State the law of conseiv )d0xk0x1xm rvation of electric charge.

  Is it possible for two negative charges to attract each wnzsi,dzu-7 )474zea n ys;7jrvt1wh other?

  Is it possible for a positive and a negative charge 5+u6tg.dqa n mw5cok2 to attract each other?

  A glass rod is rubbed with a piece of silk. During y3fzn cm5:c mr;gg0)e64 zphpthe process the glass rod acquires a positive charge py35p6z4; mz)crcngg0mef: h and the silk

  A proton carries a

  The model of the atom sbv* /c 0p;cccqty* w2mh.vke *hows a

  A neutral atom always hapz cqj67c1w,b s

  An atom has more electrons than protons. The at4xyzy7s/- r.j;g *scv , jej tzrg2b5tom is

  Materials in which the electrons are bound very tightly to the nuclezev 1: rytxeb-j(y( t0i are referred e:etb t-1(ryxyv(z0j to as

  Materials in which the electrons are boun9d/v9xp (fpgm)xvaf; d very loosely to the nuclei and can move about freely within the material are referred m/(a)p;dx9f9vv xfgp to as

  A negatively charged rod is brought near one end of an ue11ng -l qgwp,ncharged metal bar. The end of the metal,q - egw1np1gl bar farthest from the charged rod will be charged

  Sphere A carries a net pe y :u 2nzt)k9tki7 l/lul 5qfi7h;rw-ositive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere Bhw)/nrll zt9uut:ii2;y-qlf7 7k5ek is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscoyv; 72nhnr2l)p lw1kmpe positively?

  An originally neutrazb 9wm0;fw2pvi o-q8l ldt,8 al electroscope is briefly touched with a positively charged glass rod. wbvi8o f9l a0m;8-q2 pdlw zt, The electroscope

  An originally neutral electroscope is grounded briefly while a pav(5nxi* r n8sositively charged glass rod is held near it. After the glass rod is removed, the electro n8rxa5v(*ins scope

  A positive object touches a neutral electroscope, and the leaves separate.v2lt1,kn6(,zu( ua4 aklspis Then a negative object is brought near the electroscope, but does not touch it. What happens to tkuk2( atz6,ui1( lsp4n vs a,lhe leaves?

  A large negatively charged object is placed on an insulated table. A neut6)f : jh9 scgel8i6jiqral 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 t) gi i8s:fh6lj 9ejqc6ouch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb co.26gi g;(qr yge8sg qonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The f3 9awau.p(gfy irst charge is larger in magnitude than the pg3aaw uy9.(f second charge.

  Sphere A carries a net charge and sqp;mx,z+3 d2cw ninrwpy* .;pphere B is neutral. They are placed near each other on an insulated table. Which statement best denrwpc yw;p;m* pxqi+,.z 23d nscribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the;r4iys7+xcn-gpna q,etf5:a charges on both objects are dou+atxc seqgr,7;a nn4fpiy:5 - bled with no change in separation, the force between them

  Two charges are separated by a distance d+i lb +w,95+vx8y xwstkpy9oo and exert mutual attractive forces of F on each other. Ioixt ob++ y95w9 wkx y8+ls,pvf 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 t8nje*hfok us44 j ;ek4he force between them if one charge is double44 4j;ne*u hjf8kok sed, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated r /isvp164-x: mq enwej7fiv,by a distance of 1.0 m. What happens to the magnitude of the force on thv e1 rpej7ns /-x:v6m,fq4iiwe proton if a second electron is placed next to the first electron?

  An electron and a proton are stqrtt,w5ehralw-))* x37w p ni tzj a3e)m)i(eparated by a distance of 1.0 m. What happens to the magnitude of the fo3nat,wilzt 3) (q57eta)x-tre)w mpr *)iwj hrce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.07rusly 5yoq7:w/ z 7h p4l,nem m. What happens to the size of the force on the proton if the electro 7 l5wzpm/y qe,4y7losur 7nh:n is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When i x uzf9*qmj, yp417;kbijms; a second point chaf;iymjk; 4bzsx1ju 7*iqp, m9rge 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 at the center of the square?

