State the law of conservation of electr0y+6l ,ey 2ff3ax)c,uao a akaic charge.

  Is it possible for two negative charges; e g1s hht78fi50pl6sfdlvv8 to attract each other?

  Is it possible for a positive and a negative charge tof8x:pkiql yh f 9j46e.v9pg z: attract each other?

  A glass rod is rubbed with a pie8o 0 3jgtb0qsoc1 myiu40ckcv1 ,k6gq ce of silk. During the process the glass rod acquires a positivscoobm q11cg0jqk0y0tivu8 ,g3k 4c6 e charge and the silk

  A proton carries a

  The model of the atom shows do 1( gvqz*8nja

  A neutral atom alway-g 66s me4(js-dksm d 80u4-l jrymyhas has

  An atom has more electron ym+5:g h*w2wwpvvw 3ns than protons. The atom is

  Materials in which the egfs2zuvaup)v- (v.jq) )n ps )lectrons are bound very tightly to the nuclei are referred to asn.uj-(sf)v u2a)vg )z)p qvp s

  Materials in which the electrons are bound very loosely to the nuclei at2,k v 9za -gsuf0+yfend can move about freely within tf,sk-g9e 2z+0t uyavf he material are referred to as

  A negatively charged rod is brought near one end ouast+z.xpgc,,d w- s uuq 4n4:f an uncharged metal bar. The endsxcn:t+4ug .pu-u d4a zq,w,s of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, n.u :g9xpa- jrf0wz.qand sphere B is neutral. They are placed near each other on an insulatqaf.-gnx:u .0pwzr9jed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge 4uadcksbff4 / ze:71)3 d zuqian electroscope positively?

  An originally neutral electroscope is briefly touched with a positivo8 ,y0 k:yw5ji ;/hwcq ykn2stely charged glass rod. The eh :/y8ji;,yqc2nty w0wo5 kkslectroscope

  An originally neutral electroscope is grounded briefly while a positively cha pnmn z c3zfvn:2(2z)krged glass rod is held near it. :22 cnp kf()z nmz3nvzAfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. *e*.r)oed/n 2 5:v xizgxsyit Then a negative object is brought near the electroscope, but does xri xyede 2)nov:*5z/it. g*s not touch it. What happens to the leaves?

  A large negatively charged oblx fs3f c(1oqyuc+51a ject 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 object. At no time does either ball touch the negative object. What is the final charge on each1cfu5 afosq( x3c y+l1 ball?

  Charge is

  What are the units of the Co0if(mx / ;twcfk gl:q-ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargeqrhvla (r n+:w(eh//2zp6q lc is larger in magnitude than the second pr/nerw hzq c(2hva/:+(ql 6lcharge.

  Sphere A carries a nbzhr*n p j1:.z,lskuh l(/1 jqet charge and sphere B is neutral. They are placed near each other on an insulated table. Which p bj r:j1 /sh z*(u1lhzn.kl,qstatement best describes the electrostatic force between them?

  Two charged objects attract eack nqy 8;8 o7yo/qqgq)6yqi0bd h other with a certain force. If the charges on both objects are doubled with no changeo/do7kiyqb; y8)0 qq8 g qn6qy in separation, the force between them

  Two charges are separated by a distance d 6orbhs6zh* -w-w a1n:nzpa 3n and exert mutual attractive forces of F on each other. If the charges are separated by a d w6-b1r-hza nzaho nn6w3*sp:istance of d/3, what are the new mutual forces?

  Two charged objects attract each other w7j4 y.s) oro;ko.dhg:fkh bm xf6nd.)ith a force F. What happens to the force between them if one cha.;fj.o. hmxb :)n47sgyrfokk)6hdd orge 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. +(p dbyw6j8b z4n *m9:omedyqWhat happens to the magnitude of the force on the proton if a second electron is placed ne8de:z+nqyym 96p mb*b wj 4o(dxt to the first electron?

