State the law of conservation of5k- ;oean5dzh;yruo 9 electric charge.

  Is it possible for two negative charges to attraw6t dwe vh5 p -2ev2p9g6yq;noct each other?

  Is it possible for a positive and a negative charge to attv1b5q3lkrqd+i f 8l1r ract each other?

  A glass rod is rubbed with a pqer r+j/wmntgs ) .3z0iece of silk. During the process the glass rod acquir+s zqrn 03e/ ).tjmwgres a positive charge and the silk

  A proton carries a

  The model of the atom shoc q,ic 8w.b)ycuay79mws a

  A neutral atom alwaysjtkwva w-0.rfi (6-tdyrm )*p has

  An atom has more electrons thanamqp (dyt:b og* +j)8i protons. The atom is

  Materials in which the electrons ark v7bvuzf u2w/r( uh;2e bound very tightly to the nuclei are referred (7vhb;vu/ w kur2 ufz2to as

  Materials in which the electrons are bound very loosely to the nuclei gk223ya-,ys i n:ew3mbkr9cpand can move g im,3ky2y k3na9ecrs :2b-wp about freely within the material are referred to as

  A negatively charged rod is brought near one end of anj6v3:h +zx-ikh2;je rnfu .8 ky koj,w*)plcn uncharged metal bar. The end ;jwn 2rc-nzl6uh+y8.v,kx :jo kehk *3)if jpof the metal bar farthest from the charged rod will be charged

  Sphere A carries a net poscet-wyu :se7fj8r * 3nitive charge, and sphere B is neutral. They are placed near each other o e8nfr7-jt 3 :ucsey*wn an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro7x f 3rkzey3;id charge an electroscope positively?

  An originally neutral electroscope is briefly touchg bfcyp3 +xy7r10dj3ted with a positively charged glass rod. The rtg1d+7cjfp0y3 3yxb electroscope

  An originally neutral electroscope is fdssd m1 j4hur wr6-/j:yj 6p8onyob06bac*0grounded briefly while a positively charged glass rod is uj8d:w0 6bcy0ha16 mn6orofb/p *s4yrdjjs-held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separatv npztqzq6m;--3 sqr (e. Then a negative object is brought near the electrosc -qtvm;zqn(3sz6qpr -ope, but does not touch it. What happens to the leaves?

  A large negatively ch+vh1jpbxv4gi l e0d4+arged object is placed on an insulated table. A neutral metallic ba1vv+bph lx gde0i+44j ll 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 ball?

  Charge is

  What are the units of the Coulomn+ zsf,ly 44ba 7etn+gb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatu u 8)51pr1krkqj;ehp ed by a distance d. The first charge is larger in magnitude th1rku;51)8rejhq p kpu an the second charge.

  Sphere A carries a net charge and sphere B is neutra*j:jwlguit2u)h 7n/ fut)k/k l. They are placed near each other on an ins2*t n jwu)f:u gh)/tklkuj/7i ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other withq c3g)rbizhoi sp.fe 6g3x +-/ a certain force. If the charges on both hgisbip r3g cf+3-z. )oeq6/xobjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive force,zsb:34mpj rhyx-(:-k g wj*bmhqb*bs of F on each other. If the charges are sep:jw(bmbs4h b *xzp- *,hj-rybm:kgq3arated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hap)hzpqw v0y e8+:zj9gipens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwee9p+):ziw ze8 jv hgyq0n 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 n u(nodps6ks s32np; h7ly(k9distance of 1.0 m. What happens to the magnitude of thesdn6 n n;skh7pkus39y2o (lp( force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distanceawo1b;* fjt0 i of 1.0 m. What happens to the magnitude of the force on the first electron if a second electro aft; *ijb0wo1n is placed next to the proton?

  An electron and a proton are separated by a distan)vikac5/+ve nce 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 the prot+ivv5 c/kn ea)on?

  A point charge of +Q is placed at the center of a square. W4 n/s9q493qfnfzdq j rqkxp 1)hen 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 acting on the positive charge pqs)dqf4qrxj/94kf nz3 1qn 9 at the center of the square?

