State the law of conservation 6gy,3zlwpo:f0zfjr ecn +j91xmgl 0w469n scof electric charge.

  Is it possible for two negative charges to attract each other?:h tgqas8; ciq5z:z2q1 aczu 7

  Is it possible for a positive and a negative charge to attract eaca0c9 n e,r l1v2pj),*daut mdxh other?

  A glass rod is rubbed withgqpszf6xnjv6 2:. /qv a piece of silk. During the process the glass rod acsnvz2q6/qjx. fpg:v 6quires a positive charge and the silk

  A proton carries a

  The model of the atom s+ 0rfyct xdbmjbffeyq ,8.08kg1g1 1 shows a

  A neutral atom always -4gs:pnni5 pcmp 0i 3qhas

  An atom has more electri1pnfe 2can1*e lcub+hg7j:*ons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei areo9 -1x+dt j* munakan1 referre -akx9noadnj 1mt+1u*d to as

  Materials in which the electrons are bound very loosely to the bavdn mvl1 +552mfcza+0r jg ;vb94aonuclei and can mom 2 0m 5gcva1d;a bvfa5lo+4vbj+ r9znve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar x3 qxgo;z92ixzuqw2 2. The end of the metal bar farthest from the chwi9x q2;z3o g2zxxu 2qarged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tve3ozvwb02:al hy92 mhey are placed near each other on an insulat9b0o3vyh2z 2lw: eamv ed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electsdp0 nthbt)6j0shz1jim;t8 c6lj13k roscope positively?

  An originally neutral ey *r2dm,nz4 b sa;9anrlectroscope is briefly touched with a positively charged gas zny9n*bmdr4; 2ar, lass rod. The electroscope

  An originally neutral electroscope is grounddpx 53t 5riezisy +i-hi7n3 ;bed briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elecyi nxt+s3 z;3h ib-i55d7rpei troscope

  A positive object touches a neutral eq +; hnfp:4oz-bqs 8sy 90r:2mo wqozslectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What haos;ro8 by 4pq0 +om:zq:hnfq-w 9szs 2ppens to the leaves?

  A large negatively charghoet9,pw3w * k :yyv9izp:-xled 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 w izep-v :k ,xwl*o:thyy39p9rolls 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 the Coulomb consf.(v;mlyfy eg 7(m9oa tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanc1i++ifb0r ub yq dke*/e d. The first charge is larger in magnitude than the second rf++u by qe1kd*bi/ i0charge.

  Sphere A carries a net cha knvj7 lzyu snj: /z04q-85mjarge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?:n8jz/0 a47l njkvy sjmqz5-u

  Two charged objects attract each other with a certain force.ogecq6m(o) -op2p +ax If the charges on both objects are doubled with no change in separatic2 -oo (ppqoe+ m6xa)gon, the force between them

  Two charges are separatedynwzbu(xh6d6(ww(w /v 3 o7j10su yy q by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new muu( 1(bnyu wy7j6wqv /w0 6yxwsd(zo3htual forces?

  Two charged objects attract each other with a force F.,:vznd;k5ta e,fv 0 cg What happens to the force between them if one charge is doubled, the other charge is tripl:5e;,vkv ,d gzfnca0t ed, 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 byzfdcryio*5 p ijeu94:8; dh0 s a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electrf*os4iuizpedj;9 rc 8y0d5: hon is placed next to the first electron?

  An electron and a proton are separated by a distance of 94kj 9nrvn)hw3/ensxb6s;z o 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plachn x96or4 z bj39wksvens; n/)ed next to the proton?

  An electron and a proton are separated by a distanceag)f +n240tjof) sk zp of 1.0 m. What happens to the size of the force on the pr a2ffn4j )+pts) 0zkgooton 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 se wd9xi-zvfftk; 7hab+v; j/:s cond 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 of the square. What is the magnitude of the net electrostatic force acting on the positive cfi7vw;j/z +;xb :dfkhst9- va harge at the center of the square?

