State the law of con b,(i+cl r3nauservation of electric charge.

  Is it possible for two nnmi6aocn9y0 h/6u.ey egative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each other?.rfh r3-zcmc:;;4-ceumg fkl

  A glass rod is rubbed with a piece of silk. During the process t*ph6k vdw9 7ptjsp 92xhe glass rod acquires a positive charge and the x92j tp6p7pk9h*vds wsilk

  A proton carries a

  The model of the atom sho/heh; vn :fcmgr+63ti-i0fnq ws a

  A neutral atom alwaylj:jis vm)fwi ,r)6i+ufx74 es has

  An atom has more electrons than protone4os zax) 1ecjn3t* tcq 705vcegkh5*s. The atom is

  Materials in which the electronsoc g -*/u4pgiw nfp 0px,(*mer are bound very tightly to the nuclei are referred to asguo cm**e gpw4x0r-n( f/,ipp

  Materials in which the electrons are bound very loosely to the nuclei and can-jlwji9+q c* 89ehash move about freely within q* jje8+lh aw-shc99 ithe material are referred to as

  A negatively charged ggv bu;)u 0k66as.wiprod is brought near one end of an uncharged metal bar. The )iu.g kg6vp;60b wsauend of the metal bar farthest from the charged rod will be charged

  Sphere A carries a neh*s4g e2n)d h(s2j(jw2as si bt positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement 2id2hs4gs jbnh(* esjw(sa)2 is correct?

  How can a negatively charged rod charge an electroscope positivxq6t* 4icrpsl: p:6tj/zt 7ko ely?

  An originally neutral electroscope is briefly43ypwzcf/o*txz w j,i r39 ,cocs6x(a touched with a positively charged glass rod. The electrosw3sy rj/ofxz, o zc 9,6xt4 3(ic*wapccope

  An originally neutral electroscope is grounded z bpy.x(j owsg1.r9zdc;48+ql(eoso briefly while a positively charged glass (dxz oj.4;oyce 9gw o+r8qs b(sz .p1lrod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves su ivpni8fm4 nw:pg( e79wh f-(eparate. Then a negative object is brought near the electroscope, but does not touch it. What happenif -wmwg fvp(h49(pni8:7 nues to the leaves?

  A large negatively charged object is placed on an insulated table8 6mf0cji7 fodkjj 5crae) 8l/. 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, fd87ie8j /fcj rl5) 6j akmoc0but 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 ofphix xhf b.j49 uo n9*l104lff the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first0h u4fzmyqa p1 4ycg8z*fk5,x charge is larger in magnitude than the se u*zc15y 8pma g4fxy40,hfkzqcond charge.

  Sphere A carries a net wt(q(c oz,;un5mo / zi9o2(z 3mz-cln ( kcwtbcharge and sphere B is neutral. They are placed near each other on an insulated table. /9n w( ozcb lk(oi(2 n,z-3tc (zczuqo5m;twmWhich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chare to-mx *q uyb/rk4e05ges on both objectsbm04q- */u yex toerk5 are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces j8o0 uv w7b5euof F on each other. If the charges are separated by a disu0u8j5vb we7otance of d/3, what are the new mutual forces?

  Two charged objects attract each other-b1xuqb y 9ceg3ai 2d5do, hzt(((ua jn)kd5c with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth gchi91 u td uy zd(boaqed53a( c5k n-,)bxj(2its original value? The force is now equal to

  An electron and a proton are separated bbqqn 6 ak6g7 xt;) 659n,dsbjmxc)vul y a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first ele6 l6bn5xd u,;s7a9cbmvqqt 6)) n xkjgctron?

  An electron and a proton are separated by a distance of 1.0 m. ez,2 i0ta k5tleri 4w0What happens to the magnitude of the force on the first electron if a second electron is placed next to thl tik4w5eet,2z i0a0r e proton?

