State the law of conservation of electric cbt*up) k k1)7)oyljgkharge.

  Is it possible for two negative chargeku; zih+dxs 5s:/x 1s;sv p7gks to attract each other?

  Is it possible for a positive and a negative charge 7vv9s5y:3ttpao(iih x0j+ xs to attract each other?

  A glass rod is rubbed with a piece of hm71pwt px,-lsilk. During the process the glass rod acquires a pw 1pxm lp,7ht-ositive charge and the silk

  A proton carries a

  The model of the atom showvo cgg7d 5;i2as a

  A neutral atom always ha+3s6tmam3bk yp,fz 0pm1ka* r s

  An atom has more electrons vv8s54(( :kd owpdp flthan protons. The atom is

  Materials in which the electrons are bound very tightly to the nu5).tbp5b:zcxa a5p o sclei are referred topx5a.p 5tzcabs) o :b5 as

  Materials in which the electrons are bound very loosely ucm:1i5ro 3rlsrtb4jvtrs1v ;19z o7to the nuclei and can move about freely within the material are io brvsvtjr so 173 cl:149urt;z1r5 mreferred to as

  A negatively charged rod is 2 r4s9nqy,cik brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be char4s nrc ,k2qy9iged

  Sphere A carries a net positive charge, and sphere B is neutral. They7a zd5u go n*qy3v7 umpg:ax;1 are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundeaxnopq g7au d;71u: 5g3vyz*m d. Which statement is correct?

  How can a negatively chargedl 7tin6t) tj*2ltzuq, rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pos*h2 ,s4mhcmu kitively charged glass 4h2mu,scmkh *rod. The electroscope

  An originally neutral electroscope is gr5.3 2fcb 9sm 5lcc8ksxdn.vphounded briefly while a positively charged glass rod is held near it. After the glass rod isfh5b89nc .l3csv5m 2sk .cx dp removed, the electroscope

  A positive object touches a n659p/ mfp (x jwql7ohxeutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but lpwx9pj q5/mfh7xo( 6does not touch it. What happens to the leaves?

  A large negatively chaqpn igg89ez v;tt5h,4rged 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 rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forw5e;tnqp89 t vz,4g higard, 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 Cou 8v6 f,i(qbinklomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i9rl/a8 mopgp- s larger in magnitude than the second charlp-rmog/pa 98 ge.

  Sphere A carries a net charge and spherzk(lu4yjo 33; s :gdsse B is neutral. They are placed near each other on an insulated table. Whichk:sg z3u43ls j(dos ;y statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If c*c5 +dl wnqhnt1pq)f 5t6yx3spns39 the charges on both objects are doubled with no change in separation, the force betw35ct6hnqnp5wy3* s1clq)d s9 n+ pf xteen them

  Two charges are separated bybl2 in 9c7)evbq 7vyy9e+ va7yrnf*r; a distance d and exert mutual attractive forces of F on each other. If the cha c9 y7velb+ye2rnv vi;q7br )7*9nfy arges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happf-) bs*.ikxo*8ftc:y)c lhi 4sa gv,zi; fp1 vens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centespfho*.v ;i, 8scv:)1c )yatk xfb*z g-ifi4l rs is reduced to one-fourth its original value? The force is now equal to

  An electron and a protozw9b6fah.76 unhdiy yk:; z(q n are separated by a distance of 1.0 m. What happens to the magnitude of the foq9nz y u6y h(h6i db;a.z7kwf:rce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distanr. jx///dxicace of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the dx /rc/i/x. ajproton?

  An electron and a proton are separated by a distance of 1.0 m. What 9f8c)* mrodun happens to the size of theo *8r9ufm )dcn 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 sqd (lfteo0w(lr-p d;j -7 h4mituare. When a second point charge of -Q is placed at one of the square's corners, it is ob-7 rll;e0hdfwdtm t-(pj oi(4 served 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 equi sstutv ,dmp)p i*(6)wlateral triangle. When a (w6mtpuvpsid ,s)* t) second charge 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 followinggiu 5+7a4pw sq is not a vector?

  At twice the distance from a point charge, the strength of-9obl9 5yi m4cw)ubogw /yh5b the electric field

  Is it possible to have a ze0- hi67svs7 bk4gdz6:uoiwq2o 9n 5asqhd wu( ro electric field value between a negative and positive charge along the line joining the two cqos7 0- 2k:h(9 zwunoaw 56vuhib7ddg is4q6 sharges?

  Is it possible to have a zero electric field value between two positive chargeo .92swuxy*9ig7+uqwx9zx /k 8 f toees + xzuf9e/wtqkguo8 *x2ys7.w9 oi 9exalong the line joining the two charges?

  Electric field lines nearw:s7c/ .r s dsik hb8l/uhrl0; psitive point charges

  The electric field shown kig sk,u7: )cwaia. q5

  Can electric field lines intersect in free spnt8y)/ v ta8szace?

  A solid block of metal in electrostatic equilibrium is placed in a un28z;8p(ndwup cp, plcb4pi- ydog7)biform electric field. Give a statement concerning the p8yiz p(4pdu8pwc2 ,codn)-bl b 7; gpelectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphe4k0;:i2zksd wj.qoj are of equal diameters are each given the same charge, the electric field :dq.akwz 20 sjj4;o ki(E) midway between the center and the surface is

  A cubic block of alu pd9z gxi.b-3kminum rests on a wooden table in a region where a uniform electric field is di.dg9bz-x3 pk irected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ,ri 2kd+w9d/tg0tvuxelectric charge

  A positive point charge (rne6q acz/,gis 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 abo/er,( nzg6ac qve the hollow sphere has

State three properti q;-muuc apaei..a8w1es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electc -b8 l kdksz3qz+-yb0ron 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 mC9eg* irc9d, no. How many more protons than electrons does thisg,odr*ei9 c n9 piece of plastic have?

