State the law of conservation of electric chargqe07* ejvyb wzo6+ti 7eg-d/ee.

  Is it possible for two nth/k,*jq r( jbd3 gy,jegative charges to attract each other?

  Is it possible for a sz,fmhdym3o k, xj33ghn.u )-8z n5nwpositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. ac8rm)u km50c jj)c4t q*qpp:l j :z;k During the process the glass rod acqui8q)tkm:q )ccr4 j05pcka*uj j lzm;: pres a positive charge and the silk

  A proton carries a

  The model of the atom sh qiyza7ajzrsd3;: 4qc1 -d1gcows a

  A neutral atom always habo/2kpzzlai hgy */0 2s

  An atom has more electrons than protons. Tf,;4ak btx x97sk2 cdcvs 0j:she atom is

  Materials in which the electrons are bound very tightly to the nuclt lga3(gon.s :ei are referred to aso 3 n:tls(a.gg

  Materials in which the electrons are bound very loosely to the nuclei and cdqk2nk ib0jt i26/zb4 an move about freely 24d k 2/tzq6 bikb0jinwithin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metai;dp7w l:voi -1hsrlq2jzem7)r tx5/ l bar. The end of the metal bar farth illx5oes1 qr;w : m-z/jvdi7ht2)r7p est from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ah9a,fd w4/ cu1 bu9li5g8xd c95ixbcure placed near each otbu 859 iluf b,dax/hc91wxcu594gdi c her on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cb4.ht3pgd4h p harged rod charge an electroscope positively?

  An originally neutral elehri 5pz. s8km,ctroscope is briefly touched with a positively charged gkrip.8s 5m ,hzlass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positet5a2e zv+c1y ively charged +zca51eye 2tv glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a n h 3qf 0an b0xww1fn.+fdsl9t3eutral electroscope, and the leaves separate. Then a negative object ff+xh0s0 ladn3 b.19nqwf3w tis brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulyu7hawla1x 60 / 6/i4cgx xrm;zl(ppcated table. A neutral metallic ball rx(/ 76 1gi0zpycxxau;rm6 l 4 lwc/ahpolls 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 either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Co ese:oy bapgu95a/+8 nb8ekx ,ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c1.au s5/ 4st kvvmeju,harge is larger in magnitude than the second chargusk5v ,svet/ma. uj 41e.

  Sphere A carries a net charge anyy7-77g lqq 2ooekna9 d sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between7 oyye2 kg- 9lqqon77a them?

  Two charged objects attract each other with a certain force. If the chargesg k ,7wjso*t9m on both objects are doubled with no change in separations9m7 k,ojw* gt, the force between them

  Two charges are separated by a distance d and exert m.ws8bpk5exl9*+ubvmutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what xl bvp+5k*sub89 me.w are the new mutual forces?

  Two charged objects attract each :a xy zk9w)8ty,ruog8 other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distan)yok9ru 8:w tg,ya8zx ce between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a pronfxn +*k 2./yqqwd9/f;+2dlkf fy oyuton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the .9;dyuk f+fyl2yod+qwx/ n2*/nff kq 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 happen4obnhtodnw72( + ) msvs to the magnitude of the force on the first electron if a seconh)(w24msov to bndn +7d electron is placed next to the proton?

  An electron and a proton are separated by a diqw7tp0ysz ,c.s b:pnjb/ 49al stance of 1.0 m. What happens to the size of the force on the proton if b,ct lw n9y0ab:. j7pz/qp4 ssthe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is planl m5aq;*h3eevm a my::b5vq/ced 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 actay*eaml55n/bvmqe3q :;h m: v s 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 trianglk2x )sp uhf0c/e. When a second charge of +Q is placed at one of the)fh2/kxups c0 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 a third charge of +Q placed at one of the other vertices?

  Which of the following isfxh*y 0nd,* /bn 7jafbo 6:rtu not a vector?

