State the law of conse 1mslz oph5v pno1jm) +;bx4q6rvation of electric charge.

  Is it possible for two negative charges to attract each othei-/(m38 r z9w4 ad/lkzfft smir?

  Is it possible for a positutnm /ces at(sf,; *5tive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the processc00 c;js 4mnozdy+t6f the glass rod acquires06ydstfc+4;cmz0jo n a positive charge and the silk

  A proton carries a

  The model of the atom shd.xw 0bf : vpg.ck6k;p/0v7pew y9itc2 idzp/ows a

  A neutral atom alwaygao/0 go4or6 sw gahqpe 3;4h0s has

  An atom has more electronbr g8 zfhwb61g 8*, anxy.h/crlkr;;ks than protons. The atom is

  Materials in which the electrons are bound* ;/l90+eq hu8ztet 9eloa.bi5fb9 nnlq1hg g very tightly to the nuclei are referred 9/o *59fbt;8qggu nh.heq tl0 e1iz+l bna9elto as

  Materials in which the electrons are bound very loosely to tx *s8a45cv4qxic j: nthe nuclei and can move about f4c8xt s4 5i: a*vxqjncreely within the material are referred to as

  A negatively charged rod is brought near one end of an unchargedvy-a-cbu 1/aareha+- metal bar. The end of the metal bar farthest from the charged rod avr+ay1u cbh -e-/-aa will be charged

  Sphere A carries a net positive charge, and sphere B is +gv+ ozefyfk-hu81d23h pi 5yneutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounph5z3-d v1fuio2++hgky8efyded. Which statement is correct?

  How can a negatively charged rod charge qxm0hw;1+1b(hfndfyan electroscope positively?

  An originally neutral electroscope ip9oqs).o8kue lqro/dm ldj80+ r( +c fs briefly touched with a positively charged glass rod.l col/ 8)+krj90m+ q.qdou8f(pod sre The electroscope

  An originally neutral electroscope is grounded briefly while a posit*cgx-e/9nal0 6a/(lm tph fkj ively charged glass rod is held near it. After the glass rpcg*h xnm/jlal-(/e a09f k 6tod is removed, the electroscope

  A positive object touches a neutral electroscope, annm,ha2;aix ckfu7o wm0(bn(5d the leaves separate. Then a negative object is brought near the electroscope, bw;0 m a con,abknu7 (im(fh5x2ut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins;kjyw -22u/ gpkcc(de ulated table. A neutral metallic ball rolls straigh22yc g-pkdkuw(/ cj ;et 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 of3n.2*qokui lu the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancef:ah: 1 ro9ems d. The first charge is larger in magnitude than theo:s:afe91rmh second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed kxvy6+m/ 8b8nru8)wamzp4x 2 .vgtd qnear each other on an insulated table. nxva b2 g)x u8ptwr .m4+qyzm6/dkv88 Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If thj7bzi jqe e1g,z:d0 s2e charges on both objects are doubled with no change in separa:d27j, qe bz gsjz0i1etion, the force between them

  Two charges are separated by a distance d and exc rubly7b)x ud.yx2jo b7),e3ert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the ne byojb77xc )b2e)yru l3,x.udw mutual forces?

  Two charged objects attract each other with a forcektzq+xzn f l+a a/;4fz-0jvgb4g27 b m F. What happens to the force between them if one charge is douzl/ gbkjfa 2mgaft+-4z 4;07bqz n+xvbled, 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 oac5wwsug0) 15xzyl06gb 0 sief 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the firslw6xsebc5wa y05 1uzsg ) g0i0t electron?

  An electron and a proton are separated bycj/m+8j2vmwze/5;;lpbt6 t sk z gcc: a distance of 1.0 m. What happens to the magnitude of the force on the first electron b+l;ge; vsc2/5m8z : p/zm k6ctt jcjwif a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of s9jvk 9(pbjv0,0k zh jui9n1z 1.0 m. What happens to the size of tv9uk pj 0jk, 1n0zvjs9 h(b9izhe 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 oflvu ui)-oo10e8bb:rk a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force ou-ebvklr0o1 8b: )uoif 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 placedk 2ejk -9t)une3e qo309oaz4ogp(mc r 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 4.0 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 onekcpn m2)eo9ug-k (te0o43q roze j39a of the other vertices?

