State the law of conservation of electric cha fpeu a-5q d(k.85ryamrge.

  Is it possible for two negative charges to attract each otheq7qm;t f.nk- x xoqf4:r?

  Is it possible for a pos gffe-16cdyn5itive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. yi ssxo ( xzgl4 um.s6 oui)p-*ua768r During the process the glass rod acquires a porum7.ou6 isog-u *xs()zxa6 l 8 spyi4sitive charge and the silk

  A proton carries a

  The model of the atom sho1b2caqbaj ;)uws a

  A neutral atom always rcuwcnjm+ 2+ 3has

  An atom has more elect+wwlhl:o .uisw8 h i5*rons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei a. yg auc2y6oq6re referred to a2a6gqy uyc o6.s

  Materials in which the electrons are bound very zwaffj6a0r// rtmu,c,)s 5 l yloosely to the nuclei and can move about freely within the material are referat,cw/z50fm )f ua6rys/l , jrred to as

  A negatively charged rod is brought near oneqh v *0wid x1r2apll,0 end of an uncharged metal bar. The end of the metal bar farthest from the charged ri0wla lq,0v1d2xp r*h od will be charged

  Sphere A carries a net positive ch 08ndxhq(8lh large, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire th(lx 8qld 0h8hnat is grounded. Which statement is correct?

  How can a negatively chc c55y:4h.xvr j4ipplarged rod charge an electroscope positively?

  An originally neutral eleck stpzg-rcvq /jkfu9g8:98(ztroscope is briefly touched with a positively charged glas/zg: qgur98 pzk-kt(8 v9jscf s rod. The electroscope

  An originally neutral electroscope is grounded briefly sz+yo 4o0f-a uwhile a positively charged glass rod is held near it. After the glass rod is removed, the electo0zf4+y a so-uroscope

  A positive object touches a neutral electroscope, and the leaves sepvyrq3y (82 ov,dsqye /arate. Then a negative object is brought near the electroscope, b2y/8(,ydqvy oq3r vesut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulat2sh (,r0 ft-n, lygko(v 7nfd5t6gpiced 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 forwasip6(k5 thogfcdfy2t0v( 7, lg-r ,nnrd, 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 cv y-,rop; d2df+ sel)oi6cc kqm 0+h7fonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger i9hll 93et+:ao lj d;xdn magnitude than the seco ltj:9ah+3l9ox;dlde nd charge.

  Sphere A carries a net charge and sphere B is neutral. They are mexvjc; so 0t6(0m q0mplaced near each other on an insulated table. Which statement best describes the e0tmq06 mx0e(vj s; ocmlectrostatic force between them?

  Two charged objects attrac*43ih g* z0otosru* 9dpqopk 9t each other with a certain force. If the charges on both objects are doubled with no changei40*p d zo q*tku 3pro9ogs*9h in separation, the force between them

  Two charges are sepa occnar*20v h2rated by a distance d and exert mutual attractive forces of F on2r0v 2hca* ocn each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects 4 novks )go2f/attract each other with a force F. What happens to the force between them if one charge is doubledf/v o2n4g)kso, 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 dis vd v 6,c0 oi8ifx,y/.,gsmri9znn4nttance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron v fi4 i, x nn rmt/9n8zy,isc6g0,od.vis placed next to the first electron?

  An electron and a proton are separated by a disuh:m22a dn- gmkq8wx /tance of 1.0 m. What happens to the magnitude of the force on the first electaw- h2u/ n gqm2:kmd8xron 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 happens to7qon:wnfg j lv*1j4dg5 l2w7o the size of the l w ofvnjjno1dw4:5gq g7* l27force 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 po.+tbc khy;d. l9 (z rewu/;bpa2lc1 swint 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 the net electrostatic force acting on the posr/;hcp b.yc eu d+abt2z9( swll; .kw1itive charge at the center of the square?

  A point charge of +Q is placbs 4lyrjp+22k5i5gqe 5ye4 hoed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.5eo4sq2ryj2 pe+5h4l 5 bgyki 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 :blr o( h/1vrvi1q4fl not a vector?

  At twice the distancezsc(f* t+r* mvd 1qu; splt(o1 from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and vj:xb;zdhnm4 v79 7bv positive charge alonvm7hnz;dvvj4bb x: 7 9g the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charqq kb19xoe q;f40vn5eges along the line joining qb4nk; qv qx0e1ef95 othe two charges?

  Electric field lines near psitive point charg5)*fxeidu vk/ vhu -i(es

  The electric field shoip5zlfb/gmu9 llz vu+ 8.43dw wn

  Can electric field lines intersw r 25 mkt-7mtodewmw q(y-99rect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform u k+6.s 5g1xsr )miu jvrcsdm 02(bq,oelectric field. Give a statement concerning the electric field in thebgrudx,k m)c sor( v1iq56s0uj2.ms + block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameter; ond6v6ydlro*3vnl* u 0je z/s are each given the same charge, the electric field (E) midway between the center an6 lvyn 3rz o/nl06deuvo*dj*;d the surface is

  A cubic block of aluminum rests on --x n k5ur 1,ioywsj7ta 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 top surfatyj5,xiornk -s7 -uw1ce?

  If a conductor is in electrostatic equilibrium near an electric chxugnqym3,gg7j*j8* z w4 0v fmarge

  A positive point charge is enclosed in a hollow metallic 3rs9x/)c evjo3w qbygj ) b9)nsphere that is grounded. As compared to the case without the hollow sphere, the electric field at a p9 3)wy9qxjvj)e bc srg 3n/b)ooint directly above the hollow sphere has

State three properties of condu,.sd*5oe cyu hctors in static equilibrium.

State Gauss's law.

