State the law of conservation of elect z:.hdn 93exzl bp0j/aric charge.

  Is it possible for two negative charges ti* wrdgb:t s /tvw:c,:.ggz ,yo attract each other?

  Is it possible for a pmbzy g,) , wau2xovlwza)o;28ositive and a negative charge to attract each other?

  A glass rod is rubbed 5dk-9v /9as bjfd:axzmg/so 0with a piece of silk. During the process the glass rod acquires a positive charge and the sfkd9mjbgxao:/ v9 -s5s da/z 0ilk

  A proton carries a

  The model of the atom shv2q tk4ayf2+/z5ieo z2og lg,ows a

  A neutral atom alwayqhd,9zkt9:r) odhi u:s has

  An atom has more electrons than protons. The a* b *boo*ooc hwdu; cu4h.)e+vtom is

  Materials in which the electrons are6e4j tlmq;* py bound very tightly to the nuclei are referred tomt4 eyjlq 6*p; as

  Materials in which the electrons are bound very loosely to the nuq;dfp -qn- dz-clei and can move about freely within the material are referred -dd-;f-qz n qpto as

  A negatively charged rod is brought near one end ofgp8jp3n+4qotg 7h b:e an uncharged metal bar. The end of the metal bar farthest from the charged rg78 poh tg:eqj3+bp 4nod will be charged

  Sphere A carries a net positive charge, and sphere B isylfr-yw; dzbh 5(8rrd 3i9:as neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is gy bldi5(3r r9s8ya-hdwz; fr:rounded. Which statement is correct?

  How can a negatively charged rodbiv0fj0gfa c 76dqd86 charge an electroscope positively?

  An originally neutral electroscope is briefly tou+va,m/xti 8ge ched with a positively charged glasm,ta8 g/v e+xis rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positisjn kw j,exb;h --qn3us 7i56tvely charged gib-jk ;enux6h5-jwq7s, 3 st nlass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, a(+5jq 0n9,)zbyp qwx f:kc cydnd the leaves separate. Then a negative object is broughz j:+ kq)d ycbx 0pnwf(q59,yct near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chapvxc+ u29ye (xrged object 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 +vcxe9 ( pu2yxrolls 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 thex8nefl2 b b,s( Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firstrajc;li a0,rl s :v/u0t +el,u charge is larger in magnitude than the second charuaeciuvllr:as,/+tl;, j 0 r0 ge.

  Sphere A carries a net aowdj /p4 -af- cba-+hcharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement bes ap-h4-woaj fd+c b/a-t describes the electrostatic force between them?

  Two charged objects attract each other with a certain fx-+ymgh-k(,1p d zsl morce. If the charges on both objects are doubled with k( yxg zd,shlp-m +1m-no change in separation, the force between them

  Two charges are separated by a distancrp ,*bkk (a)ige d and exert mutual attractive forces of F on each ot i,(r*b)gkka pher. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wtej:ohrppshckr4r 8u)f0 e8 iu.,/3 y ith a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separatiu8 fi / ep.):erk0ushr3j 4tro8phcy ,on 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 mh+eu *q29czm. What happens to the magnitude of the force on the proton ifq *9zu e+cmh2m a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tucjo 7xw0 k*4rvorj41.0iuvj o the magnitude of the force on the first electron if a secw.i* 4o oj7uvxj1v4r0ukrj c0ond electron is placed next to the proton?

  An electron and a proton are separated by a distance ofon+i sb75p7bg 1.0 m. What happens to the size of the force on the proton if the electronob7p b75+gins is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center +y781 /kay cbwvc-q1jqia- sgof a square. When a second point charge of -Q is placed at one a c/v icq 1718y-jbwaysk+gq- 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 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. o7jb yr bp f4t870sp)7siamsriangle. When a second charge of +Q is placed at one of the triangle's veb7irbt0pfj sy.7 4)7sosm pa 8rtices, 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 a f l m;i55syq-w/wgvy1a+/bl b vector?

  At twice the distance from a point chargeltk m5m. m*(vm, the strength of the electric field

  Is it possible to have a zero electric fied9) itw ;fyg87 3i+ ei2wzexsbld value between a negative and positive charge along the line joining t+2wf9e;z)s3 tiid 7g8ibwyxe he two charges?

  Is it possible to have a zero electric field value between two posihh9h 6z 8d2ga4 ike nvsw6c 2l1ej)cs*tive charges along th h i1kehl v96h)24acwj*8cen gzs2d s6e line joining the two charges?

  Electric field lines near psitive point char1xt ;2j8 xlotqges

  The electric field shown +yluhx) cm1 7,nah.w1 - wvh6n5bhgdi

  Can electric field lines int)qry2.n.9qw 2ofid s j0kx:dtersect in free space?

  A solid block of metag) x s7:ua(svul in electrostatic equilibrium is placed in a uniform electr: suu(s ga7x)vic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere )f9rf 8bpe5ot 8oq1mqtiu5v 0of equal diameters are each given the same charge, the ele58v5p80 r9b ofutit1qfm )eoqctric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform eluii u gzpzoa):0v62v- 5h*lsnectric field is directed straight upward. What can be said concerning the charge on the bu5glzzpv)i h2invo6a su-*0: lock's top surface?

  If a conductor is in electrn36 qwcqm o2 fs;.;0j kj1(v-rjthqskostatic equilibrium near an electric charge

  A positive point charge is enclosedezlg*m 1-7y yh in a hollow metallic sphere that is grounded. As compared tg-he m*1ylzy 7o the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statm 0rl d ny.cgfyo)w8(+ic equilibrium.

State Gauss's law.

