State the law of conservation of electric c9hi4 x 27jhsneharge.

  Is it possible for two negative charges to 6h -,s+mf llhd.tiiz.attract each other?

  Is it possible for a positive and a negative c5j43q5 gutvvl7jak+ g harge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the ;c6 -n kj,*f t:kjwplwglass rod acquires a pp* fn: 6j;k jwtcw,kl-ositive charge and the silk

  A proton carries a

  The model of the atom shows ao+)g0noe +u 7vzemw4 i

  A neutral atom alwaysi l9l l2nh 2vkd-fc9k- has

  An atom has more electrons than proto17hzy*x;58pvokr2w qhc. cdx ns. The atom is

  Materials in which the electrons are v36hr-cg*i who +:maqx1j 1sxbound very tightly to the nuclei are referred:msqa ox*x rv +1h hw1g-63ijc to as

  Materials in which the electrons are bound very loosely to the nuclei and can moy3f5h0pxg 6kwve 5yw6hkxp03 fgabout freely within the material are referred to as

  A negatively charged rod is brought near onewkb2m 2xs;7tptg(e-f end of an uncharged metal bar. The end of the metal bar farthest from the charged -xebftm2ts;wp (72 gk rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra ylhb 1d /-fqe/nifj*1l. They are placed near each other on an insulated eid j/*ln qfh1-1ybf/table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscoj( w lqyu51dpt5w01 eape positively?

  An originally neutral electroscope is briefly touclxg (7ixzr 587p khnj7hed with a positively charged glass rod. The electrosjz h7r 7pk5 inl7(8xgxcope

  An originally neutral electroscope is grounded briefly while a positively charg76 u tttdb:-0cx2) +eogl0qk7dc u lmu,rhcm )ed glass rod is held near it. After the glass rod is tlxdm2cce m06rb gqu -0+u)d7:cho)uklt t7, removed, the electroscope

  A positive object touches a neutral elecnknhm9il3 ad g9,hm;; )yld s2troscope, and the leaves separate. Then a negative object is brought near the electroscope, but does l;d3a dgs9)2m ;h9lhnkiym,nnot touch it. What happens to the leaves?

  A large negatively charged object is placed on an 7uzqf9;ewiq 1wvy8 /winsulated table. A neutral metallic ball rolls straight t y iv 9z7u8w/1wwe;qfqoward 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 ball?

  Charge is

  What are the units of15qlrr;;4pl7drwir g the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge:h9hrg;ckkh+ ox, 1n p is larger in magnitude than the second 1hr9;goc:,hh kpxnk +charge.

  Sphere A carries a net charge and sphere B ul3kh)rbfdr.fd:;tf(l 45y iis neutral. They are placed near each other on an insulated table. 4d3 d5h.ifuyr fk;t fblr)(l : Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain for; 9 6e*sdbwfzjce. If the charges on both objects are doubled withsz*bjfw; 6de9 no change in separation, the force between them

  Two charges are separated by a distance d and dp4q2; 2 +7lx3a zs.ygecqombexert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual for yqb 2qza7 s+3d4ecm;oglx.2pces?

  Two charged objects attract each other with a force F. What happens to the forc9 7jj/fswyo/ /; nqsrte between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to ont7/w /fro;sjy s9jn /qe-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distan;dotp.uh0d/tw z; 5l ece of 1.0 m. What happens to tupz5.e d ;l h0;o/tdwthe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepa2c obn* a5ank g149jhnrated by a distance of 1.0 m. What happens to the magnitude of the force on h kacj4g95n2 nao*bn1the 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. Whatyk.v/b;p 1z tt happens to the size of the force on the proton if the electrz;t tk.y1 /pbvon is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centerx 5 piul2i5ym( 3ajbufy7h73s 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, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force yau (ix3i5ljbh 5pfysm7723 uacting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid 8,w*mbnk5h dq 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 the force that acts on the center charge due to a third charge of +Q placed at one of thd*nmw k,h 5bq8e other vertices?

  Which of the following is norywk, .pf k . bx7 pfwu0-lv8sa3p7z1xt a vector?

  At twice the distance from a point charg,r*: vosg)62nbd;l twg9 kocie, the strength of the electric field

  Is it possible to have a zero electric 2pguphzb.+e: field value between a negative and positive charge along the line jhp+e.gup: bz2oining the two charges?

  Is it possible to have a zero yw2+vt-j uqq 5electric field value between two positive charges along the line joiniqw 5ujt+vq2 y-ng the two charges?

  Electric field lines near q74sw2vfifb318g l atpsitive point charges

  The electric field show 3+ke0;gdnxh1aivzv 2n

  Can electric field lines intersect;ie)vbe49*pr t uh7o(iavx-j in free space?

  A solid block of metal in electrostatic equilibrium is placed in a :bepv0 ps(: p,r;mwr zuniform electric field. Give a statement concerning the electric fieldvebrps0 wp,z(m; : rp: in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ea0vhse/ a7w2p)vw/( d zdhced6 ch given the same chzvew)c/02/(dsdwap 6 dhev7 harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regionczach i/b-n.tc5 p9f, where a uniform electric field is directed straight upward.i,-5cathzc/c n.f pb9 What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibj,zp(;f cmed ;rium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that i .w/chlnj6 z 05/ qk.lbhqpbhb*f6,tts grounded. A h5nf 0jtq q66bkwc */zlhb ht.b.p,l/s compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduh2e:g smk vuo( t8-gy1ctors in static equilibrium.

State Gauss's law.

