State the law of conservation o(w+yt z* lmw9jrt fo5)f electric charge.

  Is it possible for two negative chsg-c n nj lvs6:d2mo1esb;, h*arges to attract each other?

  Is it possible for a positive and c yev+fr ef*4bv1nd0;a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rs;ak 31:l;c5d f t4x.waxfnvgxx 3h: cod acquires a posixkx:tl:1f s;cx;f3n ha5 3wxdac .v4g tive charge and the silk

  A proton carries a

  The model of the atom shows jxj0bzglf-jl..3 p c:n j68pt a

  A neutral atom always hasa:nh*hknnx9 ggic9;oi9,z f ,

  An atom has more electrons than proton87 x5of0brlgh5 2gvdcs. The atom is

  Materials in which the electrons are bo z *lf(l0g:vtaund very tightly to the nuclei are referred toztlg :*l 0(fva as

  Materials in which the electrons are bound very loosely to td ,w.dbreo 911yy0d q.yp t2pi 5anen5he nuclei and can move about freely within th0n1 e 1rw pya t.d5 y,ed2oiynbpqd95.e material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thex 0gu 2e7e1zyg end of the metal bar farthest from 0ye7 gu12gezxthe charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Theycuxm3 2 hj 7s6;wofxze0by-iqy:e*v+ are placed near each other on an insulated table. Sphere B is briefly touched y3my h- oewxbjv z72f6es:;q0* u+ixc with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?jcx. n)j l l,ds(u;cr5qse;:l

  An originally neutral electroscope is briefly touched with a positively charged 2, m uidcjf/9cglass rojm 2df/cui c,9d. The electroscope

  An originally neutral electroscope is grounded brieff 7: k4:-xuno*f1ln ab4 1xtxugea.yzly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosx4z: 1-k*g :7xfxautef4nun.yb ao1lcope

  A positive object touches a neutral electroscope, and the leaves separate. 2 n6l irc53-xzn gen2 o:wgpm8Then a negative object is brought near the electroscope, but does not touch it. What happens:nw2-p2xi5gn e 36 om 8cgzrnl to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrz, 0av99vbgxb al 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, bv99 bgzbx,a0vut 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 09; h p5loy/,/hh tvlla;ynrgCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatxjg62ue7qedsnh wx)g:al;w) 4: , exx fi+k(yed by a distance d. The first charge is larger in magnitude than the :gyx7whq xef e; kd()l)46xi sng,w+ 2exu:ajsecond charge.

  Sphere A carries a net charge and sphere B is neutral. They areg(yfo *ig-cq2 placed near each other on an insulated table. Which statement best describes the electrostatic fo-gcfy2 gi* o(qrce between them?

  Two charged objects attract eacpe/0f;t4o 7u.uzhnw +am0cphh other with a certain force. If the charges on both objects are doubled with no change in separationtwuh/0coz hm.a0 p+7p;nef4u, the force between them

  Two charges are separated by a distance d and exert mutual az tis9 6pqpudc)n1 76 sifb)e5ttractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fo ip 6)if5bncq7pse6tz) u1 d9srces?

  Two charged objects attract each other with a force F. What happens to the forc8g a7eg nuc;1c:pkd7n e between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced toadnc;c ge :8p7k1nu g7 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.mk* ycrlv+;penn o.nf1)6mjk31i vs, What happens to the magnitude of the force on the proton if a second electron is placed next to the firvemny ,k*ris+c j.)mfn1 v n1;lpok63st electron?

  An electron and a proton are separated by a dista6rz)pa2 )kxae nce of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton?az62er)xapk)

  An electron and a proton are separated by a distancb;1+e 4m8n n/com 6bkz wq e61w1rczqre of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.+co1/ zn k 6 cwern;bm4q18er6bz1wmq 50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point ajoc .m0am;t0vm4 az 6b8-fff 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 v m0zfcj-8bf6o;a a .m 0a4fmtthe net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is (-ls 6dnuq( zgm17yhwplaced 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. W lg7dnmz61usw (h( -yqhat 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 a vpu+k71go +h9tpyo.y ox.n( fhb6 vr5g ector?

