State the law of conservation of electrbq e z 1,/afv ;y+sda.sjnh75cu +ob8yic charge.

  Is it possible for two negative charges to attraca3z:4oe /1 gglzsnyv6t each other?

  Is it possible for a positive and a negatyfn0sfc8t/ pw, v+a*g+qvb: live charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durimdtxz1 zxy:j4e/w is:rkn j j)v o*8g-ezm-52ng the process the glass rod acquires a positive charge andjjj/4e2x n )kermw:-5g :*18 -t mxzsizyodvz the silk

  A proton carries a

  The model of the atom shows hb(ad in8l e 5zeed3neg29:l -a

  A neutral atom always has0i n3en4w a7g u rrva.14o8edl

  An atom has more electrons than protoss3umu(q31/gxdv lwnx -ut l , uo.9n.ns. The atom is

  Materials in which the electrons are bound very tightly to the noygyb t10htg mr5:9r 2uclei are referred to ay1 y90g rgt2rt:moh5b s

  Materials in which the electrons are bound very loosely to the nuclei and can8h l4lksx ts*e13o q,n move about freely within the matee,3klsq sol nxt148h *rial are referred to as

  A negatively charged rod is brom)pj47e* ng z58(s;ja vvm jghught near one end of an uncharged metal bar. The end8gzm4hg pejj5 s(7a);*njv mv of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They x7zih+-ety p 8are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. p xt+7h-eyz8i Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel kbv mjz() ae(1: f*zlwrz8y8ly?

  An originally neutral electroscope is lhuk)ag1je4 (briefly touched with a positively charged glass rod. The jhae1 )l u(4kgelectroscope

  An originally neutral electroscope is grounded briefly while a lki1bc:bz crj2mt0a -ukz*(1positively charged glasmjkbr a12( t:uk*1b0izlz c -cs rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and ths*m0*d 2qohl le leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happe h2l sdlq*o0m*ns to the leaves?

  A large negatively charged objehsmab vh3bs,)k*k:r6 ct is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neu,s* mhkvsk h )rb6a3b:tral 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 Coulo3njpq du1s8h 7qtnc* .( 6douvmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distd 1-f ,gk.fiedance d. The first charge is larger in magnitude than the if1fddg,e .-k second charge.

  Sphere A carries a net charge and sphere B is neutral. The (qz ke p3uf kf1vsv((1*ihcv(y are placed near each other on an insulated table. 11 hvie uqvz (sc3kv(f*pk((fWhich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forq;3 8lsfd6m y q c834os:8(asax vvf+sldz1qk ce. If the charges on both objects are doubled with no change in skcy(4 6v;dm3s1a:o8 xzq8 s qvl3fl+df s8qa separation, the force between them

  Two charges are separated by a distance d and exert mutual attractinp se83l-wa+ila(/ m1mw(c qave forces of F on each other. If the charges are separated by a distance of ncm-ea w(wmq (+psla3 l1i a/8d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. W o fmuwd4dj zh5lx79/)hat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to7/54xwmfudjd)z l oh9 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. What happensx,dtq1u.)mh6ih7x 3 *ayjo y-p 7nbij to the magnitude of the fodmx,ia7huhp6qin 7jt3yx -yj*)ob 1.rce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens .e9 owqu,b1s sto the magnitude of the force on the first electron if a second electron is placed next to the protoneo ,9 ss1bqw.u?

  An electron and a proton are separated by a distance of 1.0 m. What happ(7*8w9 cu p(p odagav;bcyxi 2ens to the size of the fu(i2*a97x yd po8gc(c ;vwbp aorce on 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 second poi(z 8w 8a9urk) iikq8vunt 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 posi z8i kwk8vu8(aqi)r9u tive charge at the center of the square?

  A point charge of +Q is placed at the centroid60k*qz)jmfm3d, kg1zcu;h a 8iyb a 3z 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 charge0u m13d6 f8zayjaz kz *3)kih;,qmg cb due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectoz 0y)(pkp1 ocor?

  At twice the distance from a point charge, the strength of the e: 3mh 25radgm; /e jr*a,ogeinlectric field

  Is it possible to have a zero electric field value between ag.f npj2hq t399 +wtmcqec i+6flv)5n negative and positive charge alongc5t3 + g.tm6fi 2hcnvqwjqep)fln99+ the line joining the two charges?

  Is it possible to have a zero electo bpf8ho ;r3d;ric field value between two positive charges al rb38f;;odhpoong the line joining the two charges?

  Electric field lines near psitivexr*jb7vxnafho1zj,0omfsh :k xv .7jz; *p*. point charges

  The electric field sh k6pc-,ivrdy 4own

  Can electric field lines whi aoh6,u8b* ;yiitt6*4 mai intersect in free space?

  A solid block of metal in electrostatic equilibrium idlyg2g6 dzqvsxrmp9qh;( 6:; + u vk*qs placed in a uniform electric field. Give a statement concerning the elg *p;q6d: vqh rvdlskx(6z+y; m2qgu9 ectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ea(,6tplpr ob wr3rb/9 iajv5o;ch given the same charge, the electric field (E) midway between the centerv;r, oj6(bobppw3/lta rr 5 i9 and the surface is

  A cubic block of aluminum rests on a woodigzs eu x.ey6oe,)f0* en table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's tosf yeue xz g,.)*i6o0ep surface?

  If a conductor is in electrostatic equilibrium l61j qj p6tl-tb8+rzenear an electric charge

  A positive point charge is enclosed in ,m,qa s1ixp5ea hollow metallic sphere that is grounded. 15amie qp,s, xAs compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of/ux o:. w nt.(.fjmlwu conductors in static equilibrium.

State Gauss's law.