  A point charge of +Q is plaa f- t(b-67uj8yjmg k/gmau1zced at the centroid of an equilateral triangle. When a second charge of mzt6 -yjamg/ j-18fk7g uba (u+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 following is not )p5x2zei/ qxn40n )k .zetpp shd7 b:wa vector?

  At twice the distance from a point charge, the strength of the elecwv)h 5ft 99bye 4n+m:i.bgv :yhbnd, ttric field

  Is it possible to have a zero electric field value biue *af/ d9dg/etween a negative and positive chargeg u/ie9a*d fd/ along the line joining the two charges?

  Is it possible to have a zero electric field value betwee ampww 1ldsf pl8h1 ame/3f.4*n two positive charges along lda p8w 4amfhslm311w* f. pe/the line joining the two charges?

  Electric field lines ne4qp0.kh 91r6asw g-fs5oazp l ar psitive point charges

  The electric field shown97,lsc ;8 jh9xqqb hjv

  Can electric field lines hoa3y8gog )s:ti:d -qintersect in free space?

  A solid block of metal in electroorg30u3t n9 2so0bh bjstatic equilibrium is placed in a uniform electric field. Give a statement concerning the elect u3g2r9s3o 0to0hn bbjric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters he5r1 x)h,-s*kln uojare each given the same charge, the electric field (E) midway between the center andxh )ok5n1-u,lh *srej the surface is

  A cubic block of aluminum rests on a wooden table in a regl 1fkj 3 r(jyzt3x.k,lmz7 xp:ion where a uniform electric field is directed straight upward. What can be said concerning the charge on the blocj ymkxp.k1zl3r xt(fz7 3:l, jk's top surface?

  If a conductor is in electrostatic equilibrium near an electric cha eif ymt,-bcir5-d ,)dhm:y i;rge

  A positive point charge is enclosed in a hollow metallic sphere th:mubi9si-w / sao(e dgvo-k13g )ce9tat is grounded. As compared to the case without the hollow sp3)9 -u -iivd (atbmse1ce9ko:sg/gwo here, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibd d oymw7r/th0)1zd8g rium.

State Gauss's law.

  The charge carried by one elez,m:o kv/eh9 ossn:z5 ctron 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 mC3sw* l+.i s-vwy/ b 7jjzplr9*7v mxaw. How many more protons than electrons w*vx 39j7i sjy /lb*7-pvmwwl+z. rsa does this piece of plastic have?

  What is the charge on 1 kg of ps0o7.phk/) kx8l ennjrotons?

  An atomic nucleus has a c+b4o)7 uajh0k0 r)im tud spk7harge 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.soufp3 w0r *agxf u4p81s*3)lqx kn;c 0 and -4.0 mC, respectively. What is the magnitude of the elecfsu u0ng3 x);3*pk*cplx f 4wrq8o1satric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1pj:ve-t n/+(fj bzoq-.0 N. What is the magnitude of the secon:eo --/jqzpbj(nftv+ d charge?

  Two 1.0-C charges have a force bet3d-gt3xix0 wb ween them of 1.0 N. How far apart are they?

  The force between a h.zs.i+o2ql h$30 \; mC$ 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- 9yr5bb4d376e w:t4e f xyv3kbnm ek9us4f *jmN force. If they are moved to a new separation of 8.0 cm, what isj47 3kyefvyn 5 sx3dk6 mf 49m*r:bteb 4bweu9 the electric force between them?

  Three identical point charges of 2.0 mC are placed on the z:swxheb -2lb0+(y ca x-axis. The first charge is at the origin, (lex cb2haz0bws- :y +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?

  Three point charges are placed on the x-axis. A char uiz nmznb+ -0*u t u5aht;a*-7-qarfnge 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. W t iz --a ;+7*zmautq0n*f5hrubn-unahat 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: Q1 = pf 3hyjc: yqq6h th0,-2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What i3qjthy h-fqy ,0: 6hpcs 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 second poikmwkk9 gul:9 ie7, ai se)9hm;nt 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 gka ;9,s9 wmm7 ki:liehu )9kelower-left corner?

  Q1 = 6.0 nC is at (0.30 mht;u7 +ctrbrvh90bp- 6nop2fy91g uz, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC cha n; uvo6+cp uypfhbt70r99t g2-h1zbrrge?

