State the law of conservatiot01qwi klf.- mn of electric charge.

  Is it possible for two negat2l;+kw accx7 ub2zc7w ive charges to attract each other?

  Is it possible for a positive and a negative charge 41r1dzram4 bn to attract each other?

  A glass rod is rubbed with a piece of *, luj ctce:4jb+sb2aqj2pw)sp 1 *i tsilk. During the process the glass rod acquires a positive charge atpl2q i*+eb)sb:w1c cp j4j2au*,s jtnd the silk

  A proton carries a

  The model of the atom sqojot3r s 3p+i6pg1w nt 9t)v,hows a

  A neutral atom always hvv*ae8o ( v;0v j.smnxyc(8phas

  An atom has more electrons b:jzr 9z,0voqoay61 h /wf6bg than protons. The atom is

  Materials in which the e8 x2 obbqz )744/wz i krh.x45upacfxpb1 nv8jlectrons are bound very tightly to the nuclei are referred i 4 zhb.x8unok44)r 7 c8fj25xpx pqzabvb1/wto as

  Materials in which the electrons are bound very loosely(i14xmnga;+y xv a.9n lbq 2cp to the nuclei and can move about freely within the material are referre9bpm+.xxq 2 ig;nv(ync 1la 4ad to as

  A negatively charged rod23zfkhoi55z 8q b ;ouo is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wi oifz 8uk zbq3h5o25o;ll be charged

  Sphere A carries a net posito( u28hctg l:zive charge, 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 groundt(ch ulo8 2gz:ed. Which statement is correct?

  How can a negatively charged rod charge an electrofpc x;m wo11q8(oao2rscope positively?

  An originally neutral electroscope is briefly touched wirgi 8/eu633 jzfjgg8 ath a positively charged glass rod. The electrg/8rj6u eg 38j3fiag zoscope

  An originally neutral el qz l l(tk2m6,ie(l:yfectroscope is grounded briefly while a positively charged glass rod is held nearfq litz(m l,ly :k(e62 it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.7 q61l( vxs p w*g1bz*afqa-ig Then a negative object is brought near the eleclp1v-bg7izq1* *gsa6fa(x w qtroscope, but does not touch it. What happens to the leaves?

  A large negatively charge1oekfy ,gg9+5m;k zfed 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 ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first bal1,g; ky9e5k+og fezmfl 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 Coulomb conslz f-am+ze6cq tss-9( tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by2i r.vlsr+bbn.p1 q+j a distance d. The first charge is larger in magnitude than the se.+ir rq bj1.pnlv+bs2cond charge.

  Sphere A carries a net charge and m1v*kzfxm-:q sphere B is neutral. They are placed near each other on an insulated table. Wh 1:kvxfmmz*- qich statement best describes the electrostatic force between them?

  Two charged objects k3zw9x5 /vuxssi:n9dattract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between them:9x 3kndsx5 /vzusi9w

  Two charges are separated by a distanc8f9/zlht, fm6o3s6 1 j:y i:rsgrkenb e d and exert mutual attractive forces of F on each yo 6l9 fs r,1:6zf t:sbnr3 jgi/ekm8hother. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a for az7fdq8lp;s,-agq cep/ +1h bce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separatio h7ea-badzlg1qc+fq8pp, s/;n distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are 8qrp9qv 52tkaez h9e(separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secea q9e khrz( v5892ptqond electron is placed next to the first electron?

  An electron and a proton are sep 1hzmv+-c aw8dw- qhn*arated by a distance of 1.0 m. What happens to cavm1 qwz-n+wh -d8h*the magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepaprx *;z:vs* oerated by a distance of 1.0 m. What happens to the size of the force on the proton if thezx*ve s *:op;r electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pmea, ce xbc (p ts9dz7/2,vv*placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it i(9m evpea * 7ccz /s,bxvd,p2ts 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 the square?

  A point charge of +Q is placed at the centroid of an equilateral tbdxrrroj45:z 212swc riangle. 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 thed4:1 rs2xj rzw2br 5co 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 a vxbf wuph.h +7ca1s 0aat y4,2nector?

  At twice the distance from a point charge, the strengthvhy :0n;6g/ tpd ,ijf3xfv-j j of the electric field

  Is it possible to have a zerosglro/cf x( j7/)l sx ifck5ro+36 ,gb electric field value between a negative and positive chs o gl5r /jbsr,/l (6ox7ckf f3+ix)gcarge along the line joining the two charges?

  Is it possible to have a zero electric field valf0la g5rx g4cig90,mzue between two positive charges along the 5iz 0l 40gmcgfx, r9galine joining the two charges?

  Electric field lines near psitive ph+5o 2 zqbgdm o,in6m3k 6j rx3.*ukl6v uktb0oint charges

  The electric field show7g(vq 9wq +1aarct)cg*zw ,nj n

  Can electric field lines intersecxpikj;z4 hdo(rt o70- t in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform (qfxp i w7etx,2e)xgo1r 9(rk electric field. Give a statement concerning the electric field9e p1)w7xxtor(xek( ,rg2fqi in the block's interior.

  If a solid metal sphere and af 2frk2f,)i a- pv(aaf z2bu*v hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface 2 *-,rvzkaffiuapvf2 fa2b( )is

  A cubic block of aluminum rests on a wooden table in a region020oh)bk v 6:mej 1o1xrlfper where a uniform electric field is directed straight upward. Whm2)60r l 0jrhvbo1p:x1ee ko fat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic ezmflf,j .bq6. quilibrium near an electric charge

  A positive point chapi51c ys8l0vj l q1f-trge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphe 1ics 8llt50 vp-f1jyqre, the electric field at a point directly above the hollow sphere has

State three properties bx+*jk, 4ctq cof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one e.eu+vwg4; xelsp 22gcs+ pt(q lectron 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 proto5daxshf6r 2s 3ns than electrons does thisd frhx6 2ss35a piece of plastic have?