  Which of the following is noqa 1 drwueh3442l 2bvnt a vector?

  At twice the distance eeynm.:y v 4z6from a point charge, the strength of the electric field

  Is it possible to have a zero electric fiefj7i2ed ki 6)ald value between a negative and positive charge along the line joining the two charges2)7djifk6a ei?

  Is it possible to have a zero zo/m xr o,v*dpq1+/ +qj g 2kbxfqjm:cb- 2b)gelectric field value between two positive charges avx 2bgj:2jo/r)/qm1 f*+qbq bmpc- kdz ,+oxglong the line joining the two charges?

  Electric field lines neajrm (9 c/r; q3umknkt8r psitive point charges

  The electric field show aaa 54d vh k)lmxr.b,t;dn( 4oix.t+pn

  Can electric field lines intersect in free spnvjv s+6 thsl+6ju njj7; (4kqace?

  A solid block of metal in electrostatic equilibrium is place(o;qil ak6 d2do 7crl9n9ub(bd in a uniform electric field. Give a statementl kb7a(n ;dl cou(q9r9i 6do2b concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphehylwj/e:bu e7;2iz*w) s-aai re of equal diameters are each given the same charge, the electriczej;7lh: y*i /aui sb2w)e -wa field (E) midway between the center and the surface is

  A cubic block of aluminum rests onxr0m,fbjwb/ o6i n*7w a wooden table in a region where a uniform electric field is directed straight upward. x w wb bm*r/7njio06f,What can be said concerning the charge on the block's top surface?

  If a conductor is in z6zyp6akq j/szc2 /1 oelectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spht 3zyx8uygqss-)o, , (2 nsh ol4nrdc:ere that is grounded. As compared to the cnogczs,ds4yqoyl ru8):(3s-,t 2 hxnase without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condfrh;ida xv7w*2 8p 5sfuctors in static equilibrium.

State Gauss's law.

  The charge carried by one electro+pyrs(f x vc..-pan6 yn 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 ol7 *:h3pl2mexz:w-n qgj h(tif +2.00 mC. How many more protons than electrons does this pilhmxhzqjn:wtg*3 l-(2p e: 7i ece of plastic have?

  What is the charge on 1 kg of procj/-6ssnuw3 btons?

  An atomic nucleus has a chafcij;v8y ( th15 tvn3l- le)e ihkw1o0rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatedwy: o2:tdhc .a by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnit::2dc h.yo tawude of the electric force between them?

  A 1.0-C charge is 15 m from7-(j dio7 zshcl*ac 7o a second charge, and the force between them is 1.0 N. What is the magnitudoc-az 7h(lj7o cs 7id*e of the second charge?

  Two 1.0-C charges have a force b)om pky epy2un.h0p (0etween them of 1.0 N. How far apart are they?

  The force between a n6)8ft7 h2zf fe lv,gb$30 \; mC$ 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 3bfebo) +r fs*ys 1/ywforce. If they are moved to a new separation of 8.0 cm, what is the electric force betweefb1)/*y f e soyb+3rwsn them?

  Three identical point charges of 2.0 pody* ga7md)r)l 6 j+dmC 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 chargdo6)pm) djl7ag* +rdy e at the origin?

  Three point charges are placed on the x-axis. A charge of +2yd*/ 9ffl)6pe ;a8v scv,ax. fqni.bp.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 electrostatiafp cldi.fs6/8va . p 9qfx;e byv,)n*c force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x :09a2vx7jkyff zgtv 1ac l vp:10l y5y= 1.00 m; Q2 = 3.00 mC at x =aa2 7v zxtvy0 yc1:fklvfp1 y:5gj9l0 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 place6caqrtdxa i (kks4r l5(m(kc fl-obh* l (55,zd 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 force that acts on the center charge if a third charge of -Q is placed at the lower-left cornera rr,c(l*cflb(hxa4k m k-( ql(k6o5d5 s5it z?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = tp4;w ,zzd1j: 3abuhx5.0 nC is at (0, 0;u1zz3 ,wb:t d paj4hx). What is the magnitude 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 at (0, 0.10 m); Q3 = 5.0 nC is g rsito-o a sf(,88.gqat (0, 0). What is the direction of the net force on the 5.0 ogi.,8r g8f - q(stsaonC charge?

