State the law of conservation of electric ci3+y9xl g*ubzharge.

  Is it possible for two negative charges to attrmx7 wb9h n(de7ua+y6a9w8 byfact each other?

  Is it possible for a positive and a negative charge to attract+pvx9 b*-bxxm each other?

  A glass rod is rubbed with a piece of silk. Durvf )afgddw s1,p4 iqu23ssw* /ing the process the glass rod acquires a positive chp1 sf 2u*) a/wswgvs3q4ifdd, arge and the silk

  A proton carries a

  The model of the atom sho5py5o:7x 4;wrf;m wwzi 3w1oo(wdzhows a

  A neutral atom alway( h.jbe,y -rfos has

  An atom has more electrons than protonsc-i(k yw641fkmx 4kzo3 i n 5 fzsjn*k7j8s/jt. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refer ys*/m+y)nchn red nyh/c*s + ny)mto as

  Materials in which the electro0r3(x ic1h nzi zkzv/u, ic/8wns are bound very loosely to the nuclei and can move about freely within the m3zw r/xkic z n i0(1,ihcz/v8uaterial are referred to as

  A negatively charged rod isbg7 knmoy7 syb)(+ k0e brought near one end of an uncharged metal bar. The end of the metal bar farthest from the cmekksy 0()o7 ngby+7b harged rod will be charged

  Sphere A carries a net positive charge, a0 s-7v2qel gubnd sphere B is neutral. They are placed near each other on an insulated t0g uslqve -72bable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargeq 5h6nv,+ v ki ejam46yq:vbzyv07.wk an electroscope positively?

  An originally neutral electroscope is briefly touched with a positive isopo; 1dppvi(; u69a:gb x2xly charged o xgp;a;vdo2ix: 916b(s upipglass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivel *vnu36yvsfff 7ibspk) ;li85y charged glass rod is held near it. After the glass r6 8fvbk*uynsi) fpfi;3l s75vod is removed, the electroscope

  A positive object touches a neutral electroscope, and5j;of rm9pcrz7ezc:: the leaves separate. Then a negative object is brought near the electroscope, but does not7 c5:rf:mj e z;ozprc9 touch it. What happens to the leaves?

  A large negatively charged object is placed oh-rhc.w duahx + zvrf,5.p8a*n 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 each ball?+8px h.f*- ,vrdu hz5arhc.wa

  Charge is

  What are the units of the jmo t2 (t/kgy4Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by :ra7b9c)rt1bp;jl zwae 3jo 9a distance d. The first charge is larger in magnitude than the second ar9a)bec3lo ; : p9 t1rj7jbzwcharge.

  Sphere A carries a net charge and sphere B is neutral. They are pl. po:3nlomrbh45ruv y)zec 30aced near each other on an insulated table. Which statement best describes the:lhb)5me3o0z43yrnuv. copr electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges oisj.2h4fk 2c63qr4 lr h8reqk n both objects are doubled with no change in separk4.sre2i32hq fck4r6 lq 8hrjation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fb unfje2yd bt:/39nj jri*5g,orces of F on each otn:ybb2f39,trgn5j jed / i*ju her. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wha +kw 4jmpr7adb; 3yd:at happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their ce4m:a; pd yd7a3 r+wjbknters 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. Wha. i.b1 f8xaeuf/xyzx6 t happens to the magnitude of the force on the proton .xfyx1af 6b/8ziu e. xif a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. qdo6+b eg cl*,e2*jlbWhat happens to the magnitude of the force o*c*6bb, lj2eedl g+ qon the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated vksd) ufdn(mk58s +n2.+jytu by a distance of 1.0 m. What happens to the size ojdmdys(.tfu )nvksu28 k+n+ 5f the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed n+ ewmu6ks 6 19zqa0tkat the center of 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 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 uk +qa61n6 me0kwt 9zsof 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 p u86n cs;:ar7e2qbvqllb( i p4laced 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 forn46sq b 7bcr8lu;(2eivlapq: ce 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 v9edh2 bjx, (ptector?