  At twice the distance from a point charge, the strength of the electricgf*0d1y dk5aup3 1lz a field

  Is it possible to have a zeui6.jpunjr 28ymc90z ro electric field value between a negative and positive charge along themp9r 6 y8.0juzin2 ujc line joining the two charges?

  Is it possible to have a zero electric field vas yt 5 9umtb8fof4xz.:s1 a)azlue between two positive charges alfssxzm a9t: y)14t o.5aubfz8ong the line joining the two charges?

  Electric field lineseg bxvo9nn*tuq9r;6a0 m0 ,if near psitive point charges

  The electric field shojpgwqnaa,./ ; +ipxq*wh24 xcwn

  Can electric field lines i*x lg;c0ta8.i.li knsntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifo;h,ik xm.t /atrm electric field. Give a statement concerning the electric field in the block's m./x t;thai,k interior.

  If a solid metal sphere and a hollow metal sphere of eqalo+//tc gz8nw-; jo wual diameters are each given the sameolg/ 8wota;w c -zj/+n charge, the electric field (E) midway between the center and the surface is

  A cubic block of alumin9wut. njr hi*;um rests on a wooden table in a region where a uniform electric field i;*i thw9.urnjs directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anxuk3441 y lkpz electric charge

  A positive point charge is enclafm(o ( j xco1i1)vy(xosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sph(cxvoyoa)11 ( jxif(mere, the electric field at a point directly above the hollow sphere has

State three properties of conductoby 22crx;u n8s f dns9inu81s.rs in static equilibrium.

State Gauss's law.

  The charge carried by ones;s wo1rxmdj 8o)f:q5 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 +2.0 f.ep bdr vxzq94oclx9k/1u ( l,p3zo30 mC. How many more protons than electxpzdc9v q r loo,1lp3(/x9u3k e4b.zfrons does this piece of plastic have?

  What is the charge on 1 kg3dm:c l i-tuf4 of protons?

  An atomic nucleus has a charge ;)u0ob ( 9vmbxe bjjuwc;f c3sks;c.*0eqc 8eof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, hd mxv :0z* jnuiypjp( dpovru;08q-1tg,.tz2ave charge values of 2.0 and -4.0 mC, respectively. What is ntzz:*qm- id0d1j,2g 8.j(v vuot0xp ;pu prythe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargk2 3zxg +p98rhuk elj:oh,c ;+y(jge2 vrhz4ge, and the force between them is 1.0 N. 2:r g h+v 8zcpe 23zh ekukh49y(xlgojr;,+gj What is the magnitude of the second charge?

  Two 1.0-C charges have a force between yk9 n *jp5u7;0aun-t7qundb lthem of 1.0 N. How far apart are they?

  The force between a h 4 vuou;h0t )m5w-fcu$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apatafd22;zlwn)mbgd /n) x v 2/o4m+j*m5 nmlwkrt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force nbk d)gmz)/mtm22*j2d5a/;m4n+nl ofv wwl xbetween them?

  Three identical point charges of 2.0 mC are placed on the x.q,zi5meas-t4 (aa 7pu/lof w -axis. The first charge is at the originqa4-/ ,esatu.7a(fwo5 lp izm, 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 charge of +2.0jcfh;vgb+: , j 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 which acts on the charge at t,jb f+vg:cj ;hhe origin?

