State the law of conservatioms3r za1s3t7 dn of electric charge.

  Is it possible for two negatbxvxen26w4 s4ive charges to attract each other?

  Is it possible for a j7 n9vmkdj 604pep )jw(m(vfdpositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During t2g 4,w-rb+ kafzn)d)v-cal g the process the glass rod acquires a posibac2rtg+g 4-f )-a, kvl wdnz)tive charge and the silk

  A proton carries a

  The model of the atom showsby0e2rmlyzdn* yk cl9- -l.r0 a

  A neutral atom always a577fvjnqku,+k 1kgrhc z:v/has

  An atom has more electrons than prf4r/zsbooy/nx fg(n5p+e91kotons. The atom is

  Materials in which the electrons arez1u/m svx4/ldqm p8ls,n4iu)7s ,irm;/dvks bound very tightly to the nuclei are referr4 n/isilrs,/ ; ,)pd8x7/1udvmssuvkm 4lmzqed to as

  Materials in which the electrons 29x; cpl.hvtpare bound very loosely to the nuclei and can move about freely within the material are referx2h9 ;.cplpt vred to as

  A negatively charged rod is brougqnjecsd,kw0l9ec: s 1xo 7j0z.69 bliht near one end of an uncharged metal bar. The end of the metal bar farthest from thek,j01wczi9s9jbcl :lsx dnee .q7 06o charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is np9fo-sbls qkf e5+h( 3eutral. They are placed near each other on +fe-( s9kso5p3fq hlb an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscop4b4, v /knjvna 36pamge positively?

  An originally neutral electroscope is briefly touched with a pb/ *e:fp l-ctcositively charged glass rod. The elecp*c c/btfe-l :troscope

  An originally neutral electroscope is grounded briefly while a positivel9 z.1 arf7van)mj re76e95 6ugvxogqzy charged glass rod is heldg. fenejmga9 7vz6z6va1)7 rour9q5x near it. After the glass rod is removed, the electroscope

  A positive object touches a neu ks hzwu45j(-dtral electroscope, and the leaves separate. Then a negative object is brought near t5u -wsjdz( 4hkhe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. qz(v14r:3 pn1iki ncz 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 (rz1 ik i1p:v34ncznqrolls 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 thxcmfpa25j ..a- umri:e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by ag ;phj m)a+ 8ie:xvv*z distance d. The first charge is larger inie 8phvvzg*+xm ;) ja: magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neaj)g +y + r4texhy(b0tbr each other on an insulated table. Which statement best descriyrext jy+)h+bt0 (bg4bes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges 3 541wkejpkaunpp7 ;gfdz4 :t0f;jgqon both objects are doubled with no change in separation, the force betk34: u z5w;ppjj0 fngp ;fke at71dg4qween them

  Two charges are separate 5q:rfpz 8jfe bl3p(t8b (d/gfd by a distance d and exert mutual attractive forces of F on each other. If the :l/zj8(fgbr 3e5 ff (bd8ptpqcharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forc5*jt wgg610 p..grust rgzm-ue between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reducedw *z5g6 10j-sgg mttgruu.p. r to one-fourth its original value? The force is now equal to

  An electron and a proton a+jk(p8l-m03mt exko8yau7ljb 3j 9psy igp31re separated by a distance of 1.0 m. What happens to the magnitude of t(le0bs33jaj39kyp7 l yk -xm8u +p8j1ogpmtihe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dis2oo jb611c.nf.j9ad+fcr y fxtance of 1.0 m. What happens to the ma.+ocb2aof6cf.9 jxd1 y1rfj ngnitude 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 distan1bl w8 6jbc- )gyquw2nce of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.502bwy l68n1) jbwqg-cu m closer to the proton?

  A point charge of +Q is placed at the center of a o:f,, geivci 1square. 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, identico1gc: ,fev ii,al 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.l94aw ssgf jj*8k -fe centroid of an equilateral triangle. When a second charge ak84 j*g-wl 9se.sffj 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 other vertices?

  Which of the following is not fh)ah)5 y*; q/ e4mox ,l;ceo6hxzfly a vector?

  At twice the distance from a point charge, the strength of jul r 3py*kt2)the electric field

  Is it possible to have a zero electric field value between arvlm0c fpd 6pr2 ,;.5eztu14zc:klyj negative and positive c.c4p0ly j6m,dv;f1rc p 5zze: u2l trkharge along the line joining the two charges?

  Is it possible to have a zero electric fieldyz3):u q/rooy4cstcpd d / t4. value between two positive charges along the line joining the two chargesq ctru/4 .o zc:dpd4sy/3 )oty?

  Electric field lines near psitive pk/8xfu-f( q 1ev+sevpoint charges

  The electric field shown m7mak5 q0r0/k-qe:o9vwrd xk1 6 mmhb

  Can electric field lines inters xn+vcj:hc3* 1-ua09fkma;r hwh8yvhect in free space?

  A solid block of metal in electrostatic e0s3 hedot-;m;wpszs .eb *ez4quilibrium is placed in a uniform electric field. Give a statement concerning the electric m-; eobp e 3s0wz*.dtz4es h;sfield in the block's interior.

  If a solid metal sphere and a hollow metal sphere o u svt2d370qpof equal diameters are each given the same charts2730 o vpdquge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tableq 2s56thvtxv 4 in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the x 42st65vqt hvblock's top surface?

  If a conductor is in electrostatic equilibrium near an electric chcz)*2ytwphc t:95ix sarge

  A positive point charge is eh 3ptj8 :twg;tnclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poitg 3:j;tptwh 8nt directly above the hollow sphere has

State three properties of conductors in 6f59 vhqqvq,pmwu/k) static equilibrium.