  The charge carried by one e/pi +3w.idkxylectron 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 protonr u2t7e ax6 lb).:yzpe1cp;:rutzm(hs than electrons does this pp zle :. umez) : (r7y6t2hacrtxb;up1iece of plastic have?

  What is the charge on 1 ko v qzguf:p37,q -/mplg of protons?

  An atomic nucleus habt3lgra 2.+q )ewf eq4s 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 tc)xkxi; (jtz9 kcuzi 84p4t 9cm, have charge values of 2.0 and -4.0 mC, respectively.4z)j9tt4ctuz 8 9kc(;ix pikx What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 d-9;a(qlay l ,)fadovpngqx 2az()m7m from a second charge, and the force between them is 1.0 N. What is the xydaz29)qadoa7lqvan g( ;-mf, lp )(magnitude of the second charge?

  Two 1.0-C charges have a force between 7l:5 ikw kcc+ ta+ p9b9sfq9vq,4zqod them of 1.0 N. How far apart are they?

  The force between a 8xz a,g0f*d. b2qtyp v$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience an;e6je n3 :xg;k+;lfufg m 3)6ccd ust 1.0-N force. If they are moved to a new separalc3fct6eg ud3ue n6 f+ x)m;k; js:;ngtion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on pm7 mpf( s.4 kks/*kqithe x-axis. The first charge is at the origin, the secos.q4 kpmkf/(psm *k7ind 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 mx*zmxonx os4-g y:4ss:1zf( rC is placed at the origo so(r xmz*:zx-441: xfg nsysin, -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 origin?

  Three point charges are located at t pogbt(gp 61dp9c * v8efc27cfhe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at t2p f8 (c7o dfcbv 6*egpcg91px = 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 placed at the center of a squtg0qkh: e9q .vb80 ekbare, and 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 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 qq evkg0k .8hbe:tb09at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, re.n zu2tt1 ,q0.10 m); Q3 = 5.0 nC is at (0, 0). 2ntqzteu,.r1 What is the 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 m);6l8-rbmhjkna 26 ul4a Q3 = 5.0 nC is at (0, 0). What is the direction of the net-8jl66al r 2hnmu k4ba force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verz;vigum hcgy04c, l --tices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forc,;z vgum4lh-0-cg yic e which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatw 9 /5phfsr0b im1z4wj point, on a line sb9/0mi1p zhrj4 f5 wwbetween the two charges, would 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 bt2obt3;b u3yi-o;x c5/m4y.msqh sm+9.0-C charge is at x = 4.0 m. Where on the x-y b4-yb3m.imt; ;sumt ohbc 3 2q/5xsoaxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 2uax hof 4h.+lgx9wr) Where can a third positive charge +q be placed so tl2u )h.rax9fxg woh+ 4hat the force on it is zero?

  A copper penny has a mass of 3.0 g. x0191m uj.bp q ,p4t/x y9+xkgccpkgf 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 fou nis7g:b +fc-rce of gravity by the attraction of a fixed proton some dista:b7un ci-fs+g nce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point b8sqiyjrms+f -kw tcod +ye**. 9cph* ;y nonconducting threads which cq+*hd fc s* m py.i+jwsro-kty*e;9 8are 30 cm long. 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. 31bf-whos 4o z:mp*e+b, uost What is the magnitude of the electric field at a dista1 phb3 zubto,oms:4fo es-* w+nce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a digpe(j c ujat cg/6;(8cstance of 1.50 m from a 50.(/g cj j8(ge;6au cpct0-nC charge?

  A 5.0-C charge is 10 m from a small test chaq v d+ v*fj3env,)am:mrge. What is the magnitude of the electric ev3va*)vn qj+, m :fdmfield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct.kygvj-z0l.6b tq aw9vopw3- ion of the electric field? tk -wz vgby0.pov q69-3j.wal

  A 5.0-C charge is 10 m from a small test charge. What imad:* sx/v ay4mo-s:y s the magnitude of the force-m m:x/:yy 4s*sdaoa v experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a v, dzjmwitg5cwje:x,, k,c :.talue of 3.0 C and are separated by a distance of 4.0 m. What is the electric fi,,ewczt, t, dwmx:5i.kjc: gjeld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m mb7)p2 lpz+xbC charge is placed at the bmz2 pxp)l +b750 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is place,5sc )knc5jlha rzvm .jq,2oz b8p/ c/d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on pjn m2kal,5s q/8ccv ho/5 b j.)zzcr,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. W6fgmv i 0d40b n6w2ftphat is the magnitude of the electric field at the point midway between the2g6 0ffw mb4 n0idt6vpm?

  Three 3.0 mC charges are at the three cov7 95sfhy)jsang- aq.rners of a square of side 0.50 m. The last corner)7v.hnafssy-j 5 aq9 g is occupied 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. -.(i vwd lzfff4mu .3h Charges are placed at the corners of the square as follows: d l.hwfi.3zm 4(fu-vf +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 magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when8dy *xe cd-h1k it is placed in a uniform electric x-k1yhc8d*ed field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 q(9 kwnyzf4nt/,ijx0v8(b cmmC 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 ehd k)ns2ps*x4 (fvl-p qs02lof 6000 N/C pointing e(2lxpkhs04*2fvlq p -dns)sdownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 ,d r9riq(w 1w jmpup,k.1 9rzgnC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magw, 1dmpi rr(p9u1 9jrz.q kgw,nitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.ouv;lv7m4 y.o7q ,yci 0 mC. What is the magnitude of the elyivo; v,u4l .c y77omqectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electr/lz a4g6d3+qvq mmb9z icmzdz+bmqqg 9a3/l4 v6 field 6.0 cm from the center of the sphere?