State the law of consd3 f8w+h-48v hbevlr 4rq gm+iervation of electric charge.

  Is it possible for two negative charges to attract each(-vqnamrbd8y * i96y 0cfhny; other?

  Is it possible for a positive and a negative charge to attract each o0p ;- iaidbd.ather?

  A glass rod is rubbed with a piece of silk. During the proces1peg q y7thx,q9t69ozi xg9i4s the glass rod acquires a posy79hgx9ix4 1 t 69gzq oteq,piitive charge and the silk

  A proton carries a

  The model of the atom showse ;1r.c hwjgpip-ip:mi+o .g4q+j qs1 a

  A neutral atom always dmv u9;bc t+;bhas

  An atom has more electrons th2y .orno as7mhg oxn qy:3r884s 0.s1jol vhx0an protons. The atom is

  Materials in which the electrons ar d kmt)4thtkde0y,b+)e bound very tightly to the nuclei are referred to 0metb4t,k)y )+dt dk has

  Materials in which the electrons are b9 t6q1o wk 1 syd6j5, m2xjtbbuvc3c4uound very loosely to the nuclei and can move about freely within the material are referred to asc2y wxb41jk 6 vs96oucu3t1q,5m bjdt

  A negatively charged rod is brought g)nk1e+ wije+near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod egw)j+e1i k +nwill be charged

  Sphere A carries a net positive charbq0yk-5q y akr)i 3uq;ge, 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 statement is0aqqy-byi k;q ru3 5k) correct?

  How can a negatively charged rod charsnf q4p)(2ekw;v1fw( z z d8sl qm)c;xge an electroscope positively?

  An originally neutral 6t07kil 6nztrelectroscope is briefly touched with a positively charged glass rod. The electroscopr it6n6zt 7lk0e

  An originally neutral electroscope is grounded briefly while axw,b-js(mk eu9-wol)a-e y9e positively charged glass rod is held near it. After the glass rod is remov-a ylo x(ks)-bje9ew m,e9wu -ed, the electroscope

  A positive object touches a neutral electroscope, and tcrki93qs. b3g he leaves separate. Then r bq3scig3k. 9a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object itf8ld.w wlx x0v1 p.e-s 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 negative object. At no time does either ball touch the negative object. What is the final charge on each ballx -1 lwt.0f dxpvw8el.?

  Charge is

  What are the units of thewv3yi hlxkmrm7 1hij9u:5 n;( Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The o8 -r1ku7;yb;+ jxz;x q f6 )qjvixl auz+hh6pfirst charge is larger ina 7+zx);ku8y h olqji+j6z br 1uxf6qx; ;p-hv magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral ivoycblhepr987yoy; a / f:/-. They are placed near each other on an insulated table.-8phy crly 97/:e vyo/fabo ;i Which statement best describes the electrostatic force between them?

  Two charged objects attj /qbr2kl zu(3bii*5mract each other with a certain force. If the charges on both objects are doubled with no change in separatio (2b*q 5iiuj3l mkzbr/n, the force between them

  Two charges are separatv;g/ bsj cs)0oed by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual force;jvog )b c/s0ss?

  Two charged objects attract each other with a force F. What -;tgn ujv g: 1yd;xpf.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 is now equal to1pg: ;;tyd-.fgn vjux

  An electron and a pryy*vwvs3l(1bswj99 v7sr(7fwe x+g roton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electv wfgwsrj 73( sv1b99yw+(sev y*lxr7ron?

  An electron and a proton are separated by a distance of 1.0 m. What happenag -xwvs6viy w12 sd)/h5xr1 ns to the magnitude of the forc2dgx axwv1wr-vh/51ssi6n )ye on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distuu y/w jx.3pl(ance 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 .u(uxwy plj/3the proton?

