State the law of conservation of electric chargm n d/2cyu0ve shpp/6*e.

  Is it possible for two negative chac/w3hxcysd wgj+s:28 y .vc-s 35irw mrges to attract each other?

  Is it possible for a posit f pgk.csfk/)*ive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silkp6kbnaq2t) + n. During the process the glass rod acquires a positive charge an)+b 2npn6qkt ad the silk

  A proton carries a

  The model of the atom showc:ntam:msaq 8/ k k9s9,ej+y ts a

  A neutral atom always x8zlv8b4e (af;mw7 cdhas

  An atom has more electrons thk9k7qsnuj h7kn jbjob-1 9d0 *u+c)itan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referrrn:*o6)h*a jkf idv* ued tru*hvf on*6*k i :a)djo as

  Materials in which the electrons are bound very loosely to the nuclei and0sohn1i;xter6. rd m4ov7r.d can move about freely within trxsr7 d 1t4inoomh6.;rv0. de he material are referred to as

  A negatively charged rod is brought near one end of an u 0)n tthrxr 3wz,5a6bc sq/w*sncharged metal bar. The end zht),*wa w6sr/rb53qnsc x0 t of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are zrtq(x:c dw- j2h*;dp8qj3kz placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is-:kqh2(p;z3wcjz * xj r8q dtd correct?

  How can a negatively charged rod c),ltaec.8vowr;bp5 iharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charerc58 0x zeie f5 9x.v2d+bxqiged glass rod. The elr5 q.z f 5vx9b8ixxc+ed20eieectroscope

  An originally neutral electrox41 1gzv gqwp(w z7fr,scope is grounded briefly while a positively charged glass rod is held near it. After the gzwv1(w71, qgzrfx g4p lass rod is removed, the electroscope

  A positive object touches a neutral electroscope, a;uf+vu.ts c1e9 6mocund the leaves separate. Then a negative object is brought near the electroscope, btc.6fc+ su9ovm 1eu u;ut does not touch it. What happens to the leaves?

  A large negatively charged obfb uk/33jn4k 3yttd-jject is placed on an insulated table. A neutral metallic ball rollsn/3433jyfkjdk tub -t 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Cokjuy/,x 4z4zgulomb constant $k$, which appears in Coulomb's law?

  Two charged objects a4anzge0s xp(,mi) 3bot y(, dpre separated by a distance d. The first charge is larger in magnitude than the sec3sgpm p, tbei0( z)4o xnday(,ond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearn;d ml0sd8tdp 5sij+9 each other on an insulated table.5d 8djslpt90 n;m+sd i Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cha j4r9l0-lgv5wygomk) m 9z/q mrges on both objects ag) m9j9rq45 mvm l wz/okgly0-re doubled with no change in separation, the force between them

  Two charges are separated by a disxpi;mti xa4ihd1e,o/ey0pjb ::jd 9;tance d and exert mutual attractive forces of F on each other. d;;:i 0t hd4ip/exje bjm9io y:px1, a If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attracteiyvx;1f6 t d8 3:bqukqsmr,1 each other 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 red6emxrq1:3qby d, 1;si8kvtu fuced 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(h*09htq i51f i nexmu. What happens to the magnitude of the force on the proton if a second electron is placed next q (f0xnmet9 i1h*u5hito the first electron?

  An electron and a proton are separated by a distance of 1.q6os)hb:;3vg m+uu 3t u.hucr 0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nextu6:+;bmtuvuhso 3c r.)g uhq3 to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wh f im(nvu)cr6np6y0p6 at happens to the size of the force on the proton 6r6 pmuciy0nv(fp6 )n if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second u;d, b)xjh)i5wass w3point 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, idea;d )x )u5i, jssb3hwwntical 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 equilateral triangle. Whenjr-hj 75k3ly j a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forceh r37j5-l kjyj 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 not a v(z t b-j:qcntze1 e0+sector?

  At twice the distance from a point charge, the strength of t/dpg1rkxgtv)l w3i8:he electric field

  Is it possible to have a zero sii 4tl )nsc0+9khwy4st)2 i1 ,mko )poetq-felectric field value between a negative and positive charge along the line joining the two ch e+sh)to4 )kiinoi-wpfq,tls14t92 sym ck)0arges?

  Is it possible to have a zero electric field value between two ipmck.5cl1(r- b9ptj positive charges along the linb- m9rcclk5i j p(p1t.e joining the two charges?

  Electric field lines near psitive pjo. l-c*s6tw:ju0 ml aoint charges

  The electric field shown k-ms 11hdjxic9je j+4

  Can electric field lines intersect in -plx mjiy98oa i k8t*5free space?

  A solid block of metal in electrostatic equilibktxjv75 i/ + ; rgxfg9;3pwhhbrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiorvhxjp/7tw +9;3hxb; kggf 5ri.

  If a solid metal sphere and a hdjnw-x egwc60-.g +dkollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between twk g c.gxnd-e 0d-wj6+he center and the surface is

  A cubic block of aluminum rv.-jz ox (jlw*(2+ s tyu:pojtests on a wooden table in a region where a uniform electric field is directed straight upward. What c (-x jps(tvo:.2zjy *owtul +jan be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electricd ke)clif3q1c,)y4 tu1/ w 8xchao-zx charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounde,cj35buxgt.8j;rqz .z n8 eytd. As compared to the case without the hollow sphere, the electric field at a point d.ty.zqb z3n tj8jec ;,g5r8 uxirectly above the hollow sphere has

State three properties of 6yl) orx/f)i6 nydlzi;1cj3r conductors in static equilibrium.

State Gauss's law.

