State the law of conservation o:51nb yx//fw yemvdhp3jf )rdi5/wg , f electric charge.

  Is it possible for two neg /*vqp brw1wp cg:c, nodw,+)zative charges to attract each other?

  Is it possible for a positive and tpn,gkcnt98 6a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the y4l/p*q+xk4, m xhy3 zpdw +ilglass rod acquires a positive charge and4hyp3/xzq+xi+,4m ypldw lk * the silk

  A proton carries a

  The model of the atom spmdw y n)fr56zfjv mq1hv:4, a/ f+-vqhows a

  A neutral atom always has*mfz8cfl5vm-4k 2yp /flr8w7m yb+kt

  An atom has more elect35 *dh symx9rbrons than protons. The atom is

  Materials in which the electrons are bound very tightly to khhuf o6wdy-11 r:.z pthe nuclei are referred to 1r-uh 6 df.hkwzyo 1p:as

  Materials in which the electrons are bound ver2 lj t:av:)zksy loosely to the nuclei and can move about freely ):t asj2v:kzl within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged mjrrqcts xa6c2f m96ix*rl98*8j o +ucetal bar. The enlj*c c96 8qu 6jorr2m9+crsx t *8xfaid of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chargl9 ttphy :++*dp/:omwtt)nsqe, and sphere B is neutral. They are placed near eachnw:tsthp:q 9)+ o m+/tl*ptyd other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negativelyb8md s.-el(x o.as98jd-k k ab charged rod charge an electroscope positively?

  An originally neutral electro:0m. bniwr*vmld-)3r b 6veeh scope is briefly touched with a positively charged glass rod. The electrowe-lm rn e0dib)h* m3 :bvr.v6scope

  An originally neutral electroscope is grounded briefly zn2c88klr .dp; m5 yzmwhile a positively charged glass rod is held near it. After the glass rod is removed, the ele8.m5prd;c y mknz8zl 2ctroscope

  A positive object touches a neutral electroscope, and the lekjtn 3kwt/ ;q8aves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to then3k q/kwt ;jt8 leaves?

  A large negatively charged obutsfn3m-6lglw: 4 , tbject is placed 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 n4l6uwmt-b t3:lsfg ,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 Coulo9zs 1way -e9jkmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chankh))5a k1foqpzn* c;t:88v * t yiyf2g+adnnrge is larger in 5c*kyaqn+d ) nnnfh 8o8az; t):k ivtgf*yp21 magnitude than the second charge.

  Sphere A carries a net charge andkut w8mna cb61w:i-otk olf e 53l489b sphere B is neutral. They are placed near each other on an insuk8 8-bn4w1om:lctlai w 5fbte ko963ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain eq4m:sny1)vnri 67u q4 2pkkqforce. If the charges on bot4sqnn2qvm) 7:k ieury p641qkh objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attr 9yaf +1ozmds3.gwf;a active forces of F on each other. If the charges are separated by a distance of +f.sow3 9 aza1mfd;ygd/3, what are the new mutual forces?

  Two charged objects attract each oz+bs khd+kib9gk8akxvf0 g4 ,21a9is ther 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 centers is reduced to one-gx kfs b +08k,+9giiaz2kv1khb9asd 4fourth its original value? The force is now equal to

  An electron and a proton are sepv6a+6l rndm *garated by a distance of 1.0 m. What happens to the magnitude of the force on the ndrl+g6v a6*m proton if a second electron is placed next to the first electron?

  An electron and a pr x8pjz:e 9zie04bmf,doton are separated by a distance of 1.0 m. What happens to the magnitude of the fop9 j edmzz48xe: ,bf0irce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated wg+e:xway;hg k(r+w2by a distance of 1.0 m. What happens to the size of the force on the proton if the electhe xykw2;g+(+:rww agron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a seco,m;ju ;.bnowie 1xqhuqs06, xnd point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force ofw u,;qxx 1ij ;nu,6hobem s0q. 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 plw6r q0 4vldo x q7 jn3v,t:32ylozqqm,aced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of thxlo 6yzq ,02,j3 7lnwv m3tdq:qvo4qre 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 +Q placed at one of the other vertices?

  Which of the following is f;y8l.r5s;mu0+ f4 c efdq w4if.po gcnot a vector?

  At twice the distance from a point charlfi34 mp8 dc 3we7xsasg -w9jarh-z5(ge, the strength of the electric field

  Is it possible to have a zero electr,7 gwnkj tf q8:3 6aa)m)apssnic field value between a negative and positive charge along the line joining the two c gwf8s 7:t3km)s,qa )jnan6apharges?

  Is it possible to have a zero electric field valuejdt fjh)(rp,ss 6 b(f. between two positive charges along the line jo(hj(.r bp, tf) sfj6sdining the two charges?

  Electric field lines near psitive po cvvpwlf(ax dau-(4) 0int charges

  The electric field shoiad9 .1p p m5x3fl(daqwn

  Can electric field lines intersect in free+h2ah/1:-ensjml rvf h o-jx0 space?

  A solid block of metal in electrostatic equilibrh( cgfa j8x1ma8v1on( ium is placed in a uniform electric field. G1nogf8c xm(hj(vaa 1 8ive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arem 4nud38htc f9 each given the same charge, the electric field (E) midway between the center and the su m4fd98thun3c rface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformt /kl-/eg,dkdo6, lww electric field is dire-/6/kdld ,gek,w lwot cted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equiv-g9/zz5fa62m dxpilwko 8r0librium near an electric charge

  A positive point charg24vrg ,8gy+d81, jlkkyqaagvv *f+dm5 :nl mne is enclosed in a hollow metallic sphere that is grounded. As compared td+ 2,y* m,fj1y v4ak ka5vnlgm:qrl+8n8gdvgo 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 equilibrium. jql ou/.,f4a 7lq-jtz

State Gauss's law.

