State the law of conservatioruk4l/djrhk o;5 -e+ zn of electric charge.

  Is it possible for two 6oh+ ct 5wnxnl4eucdo95 k9s(vu8mj ,negative charges to attract each other?

  Is it possible for a positive and a negative charge to attra/z;m4fk 0fu v nj93u flb iji5,(a:cnact each other?

  A glass rod is rubbed with a piece of silk. During the process the glass gd ,e+gumop4 m3 u,)klrod acluk4o +3,mem,gg)ud pquires a positive charge and the silk

  A proton carries a

  The model of the atom shjjz;)qi*nva4 elt+ 2kows a

  A neutral atom always tcvl-d44lb7veub0 : e has

  An atom has more electrons than protons. The atocr:vd:;:vvdtv/yi nc 3m;* kjk2.q egm is

  Materials in which the electrons are bo1n0;jz cqo- 8ne/ ernsund very tightly to the nuclei are referred to e0 81oq-en/njr;zscn as

  Materials in which the electrons are ltn,1) 45qsbfe3fruqbound very loosely to the nuclei and can move about freely wit5,3qe)1qff b 4 tnulrshin the material are referred to as

  A negatively charged rod is brought near one end of an uncharg/5j 36l/ jbt b q58weqr9inushed metal bar. The end of the metal bar farthest from the charged r59 ltjswqu538/6 bbeij/ hqrnod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They )fio-sfm+uh tgesslfx4tl -p 4+-5d - are placed-sp-fo45 +seh-) u l +fg ximttdsl4f- near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargeyyqqr9mkk ;01d rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posi2y 51+rtnr liutively charged glau+ t1i rrl52ynss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a po)/dw 2wc dj.)ayqm/e asitively charged glass rod is held near it. After the glass romey/dqcaw/ j)da)w 2 .d is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves se9hs/weg9w)d h(ab1 kuparate. Then a negative object is brought near the electroscope, but does not touc/aeguw hh(w)ks 19 9bdh it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neut e /2ciauee540*7mc vvvnj d4yral metallic ball rolls straight toward the object, but stops before iv24 dn 5 vi0yjec74a* mvue/ect 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 g3kxmhn(8j2e1w(h9thrv o + h the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger i9(unhy:ny:9qgsx4f y n magnitude than the second cha::n qgxu (9yys hy4n9frge.

  Sphere A carries a net charge and sphere B is neut8: ru 9bkipfix0ja+:k ral. They are placed near each other on an insulated table. Which statement bes+:xb iirp 9:fukakj0 8t describes the electrostatic force between them?

  Two charged objects attract each other with a certain formt/1rg*z an2zce. If the charges on both objects are doubled with no change in separat*zza m/r21t ngion, the force between them

  Two charges are separated by a distance d and e;6mcyo )h wxx9xert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, whxc9hwyo x)m6; at are the new mutual forces?

  Two charged objects attract each other with a b;pf7,u :h)x81 *wsrg rot(j+uh jkp0(ppyxy force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force *rx ,yx uu1wo+h psp:7p(jp0 8gk;fbhtj y()ris now equal to

  An electron and a proton are separated ; z-jt gw)fyclj53iz. by a distance of 1.0 m. What happens to the magnitude of the force on the protoz c-j)i .lty5;wfjzg3n if a second electron is placed next to the first electron?

  An electron and a proton are separae2 pip zaq7s90ted by a distance of 1.0 m. What happens to theip79p2 eq0sza magnitude 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 distance of 1.0 m. gy /onuwcww2t4,+kp* What happens to the size of the force on the proton if the electron is moved 0.50 m closer to th/+*c 2p,wynowguw4k t e proton?

  A point charge of +Q is placed at the center of a square. Whyl6fpfj:( m:*/7n ht)ja agf-otufo( en 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 is7(fpt)-ftm :6auj lo(ao n*f /h: jgfy 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 aa3x am vw8 c.i3;*evv51 x6ufc xyof7the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.3ia u56v cw .3 eao8yxvx1a*7m fv;cxf0 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 ailk)y) ir8ate qk/ (-t vector?

  At twice the distance from a point charge, dp9 jtk g;dxeu*6+-*kofm1l cthe strength of the electric field

  Is it possible to have a zero electric f;ubf c 0* -le c ,cu7kbai 3ht.i)pdv;w:/zesbield value between a negative and positive charge along the line joivu;e b/bf*ped 0u-l ,; :b)iz tks7wcch .aic3ning the two charges?

  Is it possible to have a zero electric field value between two positive chargest *x;aw4y ywo9 alo*xt4 w;yowa 9yng the line joining the two charges?

  Electric field lines ne+jn ba u3cg z*r:;rdx0ar psitive point charges

  The electric field show 3x myvi.ffyo:tz7 5-(jraremt4ti; )cek e*-n

  Can electric field lines intersect in free shw4p9 y 99e*yfou b;wmog22qcpace?

  A solid block of metal in electrostat9gjc wqo4 9c)oic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block'o4w9oc 9jc )gqs interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are g+u4)0yz*y me a0u8x0mehdmq each given the same0dz eyqmumuh)*ax0e gy+8m0 4 charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tc;lf 9:hma s.dj1m y/uable in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top syhjac l fum9 ds1:/;m.urface?

  If a conductor is in electrostatic equilibrium near an fneuz2) . gt./-oxo dwelectric charge

  A positive point charge is enclosed in a hollow metallicjb uxal*ob:,2liz q+ 5 sphere that is grounded. As compared to the case without the hollow sphere, the electric +j ibz: qo 5b2luxal*,field at a point directly above the hollow sphere has

State three properties of coq:q8ja1 bmx;s7kl 5bynductors in static equilibrium.

