State the law of conservation of electric chargg iuchh)lwrnv: 0.*.se.

  Is it possible for two negati g2 qp )6f7aapj0gr7f-r-suu mve charges to attract each other?

  Is it possible for a positive and a negative charge to attract eachm/3y n gb/ i-8m)z )ouv9bkx-t)cfzhzjyu7 :e other?

  A glass rod is rubbed with a pin2e k+w ,a3bzv61nj xjece of silk. During the process the glass rod acquires z36ean+1v,jjxnb2k wa positive charge and the silk

  A proton carries a

  The model of the atom showsy*/j4ey vw*y;ktv5 qa a

  A neutral atom always 2t+)3n :mpf i;2w v6ukuakulthas

  An atom has more electrons than proth/vr3c( ehvq9ons. The atom is

  Materials in which the electrons are bound very tighpzh 0k1hxa+.t tly to the nuclei are referred1zk0a hpht. +x to as

  Materials in which the electrons are boundwg p77dywk ;085 xlcap very loosely to the nuclei and can move aboyk7a0wc ;78 wppglxd5ut freely within the material are referred to as

  A negatively charged rod is brought near one end of an unchargem3 xutd-eo. l*d metal bar. The end of the metal bar farthest from the charged ro.-lu*temod 3x d will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are nhv5l50e a,pxqscz/ +placed near each oth l xc/,05v nzpe+5hsqaer on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively 5ntq1qvjmi1 n )ny(-vh,k; llcharged rod charge an electroscope positively?

  An originally neutral sf 2es8tb06 luogv*:x electroscope is briefly touched with a positively charged glaxtlb *s0us: f62oe8g vss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively c7,71 n wdu7sytedur*x harged glass rod is held near it. After the gld7t7u7 s u1xyw,nred*ass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaxxijp)4;- ,of ngp:rqves separate. Then a negative object is brought near the electroscope, but does not toucigrp qj4) n; ,opxx:f-h it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutra4 yj.mw2;wd ywl 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,yw;4yjw. 2dwm 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 constv /+ruptr v9g*,0uaiq ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i ;h50mx(cfo icit8r 4os larger in magnitude than the sr58(co 4hmi0ctx f;oiecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are pla.l u74 kiw7yo8j5l m zj.p o)kgk3ms7eced near each other on an insulated table. Which statement best describes the electrostat7 . m3 5yz7ewi j78ojklpoumlkg) .sk4ic force between them?

  Two charged objects attract each other with a certyujuwn*9 c.e +9 t(m2( aclpluain force. If the charges on both objects are doubled with no change u9 9c2au(wtc+l *em( yjn p.ulin separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcg 2b:t/bv2qx 9yc k8 ox8ugoz8es of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces? 8gucxoz:k ox q/8gy28b2b9 tv

  Two charged objects attract each other with a force F.u,p 56a(+rmpep7 v:o1lkdc vv 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 onec omv7:,evr p(+ualp51 pvk6d-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happenbxj1 4 b w,0yj6dbx5*h)hi:vl 5 wekles to the magnitude of the force on the proton if a second electron is placed next to the first0d:)h wb,jilhb6j1b y55e *e4w vxlkx electron?

  An electron and a proton(a bvv 4;wy.e z,wayh3dcqp40 are separated by a distance of 1.0 m. What happens to the magniy b4yv (pd,.zewwv40aqc a;h3tude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dium:0x.* c aao; nnx:(f(ub bxbstance of 1.0 m. What happens to the size of the force on the proton if the electron isa cafxnxbx.m:bo:n ;* u0(bu( moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squareaqjxsfl229s 2. 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 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 electrostqx9la22s2sfj atic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilatera sy*5i ff9+ tpbqine(7r1r 1dyl 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 itq p ry1+f(7*dsi r519bey nift. 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 39ctyhdso 2b4h 4zi6ja vector?

