State the law of conservatio7mlcxy l tp9wu9ix; 3p3j97z:s msk,on of electric charge.

  Is it possible for two ne8w+g.+xqd fio0mwq. sgative charges to attract each other?

  Is it possible for a positive and a negative wzzl340, 28adh ui cjtf (*6 qzmjci.lcharge to attract each other?

  A glass rod is rubbed withnte3+ w*jhq. y a piece of silk. During the process the glass rod acquires a positive charge and the3nq.te* hjw +y silk

  A proton carries a

  The model of the atom showsk9u5ti.e7u x9hx(tkpagp*41 li* dz u a

  A neutral atom alwaysfx (+1arhi* xc has

  An atom has more electrons than protonsw xr4)h9xm guzo 7dlg5 ep2/t6. The atom is

  Materials in which the electrons are bou6m4 g x bxd:k+k8;g:uwwegw + 2d ,4htlpqzno5nd very tightly to the nuclei are referred d+ww : zdloh ;k2+xkx,up5tgg64 gq 84b: mewnto as

  Materials in which the electrons are bound ver( 7+k25ktqjumagusu-y loosely to the nuclei and can movugut ( q25 -j7ska+ukme about freely within the material are referred to as

  A negatively charged rod is brought nea1srnv, 7d:cq+ii eu3z4xfz0x5 zi cj;kl,p2 fr one end of an uncharged metal bar. The end of the met7nz:l r1; k5xz 4i 3+z cdvu2,ijpq,i0f fxecsal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and -4sav22szsz-u. r zms sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched vss aru-z42s-z. mzs2with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivim ohytyh2.-w8(/b l wm-/y zbely?

  An originally neutral electroscope is briefly touched with a positivelyv0j kk*nxlj,u5j t-hl+tch67 charged glass rod. The7 06h lj-*+k jhn vltjc5ux,tk electroscope

  An originally neutral electroscope is grounded brie a6ndx3noaf0 4 ;jj(ujfly while a positively charged glass rod is held nea n;dxn6 u(j40oj3aj afr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral hf/ ogm5hr n89.ryuk3*f2k xkelectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not tou/ug.xk5892*rhyof h kkn3 rf mch it. What happens to the leaves?

  A large negatively charged objee(r v3 ttu w7xovo,o*2ct 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 forward, but does not touch the negative obov (twuv7r,o 3 eot*x2ject. 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 C(b+ (uxgugio2 g0 ol1zoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cha0q) qb:4i*t1uskcv jlrge is larger in mtvq ib0jc1sk*:l4 uq) agnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutravk:4sr 2+tg lql. They are placed near eachgkrlsq +t4:v2 other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o5rc/)6abihpo9ax fpro* n/90lv u+ren both objects are doubled with no change in separation,pbr*9/uox0hoa v /el)fr np+56ci9 ar the force between them

  Two charges are separated by a distance d and exert mutual attractive fc+lj(xh p.lp(ezf* 7dorces of F on each other. If the charges are separated by a distance lj*xlc((h f. zpde+7p of d/3, what are the new mutual forces?

  Two charged objects attract each othbalj.*.te jjr+6ed5p er with a force F. What happens to the force between t6ea5l.dtjj.r bpej+ * hem 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 m. Whuv8 pbec .+ j5mz2;ih(e*;mqtd, djytat happens to the magnitude of the force on the proton if a second electron is placed nextdc5 +eh*vjpz m., ei;t;( y2bd8u tmjq to the first electron?

  An electron and a proton are separadm*n7 j9l gqs:wd( brpm6;zg4ted by a distance of 1.0 m. What happens to the magnitude of the force on the first elec6q 97mdws :zjgd4*pbln(; mgrtron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. 28nq7 9,u+.k2jjcob qgfq:mcbehh 1b What happens to the size of the force on,hg qc8jqbe2172qujb:+kh.9 nbf omc the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is gd*xexu bn18p 14da7j placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed thate8ddgxujpb1 n1*7ax 4 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. /e*ggoqm u )gai(c2lwno (b6xt :v/o. 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 duxieg2m c. /o)vgo( :/qu6gotlbn*w a(e to a third charge of +Q placed at one of the other vertices?

  Which of the following is not d w6n9qnl. vo0a vector?

  At twice the distance from a point chargebgd)l(;/ c2a jnpqz zk4z4m8 s, the strength of the electric field

  Is it possible to have a zero electric field value between ) waf zpc(jv1z r039 ibkvfb,,0zrd6xa negative and positive rx)k(fw9bpz,dz 1a0iz, c bvjf60vr3charge along the line joining the two charges?

  Is it possible to have a zero elec5mqn 9f//px1 o en6lewd) :okqtric field value between two positive charges along the line joining t/nod9 l:1mk)p eq5fwoe xn q6/he two charges?

  Electric field linesr y im7rs 1,,qk2ccl;h near psitive point charges

  The electric field shown c)f-3pjobz2 f

  Can electric field lines y.wuy/cnbml2; 2 c5dsintersect in free space?

  A solid block of metal in electrqz2bk 3 8wvh6ezwpd09ostatic equilibrium is placed in a uniform electric field. Give a statement concerning the w6pzw 02q h9zbdke3v8electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters areutky q, xqzu+3.mkm2ll sm (k 5/2cz6u each given the same charge, the electric field (E) midway between the center and the surfa+ 5mlz ucqxs6ktm22 ku 3y. q/mukzl,(ce is

  A cubic block of aluminum rests on a wo,vo eg/vn17dol2fk 0rabl)+s oden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge ovedl1k7 fov,a lr o) 0g2n+/bsn the block's top surface?