  At twice the distance from a point charge,ya3ze,o-3gm cc* j7rz the strength of the electric field

  Is it possible to have a zero electric field value betx)xf( pbgyf 9u.proa;2ken8)ween a negative and positive charge along the line jka.x)x(ef gru9opfb 2 np y);8oining the two charges?

  Is it possible to have a zero electric field value between two positive chargehyyr-ef r .q .ro;hr+3s along the line joining theer;. o.y ryf+3rq-h hr two charges?

  Electric field lines near psitive px zpo 5yq w,sny+/72cyoint charges

  The electric field shownx5 a 5:*f,zu r jdayyoa-:ydi:

  Can electric field lines intersect ino0t f njs86;z swj2b;w.hn4du free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele3 /n;v*jg0cdzb.rdlg fiy q.gyw 9. +vctric field. Give a statement concerning the electric field in the y+.g*;gddr0n wqg9l 3cjyv.i vz b.f/ block's interior.

  If a solid metal sphere aa j+c,xad0 y8;bbbevl ,0 fz7und a hollow metal sphere of equal diameters are each given the same charge, thezu,,+cvl8 0fbj ey0 b;a a7bxd electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a rev7; sknibcsfquj /rwv2m/;d - 2-64b*jufwt bgion where a uniform electric field is directed straight upward. What can be said concerning the chargesdb iv / j/7-;js2- ;2qku4nt bcmvfb6wuwr*f on the block's top surface?

  If a conductor is in fsu)ym(fz9e *electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gomnrk s-kn9 j1u2bs 3xveynr5*0jt ./ rounded. As compared to the case without the hollow sphere,j0ykes -n/rm5vu2 jxnob9t3k n *.sr1 the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriuren.5vspwz2 p;l0 sn7m.

State Gauss's law.

  The charge carried by one g.ma(y 0xs+mfelectron 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 y z-4tmfntv e5(klfc./0 e+gor num8;charge of +2.00 mC. How many more protons than electrons does this piece of plasrnnte ey5mgf4ck;/0tflm+ z o.- (u8 vtic have?

  What is the charge on 1 kg of protons?eelzv5b pbk 4o.-i,0los,* sw

  An atomic nucleus has a chars.*1v ;lr kmw96(fxl-xome + mjugpy 1ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separx c9+lo9 l)udzated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between tz l xd9+lc)o9uhem?

  A 1.0-C charge is 15 m from a second charge, and the force between i,5p4svpr lj1 them is 1.0 N. What is the magnitude of the second jpirl s, 1v4p5charge?

  Two 1.0-C charges have a force between them of 1.0 N. x.kz8g6cgg4 ggx4sw, 3p9pf-0ru p z v How far apart are they?

  The force between a * cpwzl/ 0nmpkgi 7fi1tr 5f46ncwu9) $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialli:f:kx / j .viaw ;p0r4tp9so9jcdh/ vy 2.0 cm apart, experience a 1.0-N force. If they are moved to a new seacrw/x :ii; s4khpvo.9tj:/ vd f0pj9paration of 8.0 cm, what is the electric force between them?

  Three identical point chargesw)j / a/hxm4 mk2h6ood of 2.0 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 are the magnitude and direction o)a/xm6dwh4jomk h / 2of the electrostatic force which acts on the charge at the origin?

  Three point charges are pla/w1 /i kmgjn2j;3zttyced 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 mt;jwz 2 /g3yjktn1/ iare the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at xdg444+x: 3u ltc hnz4;zm wqlc* :pdciw2en,o = 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 force on thegddn4zxqi,+ m:4ucnt4 oelc* ;wc p:zh2l34w 3.00-mC charge?

