yqs has

  An atom has more electrons than protons. The atom yx, 8pmmb+21bxkn rr*z4g nh:is

  Materials in which the electrons are bound very tightly to the nuclei ar8rkc6tual. 9,f3iwtk* s 4phre referred 3*9 a84p 6fttrku.rkh iwc,slto as

  Materials in which the electrons are bound very looselgr;y9( gccbb f 5z:kmbjxc,). y to the nuclei and can move about freely within the material are referred to a gj ;cfkb,(y .br z59gcmc)x:bs

  A negatively charged rod 82tk molrcf39g l3gk 9is brought near one end of an uncharged metal bar. The end of the metal bar farthest from tfcg83 l kr9k3mgt2l9ohe charged rod will be charged

  Sphere A carries a net posdvzkh*fivf5* ;n yllx *;ot;9itive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whick;o h*d *9f*t5 ilvvzy;l;xnf h statement is correct?

  How can a negatively charged rod charge an .mcp8q ,r*vik electroscope positively?

  An originally neutral electroscope is brief-3mbm-*n yqd 0xb:qxjly touched with a positively charged glass rod. The qnb3qxy b *-m:0jdmx-electroscope

  An originally neutral electroscope is grounded briefly whi:bbzp f,: d4h9p0jnx qle a positively charged glass 9:jbqh,db 0 ppf: z4xnrod is held near it. After the glass rod is removed, the electroscope

  A positive object touch5nlt 4 bchxri*3ko/7ces a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch 5x3cbo4c h7 r/*kil ntit. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral8ayi2 cq,.svvb xx.g( metallic ball rolls straight toward the object, butq2(v,.vx .cxyias8 bg 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 cou)w8s.k7 p+r: nlpgbjnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance ds 78ghg,g2fd)9znm eu+4pb la. The first charge is larger in magnitude th,9 ms+4ngz82g blegap d)f7uhan the second charge.

  Sphere A carries a net (k3pmctyz o-+gg ;y i eso)5,jr1l ax6charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic foo ;,+ 1ktxzr3 g mg-cpoisy)a y65l(ejrce between them?

  Two charged objects attract each other wwj cdco o :gl1yqa6p)-xg)4z ,ith a certain force. If the charges on both objects are doubled with no change in separation, the force between p woc,-g):4oy)gl xac 1zqdj6them

  Two charges are separated by a distance d and exert mutual x nrxr zp9-+y0attractive forces of F ony 9x rp+z-n0rx 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. Wh ti69e lcbl:f*at happens to the force between them if one charge is doubled, the other charge is triple:9 blt6ecil f*d, 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 oq6 vkx uqocom) zh9 vi.9777(oe gx1bhf 1.0 m. What happens to the magnitude of the force on the proton if (g vo qx6xz7uhqh9 )17o oembicvk79.a second electron is placed next to the first electron?

  An electron and a proton are sepoip-.(:vp6 3 vsxxpx uarated by a distance of 1.0 m. What happens to the magnitude of oxup-xp:6 vsp ( vx.3ithe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are s-p(vg3pa ()1opqv jot eparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 (pogja)p1t -qv (v3opm closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second po;lnt:,k; se8jbgz4:f z m5 txoint 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 z; n,s5:ztlme4f :ox;j8t gbk 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 t)itit* ft4 po v(/v9gzfr .*lmriangle. 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 cha 4/.*mogi fft(t9zvi)tvl *r prge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vec7p2yfqwb s3c. f4m j7ftor?

  At twice the distance from a point cha ljak7p,2vwus;+ci 5 zpm .ypa ,od,7orge, the strength of the electric field

  Is it possible to have a zero electric field value s:+enj s qqgc8p1 1i0ybetween a negative and positive charge along the linij+q 0eq1s1gp :y8 cnse joining the two charges?

  Is it possible to have a zero electric field vacjgyshc(+ )6h)n2 u adlue between two positive charges along the d+(unhya6h2scj))gc line joining the two charges?

  Electric field lines near psitvbwu /;u l2e m4uai*d8*y(sz mive point charges

  The electric field shx1h5)az l6 fgz7sdg/ sown

  Can electric field lines intermz5j fl v15gflk c;8c3sect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a un kmncf2 srax)4-kbkky 3vglk.a ..v8)iform electric field. Give a statement concerning the electric fiek.24 arck)-sb.g.xavk 8k 3mlnfkv y)ld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame9ox6 bo2-y wl nbu3r6oters are each given the same charge, the electnx brou o lb66wo-9y23ric field (E) midway between the center and the surface is

  A cubic block of aluminum res4*w4b/2d9ww u3 *gqwnf)hiw qg:rjk j ts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's tk*w*w43w2n dq gj:j4w 9 )grqw/bfi uhop surface?

  If a conductor is in electrostatic equilibrium near anizo48l shw*x1cv yiz 4:ba8n ) electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ;k2 dizq )fo,drfmzi6 b(2-8ti4vi fqgrounded. As compared to the case without the hollow sphere,fz b6k8fii2(;q4i omd vitq) dfzr2,- the electric field at a point directly above the hollow sphere has

State three properties of conduct 4u:ff9z: tbsk8 o.puzors in static equilibrium.

State Gauss's law.