  At twice the distance from a point c,u0kgso7k : gwca./t+qm4: aaazc1zq-o cs 5eharge, the strength of the electric field

  Is it possible to have a zero electric field value betu; 9fq 2rb/ngz.a 5ry. c )ip-j3pv,qkpioll7ween a negative and positive charge along the line joining ,ppkajoz i9 pr2r 5q qg-i7.lyvnfuc)b 3;./lthe two charges?

  Is it possible to have a zero elp-qqk-hp2z9ohl *io74 ,gg yyectric field value between two positive charges along the line yhg* plygp--4h 9io ,oz2q7q kjoining the two charges?

  Electric field lines near psitive poinzq l*25 2o16sgi mwak(mc l v4hv99wyht charges

  The electric field sol+4geo5 nnw5 hown

  Can electric field lines intersect in free :.omws1 deea4qymgf ,af)a/zm+)sm 9space?

  A solid block of metal in electrostatic equilibrk- kxw52h9ytl6hh t7 ggsn( .rium is placed in a uniform electric field. Give a statement concerning the electric field in the bloc9 75xykws2g-6(hnh r lgk t.htk's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame ul2yev t4hx.c5m6gz( ters are each given the same charge, the electric field (z. egxvmly5t( 62huc4E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform 0,r1y r, xspbbelectric field is directed straight upward. What can be said ,1r ryb, 0xpsbconcerning the charge on the block's top surface?

  If a conductor is in electrostaticvu)l tori5(jw5+ 6u+risbld4fe3g 5v equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that isul f ,xvxbv3e1.(.nso grounded. As compared to the case without the hollow sphere, theb. v (uv ex.1lnx,sof3 electric field at a point directly above the hollow sphere has

State three propertiep(h sb8)fi 5am/au gz;s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron oc)n372 ;pu qem/ lkbm-qc7 ipis $e = -1.6 \times 10^{-19} \; C$. 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 )yaj--e o-fsrd1h r5qmC. How many more protons than electrons does this piece of plastic hasfdeoa) 1ry--jh5r q -ve?

  What is the charge ond pc h4-mxzf1r5u-.w m3lmlv4 1 kg of protons?

  An atomic nucleus has 1ujiij(,2p 8mvxqm /x a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatc3j5yoox3 u5:q l; wvved by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the m:o 35ux ;vowjv3c5lyqagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fore qcw1 yia;*9:k2e plece between them is 1.0 N. What is the magnitui:q ec 9y; 2aep*kel1wde of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arexf-rbj4 ytfp ,; .*vyy they?

  The force between a tpoq)8-rems4 de,n) 5vxo p+x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience3.w9ngmxk*cae cl l;e3-w8x ey0qq9 p a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fokmpge3a.39 qc lc ye0xl-*w 9newq;x8rce between them?

  Three identical point charges of 2.0 mC are p qj , m1fec*5)u a+sidzlc*p*claced on the x-axis. The first cha mjdczuiep1*cfa l qs,+*)5*crge is at the origin, 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 +2i)m;k vthe+4 gv6 x:jxxh35rq.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 which acts on the chargexi; x h4x: rgjqv6)hv5mt+k3e at the origin?

  Three point charges are locateda-6w;fg4 y icu at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00y4 uwa6i;g -fc mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and3 s1xg7g)eodk 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 positivegdek3sg) o x17 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 =x u;fasl( . i1tt/gkn+ 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5. tl( f ;a.ikt+/nxsug10 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at.rp ap8m.zm0as f6;iu (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charg8.z.6 umfasap;p r0m ie?

  Three identical charges of 3.- 8dv s-ke0**cb gpwqu0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?cwg*-vp u8sb0ekdq *-

  Consider point charges of +Q and +4Q, which are separattiz(d3 fyz5a qb )a+,red by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the eleq5irtd+byz 3 zaaf, )(ctrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 mjp (wuz):fti.*r: +b/vx t faq. Where on the x-axis can a third charge be placed so t w/ t::.fb u+*paqtrxjfzvi( )he net force on it is zero?

