State the law of conservation o6 zdjdg,7/yhk )y*a3 7cpuxpcj m. q)vf electric charge.

  Is it possible for two negative charges to attract eachwwl4:r 9g(wqo other?

  Is it possible for a positive and a negative charge to atjhmy -fd 6dj/p ;,9wvka-l1ng tract each other?

  A glass rod is rubbed with a piece o1zt:a6 9 r nyn9dtmgd;f silk. During the process the glass rod acqn :d9tg1 t6 na9zrm;dyuires a positive charge and the silk

  A proton carries a

  The model of the atom shows amsu4lb ikd t.c6-6 pl8

  A neutral atom always honv;wi*5/.o ,b.n h ukori5 nyas

  An atom has more electrons i,ubosy7sr7g10be 0 mthan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei 8 fb r6fws7.blare referred tobs6r8fwf .l7 b as

  Materials in which the electrons are bound very loosely to the nuclei and can m nxe89wvv5cx; rmog96 iix11jove about freelyc1iwmenj 8vvx6g 95 ixo9r x;1 within the material are referred to as

  A negatively charged rod is brought near onua8 -ky yyh3utu (s ;8h,kvrz5e end of an uncharged metal bar. The end of the metal bar farthest from the chargedt - yyukh;zu y 588vkra(3u,sh rod will be charged

  Sphere A carries a net positive charge, and spheh-7z:zcfx * qt5b rj j*s;94bmeqt8jare B is neutral. They are placed near each otherrzzb4 qh7bsq*f;ac:x- jtm8* 9j5je t on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro ps h77lvgy4/m 9-gdrqd charge an electroscope positively?

  An originally neutra5anm2lanfhh.8* .0jx jdpu/w2e3o kel electroscope is briefly touched with a positively charged glass rod. The electrosm5n* ae dx.2a0lf/3j .8h wkju 2nopehcope

  An originally neutral electroscope is grounded briefly whilm,b-zh lqwv-/ci pl /qyvn*fr l)/ /i:e a positively charged glass rod is helqqc-flm/*n- l/,vbvi :zyh/)rpw li/ d near it. After the glass rod is removed, the electroscope

  A positive object touches g,8f7oulr ;*m8km5ku i1y zd ba neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaf;1 *korm,k885bz ud m li7guyves?

  A large negatively charg74 ,:xzarjuz3+ ouevned object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball4: 7zzu,exv ou+j rna3 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 the nk19ja9+7mf u c xmo)wCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sep paun/),k80 z,jhi1-akeuzfq. ch 4kx arated by a distance d. The first charge is larger in magnitude than the s .pkhkqxh aicn)zfu z4au8k/,j0-1e, econd charge.

  Sphere A carries a net charge and sphere B i9fos gc9 j4j2i wne(i0x6+xr ts neutral. They are placed near each other on an insulated table. Which statement best describes the electrostati2jts+r i0i 9w4o xeg(xn cj69fc force between them?

  Two charged objects attsl-xe) ;+ 2ul,hpt7hwcn v+czract each other with a certain force. If the charges on b 27uv+p -henl)l+; cw, hszctxoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcfcp * a mlz4:6qkingxb 1q+o:ez l7,)fes of F on each other. If the charges are separated by a distance of d/3, what are the f1 q*g,)az6 :i pellb:ofqc 7xz+m4 knnew mutual forces?

  Two charged objects attract each other with a ffne;)f1h cv- ag7y9bzorce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the 1nvca7g-fh9)yz bfe; 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. l-g g2ew5c 048k pfdyi What happens to the magnitude of the force on the proton if a second electroncpfg- ie 48g0k2 wld5y is placed next to the first electron?

  An electron and a proton are separated by a distance 8)io/ :i+4g bpple mypof 1.0 m. What happens to the magnitude of the force on the first electron if a seppi ly e:m b)po8+4g/icond electron is placed next to the proton?