  At twice the distanch* dd 6bsj7j gh,d:t.be from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative andl+f+ )jj5 aory positive chargeo yajjl+r)f+5 along the line joining the two charges?

  Is it possible to have azs9gr,ter p 72zu(cv/ zero electric field value between two positive charges along the line joining the two chart(9ps,ueczzv gr7/ 2rges?

  Electric field linesw-ln: ju, ig8d near psitive point charges

  The electric field s8(jy snd9cvn8z v+)dwhown

  Can electric field lines intersect in free .2mtin+tu4 e(q6 q/k wvn 218hdk vfmvnc+4cdspace?

  A solid block of metal in electrostatic equilibrium is placed in a uniforfnomly 0 -gh9eetq 2)3m electric fie0gf n y-h 9e3l)qmoet2ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diaueh(,j d:(wp8n(dcyoajn) v (meters are each given the same charge, the el8u d yc:njv (hwa,ne(d((ojp) ectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a :/vpfnbu50fo region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's topfu vo5fp:0bn/ surface?

  If a conductor is in electrostatic equilibrium near an electric charg9k 2.kt d;3al*u uitxge

  A positive point charge is enclosed in a hollow metallic sphere that is grou- bcrje y:cmx7p))1yc nded. As compared to the case without the hollow sphere, the electric field at a point directly rx:beyjcm-cy1) pc)7above the hollow sphere has

State three properties of cond v; (m;ow-yw zwf0t;ayuctors in static equilibrium.

State Gauss's law.

  The charge carried by one elecl);cv.ffvz t9 tron 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 m;sxd c.rqkh h+zep+6)any more protons than electr +6pdes) h +qkz.rchx;ons does this piece of plastic have?

  What is the charge on 1 kg of xn5ztr 2cle th-2;4bcrg4tzn v0)z/wprotons?

  An atomic nucleus has a chargek:0x-huy l 8of 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, havei p 8v 4o0sa8t4lu9zqs charge values of 2.0 and -4.0 mC, respectivelu44tvzpo li9as8s80 q y. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the f -rvd+l fnft0ky6:6bx orce between them is 1.0 N. What is the magnitude of the second char+df0tfynlv6b:6x k-rge?

  Two 1.0-C charges have a force between them o3t(a+,s.ccc4qyx a zs f 1.0 N. How far apart are they?

  The force between a p*mni74djaat d t tl mk*88woj-28 dh2$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencexqhy; zm ( zwdig /)j+l201 gda1s3vrr a 1.0-N force. If they are moved to a new separation of 8.0 zwgv1/sm13jlqd2hrid yx+0; ( gr a)zcm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on th baq6(ddfx;1be 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 originxqbad6;bd f( 1?

  Three point charges are placed on th5r6 qrx;o cop,v4 n-/aot8ogk e 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 electrosta -v 8a,oop ot; r46qcgkoxr5/ntic force which acts on the charge at the origin?

  Three point charges are located ar pt u ,v+;9vvboav0j2t the 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.+v2jbrv ; op,0avtv9u00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centerj uuhh/.ko7h92:eg-b dzz86f suq j2g of a square, and a second point charge of -Q is placed 2j2u.8 hgfk-/h :eubz sg o7hujz6qd9at 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nCwquclwg;2v8l2x,z gel)2 l,p xny olr +c85/u is at (0, 0). ,n cvl)+;l5rw8o2z u2xl2,quxgl p8w/gcel y 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,lo*4 ucaj:.twjxq5el0 ;yvf0 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chel40l5jy ;tf 0j:u.*xv ow aqcarge?

  Three identical charges of 3.0 2ruie43c ibeowu 2 *2gmC 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 one of the chargi2iue2*go3c b2ruw4 ees?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. m (u(8calr1jg hsw;w, At what point, on a line between 8(s,rwa ; lmc1wj(uh gthe 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-C1loy1ss et+ 4y charge is at x = 4.0 m. Where on the x-axis can a third charge be ple+ss4lyy o1 1taced so the net force on it is zero?