  If a conductor is in electrostasv,7;)mtx g sjtic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thas vrar 0p:d 3l4d blh6/93dr6vofy;gn t is grounded. As compared to the case without the hollow sphere, the electric field at a p3drhl 4o ndf3adpvy0:6rg bv;l/r9 s 6oint directly above the hollow sphere has

State three properties of conductors in stgg fh14ne li39z6:adw atic equilibrium.

State Gauss's law.

  The charge carried by one electron ifn)p7,gvo3 n es $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net chi zbmr3r;l 4f:arge of +2.00 mC. How many more protons than electrons doezr3rmfl b4 :i;s this piece of plastic have?

  What is the charge on 1 kg ofug p;d f jy4ab+y/r4t2.+bomf protons?

  An atomic nucleus has a chargk9fbe q79(d vu5xz.pze 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 ka 2ij16kj7ry8a rne0values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electr72kir 6a 8eja1y0r jknic force between them?

  A 1.0-C charge is 15 m fro;;p,hpd1b5vr8vika rb 71o xx m a second charge, and the force between them is 1.0 N. What is the magnibp ibh5pr;ak18 do x,;7rxv1vtude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart as.97:t , ffi+ tu-jwkf*cf dfnre they?

  The force between a d vgto31y x:6h$30 \; mC$ 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 for7;dkaf e b 0i4akj96*nd dkju1ce. If they are moved to a new separation of 8.0 cm, what is the elect;7 u j9kaikad1* fedbkdj 460nric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. ieirrdb;x -4 0The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm marb 4rrxidei- 0;k. 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. Argj mkaq3( p y2j55xw5 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 electrostatic force which5xp 53aw5gkqmry( j2 j acts on the charge at the origin?

  Three point charges are located at the following9jm (g) sm6cqw 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. What is)wm9g c (mq6sj the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squaruba1 l7/;in ke sw4m:2:d(:ikikw)k ax sra*o e, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic7 wka4s;k)dk: earlsw:iun a1 ik /om(b2x*i: 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 =dq:s29 guvmh u5w +s.b 5.0 nC is at (0, 0). What is the magnitude of the5 w.v+hmd:gq 29buuss 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);9u qes fbiui0j;ch5( 1 Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5 queib;jhfs1(c i5u0 9.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera0 z9vqe8tjdr m:sk67al triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on anyj7dz r6e 0a89msqkv :t one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 l)f :ueez :3mvm. At what point, on z)el:vf: m3 uea 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 )8; sv (xlttbmand a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force v( )xs8 ttlmb;on it is zero?

  Charge +2q is placed atethec-1wqo /d)k ye81 the origin and charge -q is placed at x = 2a. Where can a third positive)dwthee8c1-/k oyqe 1 charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total 8.cn + bupgvom,m kz6/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 th4+rnz l9en r6me attraction of a fixed proton some distance above it. How far above the electron is thelnrn m+964 rze proton?

  Two 0.20-g metal spherreowyz/4+ +gg es are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces gy/w +o+ger4z 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 elec.0y jf74 -fwpowocnj/tric field at a distance of 1.0 m f/0focn74jp -fy jo w.wrom the nucleus?

  What are the magnitude and direction of the electric field atzliwg ) 6 7m7z1f:xcaatdc55w a distance of 1.50 m from a zc:7x wl5)wgt15ficm dz aa7650.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the - prcf-3*s88imlb exdfzz yqok)k 4-.elecs8-ei3yqkl- f xbc.r*zk d8 )4f-opmztric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wha(ri5, pvxa wt- j0*tndt is the direction of the electric fiel*xvjia ,p(tr w-n05dtd?

  A 5.0-C charge is 10 m from a small p*d (p*ff1zsuzwp87 e test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at th1e7zf8 (f* up*p wsdpze location of the test charge?

  Two point charges each have a value of 3sj/70jc/ct2i p tagr8.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargesgc/c tps 27jjir/ t80a?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -6(xz137e((urynxmp e 12sl .liebt oq4.0 mC charge is plact.e lmo1 qns p6 (u7x eyibl(zr3e2(1xed at the 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 n.oca5a c4s a8meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is 5c. n48aaosacthe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and95e l.m n4nvyb4w nk0x x = 0.20 m. What is 5m49 lnn vxk04e. ybwnthe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The r5wjt(p ,uy)d)zk vx;wd k::rlast corner is occupied by a -3.0 mC charge. Find th:x:wtjr;z(k)rk v d, udpy)w5e electric field at the center of the square.

  Consider a square whiczgk-06 n*8ino ttgrs 5h is 1.0 m on 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 eln0 kog6 t8grstzin5* -ectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it isu ( qbxe9i085l-*z,b gtvtezw placed in a uniform electric field. What is tqe* ig w z5b 9e0ltx-,vzb(tu8he magnitude of this electric field?

  A particle with a charnntdhl ,-oln g))*n/hge 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 plyg , 0o- bgs0 no+lot :/9glzx1csu2qjaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for ito1+gqts-9n 2oo0b gly:,g juc0z/sx l to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ballxe; 4+5.z( wg2g qxyhmuzroa. is placed inside a uniform electric field, and is suezxh agg; .y. r25qz+x4(muo wspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carris5gf*ml ;1nj kes a charge of +2.0 mC. What is the magnitude okfj;n l*5gm1s f the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eleqsvn8a9r)0 ep ctric field 6.0 cm from0rp qe9sa8nv ) the center of the sphere?