State the law of conservation o: 3xz xoa4ypihef8a/syd12 )k f electric charge.

  Is it possible for two negatclstn uyz4ij9 4 a6)t.d/bs0sive charges to attract each other?

  Is it possible for a positive and a negative cp pnbvqc5 :2 ,jty+3q1jsw jj*harge to attract each other?

  A glass rod is rubbed with +a(0ugphk hg 6a piece of silk. During the process the glass rod acquires a positive charge and tpga g0h+(6 uhkhe silk

  A proton carries a

  The model of the atom shod20 lrwd 3go9)j4otfcqx5j *qws a

  A neutral atom always hd2vqgi)wx(harx5 jku2 p,i; 7as

  An atom has more electrons than proto+itdev; z9ydm z, fi50ns. The atom is

  Materials in which the elect* enlj wjkyj8*c2xm6)rons are bound very tightly to the nuclei are referrec)wj6yx nl*e8jj*2km d to as

  Materials in which the electrons are bound very loosely to the nuclei and can :om 9; :ds0u2 (g 0tiuvs7quv iz+wstumove abouts0qiv7 gos (us + :u:ztmtud;i90 vwu2 freely within the material are referred to as

  A negatively charged r8g52b ;gn c 2lsqna5cqod is brought near one end of an uncharged metal bar. The end of the metal bar farthesta5 28bqccgqs5ln g;2n from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.h3 7v lv+gyjapf(pv0 ug/bh+. They are placed near each other on an insulated table. Sphere B is briefly touched with a w+fhp7pbyga0hu.v 3 v +lj/(vgire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elyk gdq;4ms:-x.l 6iec ectroscope positively?

  An originally neutral electroscope is briefly touched with a positively charf 6bi2th-42d0m p8; rumd abzaged gmu4a602fd bbd-tzr hia m;p28lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively )clju vnudzpw9nw3 9mk :oz.di ,pe)g 3:j;3ncharged glass rod is held near it. After t9jzncwmno :pzu ) 9: envlig kpwd.3u3 );d3,jhe glass rod is removed, the electroscope

  A positive object touche7 tki25k-u uhi qfitfr95et* m5jr -:ks a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it.i2k: 5ihqft5tr it f-5u 9u7-kmerj *k What happens to the leaves?

  A large negatively charged object is placed on +6dx+ bn9ubcran insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along thexbcubdn +96+r 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 Cou4vw ;yyo 6c7 uw:jc4rulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c /slq; ujrpe, vv0:ka:harge is larger in magnitude thavvk0:aprs ,euq:l;j / n the second charge.

  Sphere A carries a net charge9t;li qy3j+yu and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between thti+qy ;3l juy9em?

  Two charged objects attract each other with a ce/ 9 wbwa,zn(7als( hisrtain force. If the charges on both objects are doubled with ww z(/s ha,7a(n9sbli no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive26 n-j96ctyjg bi,elz85sm yt forces of F on eacscnjylm2,ez5ty668g j i- b t9h other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. 3vu o+ 7,dn7fvvrt*nt What happens to the force between them if one chargvt7r+v*odu ,fn3tn7 ve is doubled, the other charge is tripled, and the separation 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. zd - hd 8j*ybds7xbak5(l, fdsfio363 What happens to the magnikd5f3 d-hlj 6a7 df ziossd 3*y(xb,b8tude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are 8bj nnzri r i5yp 6-m,dr9f7g*separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the pb i879 rgprzi6j*rdf, n-y5mn roton?

  An electron and a proton are separated by a distance of 1.0 m. What happensn ri8p /gk8m 67wl3/b+.dd8wvaez pqm to the size of the force on thmld87 peivw6a/ bwqkn/g+ 3 8m.przd8e proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center oiwe :hn 1m3mux; *oxh6f 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;xun16 mh:xo* me3 hiw 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 cenbybx7/j9:11 jvvkg dnemf +38qx *c7wil) lnatroid 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 kefm n n8 b1+7xl/ia yc:3jb 79g1q)dvjxl wv*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 a ve5 qlc0phsm3wv:x d p1 ,*uz0doctor?

  At twice the distance from n+ mn be;708wwzpfp5*yiqw1 ua point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pos;-pgf /nb2dk67n yub8 nb-hb aitive charge along th/f-abhnd nbu 7gy b8pk2;- b6ne line joining the two charges?

  Is it possible to have a u r(sh 2ib8 5bl- u1zyf5cw/bwrq.,rjzero electric field value between two positive charges along the line joining thef.2r w(sr5b18yl i uh-qu5c/, bzjbwr two charges?

  Electric field lines near psitive wv;nol-mf12s/w1ilw point charges

  The electric field shown75hm qpp88zjx 23bj bqqf z/q1

  Can electric field lines intersect in f4ui/cprxn jae2m3 h;4 ree space?

  A solid block of metal in electrostatic equilibrium is p ,mjxgx; 7u 9jd1wj7w ru6fyc)laced in a uniform electric field. Give a sta) dxmr7u;y 6j791fucwj,x jw gtement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamex2i6 dv p:.xeoters are each given the same charge, the electric field (E) midway b2i xoexp.:6d vetween the center and the surface is

  A cubic block of aluminum rests o*oh3:x.cr cdvn a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sur:cco h.*xrvd3 face?

  If a conductor is in elecpv:erfkd 3n ew-s5pju)-8m s0trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphwd+(d e mcgnv6hl+k 198a 3cfhere that is grounded. As9+6g81 vmncl (kwchd+ eh 3adf compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilic,gu kb-xi4m.kt -u,d brium.

State Gauss's law.

