State the law of conservation of electric charge.xq1g3oiql1-8 j j 9bmi

  Is it possible for two negat nxi5c nca4fae1fjg9rfon, ds2, /m63ive charges to attract each other?

  Is it possible for a positive and a negative charge to attract eac 7 8is(80wybme*,b; swgwnvwch other?

  A glass rod is rubbed with a piece of silk. ynbbq 9b2b(x; During the process the glass rod acquires a positive charge anbb 2y;n 9(xbbqd the silk

  A proton carries a

  The model of the atom shows udrlvros71x8q,yq oo j2-( 2 lv7klg*a

  A neutral atom always hpo pn8kzn22g( as

  An atom has more electrons than protons.j4qtbz u*yopk o cv+p0/3,g;.p /z wtq The atom is

  Materials in which the electrons are bound verjph:vvyd 2gahif i+ (/ zn:+t8y tightly to the nuclei are referred t+g / :pdv 8najf(hty2:+zvihio as

  Materials in which the electrons are bound very loosely to8 c/q9bp0df :co2 sqwpw 7-3p eqbxyq. the nuclei and can move about freely within the material are referred to asbww dx qyp0bqsq72 qp8cec-.3o/p9f:

  A negatively charged rod is 3 gj p38 k:bw;ldd(g-;vexmo ybrought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be c3 byd;j pkl gwmx8 vo(g;-3:edharged

  Sphere A carries a net posim 5mupw5w)aa6 hwfs-/.gz(qgtive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wgmgm6pq5s a(zfw/u) hw.-a5with a wire that is grounded. Which statement is correct?

  How can a negatively charged rodjw 7puhm ;bt,am5v ;xqy8 s1r- charge an electroscope positively?

  An originally neutral electroscope is briefly touched with 9ybkk(;vt1pm:rbn/ gnkp4u5qx g4 f 2a positively charged glass5xkgg/bnv42y1k f94nkp rmb; qp :u(t rod. The electroscope

  An originally neutral electroscope is g9( )oxz(kkqxt oypfe5 8 )y7vgrounded briefly while a positively charged glass rod is h5y( 9yoxtkf gep)v)okq8z7(xeld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separa7/tjbg)*8dl )niqszt,n) uu5sql5 c kn l./ kate. Then a negative object is brought near the electroscope, but does not touch it. What happ lgij ll bsckdq /*nk)sa5q nnt.8u7t/uz5) ),ens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral+l r qs,/3z-r3 aqwxyw);rh lk 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 tozl hx q3r;-s,+qy/wkwr)l 3rauch 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 Cny+vucql 7kltc y/(g 2 nvt/85oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepa 9pf1fz;f z9ckt7sroxq p+87 jrated by a distance d. The first charge is larger in magnitude than the second charge 7 tz9xrp 1f 8j;ffp+q7s9kczo.

  Sphere A carries a net cfh;dy(cyj4ebs x65, x fz.bw :harge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best de.d sybz46x: fy,f wb5e hxcj(;scribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o* yw,wbot ibvs*5z9- + xg1rahn both objects are double5a1r-w9, i**ohbstgy+xw vbz d with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual2as+ 3w5k jnlh attractive forces of F on each other. If the charges are separated sl2hnkwj5 a 3+by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eaj)l .j p /nwpvb7gpxj3ouu087ch other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the sepa. bxwpgo7jj08np) 7jl p /3vuuration 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 of 1.0 m. What happensi5+6 voq- lr7gma(uq6skl c6 m to the magnitude of the force on the proton if a second electron is placed next to the firs(cmul6 r6s+qk igvl qo5-6ma7t electron?

  An electron and a proton are separated by a distance of 9q:zen.;*kav(m nk h z1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed vne( k an*z:k m.;hq9znext to the proton?

  An electron and a proton a)q7to b npx axm83p7;zre separated by a distance of 1.0 m. What happens to the size of the force tz ob8)3;ap x x7n7mpqon the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q madgs; r*nr)gse-sz,4vn z0: is 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 square's center. Now, identical charges of -Q are placed at the other three corners ozsamsv,- * :;egsnn0)d4grrz f 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 placed at the centroid of an equilateral triangle. / lntgc4 4 yo-9bf+nxcWhen 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 cg 4-y + tbfln9/xn4occenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not h 2 .svb-.zwduuz .o0sh:h gv:a vector?

