State the law of conservation of electric chargw zwmyyl12 rsx/-fg+0e.

  Is it possible for two negative chars,e+m ij;l (2y+tcd1lieu *dbges to attract each other?

  Is it possible for a positivcv6l:3le wz4e e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri )ce.)6(tzs+on*e+ ubx viyu y1omhv8 ng the process the glass rod acquires ove 6u+z)1t*y ces8.u yh)mobi(x nv+a positive charge and the silk

  A proton carries a

  The model of the atom showsxq+zo 9zais4g* z 3uex;bl6h/ a

  A neutral atom always ha 9i mdbyw))gx)s

  An atom has more electrons tjk *w 7 a 2m/in9nlms,ynqlx13lxj+ m,han protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei arei pox*mtxb;47 wuh tz:y.9w;o referred to as m izttwb9 ho;;w7x:u*4xpy.o

  Materials in which the electrons are bound very looasj2r -t4 j6hq ,uuy+asely to the nuclei and can move about freely within-r +a uq6jjtahs2y, u4 the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bjs( ;r7pa pi.xodvd 2 0ik-5huar. The end of the metal bar farth jkvd-p2p o7axd0 uh;s. iri(5est from the charged rod will be charged

  Sphere A carries a net positive ztyq/:ge,jtci f /v+1charge, and sphere B is neutral. They are placed near each other on an insulated table. t etv/ , zfcqi+y1:j/gSphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope 67v)ugep jf6 ruej4+lmx 1h o.y1hl*opositively?

  An originally neutral electra,jya9h4/ ykp0c p ld2oscope is briefly touched with a positively charged h4 pj c2 l,yakyp/9da0glass rod. The electroscope

  An originally neutral electros/ i.4bhgb dd+xu6sa +pcope is grounded briefly while a positively charged glass rod is held near it.b/.4u+ bdihsxd+gap 6 After the glass rod is removed, the electroscope

  A positive object toovjdx 9*h/mo9a y * s0/rxj(bjuches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happey ba9 *vh j/m/9*ojxxro0jd s(ns to the leaves?

  A large negatively charged ob6w4j 7f a8g4.1id lruvzwayktwm 4b21ject is placed on an insulated table. A neutral metallic ball rolls straight 7 z .w4abtryg6a 2i1kf 4u1dm84wvlwjtoward 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 touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coujpvrp733*du c 5lq8jplomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a disj/g-gbt78lh- g9 p xvrgf1d( ytance d. The first charge is larger in magnitude tha-gj bry7gft1gxv -gl9d/ h 8(pn the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed horrah1 4t:5knear each other on an insulated table. Which statement best describes the electrostatic force ba4 h5 h1tkor:retween them?

  Two charged objects attract each othe2ao3h wit.fs 8/o:bq g1t2aek.se9 err with a certain force. If the charges on both obf3b /s 8s..go e:hqak2 1ieate9w otr2jects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d andtop ns9 -1p8t,9yp lgm exert mutual attractive forces of F on each other. If the charges are separated by a distancep ptpy,- n91o8lm9gst of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo1o + 64cx apvg976hhu hb8wbzbrce between them if one charge is doubled, the other charge is tripled, and the separation distance betweencv6gauo wzb74 1hb8b+96hphx 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 eua8 d0t :e;qfcl 5a8pm. What happens to the magnitude of the force on the proton if a second electron is placed next ta;0e le5f8:q 8tadpc uo the first electron?

  An electron and a proton ares;dtkyn9 ze mv s8f0*( separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton fnm9z;e y8vs0kst(d*?

  An electron and a proton are separated by a disty 4wxoo2jai+m1x+s6 qance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer toxqoxm21ojyw + s4+ia 6 the proton?

  A point charge of +Q is placed at the center of i wpw p(i6np d1gc4u6 hr/57hu2lwct9a 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 square. What is the magnitude of the net eleci42 plcpc/wu6r 6 1(wwhtnig975 udhptrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed a1rtpbm5nb*n ujcahm4 s2w: *9 t 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 ofr15nn s94c:mbht*pa2j uw *mb 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 nb -dkl9q-j *usot a vector?

