State the law of conservat ;myf wjb;vjd1b s)8o/ion of electric charge.

  Is it possible for two nega wbz5c4kf:t8cmr bw.4tive charges to attract each other?

  Is it possible for a positive and a negative charge to t(/ 4-m yvo l mvl.t7vf;l*hyounl m::attract each other?

  A glass rod is rubbed with a piece of silk. During the proc jeq.6jhe 1tk.ess the glass rod acq q6.j.ekht1jeuires a positive charge and the silk

  A proton carries a

  The model of the atom sho cx;( hb oq0r7hjr.v3bws a

  A neutral atom alwaysyzy weph qv5 ne*st- j91y::*x has

  An atom has more electrons than protons. The atom isxq,9xgf. lu2 b

  Materials in which the electrons are bound very tightlyh0 g* xhy av62j; ghb6:wmv4ac to the nuclei are referred tmw2 a b:04;*g6 hc6h ajyxvvgho as

  Materials in which thn:m6fc5 w/npp e electrons are bound very loosely to the nuclei and can move about freely within the material are referred tonm6c f:wpn5/p as

  A negatively charged rod is brought near one end o z7 t0-u-omwjwrv( /t gwdwi:;f an uncharged metal bar. The end of the metal bar farthest from the charged rod will b-0vwm- di 7 zw/:uwt(o;tjwrge charged

  Sphere A carries a net positive charge, and sphere *: e t v1o9g0 ngcw3km.csx;qvB is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thvxc ;owt9:03 g*kesvqc nm.1g at is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosczissa)r- */cn ope positively?

  An originally neutral electroscope is briefly touched with a positpkwd f ) skh8n1 949hdsx:j5sjively charged glass h)swjhj84xfdk p n:1ds95k9 srod. The electroscope

  An originally neutral electroscope is grounded briefly whilgi)xpy:px8h.q q*y f 7e a positively charged glass rod is held near it. Aft pq* q.xpyixg8f):hy7 er the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, i3*+ +tz*f qtnwaq c.dand the leaves separate. Then a negative object is brought near the electroscope, but does not toudc+anq3.zqftt* i*+wch it. What happens to the leaves?

  A large negatively charged objec:hf9qsl7 jpdbvb3)ttlj ;*/ jt is placed on an insulated 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 7b p tj /f bdjv9)*q:3;jhltsltime does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cx7xh yi4w4/)y tssv/ honstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is laumh)(pe dx8kas) * b:xrger ipux(dh )ekx*)mas b:8n magnitude than the second charge.

  Sphere A carries a net charge and spherc tbk -;gjkr;;e B is neutral. They are placed near each other on an i;ktbjgc -r;;knsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otherdw/dn 7 a1ne/s*y dkz77c9nq 4j: gdub with a certain force. If the charges on both objects are doubled with no changa 77yqz c9:47dddgn/wbn*d1j sk nue/e in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of xupw*pah.1+p7bl gh ds* *2kcF on each other. If the charge k2 pc wxp* u+p*g7*hl.abhsd1s are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F.9+0sv lfmr(6uvi6cafy - .z cq What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between thei6 f6qa fiyc09+c-rv zu(sl.vmr centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m2hj4jim9k;m5mf zx:5 /yfwakj +7ya y . What happens to the magnitude of the force on the proton if a second e 9maf+j4k7hm wj;ymi:jaxfy2 z k55/y lectron is placed next to the first electron?

  An electron and a proton are separated bnu ajklo/ bhndptmht-c47 4-q3 -eg4 1y a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a sel3g1m n p- 74/ bn4-d4qjuteh-tkcoh acond electron is placed next to the proton?

  An electron and a protonflv34 l3nme. d are separated by a distance 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 th.vl nfl43de3m e proton?

  A point charge of +Q t 1btpkr0k) n 0vb*1qvis placed at the center of a square. When 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 sv*bt1v0q0)k pnb r tk1quare'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 +Qg cv2nb +v fm1zoq-k+8 is 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 it. What isfgov-vqc m 2+ znk18b+ 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 9snr3.(1 oor)ih :0jekfncofvector?

