State the law of conservation of e *.pran +nx mgxx3uf+fux82c*b*d( gvlectric charge.

  Is it possible for two n2d+aokyezj wc7-9 nb+egative charges to attract each other?

  Is it possible for a positive and a negative charge to a0tazcnh:v gv z:9fsi6 pvo;; 9ttract each other?

  A glass rod is rubbed with a piece ofjz 6b/(l sxu4)6ro m x:bt2clc silk. During the process the glass rod acquires a poscx 4jb:uox 2c)l(t z6 mr6bl/sitive charge and the silk

  A proton carries a

  The model of the atom sh ;vw*jglf* hx*ows a

  A neutral atom always hk,.b mn +8 nk*4yopqmaas

  An atom has more electrons than protons. The atom (zh 5/d*ct ;l br)qlgrb/qs :iis

  Materials in which the electrons are bound very tightly to the nuclei are r41zn/:dshrlmt+. eamkmg9ju (e0bm ub ,9zb)eferred to9 zu:d(b.gem1trs, +4) 0mmjhz9b /bnmaek ul as

  Materials in which the electrons are bound very loosely to the nuclei and can is1n5r/kuqi 18 eyt ksw/6(bz chn)6z move about freely withic5 nbuiz zk6(ew6qkis/s8 h/1rt1n )yn the material are referred to as

  A negatively charged rod is brough ax,l)t bjjbs.xngv 4ql43.+ag 7niekc6.i(g t near one end of an uncharged metal bar. The end of the metal bar fart4 k.vlc)+j6,(b4sgij .n q xet.a7xlgb n3igahest from the charged rod will be charged

  Sphere A carries a net positive chargwd wmb2r;en(t1y on/z3 2 hyt-e, 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 statr3wyz (ndbyw-mt;noet/1 2 h2ement is correct?

  How can a negatively charged rowb7a(euos93u+a , su td charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posit8v0 gm0a66qb dol2bcq2u b us4ively charged glass rod. The ellqq 628vo 4bcd0m ugu6bs20baectroscope

  An originally neutral electroscope is grounded bri*o /hr dr20uxwefly while a positively charged glass rod is held near it. After the glass rod is removed, the elw0r d2*orx u/hectroscope

  A positive object touches a neutral efp 9o y8nsx+me j1q8e7lectroscope, and the leaves separate. Then a negative object xe89mse8+pon y1fjq 7is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placb6q 8eto0v mv,ed 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 st6ve,oq0bvm 8tops. 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 Coulo1c+m0 cfcbp3h e0 xjp4mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c 2fidggh-b+2msa1 a7vharge is larger ivh 2gm-71 bsdaifga+2n magnitude than the second charge.

  Sphere A carries a net charge and sphe3kj6fs0fh e; fre B is neutral. They are placed near each other on an insulated table. Which statement best describes the 0f6 e3 fkjh;sfelectrostatic force between them?

  Two charged objects attract es3 / /blwpmhperh4v)4 ach other with a certain force. If the charges on both objects are )wpr4she3pl //v4hb mdoubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attracti85 v9vnopv7r,qjym (e ve forces of ne pjyvv8 ,morq (597vF on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each5s--lyk/daezw :ovx 2l3cmp u;j ld73 other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation7lcks3;--: mejldpovw 3xd 2 ly/a5uz 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. What h5qr7a -u/hk4ar)q q qiappens to the magnitude of the force on the proton if a second electron is placed next to theura 45qqa/q)-kihrq 7 first electron?

  An electron and a proton are separated by a dista8 th+ 68kwbtn9n,ka y-x1kezunce of 1.0 m. What happens to the magnitude of1enhy t8ak-x tkk986+u zbn ,w 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 distr /0brr3 q(9ij-dz-kge+r ;rvk b z9nwance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protwbez9ir+b/grr(zd9qr0-- rvkkj 3 n;on?