  At twice the distance from a point charge, the strength of tg c :c)gr gp4h (3qrtpxle+f:5he electric field

  Is it possible to have a zero electric fie fzi/va bew uqt rab7,4cy5c0+j7gs)/ld value between a negative and positive charge aloe50tc7 aby q) sivr 4/ ja7,g/wuc+bfzng the line joining the two charges?

  Is it possible to ha8)t tojwai-n6t x5th3amgu u)/-u 4u; pvgi.rve a zero electric field value between two positive charges along tho-t6uiatnh)p 3triuu j- t5)x8av /4.ugm;g we line joining the two charges?

  Electric field lines near cd:y5l *f4o rbpsitive point charges

  The electric field sb pva6uo ;fra:rff/::hown

  Can electric field lines ioneq h 3g(ow2+yv ;- 2swkhn(hntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele6 :ivdi ;ms/sbctric field. Give a statement concerning the electric field in the b;idvs6 i/sbm:lock's interior.

  If a solid metal sphere and a hollow metal sphere of w.l2q m-p5xa dy74bg g(f- bwgequal diameters are each given the same charge, the electric field (E) midway bqg-2fm 57dygpl4w- a.wgb(x between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a dbyvb t3c;*4 wuniform electric field is directed straight upward. Whatcbw4;v d*ytb 3 can be said concerning the charge on the block's top surface?

  If a conductor is in e:r u,hc9y fpup7fv r;8xpya r2)b4*mjlectrostatic equilibrium near an electric charge

  A positive point charge 1(wwfa2*us fcha7ooarwi :+r,ecyxs 5h3 )j0is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow a0y,(2oc i35x sofrrcf)uaheja*wsw w+h: 71 sphere has

State three properties of condk i:/f*n :jnfmuctors in static equilibrium.

State Gauss's law.

  The charge carried by one ely gao93*w wz4i3owazn2i1vy2 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. Hm k4 ayjg(p 1ir3ny5tn54u;imow many more protons than electrons does this piece o5(yj4namgt rky u534 pm1nii;f plastic have?

  What is the charge on 1 kg of prp f0rdwaow 1z4roq:ohg6 z62 /otons?

  An atomic nucleus has a chard r lo jammi26qo+18r3,svhb.ge 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 ofjg-wka.0m/yzcijq g;)a 00c2 x /xxhw-v 8ehq 2.0 and -4.0 mC, respectively. Wha 0xy- ch2k-igj.e)azjm/x 0;x w hav c/gqw8q0t is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betw1 5b*b xl rkj)o.o5xf vjkua*7een them is 1.0 N. What is the magnitude ofbb.f5jxo 7ux1a)o*lv k5*k rj the second charge?

  Two 1.0-C charges have a force between thgq+zc)/ nfc iz:shs+;em of 1.0 N. How far apart are they?

  The force between a jc15.*ka1. zgmlq 2qq-mc j, dzyh3lp $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apartmcdosoe*0 k -6, experience a 1.0-N force. If they are moved to a new separdoc*0k m- 6soeation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the xh; yfko24/owof8i clkd.z:v:-axis. The first charge is at the origin, the sdz yoo4i o:cv8k:.f k2hl ;fw/econd 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. Aabp7r 9zp4y/ y18z d w3elpv1b charge of +2.0 mC is placed at the origin, -2.0 m C 38bz1zrd/pe1pbl7 yy vpw4a9to 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 f nw rk)q1( (ovd:v::c2bnb uepollowing positions: Q1 = 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 magnitude of the force on the 3.bpb :2 q:uv :vcnkde(1onr )w(00-mC charge?

  A point charge of +Q is placed -8 fc1j.kes1rcuxu y(g3s 1gf 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 cent1 y r cfu1gcf1gsjx3se (k8u.-er 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 8mo2v. d+ww hu-j- ayn3ms9ty.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force w8j 3asn owmt m2-.v+dy -hu9yon the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 n j)kbb2s8 itz*C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What itbjs8iz)b* k2s the direction of the net force on the 5.0 nC charge?

