State the law of conservation of eletl +62jz2jw hrctric charge.

  Is it possible for tr 7qmv,t18imh 5 qq,nvwo negative charges to attract each other?

  Is it possible for a positive andm2 x da4datq49 a negative charge to attract each other?

  A glass rod is rubbed with a piece of sbp+gvb:ww 6r s;fcw25ilk. During the process the glass rod acquires a positive charge and the : w v5 ;p2w+cgr6sfbbwsilk

  A proton carries a

  The model of the ato0 fxzaqs;;s b)m shows a

  A neutral atom always h 8i m )mnytw/0ns68owbas

  An atom has more electronswj4k q(mm/y)(ozq:qtpva ju 77: ,ffy than protons. The atom is

  Materials in which the electrons are bound very tightly tlp t0sj44ipj rr 4.c3vo the nuclei are referred to 4 prti43s c.jj40plvras

  Materials in which the electrons are bound very loosely to the nucleiczrel*qh r :*h*;c4g.b7kdnq and can move about freely within the material are referr;q4gd*qkc*hlrncr7* he:.z b ed to as

  A negatively charged rod -nhfw;g9- jgk is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the chj-;gw- 9nk fhgarged rod will be charged

  Sphere A carries a net positive,fsnr43 sh u6x charge, and sphere B is neutral. They are placed near ,r h3n4sfsu x6each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge rxvfv,:vrb40d; e6c7hhz0j) hg;yu ,kr r7wd an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelz, wvc vtlth7 79:x,hxj+ 1drjy charged glass rod. ht9w7+hv xrx:jzt ,, l vjc71d The electroscope

  An originally neutral electroscope is grounded beznm4o. hq tds /zo+)9riefly while a positively charged glass rod is held near it. After the glass rod is removed, the el/oqz9dm4tnhse +) .zoectroscope

  A positive object touc/oc)ii0v- h uxq6j;f+ tdwu. yhes a neutral electroscope, and the leaves separate. Then a negative objeci0xju;i h6qo- tyc+ dvu).fw /t is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. p5ix:i) yag 2k 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 eityi :i k2)x5agpher ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb consr ngrv 3vd 8/y(*55v pc*ofphwtant $k$, which appears in Coulomb's law?

  Two charged objects are separatcu 6o/ h8+hywoed by a distance d. The first charge is larger in magnitude t86oh/c owu +yhhan the second charge.

  Sphere A carries a net chargejgpre.dla5sv p8pze1k,, r 5; and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?e.5vzjr,,sar p;e1 k l5 pdgp8

  Two charged objects attract each other with a ce8kq2 6ntyxz: )* xmzomrtain force. If the charges on both objects are doubled with no change inm:my t*xn2 8okzzqx )6 separation, the force between them

  Two charges are separat 7;ta/l3w xm(e c6bkfped by a distance d and exert mutual attractive forces of F on each other. If the charges are (l6tp bek;7 a /fm3wxcseparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. xkifj6qm5+1 gc0zrh2 What happens to the force between tfkrz6 1m2xqh g+5ijc0hem if one charge is doubled, 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 of 1.0 my qvluv,;/v u(. What happens to the magnitude of the force on thyv(qv l;u/,vue proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What ha/d lck:m;q aq;ppens to the magnitude of the force on the first electron if a second electron is placed next to thed/a; ;q:mlkqc proton?

  An electron and a proton are separated by a distance of 1.0 m.hwym8c6 ; .agh1n dyx(*5bt3.urun b t What happens to the size of the force on the proton if the electr*ha;tb6nhw(5y t 1y.b u cg.r3xnudm8 on is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of am24uhtup 4;x +5qse*b 5x1zv)bjof bu square. When a second point charge of -Q is placed at one of the square's xp52+b4j5)s 1e btzxhof *4bvqum;uu 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 charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. s tnxq1t, 8cosl pswy1y b*m1(4sd*f3 When a second charge of +Q is placed at one of the triangle's ver 8 f to4m,qt1**1yybsns(slwcd1xp3 stices, 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 is7a5yucdt )dm: not a vector?