  Q1 = 6.0 nC is at (0.30 m, ;u 6d25u swrs zk2vdy/0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forkw2u5drd/z sv2;y su6ce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices m*x 0q6hncoc4, ffi1d of an equilateral triangle whiod4icqfn,f1mhx c06 * ch measures 30 cm on 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, which are separated by 3.0 m. Atiw+xyw7umh:t l ewt0f4*b4 0c what point, on a line between the two charges, would it be possible to place a charge off7: cw0mb4t4xw0lyi+ h e tuw* -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the j9 pp(jo0ck0w origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so jc00ppwok (9jthe net force on it is zero?

  Charge +2q is placed at the origin and ch()ft idbgl (0chnzew;k/*ge. 1 8pbv sarge -q is placed at x = 2a. Where can a t/c t gzwe( bngb(1f.kil* h0)p8ds;evhird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tyklbr6ie xdf4 , df80u6.bym 2otal 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 tq9 elg9*j8hmlc :e.sghe force of gravity by the attraction of a fixed proton some di*lel m9q8h9.gsg ecj :stance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduct,h1kwze49m+acmd8i9 z o aux/ing threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them a41i9hmwe,kc d m+z9zao /8a uxpart 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 magnitudw* vfu,6 xij+ce of the electric field at a distance of 1u 6x+ic*jv,fw .0 m from the nucleus?

  What are the magnitude an2tyuddy3qin0t30a7hho.v-d zw7) jqd direction of the electric field at a distance of 1.50 m from a 50.0-nC chargqhdi.2ao73vd0 ut wqy7d0h 3j z -nyt)e?

  A 5.0-C charge is 10 m from a small test cha73m90drq ihky q91u *pn 7zugxqa6/wrrge. What is the magnitude of the electric field at the location o7u/9n60 m x* 9krahqriz 731qgdupwqyf the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction g hk0ffkn2vi w1*e(r* of the e1(f*rhk20 v ke *winfglectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude0qc8xmpp aq:,9z91r xqkkfl , of the force experienced by a 1.0 nC charge placed at the location of the test c,9 zkrqlpm q9:k p0aq8 ,xxcf1harge?

  Two point charges each have a value of 3.0 C and are separated by a distance ooc;v)+2r(rt+wa.9wsqoz p cqpd; bu2q lt5:n f 4.0 m. What is the electric field at a point midway bec2rou29.pv+;(+ nz 5)w;c adpq tw osql:brqttween the two charges?

  A 5.0-mC charge is placed 6fj pvo 1)1zamat 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 30zf61)j m1pa ov cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCim2s8w8bg 5nu 32gpsa charge is placed at the 50 cm mark. At what point 2g85ni2 gums8a s3 pwbon a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are p, djt4-fhkvxj /rpq4+laced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the po,4/4jtq jr+vk pfd-xhint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The qysd4 7(li25xryrohre.1 s 2u last corner is or2s.d45eusrhqy7 ox y2ir(l1ccupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square wh kzaedm 8dxi*i(6km/*ich is 1.0 m on a side. Charges are placed at the corners of the square as fii*mke mxaz8( /kd*d6ollows: +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 onmnu 5(p*.n3lrc dx9 pu a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude od .ucnp5*rpm (xul 39nf this electric field?

  A particle with a chargez1mwv k1uegzg :/)2sg of 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 elewdoz .giv*, flnw (xvn4e0+p1 ov)2k bctric field of 6000 N/C pointing downward. What charge ig.4 oewzp1nknb( v0vdl,2 ) f vwxo+*must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plyl(o ta1i4; mwaced inside a uniform electric field, and is suspended agai l(1iamo ;twy4nst 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.+t osf ulg/wbm* /qx5- What is the magnitude of the electric field 5.0 cm from theq-s /butxw mgo*fl5+/ sphere's surface?

  A metal sphere of radius 2.0 wr kbi46*m yqs5b 9q(w/aguorfi1 7n3cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the (3iuqnsr wyw6/k74 ob *g9qmfr51abi center of the sphere?