  A point charge of +Q is placed a sq7--fhh.ubj g8 ns(st 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,ssb(g h -nus.hf8j q-7 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 centroid mtw3/;hs g3gwvbq: h+:t)8wl jlze 5 hof 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 gm+3/hthetz5v; 3 j l:)8qsh: wwgwb lacts 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 e7+e s1 dm9)tx txbtd;not a vector?

  At twice the distance from a point charge, the strengt5g qfd d:8l, x+ctd s(b3ha6j.wb1rgbh of the electric field

  Is it possible to have a zero electric fhv*lfr17nqfvduz v0ee,lz 2b2:t u) 7ield value between a negative and positive c7uft felv0:2h* )rzn2uqvl1 ,de7zbvharge along the line joining the two charges?

  Is it possible to have a zero electric field)w kjfa v8 +;ifv x,d0r,b8amj value between two positive charges along the line joining the two char8 +wif ,; rmjkvd08fbva,)axjges?

  Electric field lines near psitive poidpro:9y3cs f1nt charges

  The electric field shuvmecz l nccm tc)-25v /18bc.own

  Can electric field lines intersect in free space0e+adt,9a4sivb qu 5 n?

  A solid block of metal in electrostatic equilibrium is placed in a7y9(jz ci k apk03z-oy uniform electric field. Give a statement concerning the electric field in the block'sjizy0o7k-pzay k 3c9 ( interior.

  If a solid metal sphere and a hollow metal sphere ysno g 139v0v*8us6b5sckovp of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfac yvv9 g8o p51 ckbn3so*6suv0se is

  A cubic block of aluminum rests on a w *rwj u hlzf-m;/(idx8ooden table in a region where a uniform electric field is directed straight upward. What can be said concerning thex-z hd l8/( ;miujf*rw charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an n/xu24 k4 +(ooo )e.gwzpiplrelectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is g/nlihr1 ,*c 8dtz qv6drounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sp hnq8 c*lr/dz1v6,dithere has

State three properties of conductors in sta5/ 2,.qcuueknctk7ub ::1 d mmtg*hbn tic equilibrium.

State Gauss's law.

  The charge carried by on 6 b-dnpns6 ql;6 des v0isy(a4gp8z5ce 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 +2.00a*cx63rcf(o o mC. How many more protons than electronso*6(o cr fax3c does this piece of plastic have?

  What is the charge on 1 kg f:ge b/7cxby;i9)jx 4 j8 pffnof protons?

  An atomic nucleus has a charg3axt) c /fth3g f0gs5jh ef6.de 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 2.0 and -4.0 mC,0m:.kpjq/ 8 xabyf;ew respectivelejmx.fay8:q w ;kb/0py. 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 1fp1 k k5 n7).gr4lswar.0 N. What is the magnis74k1)5gk rp w .aflnrtude of the second charge?

  Two 1.0-C charges have a force between them of 1.0o w nsmy68u1-i N. How far apart are they?

  The force between a m-ehjoed1 kgb79g /)qhkvqk+, 3g(jw5px lv5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apams (3e(,7a vrj6u 7 jtgpt-ula0n7lxzrt, experience a 1.0-N force. If they are moved to a new separation of 8.0 z0j,p jxmttaera3 l7 7ng6u 7((lvsu- cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axw p6uk3- y92a7e zpmazis. The first charge is at the origin, theawyu6p -2 37a zkmp9ez 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 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 0dt(+z+c ooin at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm markooztic0( +n +d. 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.wek,(bs x0.9ihkn0kv 00 mC at x = 1.00 m; Q2 = 3.00 mC ahs.b 9n kxvk,k0e(0w it x = 0; Q3 = -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 plac e7hji 1pq6xn e*3ci5s*pi)oged at the center of a square, and a second point charge e*pj5 ixni6i17g pqehcs* 3)oof -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 at (0, 0.10 m); Q3 = 5g)bxukyq8/+ 3uq s l4oj7ecc5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 q3cgyk 7lcu/o) 5u48x+jbeqsnC charge?