  The charge carried by one elf xy/.a33h f17uucm/ ku7taccectron 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. How many more proy4ldu -m-0ie7cwf 0zrtons than electrons doz0 cd -w-r7i0yf4uelmes this piece of plastic have?

  What is the charge on 1 kg of prm03-aaigo1 r cp7j-p273o 9qz hr odijotons?

  An atomic nucleus has aasd)(s3rxw02kq wo.+ mact7a 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,xab*qnq6jko/ c11 ia p3t, gbnn,3fj1 respecnx/, ,tfbagqaj*p 6kcnn1 1b q3j 1o3itively. 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 between them is 6z)btsz,p70ak g+ld c1.0 N. Wha bt+dsa) lk ,c6p70gzzt is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far c) fexdl *b/2wapart are they?

  The force between a a0x8q,m wwm(iqclf5s5;m 5fy$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N fo2c 5mq,exk, yj 4j /0m-weiwkrrce. If they are moved to a new separation of 8.0 cm, what is tkem w0xrcq52/4 , jk-wie,mjyhe electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis4gt)icblp+ ppu 5 x7/p. The first charge is at the origin, the second to the right at x = 50 cm, and the 4p /x7ui+clpgp) t pb5third 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 uc2i2jw81 j dgare placed 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 ajg2c8ju id 21wt 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: qib , hgq)rnnf+,;-ub Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Whninuhqq,+ fbg ;)-,rb at 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 secon 1kyw l560km nihb1*sfy,ns 5ld 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 positiv *n5ilh,51wsnl syk k6m0byf1e 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 m, 0); Q2 =6kgpcq *gi;-gw w.7 qb -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fori *wk -.cqb6gp qg;w7gce 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 nC 6/ 5ammwv, w:wljyaf8is at (0,mvymw/a58:laj 6 wwf , 0). What 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 of an wf91 ).qqqlm yequilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts o. lqqqmw9f) y1n any one of the charges?

  Consider point charges of +Q and +4Q, which are separated bwej bck8bvb2aiw7:2+y 3.0 m. At what point, eibb2 jva2:7 +wcw 8kbon 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 zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whe;ew0 4eg9im vovyr 1n9re on the x-axis can a third charge be placed so the ;m yv1engerv 9oi 4w09net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cuq fj, xv829sxan a third positive charge +q be placed so that the xuxv f9j,2s 8qforce on it is zero?

  A copper penny has a mass of 3.0 /lpis*dcc,uz, 4-to / s5cn4 9oezwpi 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 ogz5:6p1 hg62 qq 7t ax8qz.s zf6ahsgzf a fixed proton some distance above it. How far above the electron is the proton8q7a6sf6h5 shzzag pq: x1z.z6tgq g2?

  Two 0.20-g metal spheres are hung from a commoqz h+w7.x uyxi020lnen point by nonconducting threads which are 30 cm long. Both aweyh 7l.i+q 0nx0ux2z re given 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 3 5pv49(idqr.q2gw4uf:adnl2zqzijw)yh b 8 of the electric field at a distance of 1. )w q4b9qvd8fur a(2l4. z:jgp3 2qhzdn5yiwi0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dista9ch/ d5dhej g:/-yg b5ui ;xhqnce of 1.50 m from a 50ig -9hce h5qbdh;j/yxu:/ d5g.0-nC charge?

  A 5.0-C charge is 10 m 2gx)lp,nh s l/from a small test charge. What is the magnitude of the electric field at the location ofnp2 lx,/)lhsg the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is+x yjvhqh1,l* the direction of the electric fihjv *+l hqxy1,eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude jt/ p(m ba)e+xof the force experienced by a 1.0 nC charge placed at the location of the test(abe+mjpt x/ ) charge?

  Two point charges each have a mc nk5egq f4(f8d649nf u+p (lhd4joo value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between thk+ foe(d f6 cn4f4 g4h u8nld(o9p5jmqe two charges?

  A 5.0-mC charge is plac1 8s*up9 qtkused at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Whatq1k u9stsp*u 8 is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 2fwl,wesa j 1s.; m2jvcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm ma ,fs1;wsaje.w l2 2mvjrk. 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 op)c; rjzz4 hb3rw2s 5are placed at x = 0 and x = 0.20 m. What is the magnitude of the electr2hr pszzr5j);bw4o c3ic field at the point midway between them?

  Three 3.0 mC charges are at the t5 o0yowyi ;er/:9je1sju gfg 2hree corners of a square of side 0.50 m. The lau/:w 91sgyj y oojgr ;2fi50eest corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl ck5k/spzq- -s c6hv(laced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (kc (/v-h6s-cz5lqksp1, 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 ogdci:v8+7 s qjplu),a charge of 5.0 mC when it is placed in a uniform electrqs : 7p8,ovdc+ il)ujgic field. What is the magnitude of this electric field?

  A particle with a charge ok:/. vtbf0qk-4 xxdhe ho-rs )vvbr42 f 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 eccvzz50z c,c: z 41j4yn64psh d,uzaalectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?pu cz546y 44z:szjn0 cz,a ,vhc zc1ad

  A foam ball of mass 0.150 g carries a charge oqh.g h 6dikuu4-1rb 4rf -2.00 nC. The ball is placed inside a uniform elect-d4ri.hq uk4uh1 6bg rric field, and 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 charge of +2.0 mC. What is the m -8gb goce *7hq1*s5d k3n2qihc1dv sfd.yvz 7agnitude of the electric fioh-3b8 egdc vnq*5 1zh*gdik.yv s72f7sq1c deld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a ce80cpopj1a:d 4 poy a+harge of 3.0 mC. What is the electric fie p+4:jeyc oad08opa 1pld 6.0 cm from the center of the sphere?