  Charge +2q is placed at the origin and charge sa8 c6suz-n 7m gsf;6(iz wjx5-q is placed at x = 2a. Where can a third pzj zs8 xn5-6 c ms7aws(fui;6gositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tog:bkixfwi0:d-9 m7wa-x- xtdoy, s )v tal 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 attracti l+gw z(mebn 2ep1( a06bye-(q)uafbgon of a fixed proton some distance above it. Howla+e6 m2 0)u(wbz(pygbbeq a-e1fng ( far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point byjbit9p;3 sybq /wr9s 7bev. f. nonconducting threads which.qwb.9bj;teb/v7 pf 9 i srs3y 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 the:/ifcxz,1;jy:h- s7 -nfkp hlhri.hu electric field at a distance of 1.0 m from tjl yn;ip/1fuc7-f:hh,-h:zk rs hi. xhe nucleus?

  What are the magnitude and di udhx +ud(.ig.rection of the electric field at a distance of 1.50 m from a 50.0-gdd (h. uxu.i+nC charge?

  A 5.0-C charge is 10 m from a small test charge. What s-qe7a;vafq9wqb va 8-i 0pc;is the magnitude of the electric field at the location of th7a0fav-9 ai;qpew8b s v ;qqc-e test charge?

  A 5.0-C charge is 10 m from a sv7 potnj o3 7-s bgylrq*r+8 s-mdnd80mall test charge. What is the direction of the electri+oysjoq8-r m7b 8rt nn07sdg3pl*d v-c field?

  A 5.0-C charge is 10 m from a scyakq3 , qb6j7oufq;/mall test charge. What is the magnitude of the force experienced by a 1.0 nC charge plf,ku;7 3 j bayq6/qcoqaced at the location of the test charge?

  Two point charges each have a value of 3.0 Cbxgu27bf jsyn;)ax )2 and are separated by a distance of 4.0 m. What is the electric fie);gs7ju n2) bxbf2 yxald 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 -4.0,8w njyyht /ue+ 4xdfdx54qj8au3:f(q9p p ao mC charge is placed at the 50 cm mark. What is th(/dqj4eonu ywjpxt8p4 3x+9hduffy:aa, q 58e electric field at the 30 cm mark?

  A 5.0-mC charge is pl *d p4tpy1e+lru.b fl4aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. 4rf.ldt p u*1 p+4lybe 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 p(ob : egjo(9su4g 3qlti0ykg m8h6g6y9w1s uolaced at x = 0 and x = 0.20 m. Whayt(g9(gy4gg81h9jk6bsswlm o30 q6 ue:u ooit is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners* fh tq jl.4j2bgp5pa7 of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center oq b.pahl 2j 7gp*fjt45f the square.

  Consider a square which is 1.0 m on a side. Chsv+q;5ubd qs5arges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1 sbs5; 5d+quvq); +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 i jv )v5ztwh/4kb6 )ntqeyh3,z s placed in a uniform electric t,zk)wnjbzh6 q/)y4v v et h35field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has aapw ) 1ccv4so7:n-- vszy2sqi 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(, 1ssv:o sr*kbf8jfb 6000 N/C pointing downward. What chargeor1(*sj:k v fs,bsf 8b must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries7ofeu/. 8;fmtncbe:4tcw.8l f m kf-w a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspenmuf-mwb. tfc./flnw; 7:8ote8f4c ekded 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 mam i9(zqizp4)ftq nf+pnt/ )(vgnitude of the electric field 5.0 cm n4tnv)9/ q zfp(( )mpiziqt f+from the sphere's surface?

  A metal sphere of radius 2.s9ihyctc 6u) 1e q-7ib0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from theic1) eb-su6qi h yc97t center of the sphere?