State Gauss's law.

  The charge carried by oner-g8txt +h *, i;nkw6davnp c7 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 mhh/ls wyr4s ;kj35nn 3C. How many more protons than electrons does this piece o3lk/hw3nyr; 45sh nsjf plastic have?

  What is the charge on 1 kg ofmwn yc9(ff(k 0 protons?

  An atomic nucleus has a aennu j/4//xn 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 va7xdjsi)/h 9j nlues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric fo)nx9hsi7 djj/rce between them?

  A 1.0-C charge is 15 m frozyq:yb5 /zb h2+cdpmuv v* 7w9m a second charge, and the force between them is 1.0 N. What is the magnibdwy/+ m c2vq*:yuz5 9p vzh7btude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theydxeo4*v +f+wj8vk dww s7 :gv7?

  The force between a gk;-gwdufy99 lwu 5q *$30 \; mC$ 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. If tu qcmf1g/ccx*b 6z/4qhey are moved to a new separation of 8.0 cm, whac/fqqc/ uz6xm1b*4 gct is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cz ;o k2a8bmt6r7kks v3harge 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 of the electrostatic sv 38k67zktkr2o;ba mforce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC ip5wuy1fwb10q bem, y/s 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 e 1, mf1/pwbbqu5yyw0 and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.084 jw ,-;j1jxb+zyew pjp0mo v0 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 8p+j 4yjb0m1j-z,v pwj; xowe = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, anbsgm,sn7pag(e8/ 6r ad 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 egs am6(g7,rabp8n/ spositive 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 (0.3/i5. uk4ewos r0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudei4kew r/os5.u of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 9 a6dy r3t 65;1zyhutiujcbs7 m); Q3 = 5.0 nC is at (0, 0). What is c6z j16uyuts5d7 ;a 9itbhyr3the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at tht27 nf;i ob/+ (-vdkxlbp9icye vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of tx b dv okb9ytclin/i;(7+ pf-2he electrostatic force which acts on any one of the charges?

  Consider point charges of +Qwabt4w91w ul*3l wd 4k and +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 chl41w*lwk9aw4 td wb3 uarge of -Q such that the electrostatic force acting 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 on)jc2+ al ,jot 6ewzg(q the x-axis can a third charge be placed azg+6,2jeljqotw) c(so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placm9mbm+v-cvhy d2+p 0ied at x = 2a. Where can a third positive charge +q be placed so that the force 9dhpb+ m2+-mc myvvi0 on it is zero?

  A copper penny has a mass of 3.0 g. A t-u*np-0md yaoj,g c hkq 8hv7gu7qv00 otal 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 gravityvi-smr/a j(;e by the attraction of a fixed proton some disja m/ ev;r(i-stance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducieqo0w 2mc;4)bjc x7cting threads which are 30 cm li)q4x m2w7 bcjceoc;0 ong. Both are given identical charges, 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. Whoifx9 o 4gt9 (ij*ogx3iat1i7at is the magnitude of the electric field at a distance of 1i txo 99(i1i4o 3gj7x*ta iofg.0 m from the nucleus?

  What are the magnitude and direction of the elect v(59c(ygom*f zhvx9rydu )y5ric field at a distance of 1.50 m from a 50.y vrxvg 9y9fz5) ((u5c*h domy0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude maqy, +:-y xreof the electric field at the loq yy, rex-:a+mcation of the test charge?

  A 5.0-C charge is 10 m from a small test charg /vj,-dqox u+zf.vz *de. What is the direction of the electricjzd+z x*.v,fud vq-/ o field?

  A 5.0-C charge is 10 m from a small test charg7e c **4ztj* jk0pksj6fiw5sugtc5 1le. What is the magnitude of the force experienced bk5zl5wj* 0j7etcfg6* k4si s*u1pt j cy 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 -cl nnmau0z03dkhx *1xqix( co. 86xpwwiq. 5distance of 4.0 m. What is the electric field at a point midway between txw8z.3wk x imcc5- x(.ai0n p0onx*h 16duqqlhe two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stp+k)el 7azno 8ick and a -4.0 mC charge is placed at the 50 cm mark. What isa e)8npzk7l+o the electric field at the 30 cm mark?

  A 5.0-mC charge is pla*6 47hm;qq,qah sdh2 hh9kleqced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pointqaqq24 *,m;h qs7h9 h6lhedkh 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 = 0.20 m.ji n/lp 056q )-lhflrj What is the magnitude of the electric field at the point midway bip qrl5lf0-6 h/ )njjletween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.6vnrh 9. )w:/tldik z1yc u.ko50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field a.1nhzkdi9c)owvku :6 lt.y/ rt the center of the square.

  Consider a square which is 1.0 m oxrgnnan qa3x:; hm* w; ,mu0w+n 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); ru0 xax +nh3mg ,;w*m;:wnnqa -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 pb+hevku(xl r2q6+llzc 8-f1 jpf.jg (laced in a uniform electric field. What is the magnitude of this electric fiel h+18fbx-6jrje. 2+qgzllkp f(uvcl(d?

  A particle with a charge of 4.0 mC has a mass v8)1-p ma :s(gkiyvpkof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.1be1o5 groq 7*e20 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for 7 eoe15goqrb* it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plac cm 3a57e wtpxg5xsd1,ed inside a uniform electric field, and is suspended against the fta1c53mxs5g7 dw px,e orce 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. Whato;87 axolfqh ; is the magnitude of the electric field 5.0 cm from the sph 8h;a;xfloo7q ere's surface?

  A metal sphere of radius 2.0 cm carries a charge of (egmmoqg m9 ce2r4v+03.0 mC. What is the electricvrge 94 mgqoe0(m2+cm field 6.0 cm from the center of the sphere?