  A point charge of +Q is 6)pay 7c8xza+v fx8dg placed 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 i68ac x)xg av8py+z7d ft. 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 vector?+t05- f l4du q7asgziy

  At twice the distance from a point charge, the strength of the electric ,0( p6)- awnpt2ahoz uclywc9field

  Is it possible to have a zero electric field value between a negative anmbnz z eshx,2yccqxa-)1 137ud positive charge along the line joining the tw1 )u7zh- ,ceb z2cs 13xynamxqo charges?

  Is it possible to have a zero electric xu y rx7d7udxll;.tb d,201hg field value between two positive charges alongxbt1., xux7 r ud2dllyh;7d 0g the line joining the two charges?

  Electric field lines near psitive point chariqag:e2lsx 9ct .iq71p **nsyges

  The electric field shojg. eqqa5 b 1flu;/r6iwn

  Can electric field lines intersect in free spac: 2b/clymn :/nuq z-c :g7u2bdzg.iu ae?

  A solid block of metal in electrostatic equilibrium is plp(; iji6 ni yj7nld8j;aced in a uniform electric field. Give a statement concerning the electric field in tnip ji7dj;8j; 6yln( ihe block's interior.

  If a solid metal sphere and a hollow metal sphere of equal1-- hm0h zibf :3ujgoj diameters are each given the same charge, the elecmf0zjuji h 1hbg-o 3-:tric field (E) midway between the center and the surface is

  A cubic block of aluminum (uic u*afun:8rests on a wooden table in a region where a uniform electric field is directed(au:c nfiuu8 * straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an kb p2aqn6k0pn ,z)3pyelectric charge

  A positive point charge is enclosed iz7qn1ji 3tlo 9n a hollow metallic sphere that is grounded. As compared7l3 1iqtnj9 zo to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors i0; c tt4vp:jd*b7v :k mqxvjd)- jxr/an static equilibrium.

State Gauss's law.

  The charge carried by one electrolae;8fx4 f6 egn 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 +2.00t,oeyjkb; t77v vl+l 0 mC. How many more protons than electrons does this piecet0 bj vl7;l ,+evk7yot of plastic have?

  What is the charge on 1 k8r xi h.+ei)7i)c,/av ;gmv2r srm spbg of protons?

  An atomic nucleus has a charge ofiale;fi 9hq luj)4w3dpl *i. / $+40e$. 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 ojy mrig-b gr5g2lb2(vez ( w7*f 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw-e (5* zb7rgw grbgvy(ilj22meen them?

  A 1.0-C charge is 15 m from aqsz4vyned 6 b/8kz5j 7 second charge, and the force between them is 1.0 N. What is the magnitude of the second chargeq8yz6/ jkzs 45 vedb7n?

  Two 1.0-C charges have a,e+iwwe4qr7 buml0 2 c force between them of 1.0 N. How far apart are they?

  The force between a +ntu lgg(o8ti t sz nza6w.2*dwc 7,x/$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a;7:oca jp42c(l.z gyx ulpy g3part, experience a 1.0-N force. If they arg.:;po237jzlc 4axg u l(ycyp e moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plai g(l0p jr;u9d9 xha:mced on the x-axis. The first charge is at the ora9l:gi udr hm x(9;p0jigin, 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 origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mpcnm*(q4xq-z C 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 whiccqz4 mpnq-* x(h acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = ht;m 6wg7lii9 1.00 m; Q2 = 3.00 mC at 9g; ihmtil6w7x = 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 r/jiw85q ls-ck1m)ln2u, ukc 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 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 placedk2 c c5i1-r/w knmqulsl,8 u)j at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 n/j(/ujl: mr n p4hkd9uC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the 4hm r(k:ndulj9/ /pjunet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 dbl t;h o2wp( qyi4.x)nC is at (0, 0). What is the direction of the net force on the 5.0p.2h);txbw4old (yq i nC charge?