  What is the charge on 1 kg of prot6hjc0n sqessa7 rk;)5ons?

  An atomic nucleus hax tk769yw0dilzqlh c* 2y7ot9s 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 valh(5u/sodupgt 2,w/jhv*loh 0.ke , gmues of 2.0 and -4.0 mC, respectively. hvwdu s,g* j(go20hlp /o,5ht/ .umekWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second md yu9jz5g/urj wwmu:-2 */xy charge, and the force between them is 1.0 N. What is the magnitude of the second chargejr :2 xwd -zu5/uw/9mjgm uy*y?

  Two 1.0-C charges have a force between them of 1.nhxjr 53n0xe 86i9qei0 N. How far apart are they?

  The force between a vy- pm :v-ymbz3 x5(qd$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencmya:n x9 pn8).lwd2u se a 1.0-N force. If they are moved to a new separation of 8.0 ). 8:mn9 ulxwnysd2apcm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed onjrs77) mmo3jt 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 cs7o)7m r mjjt3m mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC m:k, 3moe,69x 0wovio,ufjzdrxw p- - is placed at the origin, -2.0 m C to the right at x = 5rei,6 3vzmdo, op,k- u:x-w0 o9mjxwf0 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 origin?

  Three point charges are located at thrj74; x4owmmy) 6f)sm ybr 1am4v;byte following positions: 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. Wh1 y4xb4m;w4 tmmbj 6)oryrm s7v) afy;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, andszy;trszj- 4 3) jywc+ 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 forw -;3tys+ycr4z z)j jsce 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.jp phoqpbzz(*c97o0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnip7bpj. qo 9(o 0*hczzptude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is atlhxv4j(wvc: . c4wro( (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is theovw:w(cvlc( r jh4x4 . 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 equilat1jojx: arqj bd.e539h eral triangle which measures 30 cm on a side. What is oj 3.jah rxjed:1b 95qthe magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by )*thp8kxmi1v3.0 m. At what point, on1kt i ph*xm)v8 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-pdem7l6z q w *+(wpua/C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed* epw l( z67u/d+ampqw so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wh0 exe sxc9lxuy ax6-*:m g9)viere can a gv yxic6x-mea:s990l )xxu e*third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total )p8/mtsa q 5ubof $4.0 \times 10^{12} \; electrons$ 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 aeo ,cs:xx3m *vgainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proto: x*, mcev3soxn?

  Two 0.20-g metal spheres are hung from a common point by06wy2v5hjfy*nr8d(baf.tte nonconducting threads whic wy6bhat8n(jrd f*y 2v5et0.fh are 30 cm long. Both are 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 of tw*m pahx4*amdik/1u 4 he electric field at a distance o**iap h1muxw dk /4ma4f 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dis0x+ 8 of3chvmskbu3t2q/yx/ ntance of 1.50 m from a 50.0-nC charge?8q+0 of 2h3cvxmbs yx3 nukt//

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude9vt7t1 m x:6vw tmre+ge c,p(i of the electric field at the location v+ig : mer(tptt197mwvec,6xof the test charge?

  A 5.0-C charge is 10 m from a small test chpmr 2-y r9,yujarge. What is the direction of the em- rjr,2uyp9 ylectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of 9u0.f2 t3rlfijs9zmgthe force experienced by a 1.0 nC charge placed at 9ifrg.2l3 f t9j 0zumsthe location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance o9e4 m uqrty3;crx28bsf 4.0 m. What is the electric field at a point midway between 2b 8;te rq4m 9sruyxc3the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a met7:rexct7yg32l0:nrg so y i2e er stick and a -4.0 mC charge is placed at the 50 cm martge:inx2ls rc: y 0r7goye372k. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anecrbr3pf1:ayf 41 r f27eaq.pd a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charg 7c1.eby4:1f ar23qfafrr p pees is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at c w)oh bdqc-x;4 9v4s;dv:nkm x = 0 and x = 0.20 m. What is t4 xw hdm9 b:vc c4)-vqdonk;s;he magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are atge(q1 ml6nb mn-+h-;t jvlca . the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at t+-caqmg-6mlvhtnj 1. lb n(;ehe center of the square.

  Consider a square which is 1.0 m on a side. Charg.. nb db7976 x seki v.opfb8iu yw(uo0z4tr(ces 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, zxip dubvys ob0.b7(ico7 .w(e6n fr 9tku. 840); -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 a unif26 kd;.s cyxxzv; e7yjorm electric field. What iv.s;2x;cd ex 6zkj7yys the magnitude of this electric field?

  A particle with a charge of 4.0 mC hp 4bzbt33n-auas 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 inud / lilay l)9)qqk8p0 an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to /l)8ikylqu)9q a0pl dbe suspended?

  A foam ball of mass 0.150 g carriesu go3l2m;5aj c a charge of -2.00 nC. The ball is placed inside g cu2ja;35oml a uniform electric 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 l:lwjf-s: eb3kmha/ : carries a charge of +2.0 mC. What is the magnitude o -/:m:3s:aw kjef lhblf the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 c0 dne u+uq2+rs *ya z4-,nf ngsp8/ow 8zmp0xwm carries a charge of 3.0 mC. What is the electric field 6.0 cm fp afw+udm-8uxr+ zsqsn4n* 0w8gyzo 0n,2/pe rom the center of the sphere?