  The charge carried by one elecq.evi;b *8yy. s;hw(, j strfdtron 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 ne 7;qa;2e /qf( kaqlyait charge of +2.00 mC. How many more protons than electrons dof q q7; e(ai/2yka;aqles this piece of plastic have?

  What is the charge on 1 kg of protons?r d+ d67(mdpkd

  An atomic nucleus has a charge qkow :imw:q zn.s-5+v of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.51cv0 8ehbykw / cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forceh1 vc/8 beyw0k between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thyi8 z : jf;dpgme4ah37em is 1.0 N. What;yfpgd z7aj3:e im h48 is the magnitude of the second charge?

  Two 1.0-C charges haveh/ dy0jugo,ex 2; *dod a force between them of 1.0 N. How far apart are they?

  The force between a o4fc7 c6srrj 0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, ex xcs5;4*de;/ twk umrgperience a 1.0-N force. If they are moved to a new separation okw c5 4 stdg*ru;/x;emf 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the j8z, sg8 vkfx/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 forcgk8v/x8,z f jse which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A char tsns(2;o ,wlouv+(iyge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 wss+ovl noy,2( tiu;( mC 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 located at the following positions: Q1 = b.i;c.+jqas t 2.00 mC at x = 1.00 mqt .+bji.c; sa; 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-mC charge?

  A point charge of +Q is placed at the center of a square, and a secondl0l i-;asqsjtadz;g 2fa: +..qm/jpm 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 iff ;qmga/ls.2ij -zl0tjd s:. m+a;apq 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 d7 4mi f9nn-u h,hc)ca9k/dnhis at (0, 0). What is the mimch h/ ,n9kn9dufd)4n7c a-hagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, o;mi(ax3+so(kk j e:zs o,t)c 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direct ciaoss;j o)3+ (zk xtm:,eko(ion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of m k)pkp busv9;,x+ 8eq*6wh hlznob/*an equilateral tria,)* hs8nm/*w u9 pb6;blokkphxqvz e+ngle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sep jkia .;/3vkp vz91+eoz k;masarated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the;io9p;.av3 vk1 kasmz/e zj+k electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at xgr7 51wn;ja4 qobhl ,mif;+jc = 4.0 m. Where on the x-axis can a third charge be placed so the net forcgjj+ m1l5or;i nchaw4;f, bq7e on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 22f;y8 mozle 8efw+- nza. Where can a third positive charomz w82efe+8lyf n ;z-ge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tv5 k c(ifw1v9aotal 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 the attractionssf ev/j 6xh .,bj )4ylif;m6qc az;skak27 m; of a fixed proton sibsaez / sslfh; )y;mj.vjk7 f cm;,66 4q2xakome distance above it. How far above the electron is the proton?

  Two 0.20-g metal sphere,, nmm,a l28eem+ck anw*p.i xs are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle beeam mn+a.n c,2ekip x8 w,m,*ltween 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 oftficp::gm.w7vok .z 1 the electric field at a distance of 1.0 m from the ntmwpzcg..7k o:fiv:1ucleus?

  What are the magnitude and direction of the electric field at txe::,zy,ux/t,v vrha distance of 1.50 m from axr,::ezux/ t,,tv y hv 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude a(2 -u nhz:rlirhn+z0 of the electric field at the location ofzhaz h(n- lrr0:2un+i the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction o-5kfzwm u 2i-w hak.0cf the ele. mc5h -iwk-20wk uafzctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the8v5f1gm /rxfx8 cdi x9 magnitude of the force experiencxi5 cg9vr8 f/fxm1xd 8ed by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dista-g *w- llj,;qo gr.cwance of 4.0 m. What is the electric field at a point midway betcrlj wow.-q*;,- l gagween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mtdj)1k 9pu/tcq0vin 5eter stick and a -4.0 mC charge is placed at the 50 cm mark. What isj n vit1c)5up0q/ ktd9 the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick af3z-cvh +yh rf:e a1)ind a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the el) +zyc -3aehvfh:1rf iectric field zero?

  Two point charges of +3.0 mC f7c6je/h lq:h8o; t;dr0bp oj and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betweeejd/l;hofr:7 t;pb 6 jqo8c0 hn them?

  Three 3.0 mC charges are at t38y oy dgxfre(,gr4,hhe three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric e(dyfg ry4x ,h83r,gofield at the center of the square.

  Consider a square which is ;hma d( .hh5yy1wsz0 k1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is;mz.0ws ahy (hd 5hky1 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 placed in a uniform electr b4k pqgx;ymah6vcvn)+x)-z .nav- -af5hjq1ic field. What is the magnitudvvh 6mb. aq a-v)cpkhjn1x5y-n4f+q z a)g;-x e of this electric field?

  A particle with a charge a 7u8hpm 5a8leof 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 6000 N/C poinynq+ fd5 zqt94ting downward. What cha5 yz9fqnt+ dq4rge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placeq-(;sr- ah2lf4e pw tad inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the el- e(;tq -awh sl2ar4pfectric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wha:rk- xwcb8o7a t is the magnitude of -ow8xr7ck a:b the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radiu6oe6 0aidg8w avx-1da s 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from thva 8 ew6ad o-x1dgia60e center of the sphere?