State the law of conservation of elecv54xbd5b3a tt f .n/+kr:2uomjqc.trtric charge.

  Is it possible for two negatioisb jch 8-d(,ve charges to attract each other?

  Is it possible for a positive and a evom mge/,:9b negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duaqy-+nul78h8zg j oe;fq z:j9ring the process the glass rod acquires a positive cnf79+o: ;qjz yz-8uhagqe l8jharge and the silk

  A proton carries a

  The model of the atom shows 24 ewv:j;hinkz 8/cw vgn8va7 a

  A neutral atom always har2r. ; dcj4cbkmyp46 g6qqo/zs

  An atom has more electrons thmk 9q0/z 6*5uswoepfb an protons. The atom is

  Materials in which the electropi.)w3a iz /xjns are bound very tightly to the nuclei are referredipaj.i)xz /3 w to as

  Materials in which the electrons are bound very loosely to the nuclei and kcm7c v xc7;iuhs,.- yewkk9(can move about freely within the7(h ie,k-9 kwmcxsk;c u.y7 vc material are referred to as

  A negatively charged rod is brought near one end of an uncharged c5en krpxu(5hqe/s1w aa lj60-2,e f vmetal bar. The end of the metal bar farthest from theh, sncre ka/0fwpxv2(-aeu j 5l156 qe charged rod will be charged

  Sphere A carries a net positea7a p,j3 (ndqive charge, and sphere B is neutral. They are placed near each othjap( ,de3a7nqer on 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 electroscope pyqh/w-p+3y levbt 5d/ositively?

  An originally neutral electroscope is briefly toubmhcn6 dr+i47 )8pm chched with a positively charged glass rod. The elec7)b6d +nm ihcmphc 4r8troscope

  An originally neutral electroscope is grounded briefly w5 ,yln/ te*gahhile a positively charged glass rod is held near it. After the glah*,t ny5l/geass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.9+ 1fok;c gqlk1xw7yui6o ce; Then a negative object is brought near the electroscope, but does not ;ky6l9io 1qfg; owec+7kxcu1touch it. What happens to the leaves?

  A large negatively charged object is placed on an iezh ytqulx:y76371 akx 1d*cqnsulated 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 touhq y3qya xku 7 t1*xecz76ld:1ch 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 Co+fhf0pxw; sq eg /.f65pge34nm6nab hulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dist0sx*jw hwd zz8)s-lg2ance d. The first charge is larger in magnitude than the second z l)j2-w zw hg8xss*d0charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ea bbyj cw:4s8d9ch other on an insulac:9bb swd4y8j ted table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other s d9jw3-vl+f pwith a certain force. If the charges on both objects are doubled with no change in s jv9fw+3 -pdlseparation, the force between them

  Two charges are separated by a distance d 5-,som*-8 z c/vrh uu4,uaez u(fqaznand exert mutual attractive forces of F on each other. If v ,r-hsu*zac/ e4(numzq8uu z5,-foa the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wit(:rc khg;-+ r.;frkf0-di gjmryc n d 9oww;(ch a force F. What happens to the force between them if one charge is doubled, the othekrrj ;wd.ic-kc0(n;o r;f-9gw(h y mc drf+g:r 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 se 0nwu 5ih:e5wg hm:p)iparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is 5h:w)miwu :nhp ge5 0iplaced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 mw2vz,tf be0 k8. What happens to the magnitude of the force on the first electron if a secondf,t8 vz ekbw02 electron is placed next to the proton?

  An electron and a proton are separated by a distance of ;ca2-wp 7nczzxtf(:u,6pmqt p3an 6v1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m tp a 73u(6qnzv6 z2:pmcta-c xfn,;p wcloser to the proton?

  A point charge of +Q is placed at the center of a squawj wyyn.w uau;50 +o+dre. 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 t+duw;jyu 0w ynaw+.o5he 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 r;plq.46x d+8*hn kyxa jevl0 is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of t y 0xhl 6.aj pn8x*v+;lr4keqdhe force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followingygc5h uu8 p7,gbygw 8: is not a vector?

  At twice the distance from a point charge, tnm.c2s)2n, cn abbx 1 ,ff(nilhe strength of the electric field

  Is it possible to have a zero electric f3czmz2)perss4 1qj8e/:qdo p ield value between a negative and positive charge along the line joining the two charges?2q peq84)/ zj3r: so smp1ezdc

  Is it possible to have a zec/zmxcmg 2xo5tkzn+t)l7n78 ro electric field value between two positive charges along the +8mz 5/gxxc27mkttn conl7z) line joining the two charges?

  Electric field lines near psitii -b nbwll(b23ve point charges

  The electric field svcxq8e * c2tb pk)m4dm/ 97voahown

  Can electric field lines in2n9ft4 zp qo1+5cjeh2wl o)zztersect in free space?

  A solid block of metal in electrostatic equilibrium is gvix-9fi6c8 a(j;g7n piy em ,yekt69placed in a uniform electric field.j98mxk9(iy pgi7cgv ,-nfee t6ai6;y Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ak3b dov nad8u.1) -6clqdld* jre each given the same charge, the electric field (E) midway between the center and the surface -*bdo3qv6ldu8n1 )adljdck . is

  A cubic block of aluminum rests on a wooden table in ) qtr 52 3ieaxrqxk(s/a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sq(5rer2i3x xt )ka s/qurface?

  If a conductor is in electrostatic equilibrium near an elea :ts)tp0r+)*qtzum(/on0wlh /v zh mctric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundeq+d .upwsv,u8ud4c8 k d. As compared to the cawuk8,v + scddqp 84u.use without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static n2jq ,x-7k1 rjj gf0smequilibrium.