  A point charge of +Q is placed at :*w2d8l;3vthb* l,p0sd up rac x4xpathe 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 positive charge at the center. What is the magnitude of the force that acts on the center chappxdrwa2:dl8*, apbu 3s vcxt0h4*l; rge 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 y d2s*8 2bm h33zgcx tpnpra)1nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the )1p*mp hy32drx 8tzcg2a3sb n5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at.. j2gshj uo7q (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the n2jg.. jh uo7sqet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilat4m yl7)kbix 0yn-r, d )e(ypvleral triangle which measures 30 cm on a lxie)d 4y)(,vmk70 nlypby -rside. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and xns( .gips w)++4Q, which are separated 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 ss)(+ wx gnpi.the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and p( hulx2r;ke7 9ry8iua +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the neuyr rpu;2i( hx98ek l7t force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where can1ckj96oz :m wi;i 3edr ajok9i;cei 1:zw6r3dm third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. p,x 4w8zc.n pjuy26 o: t5lnanA 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 gg/xy309gd- zifrc3 h sravity by the attraction of a fixed prodfyh3 0-sgcx9/r3 giz ton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comm6i4 ,tqyc y:u iurz:0pon point by nonconducting threads which are 30 cm long. Both are given identical charges, and yc u4tri:uz :6q,i0py 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 magnitude6m n1zoljs+s, of the electric field at a distance of 1.0 mzjl6mso 1s+n, from the nucleus?

  What are the magnitude and direction or j7nun+wb 70kf the electric field at a distance of 1.50 m from a 5+ nk7u7jbr 0nw0.0-nC charge?

  A 5.0-C charge is 10 m from a small2d)b2,kne9 hly7k5 q wcs9gyu test charge. What is the magnitude of the electric field at the location o95s2wqck ,dnyheubl29 g7ky)f the test charge?

  A 5.0-C charge is 10 m from a small test czz, t*1;kpjxww r -man7.a)dsharge. What is the direction of the electrma.; at)7xp, zzwdnw r 1ks-j*ic field?

  A 5.0-C charge is 10 m from a small test charge. What isi24(o /th 2qxorvht+e the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge t4xeh(hqovi o2 r2/t+?

  Two point charges each have a value of 3.0 C and are-1(rtnlzd3rngzd)bl a+ 3(ob separated by a distance of 4.0 m. What is the ele(b)rl l-3zgn n+t d(ozdab3r1ctric field 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 mC ;tdz run02a3gh1 jovaq;l plfjs9* (5dgek44 charge is placed at the 50 cm mark. What is the elee5;uvdagrk*sjl1 4p q(0d9fohzt32a 4j; nl gctric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a met -qmd /uho bf- -f,3voe27oohber stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges m27 o f-qfeh 3o-,- oho/ubbvdis the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x kmln ))- 0*n-snsx0 ) -d81yittgguoz scml: y= 0 and x = 0.20 m. What is the )t-0 m*yn-i -)c sz :)ly mnsslu 1ntg0gox8kdmagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squar4)+ga wqvvc koq -5 h5t ou29yqxf.b4ge of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric -bg ha.qgt+k 25o54 fvo9qxc4qw)yuvfield at the center of the square.

  Consider a square which9w-vol*e p r 8ibg*ae7 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 isw oa *b8-e7liger9p* v 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 a uniform electr/ b dz5v9h-9sh;a4sw2ls qblt ic field. What is the mag9q-dzvsh2l5th as49w /;b slbnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass oax6h.; zjgl c5f $5.0 \times 10^{-3} \; kg$. 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 fielllf i)g:2q4 a uhns+v.d of 6000 N/C pointing downward. What charge must be placed onnl2: g)v+ hqsa4iulf. the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00).n74omftmn ff;t bfic-1 p/az4n6 mz nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude aczbio f m1; a764mf4nt- zn)tp /ffn.mnd direction of the electric field?

  A metal sphere of radius 10 cm carries1 z4.mt,m2;wsopzl rcn00aqc a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfac mmw24 c oqr .0astn,z1lp;z0ce?

  A metal sphere of radius 2.0 cm carrihv( ko9h4;(birarg; qw(9h zfp en*- jes a charge of 3.0 mC. What is the electric field 6.0 cm from the center oh ;z(4iqe; kh vn(f(9wh-*rprgbo a9jf the sphere?