State the law of conservation of electric chargt )qqc5k -kn 7qhhi83j--weade.

  Is it possible for two negative charges to attract flq j6(y:z f3u:c ddf+each other?

  Is it possible for a positive and a negative charge to attract each orcvnu6(p, i9 y2n 6qdrn0k x(qther?

  A glass rod is rubbed with 1( e2u5vbotdwnz + c1; p.hexoa piece of silk. During the process the glass rod acquires a positive charge.u+w5;eh x p2(ooe1ztd cbv n1 and the silk

  A proton carries a

  The model of the atom sved; eu+87kl7w4*33dv bvu22d 9 a xycmkrfnbhows a

  A neutral atom always ,jh4g*rio *pya *h33e5auee y has

  An atom has more electrons thgbd 2p:et24c ban protons. The atom is

  Materials in which the electrons are bound very tightle 1 /me1hy lij+-m:trxy to the nuclei are referred xt1m:y+1e-j /lhmire to as

  Materials in which the electrons are bound vdwre4*z)e m/ kery loosely to the nuclei and can move about freelyk* emzwe/r d4) within the material are referred to as

  A negatively charged rod is brou qv35xnfwr.8w 4dx 6v*ph7e sbght near one end of an uncharged metal bar. The end of the metvvew db*f5nxx 8s q3r4wp7 .6hal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. xo1 yn-ang 0 3t*9ync bdl19ggThey are placed near each other on an insulated table. Sphyx1-gdnnalb ng ty391*9 c0og ere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedg 1iumsgl.z(.(4hhq1 c:oloh nbr+k+ rod charge an electroscope positively?

  An originally neutral electroscoj3el df5b (4 unky)v;jpe is briefly touched with a positively charged glass rod. The electroscf(jbelud ;jnk4 v y5)3ope

  An originally neutral electroscope 5+ jr/n2bbc qwb08o : kunqb 5q6gga0bis grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the wqq g58gub2j b bnnb/bo0:q+560rkca electroscope

  A positive object touches a neutral electrosn+; ksma42cjv .fsv; ccope, and the leaves separate. Then a negative object is broughv; m.+c42nfkssa c v;jt near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged o8+r1mstp5m9 kr6 h18x irstcnbject is placed 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 stops. The first ball rolls forward, but does not touch the negap6mn xrri ssk18c1m +t8t95rhtive 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 4gb dzipr8g56ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects p)i. hwhz/b al xtplqu :xr1v., *p/x)are separated by a distance d. The first charge is larger in magnitude than the second c)px ui)l.b//,*l. zhxwap1qrtp: xhvharge.

  Sphere A carries a net charge and sphere r ya;lo;us1rs1hd5wf4,xd e- B is neutral. They are placed near each other on an insulated table. Which statefd5hal;1ud ;es ox1 -syrwr4,ment best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. ,pf-jgpb-+s ajw-z une,4y 0 7p.qndh If the charges on both od a,bjn.+p gspw7j-zp, qfnh0--yeu 4bjects are doubled with no change in separation, the force between them

  Two charges are separated by uftk+wo4kk3iyis; s+:lz;d3 a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distantf+zis3u w: kdyo;;34iksl+ kce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a for6u)pqih99zpzo g .yq0 ce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distan yh iq0.gz6)zqu9pp o9ce between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton a,r/rmz6t lo(eiuz4n g0m ;,ncre separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is pr;z6e,ng,4cm i/u 0(olrt mznlaced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What 0lv9edy q-kwnw( 1s,jn1huv 9 happens to the magnitude of the force on the first electron if a second electron is placed next to the prwkqyl(- hvv,9w ds 1n1ej 0u9noton?

  An electron and a proton are sepaw* br52qbhg:o rated by a distance of 1.0 m. What happens to the size of t*gb5r:q2bhwo he force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q qa7twkbjf ni-/0lo43 is placed 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 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 acinbfk/tqo0lwja3 -7 4 ting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centr y hei0s zqao-duu5te8,7*a 7eoid 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. 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 ototu eaea7-5 i7s ,hyeq du80z*her vertices?

  Which of the following is not a vectx5 doa -n(uaa0or?

  At twice the distance from a point charge, the strength of the electf 9s9(g;ubk,r *rkw lqric field

  Is it possible to have a zero electric field val.e)rsiv gbww4bt698*gb e 0ba ue between a negative and positive charge along the line joining the two48.wtbav)sbie* 09rb gb weg6 charges?

  Is it possible to have a zero electric field tx:2wuo+4h0hxpg( i)spdk0 n value between two positive charges along the line joiningo h0t d:s(p2pguxh)i xw0n+k4 the two charges?

  Electric field lines i a7;9tits,egz 3xt4 wnear psitive point charges

  The electric field shh ob19ohi5hw9c .d:ce own

  Can electric field lines intersect idlvna h5-, lgd is;i),n free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifwd5 7zj+bpa k*3 h/,xpp b;xdqorm electric field. Give a statement concerning the electric field in the block's intedqjw+az,*dbp53 x7;p /p bh kxrior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are/ 9 ;gzh/tkndm each given the same charge, the electric field (E) mi/ /9dnk hzm;tgdway between the center and the surface is

  A cubic block of alumipr 1.t )2u,tdpz1hgrhnum rests on a wooden table in a region where a uniform electric field .2hut)p1,th1rdp gr z is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nj+ dnjbnf8t/w c 3.i*lht5zp3ear an electric charge

  A positive point charge is enclosed in a hollow nkr1r96wp0q o o./ xwametallic sphere that is grounded. As compared to the case without o9kxw0r.6aw o/1 qprn the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of cond y+v gn6r9oj/uuctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is n ga.;+tds5b6s *llm v .mmpig+y uv78$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a ngte0-k4kw e 6ss+6lopn*crxn*egu g6 ;j 6;fcet charge of +2.00 mC. How many more protons than electrons does this pwgl6n0g*e;cs6rjx s+ ; ec-pf 6o4k6 * uknetgiece of plastic have?

