State the law of conservation of elh(,wkr dt5z aq3k26b *g,ah vuectric charge.

  Is it possible for two negative charges to attract eac*kt2ln eaajt(ch:b 3 z95fz9c h other?

  Is it possible for a positinpo+iv p91gz ;qz+p* ove and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rog-m u yvtx32o ppd8(;kd acquires a positive chary2 3-dmk u8txpp( v;goge and the silk

  A proton carries a

  The model of the ato 0;znah,yizr 4m shows a

  A neutral atom always -0;nk fgfv4nn)rceuz /gt/bl/wsx /9has

  An atom has more electrons than psx,/z,j j96qydhw2gkedi *0 yrotons. The atom is

  Materials in which thc :llox7q0 :cye electrons are bound very tightly to the nuclei are referred to asoc:0y x:7 llqc

  Materials in which the electrons are bound very loosely +mhr)n cu 2e/xto the nuclei and can move about freely within the material are rexmn + /2ce)rhuferred to as

  A negatively charged rod is brought near one end ofut;959izf0 vpx.k7yzgxw- md an uncharged metal bar. The end of thuz90t7 - i.gz;9x 5xfk ydmvpwe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutxm be5i.l2f ef,soq7 rk +f8)oral. They are placed near each other on an insulated table. Sphere B is brifqff8korl2)x5e +b.,e7m ois efly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge ae4*qs dm8hq v0n electroscope positively?

  An originally neutral electroscope is briefly touched with a posito6(2pl(lz-5 bezyve* skx.v oively charged glass rod. The elec-( oxy6 e vz5bvoes.l*( kplz2troscope

  An originally neutral electroscope is grounded briefly while a positively charget /zl,ab w1k+md glass rod is held near it.m+wa k b1,lt/z After the glass rod is removed, the electroscope

  A positive object touches a neutral elebi:( ty; .bv ex3: qzi4fthjt0ctroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch qe(iy 4jifvt t bhtb x0:3;.z:it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral ,8n 1drg5fnlp ,.znrzmetallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ballr pf5dlgnzn,rn ,.1z8 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 Cf,v ycg*tti5*m(kj r)oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects ary48df3a;o41m xwv 7 c9uxpcnbrs.v.ge separated by a distance d. The first charge is larger in magnitude than the second gw4nm4a vob1xxr7u;3fy9p.dc v s .8 ccharge.

  Sphere A carries a net charge and sphere B is neutrap x2p/n lg-gg+kso 3j5l. They are placed near each other on an insulated table. Which statement best describes the electojnsk+g-px35g2/ p glrostatic force between them?

  Two charged objects attracz 52uprtvwlsgbut 8m74 g)i1+t each other with a certain force. If the charges on both objects are doubled with no change inmw +pu 4r5igls81bt u2g)v7zt separation, the force between them

  Two charges are separated by a distance d and exert mutual attracjiz-uv7by); sr vmw52 tive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?-7ws mry2vib u)j 5zv;

  Two charged objects attract each other with a force F. What happens to the ioatiadi1jpdq:2 su*+4(q v 13/oksm c d)yn5force between them if one charge is doubled, the other j2ya3 : svm1 qsocutddin ia451+*/ip o()dqkcharge 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 by a distance of0vox t0cj8) ,+gsudan 1.0 m. What happens to the magnitude of the force on the protodtn),gxo8 jv 0s0au+c n 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. W zqh5: kzby8x,hat happens to the magnitude of the force on the first electron if a second elez,z kqbxh58 y:ctron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 cda7y1,i5 vlv m. What happens to the sldv7 c y,ai51vize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plaj-z1.3ukcyvsz 9 lccrq8 5; aeitu3a*ced 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 square's center. Now, identical charges of -Q are placed at the other three corners of the squl j-ua9uat3;q1 3r vkyc*e .8c 5ziszcare. 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 equilateral triangletydefdyi(+t1b+ m+8 f. When a second charge of +Q is placed at ott1yydf+e id m++b(f8ne 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 nn og9zkh 2 nay8(5 hp:0m(sjg1gz8soz gip 3c3ot a vector?