  At twice the distance from a point charge, the strength f0z1 g/q dhimbt(w1y(* bgx+ gof the electric field

  Is it possible to have a zero electric field value between a ne1 4:gqg6uevh 1k.hdhlgative and positive charge along the 4 k.qdlhe:g6uhg1hv 1line joining the two charges?

  Is it possible to have a zero electric field value between two positive cha)ugd .9n9d swgw7vyx *rges along the line join dwwsv7n.ug d*x)9g9y ing the two charges?

  Electric field lines near faa2 u5y45psq 4ky)yu psitive point charges

  The electric field shown kukh4z8vvub7bu:.r 1

  Can electric field lines intersect in fremr y0nin9mx c3;e2 od(e space?

  A solid block of metal in electrostatic equilibrium is placed in ae: aj mf)(;omy 5mk+cg uniform electric field. Give a statement concerning t;kyo+(ecf gm m ma5:j)he electric field in the block's interior.

  If a solid metal sphere and a hollow c,au1 ftk e+qmxv)j /w,kzx,4metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the cencz4e,),kx k,m1f+aqjv/ uwx t ter and the surface is

  A cubic block of aluminum rests on a wooden table in a regil7w/vjapj8 j 9on where a uniform electric field is directed straight upward. What can be saj8 /wja9p7 ljvid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neag on;,+k a)07ul.)rt(e 7fp6ygq5ojdbm wohnr an electric charge

  A positive point charge is vp4+uc7abq8 *p-pqpi enclosed in a hollow metallic sphere that is grounded. As compared to the case without the- *7qqua4cib8 vp ppp+ hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statv3 )l7v9xigynw)yt0 z ic equilibrium.

State Gauss's law.

  The charge carried by of +wc+4*ubb xvf; c.ttne electron 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 many more prot4oar epjl)g *vf 5+oj,c8:pw dons than electro erdw5) p+:*,v8fo jcjlaop4g ns does this piece of plastic have?

  What is the charge on 1 kg oe0;pxrf l,tw8,m q8c lf protons?

  An atomic nucleus has a cha ht/ pxyhtyigm47;++urge 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 2.0 an cuw5wh0w 6ox-d -4.0 mC, respectively. What is the magnitude of the electric force betweewx 0-wo5u6hc wn them?

  A 1.0-C charge is 15 m from a second charge, and the force bet; b ct5m 01oacziz2isau8i jlf96c8e, *2poks ween them is 1.0 N. What is2c ct;isz saej*95, 2 08oa6 ibkclu8fpi1m zo the magnitude of the second charge?

  Two 1.0-C charges have a fory/p :i)7bz3 +j flg,kw7 zhx8aozq, pkce between them of 1.0 N. How far apart are they?

  The force between a , :4)1b3g16 ts cbuy0ew -hzuarpy+bikk m0du$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialg d,a3ws-2s2n,5b9j-t ;asi orhhs jrly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forws is5hjh d s;sao22,b ng,-3-9atjr rce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha7h 6qfkiut 0-orge is at the origin, the second to the right at x = 50 cm, and the third-f q0u 7ioh6tk 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 t(k lp u zo+j620ol5velhea37placed on the x-axis. A charge of +2.0 mC is placed at thelp 56ozul2t(leh+jk3e70 v oa 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 charge at the origin?