  An electron and a protozx9f4 t5wj5gwg tv3(kn are separated by a distance of 1.0 m. What happens to the magnitud vgw5kjft3( 5gzxt9w4 e of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happen- x,qx iqrx9y)g2zm7hs to the si- q yxzgim,72xqhr9x)ze of the force on the proton 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 ej- hg1t8fp0ch 8favs( d8c x8point charge of -Q is placed at one ofvgfc xas8f81hh p-8j0t e 8d(c 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 net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placedp9v7q rw8,vfxq uzh./ at the centroid of an equilateral triangle. When a second chq9 wu7rxqf /pvzh8.,v arge 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 +Q placed at one of the other vertices?

  Which of the following is not a74jz37e*k n0( pa ffsu fd0k*alvbx:a vector?

  At twice the distance from a point charge,t 6tu+xm xt: lg:se(+u l-hrg6 the strength of the electric field

  Is it possible to have a zero elecyh,u0 knn;g , 5u/xikktric field value between a negative and positive charge alon/ink 5guu,yknk 0 ;,hxg the line joining the two charges?

  Is it possible to have a zeroq/d 1/yqsudf1p,+ 4p qwszd: r electric field value between two positive charges along the line zu1d+dd,4:psw f /pqqy /sr 1qjoining the two charges?

  Electric field lines near psitive point cha4d gor o rwxay ;+bms+mi;)9+orges

  The electric field shobzcj.bxnjyr.wor r aw 106 4p0r1p/6a wn

  Can electric field lines intersect in free sp 685d4le8m ty ,z (r7mwfk vtfgdh97snace?

  A solid block of metal in electrostatic equilibrium is placed in a uniformd7 / nju0cn5oa electric field. Give a statement concerning the electric onj7n/0 acud5 field in the block's interior.

  If a solid metal sphere and a hollow metal sb hdyecwn *2k34f1 n7jmsr 4qe9q1v(v phere of equal diameters are each given the same charge, the electric field (E) midway between the center and n97b*s 4nwyk31q4v1 dmejf(2hevqcr the surface is

  A cubic block of aluminum rests on a wooden tableh /y,tluo,ely8viqu n .w43f(,iz*i g in a region where a uniform electric field is directh.l 4,f(8l /,uugzw*, ionqiytve i3yed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargem j)weqi27kfy -j xst5a t-z1( d*fz,s

  A positive point charge ia9 amoh kgac)c)4 n4ukaj2- 8ys enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the holao8ak9y4 -)uck2a 4gh )ma cnjlow sphere has

State three properties of conductors in stati:a ui6;zk 3,txpjuf6 q1 cxc-cc equilibrium.

State Gauss's law.

  The charge carried by one elec8zrgizz ptu9;;s*x(7od2zc q -+bj agtron 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 chargezjl6 4*ptdi+j7 yv7k c of +2.00 mC. How many more protons than electrons does this piece of pl kyivzpj*6dtjl4 + 7c7astic have?

  What is the charge on 1 kg of proton8-ay owty.x8us?

  An atomic nucleus hasz a08b2c+5.jls kqxhkb5k +/fsm5kfq 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 and -4.0 mC, rxkm7rd,1zaq39 2ht xcespectively. Whk7tc3 92z1hr, daqxxm at is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between c-do +7l a2ukucbrmwwk0 (7 8mthem is 1.0 N. What is the magnit+k7 amd o2u8mbc( rwuw07l-ckude of the second charge?

  Two 1.0-C charges have a force between the tbmv(0ynrr /(m of 1.0 N. How far apart are they?

  The force between a g;l6rnzm ,a.tugh(9g gr+o 8o ;yc-rd$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expkq-k3tt;0 d9zi-yt -j6gz zyferience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweyqfiz3zk0 -gkt -zt9;dtyj-6 en them?

  Three identical point charges of 2.opx;+wq4pv c8 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 the origin+ v;p8wpq ocx4?

  Three point charges are placed on the x-axis. A chaa,l bd,1 a37wp/avlhrrge 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 and direction of the electrostatic force which acts on the charge at the or,7rv /a3 aw1d,a lbphligin?