State Gauss's law.

  The charge carried by one elw;o(txtm;3 w aectron 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 protons7*yde mpn nvqx +*g79c05phks than electrons dog5yh9k 7vqpx*m sndp 0nc+e *7es this piece of plastic have?

  What is the charge on 1 kg of protons?z8+kmk1d+ w id

  An atomic nucleus has z*im2/l, mvq,; zvcj qa charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatelyh:n1.xszw e-5 z5bzd by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electriy1.x zz5n b-hzs 5e:wlc force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 Nnj 83 )-typsoa. What ty poa)3n-js8is the magnitude of the second charge?

  Two 1.0-C charges have a force bwpi*i:9d9vtqw (c1i jetween them of 1.0 N. How far apart are they?

  The force between a xn 1*u vgir)ofnul/vkd :+;n 1$30 \; mC$ 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 t/-dei ez4od - 9dzvam6hey are moved to a new separation of 8.0 cm, what is the elec-ozz d9diea-e/mdv64 tric force between them?

  Three identical point charges of 2.0 pwu - g/ii5:5 es bovgh+j8b,pmC are placed on the x-axis. The first cha-siieo, ppb/vwbgh:8 5 g j+5urge 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 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 place4; nh); e)yyv8dyh+lh6rzdq ed 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 of the electrostatic force which acts on the charge at the orqd8nrvz+h)y hd l4y;6eh)y;e igin?

  Three point charges are located at the following positions f- l2lgxcor23: 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 magnicxl -of223lgr tude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and gj(z+brrz yw hp4(g51a 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 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 corn4whyz5 zj (pr+gg1( rber?

  Q1 = 6.0 nC is at (0.30 m, 0a/xhh :-za -p((abovvuju(h 9); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is tha 9xazv/p aoujb(-(huh-v:h( e magnitude 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 mb8(.4(lmy flakyu 8ypaj rb3(); Q3 = 5.0 nC is at (0, 0). What is the direction of 3am (bbr(jyf y .ya84k(u pl8lthe net force on the 5.0 nC charge?

  Three identical charges of 354kjd dq6tej:.0 mC are placed at the vertices of an equilateral tr:tqj d6d4k j5eiangle which measures 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, whid;o6b:jy,w ynjf xf+l -n-3o sch 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 acting on it would be z:fn;6nl+ bxwdso ,jf-3yj- oyero?

  A +3.0-C charge is at the 4/kv o.4dp )fe4xvfvqorigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be 4x.fvv4qpe)dv/o f4k placed so the net force on it is zero?

  Charge +2q is placed at the origi 7.a5dg: auxa0c.fxobr s.kk1 n and charge -q is placed at x = 2a. Where can a t.u.dgk5r0x 7:aoca fsk.xa 1 bhird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3 2x5th yit80dc.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 agains/,jwnqg 6b7fwna4 3hwt the force of gravity by the attraction of a fixed protongna4h/,76 w3 wwnqb jf some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung frvbo:k:93g, oglnuv: g om a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostagkun:3:v:obg,9 o vgltic 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 +.13ynpz /j)2dwts u jwtj7c *i40e. What is the magnitude of the electric field.231yt/uwd zsn)c*j tjw 7ipj at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric f: )1tf mrxvuc4ield at a distance of 1.50 m from a) 4xct:fu m1rv 50.0-nC charge?

  A 5.0-C charge is 10 m from a small te2x(t:lg8s fuz g4p1:db1txizst charge. What is the magnitude of the electric field at the location of the test chari bl 1z4xudgg(xttzf s8 1::2pge?

  A 5.0-C charge is 10w fxs9 b.ml*8k m from a small test charge. What is the direction of the electric field.fblw k9x*sm8 ?

  A 5.0-C charge is 10 m from a small test charge. What ir+e f2o4ng (pqs the magnitude of the force experienced by a 1.0 nC charge placed at the locatio (e24q opn+rgfn of the test charge?

  Two point charges each have a value of 3.0 C and arej iw7p.8y5 b wlig7 df-wx/xn8 separated by a distance of 4.0 m. What is the electric field at a point mdi -xy5/ j8 7 w7f.nxpwb8wiglidway between the two charges?

  A 5.0-mC charge is placa-ucc g)klzq5h wb, 9*ed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is t5*achu lw,z k-9 g)qbche electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and acs; qdy9 i:4rw -4.0 mC charge is placed at the 50 cm mark. At what 9wys; r4qi dc: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 = 0.20 m. o6r yf9 /;osolWhat is the magnitude of the electric field at the pointy;o6fl9r soo/ midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T5+eh3dkl p*hb n4fl /jhe last corner is occupied by a 4lb *+lnjkf/ph5d3 eh -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 corners t ce..qpa8(drof 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, 1dq8 .(pea.ctr ). 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 placed iqqe0z/c7w ) jen a uniform electric field. Whatw/zce )0 jqeq7 is the magnitude of this electric field?

  A particle with a charge of 4.0qfq g-tx isag2 3gv.83 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 electric field of 6000 N/C poi8ykd2j yv./qpay)bd h2l -.x nnting downward. W )2d/p.nq8. l hv jkxyyy2db-ahat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge opz 0q;wwphc 83w bcm1.9r vg:9pd ;ycgf -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of9z h1;0bdvgw.p 39 mrw :c8ygpqpc;cw the electric field?

  A metal sphere of racxrne z4j 5(-bdius 10 cm carries a charge of +2.0 mC. What is the magnitude of-nb zej5 4crx( the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm c; sh7as;lb1b iarries a charge of 3.0 mC. What is the electric sa 1hbbl s7i;;field 6.0 cm from the center of the sphere?