  An electron and a proton are separacqv9u67qk2ko n7d/fl qg+iv,ted by a distance of 1.0 m. What happens to the size of the force o vk9+k7 qclnq ,odfui2 6qvg7/n the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a s hgsi.l 27)b4tgdv q hsj-l2.lecond 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 is the magnitude of the net electrostatic force acting on the positive charge at the center of theslt-4bs7i gd h2)qg v l.hj2.l square?

  A point charge of +Q is placed at thm4 *xh/zt; 6uaut:ialckv ryd+i- v32bzz*w 6e centroid of an equilateral triangle. When a second charge of +Q is pliz6wt av d/iy+ulmtzc xa 4hz:3u6;v- *2*rbkaced 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 followinfd xqeqno28f.w/qeu 4e:8uf +g is not a vector?

  At twice the distance from a point charge, the s2f 8 mp7zxs+q 7: x uxg.qmv.b:pe1tpytrength of the electric field

  Is it possible to have a zero electric field value between a negat/.alest /9max ive and positive charge along the line joining the two charges?e s/.9ml/a atx

  Is it possible to have a zero electric field valub1;g;x;g/y2ent w ogy e between two positive charges along the line joy otw; /;gxegny2b;1gining the two charges?

  Electric field lines near psitive point ;,;aa v6+e3d 5;xtmqw2pyb kwzo o-s jcharges

  The electric field shown t je8 fcy:n4fk sx+/)f

  Can electric field line22gd3+hlpevao:5pzx v:+vp ss intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elebb xf.:pv;ag2 n/(a 1k z8qkwnctric field. Give a statemenf;b :g2.nk bwva azq1nxk/ 8(pt concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal s5yjuh4-f/ e xuphere of equal diameters are each given the same charge, the electric fieldx /h4-fje5uyu (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where 1 (;ov c urrk(kz.6viia uniform electriv;1ruc6kr(( k oi. vzic field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostantk fd+jh-oyd/ s w1:,tic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groun9( 2 lky zv,oibs wj,ly(11(zr5bfaocded. As compared to the case without the hollow sphere, the electrik2b lrc,oz jyo51fiwa,(b1s9 (yzvl( c field at a point directly above the hollow sphere has

State three properties of conductors in so /ncps1ga.a.v3 futxt + o1w;tatic equilibrium.

State Gauss's law.

  The charge carried by onev76 gnm6ya ayaz5la6. 8xc4ow hmk:y0 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 m2p)msqz8srjqe kz,,7 any more protons than electrons does this piece of p m7k,p),zrssqj8 2ez qlastic have?

  What is the charge on 1 kg of prj7j9.2akga j0io t688.j7hg pq ndybpa 3sk,wotons?

  An atomic nucleus has a charge 4:8vi q z;k7oran7wofof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepwj3m7+;kpa wlh g18l qarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betww kgh; 7q1lpmj3 a+lw8een them?

  A 1.0-C charge is 155(jp0 k .zxnvj m from a second charge, and the force between them is 1.0 N. What is the ma.j(vp 0zx jkn5gnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparhr w vba.m3vtk+0 t:zdh2qb w*wi9 90mt are they?

  The force between a -,fye6 3l52e dkszsjw$30 \; mC$ 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.eck44ws a0 3c gaq(idn*ng/9i0-N force. If they are moved to a new separation of 8.0 cm, what is the e9e /*aca(4sgqi 40cn d3winkglectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-awpbn iji,8mo.1x(q(z (i go1qxis. 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 of th xzbn( o. i(pw1q,m(iio1qg8j e electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A )rmx8ryw)l1q7( ezi kcharge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and + wmk1li)e87 )xrz(qyr 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 followdvk+ci6k5 le+ ing 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 magnit5d+6kic+vek lude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the xuk38b ec)y ,rcenter of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrc) x8,3bryuek ostatic 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); Q3vkt f/8, 1zode2 rx+.xwedbg8 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thet8dv 12r8+ xe, dbf/k.gozxwe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)a9 ffetinm(n* vs ,c0(; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the di*fcn( , sn(a9tivme 0frection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at 8b-qb1wub n+ethe vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elecb e+8 un1qb-wbtrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. wd10u9)v c t:jw-eoceAt what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actinw0u1)j t c9woc:eevd -g on it would be zero?