  Three identical charges*1 vm(su,fy +p; sol1 rjcpq3m 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 the electrostatic force which acts on any oneuosvj1y13 sl+ qfm,(crm *;pp of the charges?

  Consider point charges of 72,chbgi zh iglepvr8f5 :.8k+Q and +4Q, which are separated by 3.0 m. At what point, z lcfi:ge5hb28 8,pik7 rgvh.on 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 ori yi6ki0x5ueuv+ 6o d y-m*ddt7gin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed +6t *imyke7idy0d -x5uudo v6so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plac/h-hbb89,0dxf rzkvu z4vu x:ed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zer: ufzhr 4b-/xvbvz809,hkdxuo?

  A copper penny has ax6:(c dxt .bqzb.n(hi (c btq4 mass 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 gr r4dbp7t b1+r6 gm+oqsqe8wd-avity by the attraction of a fixed proton7qep 1r mgd-dq6brwo st+48b + some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comm w.8z rfj+8,f nnkpak8juja94nez-v j1 jl3) zon point by nonconducting threads which are 30 cm long. Both are given identical charges, and tn) 3jjrvn+,zkpkn8wf 1a.9 8jz- j4zau8l fjehe 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 ce rcip, q(s;3,+zkaa tharge of +40e. What is the magnitude of the electric field at a distance of 1.0sck( p;3 e+i,,zar qta m from the nucleus?

  What are the magnitude and direction ofb yl2xey45f4yt/q41 lufqnn * the electric field at a distance of 1.50 m from a 50.0-byy5q4nf *lxtqn y4ef2l4 1/unC charge?

  A 5.0-C charge is 10 m from a smv.0x4/pfxkgjg-g ;bh all test charge. What is the magnitude of the electric field at the locatio ;bkj hv-xpg/4. g0fxgn of the test charge?

  A 5.0-C charge is 10 m,0mxo hnvg0*mmg8j3 v from a small test charge. What is the direction of the electric fiel0n mj0v m3*ovm,hx8 ggd?

  A 5.0-C charge is 10 m from a smal.ke. kftrzst/ l,65r dl test charge. What is the magnitude of the force experienced by fdk/.r etk z6tr.5,sla 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of2v4cvbhk7 5paj t355jot c*cq 3.0 C and are separated by a distance of 4.0 m. What is the electri ktjbvc c 5j2ph57o5 3cv*qa4tc field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg(syo- auw 4 fyc zh5z *p-rr9w-zd3ea1e is placed at the -w-yare(a15wczyzu9 4hzdp *f3 osr- 50 cm mark. 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 and a -4.0 mC chqhuk)4x9j+lbq /h- u; 3 hmyzmarge is placed at the 50 cm mark. At what point on a line joining the two charges is the electrbh4 3 mhqh/ku xy- ljz9mq+;)uic field zero?

  Two point charges of +3.0 mC and -7.0 mC ar2 p07sxdv:ia2b 8+npq m2w bage placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bet7:i0psbm2g q8 2xd2 bvaawn+p ween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The r *iqb/k9fd67 e q/2mc wcx;eylast corner is 62;/qe /c 7w bqeik*fxmcd yr9occupied 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 placed at the 3 q8axzs1p+qm corners of the squar 831 +zaxmsqpqe 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 center?

  A force of 10 N acts on a o:e8,rkjv ;mt charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric ;v8r: eo mjkt,field?

  A particle with a charge of 4.0 mC has a ma+f5tvjj 8 md;*t dni:css 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 6000 z9u 1up2/aolz*79(dptzzqg rx0 7usl N/C pointing downward. Wh/lpua1q g09l79(zd2 zxr uzz ou*t ps7at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.sy0b6foneb32 1enqt 7 kxxpj(f6 ,y ut26 su(l150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is sus(( kny6ssj 326 xteq1o26xynft fbuu,le7p0b pended 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 mayi) 2pzrxob. y8/b /t2ro 6mfbgnitude b .oz2 6fb)y8/xt m2yorbp/riof the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius gqpi g2-qlfbu-:)p8xqsv +z1c +ru; d 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from thec)+gufgbp:;-xs + drp- 2ql8u1qvzi q center of the sphere?