State the law of conservation of electric8z03xh:5(u 0p e t pav+s 0s8sjytetrgxisz7; charge.

  Is it possible for two negative charges to attract ea4r4dvjqva 8, och other?

  Is it possible for a positive an6d b:4nuq9 v ybc( j8wfc,niu;d a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. 8)dp hq/ ijf42bdvz.g During the process the glass rod acquires a positive charge and th d h.8jv 4f2i)pbgq/dze silk

  A proton carries a

  The model of the atom shows(ed i;yol54wt a

  A neutral atom always5ao ire:2;0mtq,z rl3gia:c t has

  An atom has more electrons than r2x1krhi2 knzf p:m3 /protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are ; kokq v-enj.,referre;-qn.ke, o vjkd to as

  Materials in which the electrons are bound very loosely to the nuclei and6x*h9czop2 )a)obbqb 3 f a;z)xao 8fs can move about freely within the material b h) ap9f ;2)aso 8xx)oc6zqb*fob3azare referred to as

  A negatively charged rod is broug0capgt,mn/j9mc4t9 k4 ,2 gbsd ca9nght near one end of an uncharged metal bar. The end of the mcpajc4n/ d 0,9gm2bg,c sakmgn49t 9 tetal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They aaw ;,set d xu7hxm)9c(y/u w+bre placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correeuc+ bx ;,h txwmds(a9wyu) 7/ct?

  How can a negatively charg2, d-yrqb j)c)1 xo;rmzmvv j9ed rod charge an electroscope positively?

  An originally neutral efes;(7u:r ; syp-dmi hlectroscope is briefly touched with a positively charged glass rod. The el:myss7fiu-;d;eh( prectroscope

  An originally neutral electroscope is grounded briefly6ot*fs w/ lbh, while a positively charged glass rod*/tf ,s6b lwho is held near it. After the glass rod is removed, the electroscope

  A positive object toyza nhm3vbp4(;eylcnhb k2r1 3jw ;01 uches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the le c;ehhy ybvn4abwjn(zr1 10;3 23lkpm aves?

  A large negatively charged object is placed on an ha4+v7 w0n oo5q*wueminsulated 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 ball rolls forward, but does not touch the negative object. At no time does either ball touchaq om40 *+75neowwuhv the negative object. What is the final charge on each ball?

  Charge is

  What are the units of themfu)0gty4kmw(5 yq ll/9r,ia Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated bzv sq1j .d0pja8 0h:ph3puy /cy a distance d. The first charge is larger in magnitude tpu j ps1vj./3cp q ahzy:080dhhan the second charge.

  Sphere A carries a net charge and sph79h f*7ooulpm8 l r;xhere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between the xol;r7l9u8h pfmo *h7m?

  Two charged objects at 0*k p/nle-zmb b0u2j ze2 8z1*iygsjagii8.mtract each other with a certain force. If the charges on both objects are doubled with no change in sepa2*sniua 2 i kzl*gm80jz8gp yi -/z1m.j0ebberation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces nz29xujfy016kqbs 8 h rr1k9nof F on each other. If the charges are separated by a distance of d/3, what are thkr091hn usx2zb y9fk 6r jn8q1e new mutual forces?

  Two charged objects attract each other with a force F. What happen1m-kbsfo akrpc aas1c:: -33v s to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original ps:c1 k3b-amcvrfa a-:s 1o3kvalue? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. p80y roux7 lkepv+v02 What happens to the magnitude of the force on the proton if a second electron is placed np p2exy08o0u+rkvl 7vext to the first electron?

  An electron and a proton are separated by a dj(2j6p ci wxls 7+tg)listance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to wjjcg2)t(i7 +sx pll6 the proton?