  The charge carried by one zfp/aouy mhb qp7jq7+9 ; cnnb+(1jk7electron 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 ofb;g1 a1 6-ldyk8 xc.aik.nj kz +2.00 mC. How many more protons than electrons does this piece of plastic ha kx1l8c.nkj-za bdg 1y6;.ai kve?

  What is the charge on 0jyews-q.awx r w.)cy/-t ek 11 kg of protons?

  An atomic nucleus has.j u3y(0qu sa70ooa-ys wz m4y a 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 valu,mm6x xg 8 3,yrwl1 jzzak3b8ves of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between m,ab3,rzj8w36v18g kx zmy lx them?

  A 1.0-C charge is 15 m from a second charge, and the force 9 xgszf5o* (zrbetween them is 1.0 N. What is the magnitude of the second ch5*zzr(fx osg9arge?

  Two 1.0-C charges have a force between them of 1.0 N. How fyccixn5k z su;o(.)z; ar apart are they?

  The force between a e0 ;*e 1v;*yfwfeplkmm )m+ta $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience)4qf:4m gjdkpa ufk(; a 1.0-N force. If they are moved to a new separation of 8.()f gupkaf;k4m4 jdq:0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis.yn j v.;p5tuua7 b0br4 The first charge is at the origin, the aty ;v4bbu0nu7p5.jrsecond 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 mC is /yih, + kj)si, vhy-psplaced 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 hy+ i,/pkys-j,s hi )vof the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following j0thjm3zgz53yfy14(i t(1 p, pzl ocb+od (rppositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 t1oo g 53 3(zirp (mht lz(zcbf1,jj0dy +4pyp= -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 placed at the center of a squa+egj +s5ogzw. re, 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 onogse.+z+jg 5 w 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 ygo.6 age4w* tm, 0); Q2 = -1.0 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 wg 6t o.*ey4gacharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC i q ob*uuuybx8y ,b ;;55ekiet0s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the k ;ubi558q * ;boxee yuu,t0ybdirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertica2-m:vy*iq g ves of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onvi-2gy vqm*a :e of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what inz.mp7od 95g60kl xypoint, 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 would be z6z9 .o5nil0 yxpg 7dmkero?

  A +3.0-C charge is at the origin and a +9.5rgz8 ab-q2 vx0-C charge is at x = 4.0 m. Where on txg2r5 q8bza-vhe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed aa )zctqx7 2imqu.0xf4mt9 zi 1t the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that0mtzimz2q)u. 9 4 a17ftqxxic the force on it is zero?

  A copper penny has a mlk1 hqz,j2e5ae. j0*yc6b l;kz3 lundass 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 agh rk*-puhs to p2*n*l2ainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the elep2k*utho2 ls*pnrh* -ctron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nq9kuat5,r6p ;f-m2yez(2q gonh * utkonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart utgktpy e m 5-ar9k2uq (uf;on62,*hqzntil 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 of the elect22-zvwpjw)jb o ww:/ gric field at a g /zpj vw2:bow2)j ww-distance of 1.0 m from the nucleus?

  What are the magnitude and direction of thev, zxoq6 o)8sy electric field at a distance of 1.50 m from a 50.0-no)z 8o,xqv sy6C charge?

  A 5.0-C charge is 10 m 8vhinzj8rd2 :ob*,e h from a small test charge. What is the magnitude of the electric field at the lo 8,8zhne*hbv r:djo 2ication of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is *5w -ekd9uidd-8ejs xthe direction of the electric5djke e sudw*9-i8x d- field?

  A 5.0-C charge is 10 m from a small test charge. What isdezrn- 6ke71c the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge-kn d 16eczr7e?

  Two point charges each have a value of 32)rcy/y 1d; t9vegbtyul4 n) f.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway bly1 ; u/4)t t)re2gyn9vbf dcyetween the two charges?

  A 5.0-mC charge is pl6hf prj *u25yv q2xu.aarw2c)aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm maw.a*rxrf h522acu2 )q j6up yvrk?

  A 5.0-mC charge is placed at the 0 lpa8i np/(g,lr9kw-acm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whatna8pr gakl9-(,wpil/ point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and 2+n;llb hktm2yw;w1 6x6nqc9 nhy jr3-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point ny 1 ;nl jw yt2k+ch2rb6n;6lh3mw9qxmidway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0 v*qny8sdb9mu/bs;( (jhozd 1.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squaredu/ z1n hbs98q sovm((d*;yjb.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornersdw0b (zx *y:2hc0j-cma0gsci of the sc:0(-w 0dhz *b2 cximgjsa0 ycquare 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it is placjn,223nh gvy0svcn u .ed in a uniform electric field. What is the magnitude of this elej3n un0,h 2svg2vc.ynctric field?

  A particle with a charge of 4.0 mC has :gy /hyo i*d2: q.gtxxa 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 60 qpg(edm qccn-jn2).)00 N/C pointing downwarmpq) g.)(n2jd-cnq ecd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a olylq,hhyh 1 3k l)g,2charge of -2.00 nC. The ball is placed inside a uniform electric field, anlqh ll y,1y,h)okg23hd 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 chargeo lz:7-f/ lwlo;e.t 1wrx6hx e of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfax1; w.e6:/wr xot7 llz-h eolfce?

  A metal sphere of radius 2.0 cm carries ut5:r5 ue+kia a charge of 3.0 mC. What is the electric ftia:k5 u5eru+ ield 6.0 cm from the center of the sphere?