State the law of conservatiovv++)du cxfn5qcp-: g6q/ kt sn of electric charge.

  Is it possible for two negative charges to attract each othew6fzuz;f,bz ;sog1u +r?

  Is it possible for a positive and a negative charge :g sgr9qug/t c4zsyw(n cf;s 564*zjes* lfy+to attract each other?

  A glass rod is rubbed with a piece of silk. svs81zb.hqy -i + y8xd During the process the glass rod acquires z yhsi 88sd+bx1-v .yqa positive charge and the silk

  A proton carries a

  The model of the ato) g5;um9 ppy*k pwcm7qm shows a

  A neutral atom always has8x l3j4tzy6wyu1lxyq.n 1u +l

  An atom has more electr-1f 2zbs5sl sqons than protons. The atom is

  Materials in which the el2 4j1z*2+qpxc4.m rumyteidj ectrons are bound very tightly to the nuclei are referred .cyze2dj* 214pt iu4mj+mqrx to as

  Materials in which the electrons are bound very loosely to the nucle 6/d*h+ isyw)(y zu5 vwsnqfil u)9ec8i and can move about frezu9 8/sy vfywnhdse)+i *w)c6il(q5uely within the material are referred to as

  A negatively charged rod is brought neaupj))m5 az h+er one end of an uncharged metal bar. The end of the metal ba5ueh azjm)p+) r farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tvgq, 5mwy330dc es.ychey are placed near each vdy,eywc50 m3s c3qg. other 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 0f 4wi+vgxbkr k4z7gm1 6kagn,t6s 0hcharge an electroscope positively?

  An originally neutral electroscope is brieflgzns7 2f-9 x mugrw/(qmz*jt/y touched with a positively charged gnq /fxmjm -/2 *ztu9zwg7s(grlass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a pos *)lvr9jgvm gwqum9d+ z3 z.8aitively charged glass rod is held near it. A9u8gamj+3lw zmzrvg * d.9qv)fter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavea 1c4hl;i (qgws separate. Then a negative object is brought near the electroscwqlh ic 1(g4a;ope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. Al3jlzs uc p5-49gzm0 j 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 4359lj0cgjzl -pzum s 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 of3r 3tr kqu*d(y the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fir/km8tmz,5 /op zu l-b0i 1zymhst charge is larger in magnitude than the sit mm0hb z/-,k8 upz15 omzly/econd charge.

  Sphere A carries a net charge andu;bwkp-d8q 0ld++ mxcb iw 8fo/(*iju sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes tb*k pq d+x;dwiwmuc-j/ u0 lbo8i(8+fhe electrostatic force between them?

  Two charged objects attract each other with a0 /qty6kqa 6qr certain force. If the charges on both objects are doubled withqytq kr/6q06a no change in separation, the force between them

  Two charges are separate+pfp egsp5c/ *d by a distance d and exert mutual attractive forces of F on each 5/sf*ppc gp+e other. 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 force F. What happens to mitipyckx87l e;dta)3; 2* zuthe force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is i87pua)diy mzl*2;etck x3t;reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 2/ uxune2rf mmwq a90hp0+su*1.0 m. What happens to the magnitude of the force on the proton if a second elect urua0e2wmh/q9s*n 2 xm+fu0pron is placed next to the first electron?

  An electron and a proton are * h 7xv*4zpviun-(hq hseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the ( q z-nph*viv h4hxu7*proton?

  An electron and a proton are sepaojo j+:r9 djs8rated by a distance of 1.0 m. What happens to the size of the force on the proton if the ele 9o8+rojjjds:ctron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second 4hltocij*( lk/ cv9a-(k e8tcpoint charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N aco ltck8hvi(4- cjac/e 9lt(k* ts 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 equilateebd v:f6 cfp-*ral triangle. When a second chargvfpf*b 6 d:c-ee 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 other vertices?

  Which of the following is not a vi5c6 - ssz-z5y3he 7feqpt6spector?

  At twice the distance from a-h,o jco)(wfka8;;7or mw2/mnhho hk point charge, the strength of the electric field

  Is it possible to have a zero elect)h u2 72*5w q wyyb(lap4fvek hr4f-taric field value between a negative and positive chargetk7w-f yvuf*wl2q y r )pbh44 2ah(a5e along the line joining the two charges?

  Is it possible to have a zero electric field value between two povczebsm2r2w92 4cwg--/xkq t sitive charges along t 2 cb2g49wq2wzct/x-e vs-mkrhe line joining the two charges?

  Electric field lines near psitive point ,0tr 2z cr1copcharges

  The electric field show(epm+;5sd w)cpiulo. 7 1 cdmin

  Can electric field lines intersect in free space?(rjy ghjln i(/7t+(* 6kuo 6nf;wfebj

  A solid block of metal in e0vd)m x+fdy9yj30 czrxd*i 0rlectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the el0c0 j0 ) md*3dzvrfrydyx9 ix+ectric field in the block's interior.

  If a solid metal sphere and a hollow metal spherw7qlhy hp /pezz(c6hz/ 56py+ e of equal diameters are each given the z+/e7zp wh/pc yp5h6 zh6(qylsame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifo36a l 5v.-o7dmr- znlroeoy)srm electric field is directed straight upward. What can be said concerning the charge on the bloclvn6 l3dm-5-o z eo7r.sy)roa k's top surface?

  If a conductor is in electrostatic equilibrium near an eliu m*rq6l3j*bectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grohho x;4u jk71i uif+p4unded. As compared to the case without the hollow sphere, tu+uji p7; hk4 14xhifohe electric field at a point directly above the hollow sphere has

State three properties of conductors in .mjak: q.4oyiut)z)q kgz;.n static equilibrium.

State Gauss's law.