  At twice the distance from a point charge, the strengtvzq8sgx6f. ( x97(0*p gkiy q rkm3qgjh of the electric field

  Is it possible to have a zero electri;ishlycxt) rxg09,/qmd 4c q 2c field value between a negative and positive charge along thdsl;x9g)2 t qcm xh0c,4iyrq /e line joining the two charges?

  Is it possible to have a zero electric field vap97 i(cb* wcjmlue between two positive charges along the line joiningm ( cj7c9p*biw the two charges?

  Electric field linesbb +atv*r 3;k(. xz,mjrkd+z t near psitive point charges

  The electric field shown v59b6o2ujf/plig 1gqkr- 1rg

  Can electric field lines intersue-gl e/d 1onnp1zj e.tpm9 z,(lo 1/nect in free space?

  A solid block of metal in elect5 rv0umnww 0g;rostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field i0mwgw0un5v ; rn the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal + okwq2bd3 7t4g /pjtkw3wjb 0diameters are each given the same charge, the electric field (E) midway between the 3jg2j4wq0b o kt k+73wp/wbtdcenter and the surface is

  A cubic block of aluminum rests on a wooden table ippa/l9 eodz f,a/*i3og2.aain a region where a uniform electric field is directed straighl3iipeao ,z/opd.a/9g *faa 2t upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ele/+b rrezdnkjx6, 5ts) ctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere-*l -e8 xgziqc that is grounded. As compared to the case without the hollow sphere, the electric field at a*ic-elgq- 8 xz point directly above the hollow sphere has

State three properties of conductors inqrjb.0 : hjm5j static equilibrium.

State Gauss's law.

  The charge carried by one elel568 +btkkidj an::k qctron 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 protons tvr8e e +6jz2ychan electrons does th2y6e ver8z +cjis piece of plastic have?

  What is the charge on 1 kg of )w 0xdc - kvj/i-lwxt7ps0q5sprotons?

  An atomic nucleus has a chargc :g3jgn i,sy8 mm*.ete 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 mC,k.wyf)eo9-*uit ejj xo7e 7qp. ktt93 respectively. ee- qo9 t)39tft* .ejk7pi xwkoj .u7yWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 *d,0 1 rvccuccr 87fpht) :aujm from a second charge, and the force between them is 1.0 N. What is the magnitude of the second chargeaj:vr d0u*,t1hc ccfcp8 u 7r)?

  Two 1.0-C charges have a force ,,vwa*f l+ d ewyfxbk1s z6u7b9l;ap0between them of 1.0 N. How far apart are they?

  The force between a rv7c t;:1a +x-h/kfluvapbo *$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experizyrxy)m7/vz- hg2 tno) qi9f0 ence a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between tz x) o9vi 7/mzgnh-0)y t2yrqfhem?

  Three identical point charges of 2.xj lk,vm s7d 1.ml4j,*iay6 mv0 mC are placed on the x-axis. The first charge is at the ol6j,*sjl1mi4k mv.v ad7 x,myrigin, 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 mC is placed aic98e(gl mmjte qjb/(c4(x utd+md01n6i3 dit the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at th( ( mj(9tl diq 1x +ebunj3igmdect64c d0m8/ie 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 positifu/5b/uax()q00yvx2 mco scs ons: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 =( xsy0c5 qxbomacfu0/) u/sv2 -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 center of a square, and a secf6bxz/3m0j a ka.l cu6ond 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 cemk.ac06ufzl/3bxj 6a nter. 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, ;fv nt-4iuu7b 0); Q2 = -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 the 5.0 nC charuvf7btun ;4i- ge?

  Q1 = 6.0 nC is at (0.h) 7pwcr7or x530 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 charge ho7rpw5x )r7c?