  The charge carried by m22prc-nu6 51efimnsone 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 than ey,d p)xdcr2t vm6 1wm +bg.-tmlectrons does rmtc.xg2 1 d-y)md,m6+wpv btthis piece of plastic have?

  What is the charge on 1 kg of prota.98. 8kpqysi ,wpm vzons?

  An atomic nucleus ha88 jjj/p+pyo(m ehar5s a charge 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 values of qy:cjguzf zp.) 4 z3r.2.0 and -4.0 mC, respectizy3)u.zrj: czp .g4f qvely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secondxybyb8 qmg guj;*;*; :o bo28oqiir)m charge, and the force between them is 1.0 N. What is the magnitude of the; 2yj:rmq*b; ogyqo8bu;x)b*8igiom second charge?

  Two 1.0-C charges have a force between them of 1. fm 87btgf08xy0 N. How far apart are they?

  The force between a b,m.+xk sf,sajgq ou*d 1:.bo $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. I8oq8q3y*fi o1ezje -u f they are moved to a new separation of 8.0 cm, what is the electric force between themo*q1ee8zoq-y8 j ui3f?

  Three identical point charges of 2.0 mC are placed on--jn n aus9e5i 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 n je n-5-i9uasmark. 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)v8)zh)y lfpx of +2.0 mC is placed at the origin, -2.0 m C to the right at x = zy hv))8fxpl)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 follols .3 zfai(*lnj*bcs )wing 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 on)3sfzc*a*sj ( bi.l lf the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center o9*kc/ghz rt.n f a square, and a second point cha khtn z.*r/g9crge 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 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 h 9mxj6 cwoli6be1(+dat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whahd1x9 66+(lmc owbji et is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2*k8gr 8tpbuken7o,wu9t n: ds/ p.pz* = -1.0 nC is at (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 chtn8kp79pspu8rd:z* kotgu* ,b .ew /narge?

  Three identical charges of 3.0 mC are placed at the vertice 1nn5w;, atf4zo mf itoxti: .9rn3b0rs 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 cbzo9omf:nrita,4fi 3t n nw 0x;5.t1r harges?

  Consider point charges of +Q and +4Q, whico9/gbp cb9ob1h 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 the electrostatic force actingpbcbg 9/b9o1 o 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 m. Where ono-: 9y g/hwoodwv g)ux.9 duwwl va )k05p,x*o the x-axis can a third charge be placed so the net force on it is 5dg9xuvvwo-lykpo*o h:.0awwg,/w )ud )x o9 zero?

  Charge +2q is placed at the origin and charge -q ifkqsi88, 2dhmdpwjjloa5 e6skd8 8/ ;s placed at x = 2a. Where can2 l/sis8d885d86jjqah,w km;pe ok df a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 .j7dk, (i q5jedck j :e5;hzjpg. 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 gravity by the attraction of :4z bwsjbfp9+ fwr*v*a fixed proton some distance above it. How far above thp:bjvw+s*z wf 9f*br4 e electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductl t (ck 0h+ybsd;g(zf8ing threads which are 30 cm long. Both are given identical charges, agc(d +8( lytsf0kbzh ;nd 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 twseu lq 4-q (9;*cultshe magnitude of the electric field at a distance of 1.0 m from the nucleuss*u4 9ql;- tqcwuels (?

  What are the magnitude and direction of the electric field at a di8 7qb9p0 oyonw0 fzw4jstance of 1.507 yonopj8wwqf49 bz00 m from a 50.0-nC charge?

  A 5.0-C charge is 10 m fro hyl:rc8p (al7m a small test charge. What is the magnitude of the electric field at the location ohrl(8l 7y a:cpf the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directx nkp 8 lwz x43g8w7x+b2g:phcion of the electric pzxb 8g3lww7+h xc8 :nk2xg 4pfield?

  A 5.0-C charge is 10 m from a small test charge. What is the magn5j//r8ww3yt jak-hg hxub /f*itude of the force experienced by a 1.0 nC charge placed at the location3wg-* fr/j htjwb5y/k ah/x u8 of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a d9u.gcje j sp 1prp*(1vobl:*uistance of 4.0 m. What is the electric field at a point midway p 1rvg jp*j .e9(b:colupu1s*between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark qix ps68o5 /d)kz oymqf.k *j2dyw91w of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What isp5)q9s681ky of 2mq. zxd iokw yd*j/w the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick azmzg4 1,;hcmra;z n 05gg oz/cnd a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the 4mmzcz;gga zo gnr/,5zc 1 h;0electric field zero?

  Two point charges of +3.0 mC andcxs// wi ibqe:ov8h./ -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the/e:/o.x/ q8isi whbcv electric field at the point midway between them?

  Three 3.0 mC charges are at the tryx(bgjg2ud8owp3 67hree corners of a square of side 0.50 m. The last corner is oud7gw(8bxr 32 y 6ogpjccupied 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 th uy 7)pw,v2 lyr18kwcbe corners of the square as follows: +4.0 mC at (08yucv1yl2) p 7b,w rkw, 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 plactg *2;m+pge6 m(mai sred in a uniform electric field. What is the magnitude of thisp+ isam2 (r ;em6t*ggm electric field?

  A particle with a charge of 4.0 w,.rex ;whcxjl l/ ph15+iku( 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 electri toxk :5g)kg2ic field of 6000 N/C poin:tg25 k)ioxkgting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chbi+y *m:wh f0barge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force wibmbh : f*+0yof 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 isg 3rp32jd5 ( sverh(izzhw ,v, the magnitude of the electr,,hv jg3 wpevdhzsz(5r3i2(ric field 5.0 cm from the sphere's surface?

  A metal sphere of raseaeo4a /uec )0w6lf- +hzh3g dius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm fr 6o/ z+eh3f4wughal seac)0 e-om the center of the sphere?