  Three point charges are located at the following positions: Q1 9atv-mxd.bad5d )*t f = 2.00 mC at x = 1.00 m; Q2 = 3.00 mtd bdv9-.) af5xt*dmaC 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 secod)*py+i oh *itnd 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 third charge of -Q is placed d*ho* +iit)y pat the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0;e9,cvcah w q;, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the c;e av q,9cwh;magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -13vtuf g8lb (3o.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direlu3fo3v (g8 btction of the net force on the 5.0 nC charge?

  Three identical charges0 kardqrp0nr4x j 8w t+(zrt24hw.q.z of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of t an+qh.t 4rqrxpt 20jr4(0z.k8w zrdwhe electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are setok 98s ))hrqiparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q t8krq)oi9 sh)such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and nhj9gq*i:h i9a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a nj:q99 ii ghh*third charge be placed so the net force on it is zero?

  Charge +2q is placed at the originq+5 aeggj--ylrd9ekh9 jk4w6 and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zed +694-a59 jjeqweh-ky rgklgro?

  A copper penny has a ksnzsr,(m+ jz,1;e ed;s-klmvvyo 2f841o jfmass 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 against the force of gravity by the attraction of aisl a67vwblq(vj 2 7x: fixed proton 7v2lqixjab(sv w 7l6:some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a c8o) a89yfpbxtd-as.dz)c i5 vbp i8fiu+7f w5ommon point by nonconducting threads which are 30 cm long. Both are givf8 .8t 5 i7ocvsi8azfb9iud yd5pf)b+ )xpa-wen identical charges, and the electrostatic 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 of +40e. What is the magnitude of the eleca-3 8g0g-f) otn 0j4bsqsihumtric field at a distansafg4bu0-038gsh-)to jqnimce of 1.0 m from the nucleus?

  What are the magnitude and direction of the elevvw o;wdx1 5tcv z:(-ectric field at a distance of 1.50 m from a5 ew:vdv vx;(z co1-wt 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the )k6fjlsz/+ p ur6(j nmvhe7s (electric s upm6 jkrn)/z7e(j6v +flh s(field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of ;u iumeh/)ln(the electnl iu(h;e/)mu ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f0-+dqm0jj hc, j n9bidorce experienced by a 1.0 nC charge placed at th-n9d j00bj q,+himdj ce location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dista2j +bid:g 9cubnce of 4.0 m. What is the electrig u9bd+:c2ijbc field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti q :kb;wrha8c8ck and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field atrc8 q:ah w8kb; the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cha) e8yk,mp/tnc rge is placed at the 50 cm mark. At what point on a ck)et8 mn/p y,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 =va/ kt heb63z sy04a.kc ykc0* 0 and x = 0.20 m. What is the magnitude of the electric fy 3c.zec0hs4va 60kyt /*kabk ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sid5 - qnvrn28uf;v.o:knxda.ai e 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at :-8v2 vxrq.5a.n aunnfk;d oi the center of the square.

  Consider a square which is 1.0 m o0p5xfe f) s1 ln8q7zv)7ye lzmn 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 electricxzp7 eyz5 0mf)l)qvln8e17s f 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 ewa9 z2;aj+iboa3jlv5 lectric field. What iswjal 9+b3vji 5aaoz;2 the magnitude of this electric field?

  A particle with a charge of 4.0 m 5pjfy9rj: 8(suv oah )wr-sm.C 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 6g1 i3t- :olsah000 N/C pointing downward3st hlgo- i:1a. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ove+t3 -o +cugwf -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are t 3 +cweot+vg-uhe magnitude and direction of the electric field?

  A metal sphere of radius 1 6d* /eu a*t4m,fysr( na9wlhi0 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sw 9afdi6 m*/*lua4y r sneht,(urface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the el 38xrh5kpvw ;lwa- n.ebdl1;bectric fielw3p 5- h;1xvrekllb.b8d ;anwd 6.0 cm from the center of the sphere?