  Three identical charges of 3.0 mC are place/ mkk(j4v-2vbzpf j 8gd at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts b/kk (vzfg 2jj4pv8-mon any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Atmxswas91/6w (5qjm ut ;; fpmx what point, on a line between the two charges, would it be possible tu 1wwm5x96m;sx qa(f p ;/mstjo 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 and a +9.0-C chz*fedu:jw0(qivn y-5l xk, t lx80j( warge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zer:vdq yet0lwn(8 jwi*z xx- ufk5(, 0jlo?

  Charge +2q is placed at the origi/:,d2tut du pxmv3-d,9hsyf wn and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on m 2s-p,uyd: w3x9u, /tfvt dhdit is zero?

  A copper penny has a mass of 3 yk5r g0nd/ w/x0z6lhrqe+n 1z.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 attractizjlkcp.fbs;h,y *9mt.w 0;k don of a fixed proton some di fsp*;k9yk 0 ljbwhcmt;zd,. .stance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threy/y x b;y79lnmcok7p ;ads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thlnc7xo;k; py/by79my reads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge omifiuendy/un 4x 0 x87u2*p* nf +40e. What is the magnitude of the electric fie0m2 *pynn7 4x * x8udiinfeu/uld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5 - wuxpvnit8/801b ( ndzrhq8y0 m from a 50.0-n - 8din(/w8 prhu zv1xqyt8bn0C charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mao 9.yp*idm6wjgnitude of the electric field a9 *wip6.j modyt the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What hvy(kl(i7nux;/ 3rrg is the direction of the elec(7u/ ;i glxvrrhn( ky3tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of ty/3qka)s n nm3he force experienced by a 1.0 nC charge placed at the location of the test charg 3asnq knm3)/ye?

  Two point charges each have a value of 3.0 C and are sepaeji0 huy. :/1z .w.md 8xxqzvdrated by a distance of 4.0 m. What is the electric field at a point midwz ude:my8. 1vzxxd wqi .h/j0.ay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mr5p/t 0ny)vlk eter stick and a -4.0 mC charge is placed at the 50 cm mark k)rvlpy 5tn/0. 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 ch 4spbpzb6gjbnl 9 a5 8lqh.,-karge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fiel h bg bbaj698 s5qznll-4p.pk,d zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0. .jyk2y5lw0 p 5sfkv( 7uzwfx220 m. What is the magnitude of the electric field at the point midway between them? 2z5x v0l7jk2f5fwpkwy s(yu.

  Three 3.0 mC charges are at thwid2l(s r; b4spaf/c ;e three corners 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 center of falwscp;(disr 24/;bthe square.

  Consider a square which is 1.0 m on a side. Charhak.+jjz2x s* ges are placed at the corners of the square as follo j+s.ka*xhjz 2ws: +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 on a charge of b epzmkhu*y; mxd,+:3.)rxda q zny755.0 mC when it is placed in a uniform electric field. What imx.zn du kpb53 dar7:+)mzey;y hx* q,s the magnitude of this electric field?

  A particle with a chp2 hx9vhpg)l 7arge of 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:r049,o6okmv g mcas i.120 g is placed in an electric field of 6000 N/C pointing downward. Wham4i a9 g:vm6oo0,ckrst charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pl8 /t;s,/dd5: salewmv ) ulbcwkge+p0aced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of wsc+0 pg:ael tvm ke)d/bw,sud8;5l /the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. u5 ,n :km 3e8zcmsxzk5 What is the magnitude of the electric field 5.0 cm fx5su,8mmkzez3:c k5 n rom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. aifb3o0 rzas*zn0h2bo4pd 9 1 What is the electric field 6.0 cm from t39ho bzobripd*as1fa00 2nz 4he center of the sphere?