  Q1 = 6.0 nC is at (0.30 a;k38bwe62k sb/ebnu1c c(os m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is3ks /w2neoe ;c 8bb(6sc1kaub the direction of the net force on the 5.0 nC charge?

  Three identical charn ia oi 9jk9ft9nren k,1qx+pwz4*k, 7ges of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side.tkrfii7 *,9z,qeo nn+1 4kanx9 9w jkp What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Qy1d oekuhqdjl+//b e+-8a8 hij. is(e, which are separated by 3.0 m. At what point, on a line between the two charges, wouldq8 b/- heaui8+ sjho/je .(1+yldke id it be possible to place a charge 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 gq i. ho,+b,(drv3j qo= 4.0 m. Where on the x-axis can a third charge be placed so the.rg,h vqo(oq ij3+bd , net force on it is zero?

  Charge +2q is placed at the origin v/8yv4 gb:rj m.ks)jee f31aj and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero?ry1e4v vs)e g.fmj bjj/k38: a

  A copper penny has a mass w-qm /n.v l44 icb4x;rcm3htqof 3.0 g. 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 tho i08roqkheu:6 17uex-kse/h e force of gravity by the attraction of a fixed proton some distance above it. How q-xi16:keu roh o/ek8su70eh far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a )eds9zd be dkq*),2xscommon 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 threads i de*s2sd9 )),exzkq bds $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is thfmi+wa(r 6w8u e magnitude of the electric field at amwuif(wr 6+8a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field a)u-u uyoxw 42kt a distance of 1.50 m from a 50.0-nC charg 4u2uo )kyxu-we?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituded 4 s4bwdbx(c1 of the electric field at the location of the test chadw(4bdb4 c1x srge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e 5ff vu y8t5eoz-bh:,eluve thz o: ,yfe8-55fbectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the mag fk-agnzj jo 7)n(cc;-nitude of the force experienced by a 1.0 nC chargg7( o fc-j-jcnk;a z)ne placed at the location of the test charge?

  Two point charges each haveoyzrq+ d11m-.+)knr0e zsqen a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betk.o)r e+qy men-r +nz01qd1szween the two charges?

  A 5.0-mC charge is placed ato/taj73zqb w+ the 0 cm mark of a meter stick and a -4.0 mC charge z + twq/a7bo3jis placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chanf.9 ricc1 a+s+t(okm :rx) uarge is placed at the 50 cm mark. At what point on a line joining :9 i)+umf.(roxr sn1accka+ tthe 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)6v tplw(os,d = 0.20 m. What is the magnitude of the electricd 6o,l(tvwsp) field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of s7s3/ td19pchy r5g beside 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at 7y/h1ebrt5ssdp g39c the center of the square.

  Consider a square which is 1.1cdijqw:g ik;u)z+n dk h p*z 53g:*ir0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC a*)p; h+gir k :cizd njwd*3ikz:1u5gqt (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 hm+3ql:kwq( tit is placed in a uniform electric:+hqm 3t( qlkw field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of e.0us+(yshv;w5 ymg h $5.0 \times 10^{-3} \; kg$. 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 electric field of 6000 *:dgigr6c txv k :9m7m d a//jfu7o6jdN/C pointing downward. What charge must be placed on the ball fo67 goavd dxg6 c79ijrmdt:k/:/ujf*m r it to be suspended?

  A foam ball of mass 0.150 g carries a chargemf3vgzgk 93m) *iv3 vp, ydjyoxr(4/h of -2.00 nC. The ball is placed inside a uniform electric field, and is suspeno4py x3vv3izhfk,y )gm9 /rjvd 3 mg(*ded against 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. qijb t+r; 3r3x2hoxmye2 5hw8;quvce)r gx(- What is the magnitude of the electrh;+ er (bgeow3muqt;xjrq y-32ixh2cvr) x58 ic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha;i pani hp--g4t is the electric field 6.0 cm from the ceg4i-i;n hp-pa nter of the sphere?