  At twice the distance fromsw7uc ..2wr ej a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativeu 75jvhtw8tw0(9siwm q(1ot(p9 jgj n and positive charge along the linq opmgj15tsnu 0((it7 jw(j9vwt wh 89e joining the two charges?

  Is it possible to have a zero electric field value xk2. rq*joq6zt 90og qbetween two positive charges along the line jxr qqtz.* 9o62o0 qjgkoining the two charges?

  Electric field lines near psitive poi y;rra / lr3.zi+rmo05r2mhg:5xkm eont charges

  The electric field sho 1+ kn)*v,h8 fyonop.ln1 c9jmqkcxw64hqi7t wn

  Can electric field lines intersect in free spa+y:0 : pf(tqs4nzauoj 2 :yjooce?

  A solid block of metal in electrostaticl/lqw/d 6imz0 o ;smc) equilibrium is placed in a uniform electric field. Give a statement concerning the electr0ql 6mzm) /s;/dlowi cic field in the block's interior.

  If a solid metal sphere and a holl 8y*qer,f/tzfh k;i(row metal sphere of equal diameters are each given/t ffr;eziy, rq8 kh*( the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a v6 bbmh;74i5qde3 osb wooden table in a region where a uniform electric field is directed straight upward. What can be said c45 vm36i; h sqbobbed7oncerning the charge on the block's top surface?

  If a conductor is in electrostatic emr:l +* u (ktu tas48i7nrt/bxq6q n*)tt)qa equilibrium near an electric charge

  A positive point charge is enc i+wuz)hyv -0s5cd;iblosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the eleydc-5v)+;0shiuiz bwctric field at a point directly above the hollow sphere has

State three properties of conductors in static equ 9su,- g ywpxa-x(ahh 12:qxfnilibrium.

State Gauss's law.

  The charge carried by one e-lj qy/ho4 o;g n-u3txlectron 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 zjcinmr4:ay r4tebk a4g(m 4n *qz-u3.w l.1 o+2.00 mC. How many more protons than electrons does this pi t*anym zm 1.u4i r4q4gw(3cjr k4benza.:lo -ece of plastic have?

  What is the charge on 1 kvngvf3s90 ft efm7,)a g of protons?

  An atomic nucleus has a c vw/z+kt4i9a fharge 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 bdjm8ax+v28y+bc* sm,ug0y jff 6s +imC, respectively. What is the magnitude of the electric forvfy j fsm*dc+8m8u ,b2a i6bsjx+0gy+ce between them?

  A 1.0-C charge is 15 m from a second charge, and the f vvz43m7c46q*j fjv*y +dql xborce between them is 1.0 N. What is th dqj3*vxc6vl v z*4q7f4mbjy +e magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How ftc p2*m2rx*a5 -)o7c q vtydrnar apart are they?

  The force between a h:8yna9 vp*qcoxl.)qn.g/m25e +hbg d (wofw$30 \; mC$ 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 ld2b p(g(/qxwbvf218o1 hvt e1.0-N force. If they are moved to a new separation of 8.0 cm, whahvwvd2bl gq2tfx81b( e( 1op /t is the electric force between them?

  Three identical point charges gh1s/a9 q wjz2of 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, and the third is at the 100 cm mark. What are the magniq2zg hs9/1wj atude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed)r bfn)tuea:o: ff(4p on the 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 electrostatic force which acts on the charge at :f) t ne or(f4ba):fupthe origin?

  Three point charges are located at the following positions: Q1 = 2.i0cm o,, lsvghy 63c4qiz,o)m00 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 )0ziic,,6 oq3yh,4omv csml g3.00-mC charge?

  A point charge of +Q is pla-,. a+og,yyb s:j s )jz 9bipz+uu.hkvced 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 ac,hb.yo :zgkijp +u- .a b)jv,su y9zs+ts 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 (0.3-sq4 s,/wew ha3h yh 5.fyf8sx0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnituf qeh4ss-y hwx8 5,fy/3wh s.ade of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.55vkie p lqr5:0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is tlp keri55q: 5vhe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are sk(jg)0h di,.ieye v;placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force wh, ) 0i.;djeigyh( sekvich acts on any one of the charges?