  A point charge of +Q is placed at th-9u(5mibz*dl qj2zjs yu15z s2r4gh oe 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 the force that acts on the center charge due to a third charge of +Q placed at one of the otheom525y 9bq4 gr-ud( jzzjlss* hzui2 1r vertices?

  Which of the following isy3- cszdq;v+,yb vgu zf.mo39 not a vector?

  At twice the distance from a poil ()qr 83c dm2rfpe oxvsmf.r8sp2x+em 4d r-4nt charge, the strength of the electric field

  Is it possible to have a zero electric field value .l- eog;myp b:between a negative and positive charge along to. pb:me- g;lyhe line joining the two charges?

  Is it possible to have a zero electric field c fce8emr p;km8:8ud3value between two positive charges along the line ;e:cd m88 erc8pm3f kujoining the two charges?

  Electric field lines near psitiv6.lpamq *g i6qe point charges

  The electric field shr46fogv4 b xs(8tc mp7own

  Can electric field lines intagbbg nm ())kd)mfl2.ersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifog,g c387 gjanjyi i6z/rm electric field. Give a statement concerning the electric field in tg3gij7jz ,y /ca68n ighe block's interior.

  If a solid metal sphere and a hollow metal sphere of equal o3a :t14rumut0oc uo2diameters are each given the same charge, the electric field (E) midway betwee0cou ru2a1tm u:o 3to4n the center and the surface is

  A cubic block of aluminum rests on a wooden tabl6jrgr 4gn37b56jsalq e in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block'54a slr3ggqj66brj 7 ns top surface?

  If a conductor is in electrostatic equilibrium near an electric chawupp+.+b.br+fv5od x rge

  A positive point charge is enclosed in a hollow metalxwr1l;ffo:,* h a2auwlic sphere that is grounded. As compared to the case without the hollow sphere, the electrfou21 rhw a; ,:*fwxalic field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium. a i0in( ;bz4s8jal:wx

State Gauss's law.

  The charge carried b*wsdx9btm j/d5 9p )epy one 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 hqfi: 6wn vd iyp19zj84aaw)a)7b py0cas a net charge of +2.00 mC. How many more protons than electr7 c01))q iya vj nbw6wpdi4yp 8aa9:zfons does this piece of plastic have?

  What is the charge on 1 kg of pr eq,, vpp3-i6yz;kbgby - )ctmotons?

  An atomic nucleus has a ch4 uvcb dcchd6/b;+z -; vtx+uxarge 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, 4j5x i15aiw eehave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw5 ex1 ijew45aieen them?

  A 1.0-C charge is 15 m from a second charo2iam88ngpt 5ge, and the force between them is 1.0 N. What is the magnitude of the second igm25n pa8t8 ocharge?

  Two 1.0-C charges have a force between them of 1..9an1 mj1dkc3b k imt/0 N. How far apart are they?

  The force between a f,1y2bfuj/*;p yk kov$30 \; mC$ 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 they5(izz4 )bvr8wu8u/6 fxems o v are moved to a new separation of 8.0 cm, what is the electrs 5e ofuz)v8/ z6uim8(x4wvbr ic force between them?

  Three identical poin skcy:60d)wwb t charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, a0ww yc:kdsb)6nd 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. j+l* 6zc 6bxc9flora d+ iey,0A charge of +2.0 mC is placed 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 origoez0 b*crxl69jicfy+ ,6a+ ld in?

  Three point charges are located at the following positions:,zxkwg;g k;v0s t.6hu 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 th6h,.0 z kxt;s gukvw;ge magnitude of the force on the 3.00-mC charge?