  Charge +2q is placed at the origin and charge -q uy d+ 2vyu9- gxol.ja)is placed at x = 2a. Where can a third positive charxua 2y.o)9-j+ v yugldge +q be placed so that the force on it is zero?

  A copper penny has a mapnb sfrp) 1u1mn ;w43hss of 3.0 g. 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 up against the force of gravudb58+;xq1u9/l llm.s m )ymyq .,vasai/mk sity by the attraction of a fixed proton some distance above it. xmy,my+q) .5sdu 1lssu /a/m8m v.qb;il9la kHow far above the electron is the proton?

  Two 0.20-g metal spheres are hun:k ptwt1 ,; :velqcob3g from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and thpc : 1o, t3tw;el:qkbve 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 isey 8r6y-l (n:h:j w2n l-avd1uyaasj) the magnitude of the electric field at a distance of 1.0 m fas8ual v:halyje -wj1)y yn-2dn(:r6rom the nucleus?

  What are the magnitude and direction of the electriw4cts dh lxrzf+z*y 1d7*s)irk 648 blc field at a distance of 1.50 m f*c6rs) r*ls hk7ib+4 4dy1xd8zzwfl trom a 50.0-nC charge?

  A 5.0-C charge is 10 m frk0pd73mj+ts:yde s*q om a small test charge. What is the magnitude of the electric field at the location of the testpd3kes ymdj7+s* 0q:t charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directionrh8 .l)/z9c dxl ig9dwb1 ,bk 1mhb5cl of the electril5g)rml,idbh zw1hx/ 1.9bc kcd b98l c field?

  A 5.0-C charge is 10 m from a small test chaz2auwk.pa c/yu+7j ;arge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of thj+ya7 /p2wuz;uac k.ae test charge?

  Two point charges each have a value of 3.0 C and are separated by a nxnufju-r w8h)ba:t 8hja: i4xtt+2;distance of 4.0 m. What is the electric fie )nh ha8f-tt:ju;2+nj wau84tibx r x:ld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m7xh7c:3pp+cjm o u mpe2pd2 n6C charge is placed at the 50 p u+dpe2 cpmh3j:6 77on2xmcp 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 metezy8dq0lkji,* +rr. yz r 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 therqky+*.lid0yz, rz8 j electric field zero?

  Two point charges of +3.0 mC and -7.0 mC al;, 2k obxi1z0kk gdw)re placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fieldb o ,kixwd;1g)2l0k kz at the point midway between them?

  Three 3.0 mC charges are at the three corners of/gj5mmjyw4 0 +i3r4/i1gpp3 a nsdjep 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 oj1m/id0psjpe+ 43 g4nwy/g ia m3pjr5f the square.

  Consider a square which is 1.0 m on a side. Charges are place/k-zp51y wj dzoz-.i rc*bp8kd at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at j.zbd/ oz r1y*-8c pi-pzwkk5 (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 on a charge of 5.0 mC when it is placed mfj+(v6ea 6vq in a uniform electric field. What is the magnitude of this electe v(6+q6fjamv ric field?

  A particle with a charge of 4bw:k1c 4ncecb+*u/( lrtdrl..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 )o-a6x)hdn jaw -:,hz) woexe in an electric field of 6000 N/C pointing downward. What charge must be plxox-da:h)w ,n h6a z )jew-e)oaced 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 x(csk)t4 63:zru4f jwnzfaakgc6 c +-.ppk3his placed inside a uniform electric field, and is suspended against the force of z)+4.a k 6saf-:33ptk xc cuw6hnfr4(kpgzjc gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries,lco,3mw1fkbyl(jus d e d-;- *zh/ni a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the s(f1 oc/mlz;- dn, u 3*,k wejdlyb-hisphere's surface?

  A metal sphere of radius 2.0 cm carri(h*bgx jk8/)e 8zbmzues a charge of 3.0 mC. What is the electric field 6.0 cm from the czbumzj8 ()e* b/ hkgx8enter of the sphere?