  An electron and a proton are separated by a distance of 1.al: 8:n6sd fews4lod50 m. What happens to the size of th::l 6dfl8n4ss 5wde oae force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plaie9i.bsw pw8:ku5z6 2: zz gfkced 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 that an electrostatic force of 2.0 N acts on the positive chargewgub:2ps .iekfzikw5z 8z: 6 9 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. When1l6hzx 8e rfo2 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 a1feh oz62xl8r third charge of +Q placed at one of the other vertices?

  Which of the following is not a vec3xn;h5i ,s/e4c)z r )+bdz e8ofwbcjvtor?

  At twice the distance from a point charge, the atsz79: 9ly v8*vzt vrstrength of the electric field

  Is it possible to have a zero electric i0b3,*bbrh o(wir mm 9field value between a negative and positive charge along the line joining trh93ribibmb* ( wm o0,he two charges?

  Is it possible to have a zero elej2ey6ol ey ):dctric field value between two positive charges along the line joi:6y e2oy jd)elning the two charges?

  Electric field lines near ps pip.:l tzf5oxb;w6bo8h+s(jy4l x8 citive point charges

  The electric field showyt 3zg jl)5 lvmjg.6e3n

  Can electric field lines interkk crq c1314ihvbb 3a2sect in free space?

  A solid block of metal in electrostatic equilibrium is placed in o.l.yz 1a*th ja uniform electric field. Give a statemento*yhtzl .. aj1 concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are e( 4btrrpz tr-.g3n xme/-ve :cach given the same charge, the electric field (E) m3 m.vreb tce x-4ntz (gpr/:r-idway between the center and the surface is

  A cubic block of aluminum rests on a woof2nci;o +e+: rbyq(ycden table in a region where a uniform electric field is directed straight upward. Whynb yf:+q+ 2;c (oiercat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostad bke.6/g ib j6a2mje9tic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that0.p+ c xm9pdfc is grounded. As compared to the case without the hollow spheremcc.pd f0p9+ x, the electric field at a point directly above the hollow sphere has

State three properties of conductors iny 7 wr e,tq,t*aq/:nzjday,()aoz tj1 static equilibrium.

State Gauss's law.

  The charge carried by one electronku6r4yg :dg) n 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 charg xurk5an,(hijs(o2r .oinr 2 4e of +2.00 mC. How many more protons than electrons does this piece of plastic have uri2,h njia sxr42oo(. (n5kr?

  What is the charge on 1 kg of proton1xq4 a x-h9z :tunuo;i x8coc+s?

  An atomic nucleus has a charn 5hs )bmmxllkn 0c /zc0,kc3+ge 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 and xx 4(xh u3pmp1-4.0 mC, respectively. What is the magni xphu3m 4x(xp1tude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forc u77xgmjpg1t.(ap k 7xlg1 g(we between them is 1.0 N. What is the magnitude of the sec agwp 7u(7 gx1mg7g(xl1jptk.ond charge?

  Two 1.0-C charges have ukc/ skbka)x * ij/zcaf+m/ye9e9)y 4 a force between them of 1.0 N. How far apart are they?

  The force between a c4img (h +,+j +bor (h-qtdry,r qdyrhee:d77$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apailk -267eifnx:sz q 0mm; wx2hrt, experience a 1.0-N force. If they are moved to a new separation of0 zh2xfs72ix-i: 6we kn ;mmql 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0e62fewt. npzt q31l.s mC 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 ltpt.fen6e wq2z.s31 are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are plac,uz ejaryq1/u*m*qt zf:jlqkl 6k-8 ) ed on the 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 mj q , ak fqrykqm)l* 1l8zt/z6*ju:-ueagnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are lkb.bp5 x 38xtzocated at 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 = -1.00 m. What is the magxxtb.p8b35 zknitude of the force on the 3.00-mC charge?