State Gauss's law.

  The charge carried by one;iwze, n- v5 e8crnbaj7+9ztv 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 +2.00 mC. How many more protons tb vr5x-ky/8d gm+ex x,han electrons does5x-x 8gk/mv+br ,d exy this piece of plastic have?

  What is the charge on 1 kg ofpbsu:h wz5/y5v0r hk- protons?

  An atomic nucleus has asmfrf;l,h0z; sqwg2 pca 6i1; charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separa 8k8wxdasly1*ted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of thea lwk*ydx 881s electric force between them?

  A 1.0-C charge is 15 m from a lc82h,u; r s7 y 5c3 qsbb1uxoub.k(axsecond charge, and the force between them is 1.0 N. What is the magnitu(ub1oq2,u;a5 sb y lub7c xrh3xk. s8cde of the second charge?

  Two 1.0-C charges have a force betwc7z1i f nm*0ig 6ai9pgeen them of 1.0 N. How far apart are they?

  The force between a ;gqknupux ly65 lg)- 7gzzk(5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialna0p;9oja h2h ly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 82pao9 ;hahn0j .0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placndow+hh6ce0u, , ap( jed 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 ofwha(unp 6oh+cd,e 0, j the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed a)k7 h -2pxlrk0oy/u ;dr-rla-exmv*xt 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 the orige r-/ hu v-oxlxm-x r;ld7*a k2k)0pyrin?

  Three point charges are located at the folak,j:(6em: ao;taq dl lowing 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 magnitud;qlat, k a:e:domaj (6e of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a s ooqk(n kbd8j0xuz: 45econd point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of kk8:qx5dozb 4u0n jo(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 yeyj1efy r 8/(vhi7. , pwx7+fzbwx:dnC is at (0, 0). What 7 ,8 yzv:7eyy1pfhw x/ wx( jbe+d.rifis the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = gky3gj1y /pd/-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)gk3 y/p gy/1dj. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral 7 j0fpc(naj( / paxl;q.,fol mtriangle which jxnfl(lm0 (oc /,aj ;pa f.p7qmeasures 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 +4Q, which are separated by 3.0 m. At whatao(+k + f7skdl24hwdh point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero? fk4d++d72w ho( slkah

  A +3.0-C charge is at the ori.zu)e omr*cq,t;hk mup ,+vo+gin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placede m.pcr*,m uozot )vh; q+,+uk so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is wy2aam bm8 6*fplaced at x = 2a. Where can a third positivemwyamfa*28b 6 charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tj.;pg43djexuij 5t )jotal 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 force5od ehpuzzw4xv.h 3k(6gh pgn 47vd/b .u2d4h of gravity by the attraction of a fixed proton some kdgupo u6/d(.nze 4pg34hvxwh7 vd hh52.b z4distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fqst g bn56 fd*w+f+ik(rom a common point by nonconducting threads which are 30 cm long. Both are given identical charges+b*g+fqn6wf ds itk5( , 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 has a charge of +40e yw-koj:qy(mat(gkf 5w ec::9. What is the magnitude of the electric field at a distance of 1.0 m jycow :kma9 :( 5ykf: gq(wt-efrom the nucleus?

  What are the magnitude and directionh -g);gim(eiq of the electric field at a distance of 1.50 m from a;hm(e i-q )ggi 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t0fs0u 0kxq8tf7gk o .:b ktlo.he electric field at the location of the test charg.:kbf7s0qt. 8xf0 kootgu0lk e?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th;+*a31h3 fmigsmjopw75p jfw e electricowmag+17 jm3f5w ;p3i h jf*sp field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ozd3so5qx g e0z :ux+7lf the forxxoq0 :3 d5suze gl7+zce experienced 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 separated9h9vh*jwqm) g by a distance of 4.0 m. What is the electric field at a point midway betqjw)h9m h*v9 gween the two charges?

  A 5.0-mC charge is placed at th.kzs x8rph6csmeu3hv0m f( 62 e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cmh vmr3 0s(8f2mez6ukpxc hs6. mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed / juba bp.. js-,kd5ibieuwd )-5d 5lxat the 0 cm mark of a meter stick and a -4.0 mC charge is placed a- idij.l)sd bu-dekb/5 a5 wj5p .xub,t 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 = 0dr uzg5it w4-yjtgs z *q-)2,sovk9)w.20 m. What is the magnitude of the electric field at*jwtud9i,wz-ggst)s2)ryz 5k vo - 4q the point midway between them?

  Three 3.0 mC charges are at the three corners of a sglet yg351 is-quare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the lgg-1et 5isy3 center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners owy2)9f.,gw, sle pccw f 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).c2y)w9l.pewcs,fgw , 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 5h*o.fch3p o ofbwf(s t )/en+it is placed in a uniform electric field. What is the magnitude of this5spb)h*nf(weohf o/ ot c+f3. electric field?

  A particle with a charge of 4.0 m/ekwuc c24a-+h hzt)fm6w ar 6C 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 plan,)jnw:-tulac q+2f4 1 ewx skjhm v31ced in an electric field of 6000 N/C pointing downwareum,wjafq:nlns +)1w3xtc2k 1j- h 4vd. 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. Ti,.ta:b6u9arj sd,ko he ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electabisau,roj. ,6 kd: 9tric field?

  A metal sphere of radius e6iyq 4ox; 9gz10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphe4qz 6e9x igoy;re's surface?

  A metal sphere of radius 2.0 cm qo(q yo 7bo74rcarries a charge of 3.0 mC. What is the electric field 6.0 cm from the ceo(y7oqo 4 br7qnter of the sphere?