  An electron and a proton are sepx(0/ih /m6xunw er26*ou;hb uy q4gzuarated by a distance of 1.0 m. What happens to the size of the force on the proton if tx/e64u2uq6(; b 0uu /oynwghh*rimzxhe 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 sec-x i0,vyi/ a;ixnzno) ond point charge of -Q is placed at one of the square's corners, it inz, voii)nx 0y -x;ai/s 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 plq bc.95dmr ts6aced at the 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 cq.bmdt96rs5 at one of the other vertices?

  Which of the following is nd/rv- fe8 mox:ot a vector?

  At twice the distance from a point chr colun 5en;99arge, the strength of the electric field

  Is it possible to have a zero electric field value bet ymrga4nybc l 9h)x8lrmg0,f c0w+b66ween a negative and positive charge along the lin9g c)8xcw+,ll 6rm0bgnfa4r6y0 bhmye joining the two charges?

  Is it possible to have a zero electric field value between two posiqn 3etay 5,pp,tive charges along the lit35a pen,y ,pqne joining the two charges?

  Electric field lines near psitivi/+ lp sajz6)j;krn a gy4+8ype point charges

  The electric field shof+hw -f f7ft1-cf vp2dwn

  Can electric field lines interse9ed q:e5x;etqf5l;w7d oy w1kct in free space?

  A solid block of metal in electrostatf8,a4 p 7ixhckic equilibrium is placed in a uniform electric field. Give a statement concerning the electric k4,f87 axpchi field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal d xisybz4jcv x0 7i66(diameters are each given the sam z sib 7vx6jxc4diy(60e charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodm:7ocf:,g k h/k ;rvbuen table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sur:;cm,uokg :b /f 7krhvface?

  If a conductor is in el z9ha 1pwxfn:9q3 l5b y,vd,tqectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gru4dg:rcu ;q/gounded. As compared to 4gg ;cdr/uu :qthe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibri 9*b r( u5jz9:o2b yawcl5zvprum.

State Gauss's law.

  The charge carried by one vmh* qp o rwva er0w61hus;478//nap oelectron 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 e e0t semd6qx./p.eeu2pb4a,+2.00 mC. How many more protons than electrons does this piece of plastim.t. 6pxe, 0eeepube4 sa/q2dc have?

  What is the charge on 1 fae/i1em((fv nb );sg)z*u ymkg of protons?

  An atomic nucleus has a charm/9s/d jf1z w1g1jm7noyxn + vge 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 mCn/,qf* ss3n 0 9cwrnay, respectively. What is the magnitude of the elects9ca s3nq*0rny ,/nfwric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweenk/0hi;3 h(z 0ngs-xa vj riky: them is 1.0 N. What is the magnitude jsk k z-vnh;0yirx: (h0 i3ga/of the second charge?

  Two 1.0-C charges have a force between them oft8 ,vffnfh99en )mow,e h *m;f 1.0 N. How far apart are they?

  The force between a 8 -bdusm)gzk1x7z6ju d aq4(c$30 \; mC$ 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 .q 4xwo, v4r.fv*euubsj( fqx: fd3b5 they are moved to a new separation of 8.0 cm, what is the electric force.( x:* e4 qf3jovubrdb q,xsf4.wufv5 between them?

  Three identical point chbf+nlt l2 -yr.arges 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, an-nb+t2f.yr lld 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 j +xqwr;(ypg3scu-k5 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 dw3 5q-(rgcx+;sujp kyirection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the foad ns, 0z1lc/ iv3k4n/eeq0a vllowing positions: Q1 = 2.00 mC at x = 1.i0n 4v1kdaal /3qv,nec s/ez0 00 m; Q2 = 3.00 mC at x = 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 cef2vbeak*.c0dy7i wfs ouy0 -:- rb*ygnter 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 the force that acts on the center chadgk v*fr0ew2.ua0iyb*c:yo byfs 7- -rge 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;f034uc ull vu nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude ;lu luf4c30uvof the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0. 5 bfrc 9(*(ardmhm9d.mbgn;f 30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is cmnfm9.(d rh *r bf9(am;gbd5 the direction of the net force on the 5.0 nC charge?