  A point charge of +Q is plahe6ncxwsf9mm,r-sy o 8 k30 0lced 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 positihmrw0lf n3mcs6o8s0x 9e, - ykve 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 mgb d 9 ssv6 1oy;ioz1kk7ztw8 cm6jak/ltn:85 ); Q3 = 5.0 nC is at (01 7ktv9zg6 ;obzi8okm dk:alc6w /s8 ny51 sjt, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m rr1a:r.ppe:p 7qu 7rlbu4ph8 , 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What rhra4bup:qrr pu.87:1 7lpepis the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0s1.v x7zbi,jf mC are placed at the vertices of an equilateral triangle which measures 30 cm on a s1fv,b j7x.i szide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which 5czr j(x9d;5 zrur w6dare separated by 3.0 m. At what point, on a line between the two charges, would it be possw9u5( rdrjzd;crx 5z 6ible 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+(8rz 7j ze7-ef 6wh9cah yguc.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on ywj e+c( 7c87zgzh9r-f6e uah it is zero?

  Charge +2q is placed at the origin and charge -q is placed at xcjzjjv:nek. + 0htek85 3zjf4 = 2a. Where can a third positivvk3 h n:f80c+ zzjk5j4jej.te e charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. iz3uf1 1 7xkvh 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 ur4d e,.f9e)tb)ci anup against the force of gravity by the attraction of a fixed proton c4t)aeeb u),i d9nr.fsome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a com)91xhvarl8x gmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces th9gvr8x1xh l)aem apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chargw1iq9i19e y m+k+ qllde of +40e. What is the magnitude of the electric field at a distance o m+1k qilewdi 9yql9+1f 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1x l,w f*7;e .j,smyoxe.50 m from.elew x ;sj* y,o,m7xf a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chart .c56decj.9nd: i uj a3x-mtky4.dyh ge. What is the magnitude of the et d9j.y5 hc4:6a -.jcxun3d.tkyiedmlectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charget:vfpyy i /b-i(4afx(p +qg:sakz h92. What is the direction of the electric fieldhap fa:xsit :b4v2i /+yq(fp(k-z9yg?

  A 5.0-C charge is 10 m from a small test charge. What is the magniu.:m hr/rmb xxl ,e0cm x7zh7(tude of the force experienced by a 1.0 nC charge placed at the location of the test charge7 u lmxhz:bxr0r,me(./ 7hcxm?

  Two point charges each have a value of 3.0 C and are separated by a distance oa h a8w;kmh+e8f 4.0 m. What is the electric field at a point midway between the two ch 8a;hehw+ a8mkarges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg ;ime:btag;efuc j 0 904:hgfce is placed at the 50 cm mark. What is the ele;a g:e0m0 4;hetug9bcf f icj:ctric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marat)6q ,8lj3)cls)z )p rmm 2sspk mi+bwy44dqk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At )zk +j)q,4s 28) qtlbsma )p spwyr4dl6ic3mmwhat 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 placed at x = 0 and xm,/ef vu+ af3e: vwbd4 = 0.20 m. What is the magnitude of the electric field at the point midway ee,+vm d3w:/afvfub 4between them?

  Three 3.0 mC charges are at the three corners ( znivv +8y9w/clczm9 of a square of side 0.50 m. The last corn9z mvy( vl+ic9c8 zw/ner is occupied 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 pwzhdl7ic4w9d ;2fved vu60v0 laced 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). Whal6cv 9v we0wf dizhd7vu;0d 24t 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 is placed in axri3*rey ft a8k;u/8d:2 h hvx uniform electric fih:ih8ry; xd2/8*ak f 3vr eutxeld. What is the magnitude of this electric field?

  A particle with a cho2v 9b pg2t;b f3fzo5large 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 o :vktr .3sbo-5 p7zuo.)ygg fg is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su gsyz:5fg)o.t u3 k-vrbo7o.p spended?

  A foam ball of mass ;p0yi 8r vaf7.o rsizudw9;+v0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agaiirv wdfa 7;i80vr.9 yp;souz +nst 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 : f gy/jpda,,b+2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sua/ ,dg,bp f:jyrface?

  A metal sphere of radius 2.0 cmyzt5s4z 8c(rc carries a charge of 3.0 mC. What is the electric field 6.0 cm fro zsc5( trzy8c4m the center of the sphere?