  Three point charges are located at the es :p1xwb tu-4following 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. Wbpxwe4u1:s - that is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center on gr4lqi *gm4fq+d +vqd3*4rgf a square, and a second point charge of -Q is plgd4 m3q *+lgf+44qn i rgdvqr*aced 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m-;0 rwrj :pvct); Q3 = 5.0 nC is at (0, 0). What is cpwt -j:rrv0;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 hj*p8ch :cf z 3*1luz q4gzp2um); Q3 = 5.0 nC is at (0, 0). Wha2uhcf8z3pj:u l*p*c z 1qg4hzt is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are p g krtz:8i+z (5 borybz,8i.sc *igwy6laced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the mag*z r(i6g88z,cors y+ i.tzi kgbb:5w ynitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separat1 /l c5px0wr e)k,f1xfz3gg7 ljhom 3wed by 3.0 m. At what point, on a line between the two charges, wo lf5 h 7zjg1k0c frexgp3m1/,o) lw3xwuld 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 u e3 nkepn;hzp .i0h;c87r8yi charge is at x = 4.0 m. Where on the x-axis can a third charge be placed ;0nc8uyk.r8 hize pipn37h e;so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a. q8kntp49rp yt x = 2a. Where can 9p4t.8kyqnrp a 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 +eu2cz o 5m56j6o;jmbs+2fp7h. )q ws yxykgytotal 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 f6 q7en, r ,eoamq8rhs)orce of gravity by the attraction of a fixed proton some distance above it. How far above ta) srm8 7noe,q,6eh rqhe electron is the proton?

  Two 0.20-g metal spheres are hung from a common poimrug. m6;.obog*+eys nt by nonconducting threads which ar+6mogmbe..r s*g;uyo e 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 magnitud2 zt6zbjuo ymd+v.gn9+25l nn e of the electric f69go tbzun2j nv.++z2 y 5lndmield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of. scjt8 dv0hw2 the electric field at a distance of 1.50 m from a 50.v h0dws c2.j8t0-nC charge?

  A 5.0-C charge is 10 jxf pko;l*n0 8m from a small test charge. What is the magnitude of the electric field at the location of the;pkf 8 ox0nj*l test charge?

  A 5.0-C charge is 10 m from a slf6b1kw* m6upn+wn q8mall test charge. What is the direction of the electricwpf n6 8ukmw q+bn1l*6 field?

  A 5.0-C charge is 10 m from a small test charge. What is thsw(x5du5 lqmy7nyyq( /vi2/t e magnitude of the force experienced by a 1.0 nC ch d(/q2yvnwx/5ym y7isu ql5t(arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C a)t bmhb7pxf na btn-9(0mbi)+ nd are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargestf09)-xbbiht m7)+ nnpmba(b?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charge1pnyu8) xd0rhu7 vqn/ is placed at the 5nrx17q unh8y0pv / )du0 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 -4.04bg rtv:fwukmg ./, w2 mC charge is placed at the 50 cm mark. At what point on a line joining the4gkb:v/,umt2.wgf rw two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 )1*ff e)xq o1d wr2e1owq5tspmC are placed at x = 0 and x = 0.20 m. What i5qqxe1f1o*d2we sft1 o) rw)ps the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges um p)uh0y0b)w rl) x5 hcssuu zt4j;z*k70e -fare at 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 the center of the square. )tks*m0)r uhuxl0y 4sph ;uzczube057 w)jf-

  Consider a square which is 1.0 m on-rlx c*cl pn.1 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); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric fixp1. c*crn ll-eld at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when io/. o 8c:ic)q2lbmphlac a- kum.c 33vt is placed in a uniform electrp2m3vul/l - qam.c ckoa.3c :h)ioc8bic field. What is the magnitude of this electric field?

  A particle with a cha7oc2xc czu4:zzag4q 2 rge 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 electric fr fm2hr /q.g.dield of 6000 N/C pointing downward. What charge must be placed on the ball for it to2g./rd h.frqm be suspended?

  A foam ball of mass 0.150 g carries ac m5vdz*;s p5k9idiygz 3t4k9 charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction ospmv ig3*d t4c y5k9zk z95;idf the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is t w t/d ahud5ne n1 ulkkez6.-/af7s+k:he magnitudelk ad1z:w h-sun ke/ufn.7 d+6a5/etk of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge /v b lw(n.,.ie c /dbvhcauk.8of 3.0 mC. What is the electric field 6.0 cm /hnca.8,(c.el v/v wb .bduki from the center of the sphere?