  Three identical charges of 3.0 mC are placed at the vertices of n;4o8 v ofl3ljf+etr( an equilateral triangle which measures 30 cm on a side. What is the magnitude of the ee+;o lf8 4ljt3r(fnv olectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separat c 18jcq5x0yakkht6- ved 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 electrostatic force acting on it would be x80 hk5y-ajct6cqkv1 zero?

  A +3.0-C charge is at the origin a6ggvz.u2wgli+wsp6- nd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placeu2gv-gw gl+6.iz p w6sd so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placedmb(e( g7wbpvt)i)ck4 at x = 2a. Where can a thir4bmei (b7 )cwpk(tv)gd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total, p./u/+ pbzzixxnk /s 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 fdtn 0pm-9m*t v0ijg. against the force of gravity by the attraction of a fixed proton some distance above pmg ftmd9jv00 nt-*i. it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconbwze+ - -n()vbmjo4adu.zz(ndhp . a,ducting threads which are 30 cm long. Both are given identical charges, and the(j4,zaze(.w pb .- dnd mz-+unvh)oab 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 ftb) +xle9/ho a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from theb x)h/ +f9lote nucleus?

  What are the magnitude and direction of the electric fi71r3q/d n82wonypj m celd at a distance of 1.50 m from a 50.0-nC charg 87r2/m p3qn cdnj1yowe?

  A 5.0-C charge is 10 m from a small test chargkc, z- 8catj7le. What is the magnitude of the electric field at the locatcj,-8zclkat 7ion of the test charge?

  A 5.0-C charge is 10 m fr3roj0lr. on3 crb+7thdqw+j-8g ;cflom a small test charge. What is the direction of the eljbc 8oc.l;0twjr r7dl g3fhrq3+ on+- ectric field?

  A 5.0-C charge is 10 m from a small test chk6dmj0x9/e5k mz 3nvxbkvk:;arge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of t3xk0nkxvjb6 ; k e 9v:m/5kdmzhe test charge?

  Two point charges each have a v7qwa;;jb cvj (alue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at j;(j;7c bqav wa point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ch:nw-3 2 m.8sf y-wbyxgvu bd9qarge is placed at the 50 cm mark. What is the electric field at the 30 cm maunww d:fqb -bv 93 .m-xys82gyrk?

  A 5.0-mC charge is placed at t a 7cq0.6gkf,r 8vrehlhe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what pfrl8 0vq6ahrk.g ,ce7 oint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and wxjmw-gw45) w -7.0 mC are placed at x = 0 and x = 0.20 m. What is the m 5ww-)wwg4xm jagnitude 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.axyu( ocm*: v-//datm The last corner is occupied by a -3.0 mC charge. Find the eletoc/a*m( ma:y- v x/ductric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corner8njucb/y.mu zrd;.v/zr scu n 49gro+r-9i8ls 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 theduj.rrmui-nozl gn;ru.9cs r+4/v 8c /8y9bz 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 e)eo7 wj2 re9nvf9lig) mm.p)olectric field. What is the magnitude of this electr27mo. rg) evilfp9wje9) n)moic field?

  A particle with a charge of 4.0 mC h3*212u9izr7vrimva clp +m beas 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 plogf(/i)n p4 aq/tn;, ldg sz9vaced in an electric field of 6000 N/C pointing downward. What charge gao4(/pq /sf 9nd l)i,nv;gtzmust 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 plaq3/v;mgp p.o6s is ;rjzs3l7pced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fie3sli;v 7.j36m gsqo/ z; prppsld?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is1egd(8l etfr. the magnitude of the electric field 5.0 cm from the sphere's surfa.dt g1lfr e8e(ce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What o dezh/ f+ (uew*cr7c*.evs3pis the electric field 6.0 cm fro.*+eo z3sr c/p ( *hfveeuwd7cm the center of the sphere?