  At twice the distance from a point charge, the strength of the electric fiel vzd.sk;/ )vmk,tgm*q d

  Is it possible to have a zero electric field value between a negat+mp yp )qxry),x 9r7ymive and positive charge along th yqxyrm 7+)m9y)pp,xre line joining the two charges?

  Is it possible to have a zero electric field value r,dxyvbxe(cvrfm+1trt4+ + * between two positive charges along the line joining the two ( r 1fv+ ,vb*em+txdyc+r4trx charges?

  Electric field lines near psi; rj ,z;ed8duntive point charges

  The electric field shown -jmve6.p : pqc low1.x

  Can electric field lines interselvvos.7o6t(wi72rlc v top34 ct in free space?

  A solid block of metal in electrostatic equilibrium is placed in ayq) b65 of /6vp;olj+(jth gnq uniform electric field. Give a /fqj6o5p by; g t)ljh(ovq+6n statement concerning the electric field in the block's interior.

  If a solid metal sphere and a holf h2c:smf gk,xym*v.4 low metal sphere of equal diameters are each given the same charge, the electrmfs,mc: k2xg*v4.fhy ic field (E) midway between the center and the surface is

  A cubic block of aluminum reql,a;u/d ;is8ll* arjsts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge,uq/a*ia;8dllj;r sl on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ch 9cr)1ocjuo o-h+bs1large

  A positive point charge is ehu p9:cy,y7sc(ods +h nclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a pois( 7u9ysh:yho+cpcd, nt directly above the hollow sphere has

State three properties of conductors d7t 8/w ,x;wbd1amdznmk:w-win static equilibrium.

State Gauss's law.

  The charge carried b /ivdiw 1ih (a):7gdtry 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 has a net charge of +2.00 mC. How man5bi8ejd)y 9 s(p.fet. tp1b qqy more protons than electrons does this p8tjei.d9 5fp.eybp t qbqs) (1iece of plastic have?

  What is the charge on 1 kg oft ,pof (fq4ko7 protons?

  An atomic nucleus has a charge of rj.n0(fbeln7g k6 1kz$+40e$. 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 2.0r ns *skedl 27hgx *p:0w;7bpc and -4.0 mC, respectively. What is the magnitude of the dsps 0cgb ;h px* e*nr72:klw7electric force between them?

  A 1.0-C charge is 15 m from a second chargeulz iol009bf +q/fr 3c.vvho:, and the force between them is 1.0 N. What+:/cu 9l3ovfil o bzvh f0q0r. is the magnitude of the second charge?

  Two 1.0-C charges havix za3, zu6v3u 2hf)eze a force between them of 1.0 N. How far apart are they?

  The force between a moq t pk)r csp6loepv -br -:6t-u/m09$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiall;e9ue8 t)jpb a0:v:4jaihm :icdd9uxy 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between a4bmpjdvuj :eac90 98h: ie xut;)i:dthem?

  Three identical pointf 19wtj)iaubp/7z ueq9bwu t57(m (wv charges of 2.0 mC are placed on the x-axis. The first charge is at the origin,a5ft9 vpw(mtbw1i7uuq 9 (bwz7uj)e/ 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 )k.a8k1wiu8 59 fr;e db folhwthe x-axis. A 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 electrosta bra)85f w.ek dwul8k;ho9f 1itic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00esg ji5+n v3x9 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 fov9xnsig53j+ e rce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squaravx2 u(od :rh6e, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrrv( ahux6 2d:oostatic 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 m); Q3 = 5.0 nC is o7 vtn6. (gqh-idn1vp at (0, 0). What is the magnitude of the net force on the 5.0 nC chaqv p-(v7h nd61o.i ngtrge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); 3ecjl)n6u3m:si *9b wol1anz Q3 = 5.0 nC is at (0, 0). What is the31mb:6o sllz3uw)na ijc* en 9 direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices2,y l u)4cawas of an equilateral triangle whichl4s ya ,)a2uwc measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges1v2. aekiz y. 3jhlt1i of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrosaeki i v.1t13jzy lh2.tatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charg7: ;th w-wxp lv4ze,x s,lrsl j+n.k1ze is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zztw4lwh xl,j;kxen.-z,l+:rs v sp71ero?