  A point charge of +Qm*cgu1p/9j 3 rmrp93e k5 bnvd is placed at the center of a square. When a second point charge of -Q pedn/ vr5*mjpgc3u91mb39 k r 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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q btb824hz)c f e+ zn)tdis placed 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. Whztf)+4bd 8 ) he2bntczat 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 notfvar )rz;6o5 lx fhjai h)e7y,+-rp p, a vector?

  At twice the distance from a point charge, the stren0:;apcj:jbf w dh ;dy4gth of the electric field

  Is it possible to have a zerq ojup*8bwt9ro x 81 9n,obu6wo electric field value between a negative and positive ch*ow 6qt8,npx bo obw8r99juu1arge along the line joining the two charges?

  Is it possible to have a zero el se;ci- qbc*3mnrk- qvk-u+*oectric field value between two positive charges along the line joining the two cr+-*v-b-ceuo snki m q*q;3kcharges?

  Electric field lines near psiti 5*v(iqdeip1j ve point charges

  The electric field sh,c1th(yw ytdy-x32q xown

  Can electric field lines intersect in free s7.s *nvdr thy7pace?

  A solid block of metal in electrostatic equilibrium is placed in a uniform eloc,w) 1,.2y t* ujey(ikhb1md3nmz .s * mhlwmectric field. Give a statement concerning the electric fieldme oy,1w3,*2.h )y(*scbj.in1 dutmwklhmm z in the block's interior.

  If a solid metal sphere an2u/x:zyf-qyyn )g 2ymd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between2fxq mgy )yyy 2/-:unz the center and the surface is

  A cubic block of aluminum rests on a wooden table1e 6kmybl; o2/7z5q lqw+xzuy in a region where a uniform electric yk+ ; zq/m6zu72y5wbqll xo1efield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium e;i y7;a lctv92-o0/tz qm4* gvlooai near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tiyh c* ixc4c+g6vhxv 5;5tsf 2hat is grounded. As compared to the case without the hollow sphere, the electric field at a point directly ab 5ivv24+ csgc 56i*;chyx fhxtove the hollow sphere has

State three properties of conductg c 2help72f*k)7 isllors in static equilibrium.

State Gauss's law.

  The charge carried by one elecj10p tq, 9x:gbiwu se.tron 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 a:i/1;8)sb8 ykg uo4eiaoj u rcharge of +2.00 mC. How many more protons than electrons does this piece of plastic havau)a8 1or 8gs4u;/ oe:jk yiibe?

  What is the charge onf 2ukdhbw2 c7d */wpy;,t n8dn 1 kg of protons?

  An atomic nucleus has a charn9pyia6 y2yf, x ,wf9mge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1glo gm0zs ;b7g)6co8d.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electg7zdmo6 0 o)lbg cgs8;ric force between them?

  A 1.0-C charge is 15 m from a second charge, and the f+d3ju fy yye*9z*fm,qorce between them is 1.0 N. What is the magnitude of the m jyy,u+fe *fdyq3 *z9second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theia qr ;l),8.ap sm3rfi9mye0uy?

  The force between a ryg g 8h2d:h:*inpnupr:o6n ,l qy3r- $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallz **r: 1j8h qevf-g ymuw/)a3vngcs.py 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm,cr aun/ef*.g83 qgm1sp-z*hyj :)vwv what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on q, j;dkr 6n.msthe x-axis. The first charge is at the origin, the secmk6d,qj.;sr nond 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 pl-uenm ut f8 *qlo6k7kw-3q1u taced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x =wkft8uo ku-3 qm7q6t l1 n-*ue 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 the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at ,mw7zgy ipg;1jc:r* zx = 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 g *;z,g r1i7:zwcmjy pthe 3.00-mC charge?