  Three identical charges*yied:fv:r ju)c *0n c of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the uvndic:jr**)e0c y: f charges?

  Consider point charges of +Q and +4Q sc e)dd gjx/)97i2imv, which are separated by 3.0 m. At what point, on a line between the two charges, )/ijd7m ecxisv9g 2d) 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 vug/kxx8 4 h eq385phaand a +9.0-C charge is at x = 4.0 m. Where on tu3h4x ex8 haqg 5/8pkvhe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q ;g 5g5nkk /bupis placed at x = 2a. Where can a third positive charge +q be placed so that the forbu5;gp kk5n /gce on it is zero?

  A copper penny has a mass of 3.0 g. lq1 e9;/. w/xci3 s e+1vtiqhpikr/jt 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 p5)x c p-7cmllrig71y4 r3qifn52 gzo the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protongc 1ioq2nr z7 5pll7p3ic-mx)yg45fr?

  Two 0.20-g metal spheres are h s0hrt22w*kpa ung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion for krh2wtps a02*ces 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 +40f6 wad9, z9 d3 cvc+yqwpdn0kx 3jj:n0e. What is the magnitude of the electric field at a distance of 1.0 m from ,9cd:z6cy 0 jj0af w +wqnd933dpknvx the nucleus?

  What are the magnitude and direction of the electric field at a dqzc57ahwtz 48istance of 1.50 m f z84za7 qhwt5crom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magy0yon 1b .r 9aoqp-c/nnitude of the electric field at the location of the test ch10/ nrbop.9 yyc no-qaarge?

  A 5.0-C charge is 10 m from a small test charge. Wfgtx2i in i,*7hat is the direction of the electric fie2giifn ti*7 x,ld?

  A 5.0-C charge is 10 m from a smallh, oxbsef: -i rvo1/2z test charge. What is the magnitude of the force experienced by a 1.0 nC charge pla-o hbe /or2 sfvz,x:1iced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated bv( 6a+ euq2dl7ax9hyb y a distance of 4.0 m. What is the electric field at a pqv7ax (l9+ay6buh d e2oint midway between the two charges?

  A 5.0-mC charge is placed asw+vcvo-ki9sg.n-k 3m4 j+kf t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at v wvm-cf-9ki sok+ .j3+s4gnk the 50 cm mark. 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 pba8 (mx .4yul-4.0 mC charge is placed at the 50 cm mark. .malb8 yupx4 (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 t y0ei6+dbg*6 gda c vvkr5f56x = 0 and x = 0.20 m. What is the 0 cvd*6 ea+6 k65ib5tgryvfdg magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thya(pjdq3bmvyo a :w17f*lw 43e last corner is occupied by a -3.0 mC charge. Find the electrm*31ql( fdwb73v:y oywp 4aaj ic field at the center of the square.

  Consider a square which is 1.0 m on a side. Chark173ulptgc.9y(7x1qchuv c* k/ile 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 (7 vehl 3.uclq kt1xgc1ciy u /k9*7prthe electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform electrvoz 04--lowd*i ggy9t;ls .z1d yf r-hic field. What is the magnitude of this electrg ro-td4-y.-zs0y9ilfd ;vwo glz1h*ic field?

  A particle with a charge of 4.0 mCektac2n1 ;bs 0 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 electrrgo6r bu*auu *d 1z5i6os w/0dic field of 6000 N/C pointing downward. What charge must be placed on th *rwd 60*z1guds aibr /u5uoo6e ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0ls vdc*b l82c*0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are sc*d *cl2bl8 vthe magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnihl0 x qz/kc;m)tude of the electrichzq;/x ) clmk0 field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charps 1anv-r1 rt5ge of 3.0 mC. What is the electric field 6.0 cm from the center of th r-1trpa n5s1ve sphere?