  A +3.0-C charge is at the origin an5 aq1ftbeirlr5um 6:c;6bq8sd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placedf : 18ul6qc;6b eis5arrmqb5t so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. W2* zw0fqk,e e 1u5gxivvxh4f 9here can a third positive charge +q be placed so that the force on it isxqf * 59h0gwi1v,vuxe4z2 efk zero?

  A copper penny has a mass v mzbp vwq a:+cxv +; /..zs9l0aar)hcof 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 2jz(d1mdy0 c0qe6noil k c5d:against the force of gravity by the attraction of a fixed proton some distance above it. How f 26e5mdq c1o0 nly kjzc0:dd(iar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poinav0eb)bsd :jzi u,,5t e 3zi.ut by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until th.a3ebuj , zs ,i:btz05idveu) e 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 the magnituhkrmv gvp2.lc r m0,:/de of the electric field at a distance of 1.0 m from t2m.lp0gmr vhr, k/:vc he nucleus?

  What are the magnitude and dinzgt 3rt :x*bfpedx5, 42 tk:t-byv0trection of the electric field at a distance of 1.50 m from a 50.0-:t r*p f3-nztbx4,y bkx 2t:dvteg0 5tnC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thecer, :q d2ezna9gq )7e electric field at the location of the test chaq)ed 2nee:rc a7 9qz,grge?

  A 5.0-C charge is 10 m from a small test charge. W8akz-d ( 8qqeihat is the direction of the electric fizk a-dq 88qe(ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud9ean -nd37o, acl 6m adn4owf+e of the force experienced 9awo4 c 6mnlado3 -eda,+7nnf by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each htsz4 wq5r tv45ave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midw545zwqv 4tsrt ay between the two charges?

  A 5.0-mC charge is placed at the 0 cm markuawzqq)6)72w6g nllu of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. l6zgqql6w7 2 )wauu n)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 vq1 7lkmyt(i7 -4.0 mC charge is placed at the 50 cm mark. At what point o7qtmi17yv(lk n 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. Wz.tvvogyx6 6s99p u*p2en3qxhat is the magntuv6 g.s3ypxoxv*pzqe2 6 99nitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at (:kh2; zqdtyvs;0 3ekstb pe2 the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fk0vyp(ts2 eh;3dqsb 2z t:e;k ield at the center of the square.

  Consider a square which ygd 26 u*9bgp1 q5 sra1 *ikumekl5cj,is 1.0 m on 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); -3.0 mC at (0, 1). What is the magl2gr*yajqci1,sk*u u9bpd6 e51 5k mgnitude of the electric field at the square's center?

  A force of 10 N acts on ojn(se l9m i0 0yubv.bib)u(4a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric 0i bobyi9(4ej 0(lb.s unu )mvfield?

  A particle with a charvbb0t8fta;n s r6 -ns3ge of 4.0 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, y- ox (gilqa-(pz*hf+wc m0d pointing downward. Whm hlca(* -gw yifx0p-,+z d(oqat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrfo:jqc dvhf*, yz5qe6 es .,e5ies a charge of -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 of the electriehqzf 6., e,v5o :cfjd*qs5yec field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whaty,6vegxmuc;pqiy aeb;(z )c 8 -/w- dt is the magnitude of the electric field 5.0 cm from the sphere's surf;;/i pza-uyg6 8qv,)xd bmeyt- cw( ecace?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What ish5b-vkdn//f n3s+xg fre; 9ssa;a o/d the electric field 6.0 cm from thsgnn d// a+;vd9srx 5o b/-h;seffa k3e center of the sphere?