  A point charge of +Q isur -r h me i5:ug4nx1+hhb0b6q placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electru +uxn rghm0q5 b-hr:b46i1heostatic 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 mdlu 9n up8lbnwn.: +gslh-1 f7); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net for 9unwl-7plbgs+ dlf n.u:8 1hnce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, o we6 kz.hafv0,;9 wgp0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction ohv6.ae 9gow;k0 p zw,ff the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equi oj4yoj5:( +xxcobq5blateral triangle which measures 30 cm on a side. What is the magnitude ofjo5xjc+b qb: 5(oy4 xo the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separate-9l*w0hana,h egp za 3d by 3.0 m. At what point, on a line between the two charges, would it be possible to plach-h,n zal0eaw 9g* pa3e 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 chaz/hei8ai5ria/v v)p. kp edsz+d4;*7 wlvf c0rge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forcea zsd 07lh 5pw4z.;)fi/ii v/p*ck 8 vaed+vre on it is zero?

  Charge +2q is placed at th51zzk w7mi .m x-.gpndfwk fi*u57v-omulz ;0 e origin and charge -q is placed at x = 2a. Where can a third positive chargf.zk5dl*ugmfku wi xm1ow0 -75p-nm7i v.;zze +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A ty5k:6exps5 qh5w uq -botal 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 attraw)ms jw xar40/oc1vg+v3vr a 1ction of a fixed proton some distance above it. H) v 04 ovg1 jvrmr+swaxa31c/wow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncond*oyjnbszj5,q5qy3gm7z+: zk mz8 iq/ ucting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betw q mm:bsy5zqz zjio gq/5,87+*y3nzkj een the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of thev6 wjl:r 3veexd+xgq/ 0h/5 ov,4erbo electric field at :3v 6j/ 4eeoqv / bxe dhg5v+0wxlro,ra distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electnh 11j n9+)7.1vta tkry yjqh9:cvgguric field at a distance of 1.50 m from a 50.0-nC chy 9j1k1+t hvyrgjc nh:qtna. g )9v71uarge?

  A 5.0-C charge is 10 mw:b;li n4myn x i:,r(l from a small test charge. What is the magnitude of the electric field at the location o(i mb4wn:ll, :;xiyn rf the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirzkj aduy :2p 8za/h09oection of the electr8 290/oha:kjuz dz payic field?

  A 5.0-C charge is 10i+imrjx8z l:2*yco2bp b 2u4 ybi,+qf m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loca+x2y+uib ji8im l22b:ycz 4q,*fbr option of the test charge?

  Two point charges each have a value of 3.0 C a(f je89n 0a/ kfpevb/gnd are separated by a distance of 4.0 m. What is the electri jfvkfapb g/9 (/8e0nec field 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 g,ndtx 5q,4ts mC charge is placed at the 50 cm m gtst,x5q4,dn ark. 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 *0 4zrb8*uo)fpx * dhxkt6,bfc+cjgi2f3n va charge is placed at the 50 cm marz**fx 8* tcpub+ gh20c, rx6 j)n 3okiffva4dbk. At 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 at x = 0 and x = 0.20 m. aes +mx:jwuu5dmvt- *z0h70 vWhat is the magnitude of the electric field at the point midway between th0- xut07s*mmv ze5 ujahwvd+ :em?

  Three 3.0 mC charges are at the three corners of a square of bl. 2 j+ng9iguside 0.50 m. The last corner is occupied by a -3.0 mC charge. Find tu29nbjgil+ g. he electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges arum aj51y b,el:e placed at the corners of the square as follows: +:labye,u m 5j14.0 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 acp8 (.ni h.1dk*oznfs qpup8+ charge of 5.0 mC when it is placed in a uniform electric field. What is the magnit*(hpn.1n+f k. pops8cudz qi 8ude of this electric field?

  A particle with a charge oepb/ vzv./h2) qy-qc cf 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.j*z9qlvzj /m huje4o*bd4t (,120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be sub*eo,(vzdjtzj/ q9mu4l4* hjspended?

  A foam ball of mass 0.150 g carries a charge of /cj(xs )y9z am-2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the fz(mysx)j a /c9orce 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. Whatt+w o5w c s /wyj*eual0+z+d3r is the magnitude of the electric field 5.0 cm from the sphere's surfacewzw o3+/+rdyuj0l*+ csta5ew?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wvibmm:w):i.d jmf/3u oh 9wa7 hat is the electric field 6.0 cmh mmj3iaofvwwi7./m 9b)u ::d from the center of the sphere?