  The charge carried by one el+11ssrqd1iju ,v kvp: ectron 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 pqi3ugv.f1q o f) k ae:)cikd4t9r+z i)rotons than electrons does this piece of plastic)+ gk i4r acqze1:)qtdo)fkiu if39.v have?

  What is the charge on 1 kg 0 ,nrrz,m 1gu4k-kdq: goi+elof protons?

  An atomic nucleus has a char3 wbpebfq w. p,0m/c:rge 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 and -4.0 mCt7 b8igi q;9ng, respectively. What is the magnitude of the electric force betweei 7i qgbg8t9;nn them?

  A 1.0-C charge is 15 m fromfm4 ns8nr0t;pc- u(nx a second charge, and the force between them is 1.0 N. What is the magnitude of theucfptn m4r -;8sn(0xn second charge?

  Two 1.0-C charges have a force between them of 6* thycpavw.av -36um1.0 N. How far apart are they?

  The force between a fejn50 vu6s gx*g ) eg1g 6yp)dpla.8b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, 13dw zmw6a nm2f w5;vyexperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force;w2y5wmvmnaz 6wfd 13 between them?

  Three identical point chargy(shh u8)jlt8 es 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, 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 origil ut88h()jys hn?

  Three point charges are placed on the x-axis. A charge of +2.0 m1pbmhe6bpn , ; 2;* eyv-yffsmC is placed at the ebvf,fms2h pbn yye61 ; pm;-*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 origin?

  Three point charges are located at the following positions: Q1 =nn3 n8txg45x 9g8k bbs 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 mb9k4ggsnx xb8n t5n83agnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squa*h:*s2 xnox41j i x)2u rwf4jer(tkaare, and a second point charge of -Q is placed at the upper-left corner. It is observed that as aw) j2jtou e2fihxn*1ar44 k:(xxr*n 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 kq7zkqqhl0-2 ,7t gnv= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the z0,t 2v7kh klqnqgq 7-net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0;0)ei9f ggg :vjcxcq10zni m/ nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the n0jc g)xg f1 /mzqiv ie09;gc:net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertin0r 365g z r b7p87muwf4hyminces of an equilateral triangle which measures 30 cm on a side. What ubmg ny60mfip4rz wn8 r 5h773is 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 mski ln0xco(px v3(0m 9. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic 0x90p vk mco(i3 n(xlsforce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at xqvldeq*(*2 ia = 4.0 m. Where on the x-axis can a thi d(ieql* qva2*rd charge be placed so the net force on it is zero?

  Charge +2q is placedv b:kh,bvy2hh)f9yk 3 at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placedyhh vy:3h)k, bkf9v2 b so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota 4qf3cry4 ighltl9j .,l 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 /fw+hjz*es 2a/1h o lmagainst the force of gravity by the attraction of a fixed proton some distaozjs fw/+m/* e 21ahhlnce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres my s n1;o3pz6uare hung from a common point by nonconducting threads which ar31u;mp o6yszne 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. What is the magnitude of the electri 3w- h/4og9lvk 5wifuq*jrmqfsf5c2, c field at a distance of/55o ,fw*fqsrjvw-fh9gkq 3cim u 24l 1.0 m from the nucleus?

  What are the magnitude and direction s3 vky 3;-tpa;5yhpshof the electric field at a distance of 1.50 m from a 50.0k s3avp pys t3hy;h-5;-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude vtjjp- v;n4bedv3 25g of the electric field at the location of the test charge? 4tn;3e jvvbvjd2 -g5p

  A 5.0-C charge is 10 m from a small test c)lp*z 8( aodge5)wyxc harge. What is the direction of the electric(pl8y cex5 wog)*)z da field?

  A 5.0-C charge is 10 m from a smallt2i +1mbba 0km test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the m +1kib02atm blocation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distalbdus 5: 5t2xqnce of 4.0 m. What is the electric field audx2l5bt5 sq :t a point midway between the two charges?

  A 5.0-mC charge is placed atbmvz(q6+g +cs8zr4g g65pvmlc f w m3+ the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mar6 gc3fg5gv v++pcs lmbwr+m4m qz z6(8k. 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 m0c9xsi9fs , fmC charge is placed at the 50 cm mark. At whatx s 0ifs9,m9cf point on a line joining the two charges is the electric field zero?

  Two point charges of +3 q/gg ,u0tb d-c+r9.b6qvvzxx.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fid/rv0q 9 -+ gx6zb .qg,xvbcuteld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a ss7u(jj 1 eu:zpquare of side 0.50 m. The last corp1euju 7(zj: sner 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 side1 bj jal1-4 mz7a5aydgg/ipy-. Charges are placed at the corners of the square as aa 4- dg5yim1z7/g1pybj-j al 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's center?

  A force of 10 N acts onurve; n:sfw2 -hh;9 ox a charge of 5.0 mC when it is placed in a uniform electric field. What is the magni:n;s -9rv e;h wh2fxoutude of this electric field?

  A particle with a charge of 4.0 mCndm wk/5q;*+jlawq4f+9b wy y 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+j80n5p1xc ( ujdua 0rmwrz4p an electric field of 6000 N/C pointing downward. What charge must be placed on tw4 +j0mu (rraxc8d5njz1p0u phe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plap)bekfx6 8mc4l j :ov0ced inside a uniform electric fe8pjc 0v4b6 o): lkmfxield, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a +* zfkl;./o wda saaw)7q; owucharge of +2.0 mC. What is the magnitude of the electric field 5aqwa+k ;z.o*s7/) a f wwold;u.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 davqh2a 6yfer6k1h ;ww ,li :(mC. What is the electric field 6.0 cm from the center of the :62w q ,ed(yflia1;k6w vahhrsphere?