  Charge +2q is placed at the origin and charge -q is plqgb1lav yg6 *x4j3fq6 aced at x = 2a. Where can a third positive charge +x4j6gly*1gb a qq6f3vq be placed so that the force on it is zero?

  A copper penny has a)m ; 2yb9l)m 9jyxoa lk,tuuk6 mass 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 thehgp hm*l/(.oct srh6a4z8my 1 -xn 3xi force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protony4*xso i1tp ha mnhl-g6hxrc(/m 38z.?

  Two 0.20-g metal spheres a0rnf joy/ ,8z fusth 6e+.,fznre hung from a common point by nonconducting threads which are 30 cm long. 8 6j/zn frfs.,nfz +he to,yu0 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 awwy5() o0yek*7 xshq s charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus0xwwqoykes( shy57 *)?

  What are the magnitude and direzpc8j7/a vx wjq r4;w:ction of the electric field at a distance of 1.50 m from a 50.0-nC charvaq/c;zw 7r4:pjxw8 jge?

  A 5.0-C charge is 10 m from a small test charge. What is the mag(2y m ej,**iim,g wjtjsk3.ivnitude of the electric field at the location of the test *e,jks jim ii3 v2,*tjwm.(ygcharge?

  A 5.0-C charge is 10 m from a small test charge. ues eb12 p6s.yWhat is the direction of the el. us6e1bsype 2ectric field?

  A 5.0-C charge is 10 m from a small tesxrq48g* daknbfn .eux /4u /6ut charge. What is the magnitude of the force experienced by a 1.*q4r.ub4fkug8d6eax /xn n/u0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are sepa bv5u;zbqu80l rated by a distance of 4.0 m. What is the electric field at a point midway between the two char8 05vubqbl;uz ges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter ste 24 nm;lgs icpc bx)1 -2m/(qvayxg.tick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fiec(pnm)axg. xybql;/me c2v -2 1i tg4sld at the 30 cm mark?

  A 5.0-mC charge is placed ayxtu(ns- z5v9ejns8(xw e )9zp hn/z/t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elec nzusvtz8 nxy95s9zwe(/h x/-)pj(ne tric field zero?

  Two point charges of +3.0 mC and -7.q p6f +wdhp e(t(b8 b*5a7havd0 mC are placed at x = 0 and x = 0.20 m. Whadpwv 8q 5a7b ft adhhe((p6b*+t is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the tmgkqg e7):xik .5r0kjhree corners of a square of side 0.50 m. The last c0.qrmge7) jk k5gi:xk orner 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 side. Charges are placed at 3 houeect /x.1lp;o k: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 m h/:u c eeop.1kx3to;lC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a ch5:/n xn i+fo /gltlwhdm p66h5arge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fielhx:dminl6w5lhn +t6 / of/ 5gpd?

  A particle with a chz2 bgvmr7vr 1(mjc xty;7 w62jarge 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 0.1xfuq0 j8wb7 b420 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on thefb8bqj4w 0u7x ball for it to be suspended?

  A foam ball of mass 0.g 7r8dqz aqhv9v x,2j5150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of thehrv xzd 7,q58a2 qj9gv electric field?

  A metal sphere of radius 10 cm carries a charge of +20c v( o8q/ ( cf5el3nrr(i,cl,xykwvs.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surf ,qvx(3l0cfkr(yeov( ,8lcr/i wnc s5ace?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is q li -+;.magkhthe electric field 6.0 cm from the center of the sphere-k;hgm q.ila +?