  What is the charge on 1 kg of prhp lx h67vv-w rh5b3:botons?

  An atomic nucleus has a cha x5.qcdjca/9k3l2lh frge 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 v8 a0c4x km87c2gzzh.d7pu:ls hqgx;v alues of 2.0 and -4.0 mC, respehlczv pzg48787;. q 2 x0cas k:ghdmxuctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1 +x,o,;vt zgzh.0 N. What iv,+zxt , ;ghozs the magnitude of the second charge?

  Two 1.0-C charges have a force between them ojza:cku l ug d3kyenjx-tjv2: e.,;6n/;wi(yf 1.0 N. How far apart are they?

  The force between a ulqqim+qeia5a71 5l 5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experie:n1 v +q,q o4:hvfvazsnce a 1.0-N force. If they ares1q f:qz,nv+ ao:4 vvh moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Tn*a.zt 2bf.4c h7 9 hxt/cogqohe first charge is at the origin, the second to thctz*t7 a/qc ob 9hn2f4g.h. xoe 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 p:6pc;bi cyu -dlaced 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 magnitude and direction o:d; u -pcycib6f the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following -;k 7kvvknj+ p.kism: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 for;s:j+i vkmvkp-.k 7knce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point c8 4,trp)9dqm a p0jwbsharge of -Q is placed at the uarbdp8,w0m)js ptq 94pper-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); Qf3m9sxzn0;;o+ m jgzw *iwu k03 = 5.0 nC is at (0, 0). What is nfij0ou0;w mgm;zk z93sx+ w* the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,hkron89, c e6f 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0,hrk6on98cef , 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are ivpxpi ./oxm,i / 4 ,g0hlmas0placed at the vertices of an equilateral triangle which measures 30 cm on a side. What ismig/ 4x. 0 omixh,0ppls/ai v, the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated.: 5h-t q4g uvkbwhan2 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 t 4u. bg qakvt2hw-h:5nhe electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C cbl uj;ml7j m2 bm-qswp04+fin 4p2n,z 8gxe4 hharge is at x = 4.0 m. Where on the x-axis can a third chlem4g2 7qf4;unlj ,h-bpzij+x m0w 2 p84m snbarge be placed so the net force on it is zero?

  Charge +2q is placed at the origin uz/nj.mn6o0y and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the fo6ozm .n/0yjn urce on it is zero?

  A copper penny has a mass of 3.0 g. A to4 s u7+kb3umkqoz8b6ztal 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 attr2-1p c 2trw (cwttw4pzaction of a fixed proton sow(ctwrtc 2-2w14 pztpme distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commfnl 0 mojt44gb2t(4k eok2ro-on point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threa2-t kfo m0kg4 4 l2ooj4rn(tebds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magn.4sf*ogi lk (xzk +:8ltf420ab j xfehitude of the electric field at a distance of 1.0 m from k.g8a jkox fl (lt4 b+02*x4sef fiz:hthe nucleus?

  What are the magnitude and direction ofk2unqf.pp 00a the electric field at a distance of 1.50 m from a 50.0-nC charge?p fp0ku .an0q2

  A 5.0-C charge is 10 m(8omuyib r( 0w from a small test charge. What is the magnitude of the electric field at the location of the test ch iowr(m 80buy(arge?

  A 5.0-C charge is 10 m from a small test charge. What is the directia4hyc* -;joao on of the electria * hocya;4oj-c field?

  A 5.0-C charge is 10 m from a small wgm c2 mtq 4sbq9+09fu/, srrltest charge. What is the magnitude of the force ex+q4m9sm2w 0 c,gq frs/9bturl perienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each ha u v6o :2en u6i 8w+y: hv.zulex3zrrr454lzlrve a value of 3.0 C and are separated by a distance of 4 ewrlie.v 6:o3+ulnlrzzzrv258 6: u4rh4x yu.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm np) at1gbs aa clzj,5vq 07.-.ugy si3mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mar).gj5s v,s aa7pqc0yz3binulg.-a1t k?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.zs +u:d 9g.i- iwmazkqx97h:h 0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero? i h-:g:iqxadh 9km.z suz9w+7

  Two point charges of +3.0 mC and -7.0 mC are fnsu oxele*: 2) -oqs3placed at x = 0 and x = 0.20 m. What is the magnitude of the elefxens3ol o- q)s:eu*2ctric field at the point midway between them?

  Three 3.0 mC charges are at the thre x/o2s g*(dy(p6bnsx ke corners of a square of side 0.50 m. The lastd*n sxg2soxk yb(6p /( corner 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 placed at the crp1-jp fwe 7-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 is the magnitude of the electric field at the er1cpp- f7 j-wsquare's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed6 gz h6v*qouwphhs v5 z6f4n7u e;+u;q in a uniform electric +6vh6h6zqz;;w hq n5 47svuuge u*opffield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a *zu) up1/wyyqmass 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 qio/, vx7wzi8g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspew8z7 o /ivxiq,nded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is.pz8g ck4eg i-ze; ,ocb g 4:yyac3z+v placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric cebc, a y3z-o8i4. +vg: zg;4yegpkzcfield?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What *a8 iioegj nmm3s(2 n/is the magnitude of the electric field 5.0 cm from the sphere's suraj*ni e8 smmi32/(gonface?

  A metal sphere of radius 2.0 cm carries a chargef*8nyr ixq) );y-ux5t)xty lo of 3.0 mC. What is the electric field 6.0 cm from the cenf y*y-xlq )oit5 xtn;ru)8x y)ter of the sphere?