  The charge carried by onetf jo7ec; v.9k 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 many morm3y;v3oi+k tge protons than electroyt3;3im og k+vns does this piece of plastic have?

  What is the charge on 1 kg ofze4p xju*r0t5 d dfw+, protons?

  An atomic nucleus has a charg01rzzs c 5b8mpe 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 valu 7 cnb-h,*yjr.nv.b .u/icvt mes of 2.0 and -4.0 mC, respectively. W.*incnrb.h7j.,-m tbc vuy /vhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargemt d x.hpsf*1(, and the force between them is 1.0 N. What is the magnitude of the second c s*ht.p1m( xdfharge?

  Two 1.0-C charges have a force between them of 1.0 N. How far at90bnf7ypl6h6xs 9/ sxsy1 cupart are they?

  The force between a qdplq u , xwyz/4k*;z+$30 \; mC$ 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 themeyd t-;bcdb*v: u v 8*l6x6vzy are moved to a new separation of 8.0 cm, what is the electric force between theub v;bz d y:edl-t8c* 6*6vxvmm?

  Three identical point charges of 2.0 mC are plac l1k4hoy*urawvj (08phx:mv 3ed on the x-axis. The first charge is at the origin, the second to t(kmu :0pyvx1w8ah*vjl rh 43ohe 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 pladr cd qo9v u; n+hau0 8ba0+wq2u(mji0ced 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 tqu2v0udwa rid8b 90a(; +c0 umnjh qo+he electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 (h.ky,kp vlj;t;xn4 x 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 forcey,kvp ljhxt4 ;;( .nxk on the 3.00-mC charge?

  A point charge of +Q is planh*k/ 8ay4uvo/ kqd7bced 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 electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of okkd*7y quvn8ha4//bthe 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 = .mc lkga7b8sn/*7sn x07e* rhwg uzry 7d4au4-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thex47bal wsn md74ugs8 z7 *rg*ry0nc7.kau/h e 5.0 nC charge?

  Q1 = 6.0 nC is at (0.: nax ky8m6;tq+kvmo )30 m, 0); 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 force on the 5.0 nC charg+akny;q6 x8)ovmm t :ke?

  Three identical charges of 3.0 mC are p0bq;tn p4s .ovlaced at the vertices of an equilateral trins ptbv0o 4;q.angle 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, which are separated by 3.0 m. At what8hzm t+h1wuf3l e hj38 point, on a line between the two charges, would it be possible to place a charge of -lt38j3u +mefw81 hzhhQ such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin anevfy5x0zu 13(cwg k; cd 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 force on it is zerof(1 u5vkczexy cg ;w03?

  Charge +2q is placed at the originen.;1gnkd 9ng4kzu1jkz (gc2 q0gb 4 n and charge -q is placed at x = 2a. Where can a thirdgu9.nzn zgqj1e 2n0g1 b(gnkk 4d4;ck positive charge +q be placed so that the force on it is zero?

  A copper penny has a mas)9v:joje(lnlvq9pmo v 3 i -/rs 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 atksy l5;v( 2gs2u, 29veuqnul ctraction of a fixed prot,(u9 222ul ngv;5ky qcv sseulon some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hu 3fpwo+w; vsws7 eftw7e-yj7 +ng from a common point by nonconducting threads which are 30 cm long. Both +otfwj3; f7swe 7-wwys7e+ pvare 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. What is the magnitude of t 8xg/j0+ aso5wcfkbv/35gyyohe electric field at a distance of 1.0 m from thg5fy bkc0x/ +yo/so 3vgw 5aj8e nucleus?

  What are the magnitude and direction of y6)ev pszjn**,g8 ic/ q+wewh the electric field at a distance of 1.50 m from aqz gcw * ,+j*sw pen/8evhi6)y 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What iskw/n ifm34 p2s the magnitude of the electric field s/ p2mkfwn i43at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is(m kx8 7lqj.5d3ajlsi the direction of the electric field3lj 58lija(kx7 ms qd.?

  A 5.0-C charge is 10 m from a small test s :ibb. h1e7aeh+ -pfycharge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of +1b:p.ea fhy e-ib7sh the test charge?

  Two point charges each hav2rl vje42a x51u*ldw ve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chdlwl5*2v rvj 1ua2 xe4arges?

  A 5.0-mC charge is pwmg*;ws0 q;wjd f+ z: (*ycxrfvo3ly/laced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at twyl+ zfj(qw y;go*v;w sr fcd/x3:*m0he 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markt yi5 2 w(m:d;g1s)wb asz2nrs of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pora5izbtg2) m1y;:s( wnsdsw2 int on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 ,us1+qg i ;wmfmC are placed at x = 0 and x = 0.20 m. What is the magnq 1wf,g u+;smiitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cortr1-vby zj e+6 vc+eb.ners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cente1jvtzr .6-be+yvb c+er of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corner (swg0 ivhy;2xs of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3(s gyw2vh x;i0.0 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 charg8hh4co9t m4akwm-qhr :)yg. s e of 5.0 mC when it is placed in a uniform electric field. What is the mcqthg hy.ha4o)w k m4r89:sm- agnitude of this electric field?

  A particle with a charge of 4.0 mnli 0 ;8 nvlwdpg4k 4:0.tpvnxC 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 ;;hv;gtpc g0eplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on th;g0cp h v;tg;ee ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed i/s* 1nrmcrwb k2 ixv/yu9.gu.nside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dire x1ns/mkr2 bc.v9 .wy uiru/g*ction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. 7rtc+jwk f14f+g ( hkgWhat is the magnitude of the electric field 5.0 cm from the+krjhf74kgt +f (c gw1 sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is 56 z7cawv2fwh.* my.zeyk4vn the electric field 6.0 cm from the center of the syznw*5mavw2.ev. h4 z7kcyf6phere?