  Three identical charges of o7-ju)ppr mm53.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elep)p m- u75jromctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are se3cfe k55hsfi2)v8o tv) oe;kc utpp ,9parated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge o9kft vhc svuk, 35e)28eo p;tio5fp)cf -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 ly .l1a0m6e /g:whqgt4 xe(or-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net f6:1wey.r oga0(megqt/xl l4h orce on it is zero?

  Charge +2q is placed at the oi)w93uh -i ip;dm)hybrigin and charge -q is placed at x = 2a. Where can a thirdhy3b9pu m;)-wi ) iidh positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tvx)ps5po 1nd;otal 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 grav ;-ji nwii,p1cb-2c 8rj* rp ,8zeuaeoity by the attraction of a fixed protocz-ac*-br,pj;8 o rn1ii ie ,j2up8ewn some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres a1)il;dhjp7pb:frb6-ghqkrs2 /ax 4 tre hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the ar rh4b7 pax;lfst-)g:6pi1bdqk /j2hngle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge od1 ap9( ),gg* vqbrswz)cky5v f +40e. What is the magnitude of the electric field at a distance of vvc*(ysd5 9r ka)g)pw,b1zq g 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dtf amtlyg.o-5lwge3l ;dv5 j 4-gg8(fistance of 1.50 mv-mggl.l5t34(f l -eojtgfa ;5gydw8 from a 50.0-nC charge?

  A 5.0-C charge is 10 m +yancs9ts/;0 2 khisxfrom a small test charge. What is the magnitude of the electric field at the y90 tnk ai +h/scs2xs;location of the test charge?

  A 5.0-C charge is 10 m frt4;ty ld5gxvm+h qf :2ut:vz, gs5g8qom a small test charge. What is the direction of the elg,2q5dt4mtfg;hz85v :uyq :vs x t+lg ectric field?

  A 5.0-C charge is 10 m from a small test chwpm3yltm;/ /0hlg8 jd arge. What is the magnitude of the force experienced by a 1.0 nC charge placed al/ ;hpdw mt38gmljy/0t the location of the test charge?

  Two point charges each have a xx,4+ 0eqfsa ovalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poinqoax 0s+f,x4e t midway between the two charges?

  A 5.0-mC charge is placed at tf4v:rl3 x .: hx6nmhlrhe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm .mxr fvhxr6lh34n ::lmark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charzx(l(, slr3 pw :hmvb/ge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric f lzlv3xhwp(r:m/ s(, bield zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and d y oi;ed w*2+kbxc21 9yd7kdrx = 0.20 m. What is the magnitude of the electric field at the point midway between them? +1 2e7d*;bdryxkc ow9dk dyi2

  Three 3.0 mC charges are at the three corne ypax,99snxd b +4nmqindq6-- rs 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 centerd6xxmn- q+yq,banpni9 s-94 d of the square.

  Consider a square which is 1.0 m on a side. Ch 2mc/ omssx(:iarges 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 the electric field at t/i s(xocs:2m mhe square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a un6z .z:c5wb+c 2lc3nz5zze vxj iform electric field. What is the m.6xcn cbv3z55zlz+z z :ewcj2 agnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of c6ljk7) egsnjywk0nk:4 +5 os $5.0 \times 10^{-3} \; kg$. 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 electric field ofk5uol,*b qo3 n0 ag/nl 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendl3 ,gon0 ukoa bnq/l5*ed?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placepu,ecf-ejz87am0 f)5li j3 ete65d yyd inside a uniform electric field, and is suspended against the force of gravity. What are the magni,5i y ffzc6 muej p0dl-8eya3)jee7t 5tude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whb8z d+yi9roh 2 wyrr7x2j5ut9at is the magnitude of the electric field 5.0 cm from the sphere's suwojrbx 5yhit7892z29y+du rrrface?

  A metal sphere of radius 2.0 cm carriesongi .u-761 azqo(xcp a charge of 3.0 mC. What is the electric field 6.0 cm from the center ofunz7 .aqoi 6co(g-1px the sphere?