  Consider point charges of +Q and +4Q, whix2*5ayw (vpdl ch 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 electrost2d( p a*vyxw5latic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C)wj )gq +or8ui charge is at x = 4.0 m. Where on the x-axis can a third charge be placed soj8uw+rig) ) qo the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whk hiw jljbk0tz6:4pq(5.qt:/t ica-were can a third positive charge +q be placed so th-h bwpa:54 ilwkctt(kqz j0:/qjti6 .at the force on it is zero?

  A copper penny has a mass of 3.0 g.h t 0dwn,pz:uqdj 3gmqa9-;4m 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 attraction o;,xmti su7me( f a fixed proton some distance above it. How far atu, ex m(7sim;bove the electron is the proton?

  Two 0.20-g metal spheres are huf5xpdluzibpad: d h yifqv 65l9-(3sr(t/k3; ng from a common point by nonconducting threads which are 30 cm long. Both are given idenhfla5ds5 ;zx:dkl39b /i6p d3pyftqi(vu(- rtical 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 a charge of +40e. What is the magnitudjxqo )9we2xst./m m6me of the electric field at a distance oqw)92extmmxj m. 6s /of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at oecu8e * -ht) cvqx-pp1/wbr0 a distance of 1.50 m from/c -qt1cpuver)x8 -bw 0ep o*h a 50.0-nC charge?

  A 5.0-C charge is 10 m fg5do7tu ye 2+c0ssg: ebu8p1wrom a small test charge. What is the magnitude of the electric field at the location of the test chargeo:s dp+ e051gseg wycu82u bt7?

  A 5.0-C charge is 10 m from a small test charge. What is the directionzec/ h2v 0;sqi of the ele02e /qihc;zvsctric field?

  A 5.0-C charge is 10 m from a small +g ( fy(fgjhy3test charge. What is the magnitude of the force experienced by a 1.0 nC charge plahff gg(3 y+yj(ced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated gndd 0/*hxio qf)s5u/ z,uey2ajv305 brt :xvby a distance of 4.0 m. What is the elnjh*25) : xr0/yb 0vsueq/uivtz35o d,adxg fectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm jpce 3(sl:slj 1x8w,h mark of a meter stick and a -4.0 mC charge is placesh: l j1e3s8 x(jclpw,d at 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 -4.0bv;5k1 kb7 eih mC charge is placed at the 50 cm mark. At what po5 h ;kebib17kvint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC an438ph++thbn f0gwvs qd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between 30fhn+s4hwvq 8p tg+bthem?

  Three 3.0 mC charges are k lov(m4abj ,)1 r5(gdruc;p fat the three corners of a square of side 0.50 m. The last corner is occupil1ag,kcmr)f 5 r vjub;4o (dp(ed 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 sidmn :3.fsu:lh-hdf c*bd4ti 1te. Charges 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 -smt 1:ih*lnf fdt.3h cb:4ud the magnitude of the 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 elen h.2mi3ecnj: gz5t.ua9a6t dctric field. What isnc5zhdu2a9. :t inj6agt 3.me the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a m5) 3sj3itwd:j i2cuqcass 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 ang x m+ 6rd8c+t) ylsbv8(bj9wh electric field of 6000 N/C pointing downward. What charge must b9 6 md b+)vsc8trj+gybhw(x8 le 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 placb aty+m yp9z8,ed inside a uniform electric field, and is suspended against the force of gravity. pzy+t ab8m ,9yWhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitj-z(ftjg1 ,qxw s;b3 0jxdf9q.xok :wude of the electric field 5.0 xb.wwjj(t9o 3x; x:j-10qg,d ffsk qz cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 ewhgg- xzm./ur.8dg- mC. What is the electric field 6.0 cm from the center -d8 rgzug/.-ewh.g m xof the sphere?