  The charge carried by w7fm*3feh rajs b 17d: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 chargetnx.xkj( h -y:iy gdtv r h4/1jqtd.h43 2:ntb of +2.00 mC. How many more protons than electrons does this piece of pla dd-t qrtg3xjnjh:n itt414(y 2vh.k by.x:h/stic have?

  What is the charge on 1 kg of p iuj7s(-y,rupol-b4e rotons?

  An atomic nucleus hahe*vk5xh99xm9n n;2sgxin h.s 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 values of 2.0 rckbjxqf4 *h vds75(2and -4.0 mC, rej2cv(kdqfs h*7r5x 4bspectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwecdb8 c.a6j+7 3z xgnteen them is 1.0 N. What is the magnitude of tac37+ .6b cjegzd nt8xhe second charge?

  Two 1.0-C charges ha,v z-1 omgc ;ljvjq39bve a force between them of 1.0 N. How far apart are they?

  The force between a jia)ug8n+ +tz$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exmzlx *cow,k8( perience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force bexc 8(zlokmw *,tween them?

  Three identical point charges *khb 9+0gyv,)zfw r xcof 2.0 mC are placed 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 the0+xvh 9wkzc fy*b)g r, origin?

  Three point charges are placel/usb37rjf q1d;z)o2ve ;pbl ;dc 6 lcd on the 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 arcp/l )6l7;lj2 d cbb;;3 r1svezuodfqe 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 )/xfb- q*uts) kj(mulc.6 oa b= 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 thetq 6/ja umlb.uf( bx)s-k)*oc force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poi9vuz3f+b vah kl249kg bt /j ff50cil;nt 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 actff9 zij4+ cfvt92llbuah30bk;g/5 kvs 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 ismhux *+k .4osl0ilezs 3)o lu8 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forck*4u0z3o ohlxlesmi ls)+ .8ue 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); Q3d7k :a ,7ep whh7gk fh9fc:ql/ = 5.0 nC is at (0, 0). Whahlh h:qdk/,779e7 f cfpgk:aw t is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofo 5 wdmib2tq/: an equilateral t w/bom2 t5d:iqriangle 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 separated by 3.0 m. Atp ;r;zopz:l) q what point, on a line between the two charges, wouldqzo)r ;p;pl:z 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 +9.0-C cx +go fof+wfk,qgh* +0 5xlg4wharge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero5hxq04 fgfoglw o+w k+g+*,xf?

  Charge +2q is placed at the origin and charge -q is placrae;1-c- sltlgc2 ; yey98 luged at x = 2a. Where can a third positive charge +q be placed so that the force o2 9c;l - luey;asgcy -1r8legtn it is zero?

  A copper penny has a mass of 3.0 g. A t1a;g jmz6gx(rotal 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 upsnwi ;b9og: b1qye.zlfw2oe*6xxh q1: qbo+1 against the force of gravity by the attraction of a fixed proton some distance ab2.owoifb9z:qe+ nsxglqy11xo w:1 b* ; eqh6 bove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by det. yo ns;n-7nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the sde7oy.-tn ; nthreads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of , b.i b4ta8zxey2oixiy dq 8wkn -8.9zthe electric field at a distance of 1.0 m from the nucleus?w.4-noie ,z. 8axi q8 bi8zk9 xydbyt2

  What are the magnitude and direction of the electric field at a dist9um9d5meui 9v ance of 1.50 m from a 50.0-nC charg mvu9ud9m 59iee?

  A 5.0-C charge is 10 m from a small test 3ha;(4q6 q)ecniimv ocharge. What is the magnitude of the electric field at the location of the tesqmv6hi i3e4q oca(n);t charge?

  A 5.0-C charge is 10 m from hmure:ng p eqw3)(+1;owf ay4( r9 jeia small test charge. What is the direction of the electric fai+rw 1(njh eugf ;yp)qo3:9r4 mewe(ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit89 bik*ry gy)hude of the force experienced by a 1.0 nCb8hr)i gy9*yk charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 nm 84(.sronxm C and are separated by a distance of 4.0 m. What is the electr(mx4osm. nr 8nic field at a point midway between the two charges?

  A 5.0-mC charge is placed at the ,0h9hrob xhw 4 z,ij ,tw-5iqv0 cm mark of a meter stick and a -4.0 mC charge is plb ,wh0w o9v,hjz i,r4hqx-it 5aced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plac cr /(2je+iy6t.idl cqed at the 0 cm mark of a meter stick and a -4.0 mC charge is plac + y26retdc.(l/jiiq ced at the 50 cm mark. At what 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)+s 3pibf;rfb . What is the magnitude of the electric fielr3s +fip;bf)b d at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 mc- 2/ d-6rhdafcx n7op. The la7f hn 6x2doc- d/r-pcast corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.08smslz0 :eeovg1n*fl. g ku2; 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 the magnitude of the electric field at the square's c oseeukflg. * ;lmsv0:g1zn82enter?

  A force of 10 N acts on a charge of 5.0 m+30q ma3n4wqksbfxx 8k6 hq w/gn8)xb C when it is placed in a uniform electric field. What is the magnitude of this f m 086 nkhk4 3 nw)b8sqxxqqba3+/wxgelectric field?

  A particle with a charge of 4.0 mC has/nop.gv ; syn1 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 anwd5 ndcb ad(g0++ci g: electric field of 6000 N/C pointing downward.:dnd wgc+ dbc g(5ai0+ What charge 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. Thfg( lkga; 7uqa ai*,+ne ball is placed inside a uniform electric field, and is suspendeda;fi+7 a, * alnugg(qk 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 of +2.0 mC. What is the maf6 r/0jz3i dingnitude of the electric field 5.0 cm fi/idzf0j rn36 rom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is ta)cd)+ uzme. m5 mowo8he electric field 6.0 cm from thwom+.zcu 5)m8)eo dame center of the sphere?