  What is the charge on 1 kg cjz4 -m,zz tii+k kq*4of protons?

  An atomic nucleus has a chargsy9w/;n2t/chdl : vloe 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 0oi9thj0nme 6 and -4.0 mC, respectienti9jh m 60o0vely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charg0ipa elo(7 2 yumi8()hzz:esle, and the force between them is 1.0 N. What is the magnitu02sul ehy(zepm li)o:8z7 ai(de of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far - z5(:m nludfl-gy ,(juzry*wapart are they?

  The force between a 7f+hxrl k(gq5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 y/vu3 st6qrxoq ;4 )xbcm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the eleq sr3t)bu;qxv46 yxo/ctric force between them?

  Three identical point charges of 2.0 mC ar3p6 ug1udyb91 sa 1yfxe placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, 31s duypfx1ayg9bu61 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 placexpcffhstw6s 5r+.y2y ov.6w 6d at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at6yt6 cf5rv2h.ww oy6 fxp.+ss 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 ap bg0 6g4o.8ofso f7jvt the following 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 magnitude of the gp.o0 osf4 7g fjo68bvforce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, a0x *fbrg(w, eqywqc7 u31w+ sgnd a second point chargewe*wq 7,bwqu0 fc 1xs(+3 ygrg 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 snv 0e, d9wryf.:dl5a nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude oynesdv9ar0wd .:5,lf f the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);amp -z.c6tdft92a2pq Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fofa d29p a6-z.qctpm2trce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilato69cpjy -sab- eral triangle which measures 30 cm on a side. What is -o6bjy-sc ap9 the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q awx3km zqz8+q+ nd +4Q, which are separated by 3.0 m. At what point, omx8z+z3qq k+wn 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 zero?

  A +3.0-C charge is a9l1 g6/ mrmfmj8ht1qzt the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net fzm fjgmm/ 1t hrq19l86orce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at p j4(e ukqr/,7g)trfkhoqx 2:x = 2a. Where can a third positive charge +q be placed so that the forceq:7t,xkk(e2g4qrruj f/h op) on it is zero?

  A copper penny has avda7 6yt1l yu3 mass of 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 the force of gravity by the attraction of a8p7kxe a r9bz8 fixed proton some distance above it. How far above the electron is the a8z b79 prx8ekproton?

  Two 0.20-g metal spheres are hung b**z;8qb0u g.nbx(z enah uh)from a common 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 u;xhbebz)qgnz(n*h08u*a .b threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude o e*wn4ww*1p) ticmmueo +c e55f the electric field at a distance of 1.0 m fr+mmect5p i e1 we**c45uo ww)nom the nucleus?

  What are the magnitude and direction of the electrb vq2m fo,b60s** eaxjic field at a distance of 1.50 m from a 5*s*v0xob f,jmb aq26 e0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wha 7x , zkveyupqg,*5x-uxgvagd2el; q 1*s/7f st is the magnitude of the electric field at the location of the test chargeexs p2g/qydx,gvqua7lk5v;zf * x,* 1g-us7 e?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e, qcg4jur54ljc :y) mcuo+;rb4 q)r4b;cuglm o:cj 5 ruc,y+jlectric field?

  A 5.0-C charge is 10 m from a small test cha3ehle,m/vq9 h rge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargehq leh9/,mev3?

  Two point charges each have a vabwdz5d p;w zd;g cs,o4f+i k7(lue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poin;oigz dz+5 (pksf;47 dbcdww,t midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0cb(5i.jh duk;.hc ru+ mC charge is placed at the 50 cm mark. What isdujr+. chihb(uc k.;5 the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticz;c -r7dh ,xqbk and a -4.0 mC charge is placed at the 50 cm mark. Azb;hq ,r7- dxct what 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 5wctv7 hd*n:g at x = 0 and x = 0.20 m. What is the magnitude of the electric field a7w:hgvt5 *c dnt the point midway between them?

  Three 3.0 mC charges are at the three corners of se(mreb vv7, j-) h,ula square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elec )v- ee,l,j(v7b shurmtric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chajxuc.dne+rolf1a ( k hi0:9 jem.ee)/3vcvr2 rges 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 magnitude of the electric field at the square'+2 h9c()1le0e:edr3rjvvc kf/ o i..ax uejnms center?

  A force of 10 N acts on a charge of 5.0 mC when i cwg2 w5/k4dwzt is placed in a uniform electric field. Whatd 4wzwck5w/g2 is the magnitude of this electric field?

  A particle with a charge of 4.0 mC 49b 3,zpfyonqoocv *kn;)i1chas 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 i b:sv g9drjzc -0**-zwx3x hxts placed in an electric field of 6000 N/C pointing downward. What charge must be p* s bxg--xjc* dhzv3r 9:0tzwxlaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Theu,1 s-6,4md j kawbpgu ball is placed inside a uniform electric field, and is 14,ju pubs, adw 6kg-msuspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius j)/l 0tb)w cyk10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm)tj)0yb /l ckw from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cxq n+j;awhum )+p;d/ qharge of 3.0 mC. What is the electric field 6.0 a md;/++jh x )wq;nuqpcm from the center of the sphere?