  A point charge of +Q is pl 5ev.dk6f lhxmxp+/;h.us 4p caced at the center of a square, and a second point charge of -Q is placed at th4.6suxxh;vm.c pe/kp+f5 dlhe 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 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 = 5.0 nC is r7* ksjw5c21c d zl;n o0 vxye29xr+kdat (0, 0). What is the magnitude of the net force onx;yd5cec2ok+*wd 91xr0lsz v r k7 2nj 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); Q3 = 5.0 qt3)3p 9 zao2ovmq/evpb-f-mnC is at (0, 0). What is the direa-)mvmoq3/ oqbpf3pev -z92 tction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq6ir f .j/gw9yx/ sv9iuuilateral triangle which measures 30 cm on a side. Wxr9yj9 w .fsv u/gi/6ihat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatnky)* p;77shqu l6bg ted 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 ;hkqpn *y ug7l7s t6)belectrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9a pwav,i3ks9 84qnvw* .0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forcwpv4i* w vqasa 9k38,ne on it is zero?

  Charge +2q is placed at the origin and charge -q is placeved +v6 +ja6ned at x = 2a. Where can a third p +v ea6v+6edjnositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total:d/ n1x pt7sz1tz(omm 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 ao)x p./sb t+wmttraction of a fixed proton some distance above it. How far above the electron is the ps bxwo+m .)/ptroton?

  Two 0.20-g metal spheres are hung from a common p6ssb gbd:ug7q +3mpc,oint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrom,gq3+spbc 76g bs:u dstatic 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 magnitu)pe l lq;/e)omde of the electric field at a dist /m)pe;loq)e lance of 1.0 m from the nucleus?

  What are the magnitude anak,byzs )/3 ijd direction of the electric field at a distance of 1.50 m from a 50 3kis/ajb,z) y.0-nC charge?

  A 5.0-C charge is 10 m from a small x6:v wes0p tv9test charge. What is the magnitude of the electric field at the location of the tesvp:vte 0 s9wx6t charge?

  A 5.0-C charge is 10 m from a small teai s9vwl*b,9f st charge. What is the direction of the electrifs alv,99w* bic field?

  A 5.0-C charge is 10 m fm;syofxzy m 5 www4/or6cm ;5:rom a small test charge. What is the magnitude of the force experof 5w4c wmmym6zw;5ox /y;r s:ienced by a 1.0 nC 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 distantps/k3 e05hyi ce of 4.0 m. What is the electrici3ke/ps0h t 5y field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a .1yetpw j0- citvhw 22meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at i2e.wt yp2j -hwv1 tc0the 30 cm mark?

  A 5.0-mC charge is placedw kcyw zqidz9a.e+x7 f0ul(;1 at the 0 cm mark of a meter 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 thw.0(qy zzw9lx1ac+e7; ik d ufe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at pkc7oaf:9yv o1r3 c9:,;o+ihlyq jec x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between th cq79c; 3:c vifa9e+lj yoo,k h1yo:prem?

  Three 3.0 mC charges are at the three corners of a square of sdc,gl x32bb uwtu5;) uide 0.50 m. The last co,dwu5b xlt;2ucu 3bg)rner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0a97j0crpygh p (k3d5f m on a side. Charges are placed at the corners of the s p( dkha90yjf3pc5r g7quare 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 electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed bpk 6+kc2f 0ez/zp2va in a uniform electric field. What is the magnitude o62pav/b pkc02kefz +zf this electric field?

  A particle with a charge of 4.m-/xq j3q1c 30moezdw0 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 in an elc(jdg)rwz 19kectric field of 6000 N/C poin9dzwrk gc1() jting downward. 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 bm, h8gi:z)0.tg onbjiall is placed inside a uniform electric field, and is suspended againstz:gt0.igi nh, b oj8)m 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 +2.0 mC. What is the u4cqld9w3yk 3/u6hg bmagnitude of the electric field 5.0 cm frow g433ul uyb6 kq9d/hcm the sphere's surface?

  A metal sphere of radius 2.0 cm carries a k/q tu 8ccs;g-+bu/i;prw6rvcharge of 3.0 mC. What is the electric field 6.0 cm from the center of the spherru/6c-;b g c+piuv t;/ qswrk8e?