  The charge carried by one e6 6 )gryskkd25xb3bvr mr4s)fg.vq(q lectron 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.nr4.92umu pa v How many more protons than electrons does this piece of plasticnmr9 pu42uva. have?

  What is the charge on 1 kg y3x7 v;xmb2 2tmqvj/ gof protons?

  An atomic nucleus has a char /zayqs, jo:fdy/y*b c.gh5 2jge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated7b2g )ic4bqn -wxvr7 l vq:9fr by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwrf xvqn)l:72v7i49- qb wgcrbeen them?

  A 1.0-C charge is 15 m from a second charge, and the force between themp g/sy,e 4)u-pin4eia is 1.0 N. What is ts,4eigpp -y niae4)u/he magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.nmv).6 hlasdg w-)do ;gwvjojq ),0 k(0 N. How far apart are they?

  The force between a f; e:zq t6t-zpt-oif6$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ape,5nz- tapm2wart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric -2ptwe, n 5amzforce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first kmykx 6x:6/d/ pye0q ncharge 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?md 0xy66xk //ynk:eqp

  Three point charges are placedtji ig9s3+g 7k 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 are the magnitude and direction of the electrostatic force which acts on the cgig tikj7s+93harge at the origin?

  Three point charges are located at the following positions: Q1 = 28qhm ) xhzoj0shmn14,(eg*wx .00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mw0*m1hx4(zo g)nmexjs 8hqh,C at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is a lam.c; d47ndplaced at the center of a square, 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 on the positive charge at the center. What is the magnitude of the forcenmc.4l7da a ;d 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 = -1.0 nC is at (0, 0.10 ( 5ntzei57b,1z l5vjeugspj5 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge?z( ej5 pstvbj1n5 z,5gil7ue5

  Q1 = 6.0 nC is at (0.30 gmly8n/5m6m7 l9cdylaiis*u9/ a cb-ut)qt2m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0) iycg5t27udqa m 99lamcsb uyl8/6n*)i/mlt- . 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 equilate*i3xu cxpz3, sral triangle which measures 30 cm ox3su *3, cxipzn 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, whitb8jrd8( sq( ldd.2mnch are separated by 3.0 m. At what point, on a line between the two charges, wo(tj qdrdsdn8 2( 8lb.muld 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 chatw8a;w(:zgb dy u-f;;3qwco zrge is at x = 4.0 m. Where on the x-axis can aqzzdg3- c(:bt 8;wuy;owf;aw third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origib2ref58ng . nun and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so th.82n ubn5ergf at the force on it is zero?

  A copper penny has a massa*qverdp)w3 ( 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 attraction7:),th ve,2 l dlhfdts of a fixed proton some distance above it. How far above the electron is the proton?lhd)tt self72 d,hv, :

  Two 0.20-g metal spheres are hung from a common point,tkl.h iga7+ c yw7h- p;cx5my by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thrh5gl+wi-x.chp7;ty 7, y kmc aeads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cha4briy hvin/r1xm3i+oeas 98, w 5bhr ,rge of +40e. What is the magnitude of the electric field at a distance onhr yw i 3m,5ab1srvir/49+x8 bhie ,of 1.0 m from the nucleus?

  What are the magnitude and direct9qty.5a h/xznh, vo/k ghgp19 ion of the electric field at a distance of 1.50 hhgx .5/,y 1/zhkna9q g9ot vpm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude omgh.pndz,j wqy xs1g.c430rz2c )h1 vf the electric field vxch,c0 g2mqdh3jgz )141 s.wn.rzyp at the location of the test charge?

  A 5.0-C charge is 10 m from8kuroc 38a r4/r5lwuh a small test charge. What is the direction of the electric ouwkr8arc rh4ul358 / field?

  A 5.0-C charge is 10 m from a small test chab ,x -us;5l0vanph:uorge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locat:l xsu p,5huo0-van;b ion of the test charge?

  Two point charges each have a val;;ip yzea75h* a6:vi ,jabubcue of 3.0 C and are separated by a distance of 4.0 m. What i; a bchuje,abi*5py6: z ;vai7s the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed acb r0k b,31lqyt 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 3qb,rbc0l 1ky cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick awcc xpdui g-tm6-i ;v8by2.2r nd a -4.0 mC charge is placed at the 50 cm citug- 2v-8i xm2 r;yd6p.cwbmark. 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 lg( cq nj5ilpq7 :um-1and x = 0.20 m. What c g7iq-lj(51mpq :n ulis the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50gg 4ynopf9d0-ygor9c 7 4axf9 m. The last corner is occupied by a -3.0 mC charge. Find the electric field atgcry-pg0y o49 9f7aonxg f4d 9 the center of the square.

  Consider a square which is 1.0 m -l hxq.*xxt+t 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); xx x*t -tq.lh+ +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 placed in a6cc-pg v2h0qf2 r uoa: fk1s6ot13 hap uniform electric field.c12oaffa -2r61ohc 06 p3vq:hupskgt What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a )qtoe fy k2)dl ph8uf7whu18ghbe 728 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 ftueu , );hp9s1ynav9y-7tux sield of 6000 N/C pointing downward. What charge must be placed on the ball for it to 7va 1u;9u-s seuypy9h x), nttbe suspended?

  A foam ball of mass 0.150 g carries a charge of -2-n2()rl b ky8wumigq2.00 nC. The ball is placed inside a uniform emib r82 2y-nkug)(lwqlectric 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. Wa es+dx :f5s/lhat is the magnitude of the elsd/ sflx:5e a+ectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electriqn 4c hvah z8ph7n9 qt1+h8ln(c field 6.0 cm from the center of tah1tqn +h n88hqc n( 4v9lh7zphe sphere?