  Three point charges are located j3k-hf86 -yk swqlbk5at 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 magnitude of the forc-s85b6kqhyklw j3 fk-e on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, jn2 q+x.xec -xand 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 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 x.qe -xnx+j2c placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, m:: cs.rn mw96*u fu-ip dm-ks0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude odpr *s:m-m9un. ufi sm :kw6-cf the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);h1tjla byk 9+9j n)lg; 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 force on theyj 1+ntg kjl)9 l9abh; 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticej m (akw*q2a/es of an equilateral triangle which measuresa2mj *wak qe(/ 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 +ap/s-kew *cj46)t :fqkdbsz: c .ooa14Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to : f) 1j.cza-6w: o c opskqs4a*/ebdktplace a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at6l . ar9eko-*eow f2g-p6 zwmf the 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 the net force on it l oo.pk-w w2 e 6mgaf9*rez-6fis zero?

  Charge +2q is placed ab zj3fdv, iq6 y0z)bu2mj5i.3*g ucagt the origin and charge -q is placed at x = 2a. Where can a third positive char5 jyb63,ui2ucq) g j.vmz 0iazf3bdg *ge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Angl.r+2f,tiy/ dpc(58ir/ js oq0kki 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 up against the force of gravity by the attraction orh-*2 c)-8nlgbcyu jof a fixed proton some distancb*y28 )u-chl jrcgn-oe above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common6kobc)(o wk0y.zd r:4xu9kh d point by nonconducting threads which are 30 cm long. Bo: c do.zb0yk9 6h( krdux4)wkoth 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 ha6j exb*j/yl2i8lgtx 1 s a charge of +40e. What is the magnitude of the electric field at a distance8j 6beyjl/i2 *1tg lxx of 1.0 m from the nucleus?

  What are the magnitude a ig04 9pm,3)r isqhkabbtu.-pnd direction of the electric field at a distance of 1.50 m from )u i39ir.4bhpp,b 0gtkm s -aqa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t *c)3p1t w)e:wk1vv ;nszj b3ppik6ethe electric field ap vz)3nbke twve:1t *61cji;3)s kppwt the location of the test charge?

  A 5.0-C charge is 10 m from a small test cha6ivy8t85ibhw h/ :vl6y5tkb crge. What is the direction of the electric f8i5kbtb6 hyvhwv5 :i6/8y ctlield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o qu*gp4oxd f y 26iq:i6jqu15yf the force experienced by a 1.0 6jq quufyo:5p26x*1y i4 iqgdnC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance o 9dael,y9:g4 l j,3ppe vxd7opf 4.0 m. What is the electric field at a point midway between the ,9pel4xd9g,lj o dv py73ae:ptwo charges?

  A 5.0-mC charge is pla4)e8l.wu 1 vvz :h2si9otblsyced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed1islh)8.z loubyvwt evs49: 2 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)f+9dw c xlegv21aq xck 1v)d9 meter stick and a -4.0 mC charge is placed a xd kda1 clcvq2+egw )9f91)vxt the 50 cm mark. 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 placed at x = 0 and x = 0.2wb(7j:fpw4 wjpn f) v30 m. Whatw4wp ) n(vfbj f7w:j3p is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are :eqbukkv)diz9:ur o2t4,,lr 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 electr,,9k kl24ve:zutb qodr ru) i:ic field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placs:dfwtf24m* 8ufpu h2ed 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). Whatp fwdh4 fu*f 8smu2t2: 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 placee4mllgk(x .:r r8tz0g c.yt0 md in a uniform electric field. g( 840y:cx.eltmr0kltmrzg. What is the magnitude of this electric field?

  A particle with a charge ofnjy/ da.b )ko6y+v9ev 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 plac fc*48 3v:s pzpzac-vhed in an electric field of 6000 N/C pointing downwa v*:czhp zavp4s3c f-8rd. What charge 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 placeom(cor, o3 +lwpb0y(ld inside a uniform electr (,orlwop+3yb mlo( c0ic field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10t8m.q.vjjl8 i uz,d0 a cm carries a charge of +2.0 mC. What is the magnitude of tj8..d,amql8iz0vj tu he 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 thu4 k(c;as: exze electric field 6.0 cm from the:xcuzsa k4( ;e center of the sphere?