State the law of conservation of electric char +8qmv x-m* ijqv81ef,vz4r0 xnapu f*ge.

  Is it possible for two negative charges to atty(xpxy:4g ds 0ract each other?

  Is it possible for a positive and a negative charge to attra+53x89 mp,lr b tih jwh28qnpgi+2qtwct each other?

  A glass rod is rubbed with a piece of silk. During the process the glasihna:kd+: :mws rod acquires a positive charge and :nmk: +a:hiwd the silk

  A proton carries a

  The model of the atom shobgnvny+x 4ra hy 0,o*t5 *+cpows a

  A neutral atom always haskt b l35mtxe*)

  An atom has more electrons thannos0:9lxy t-e protons. The atom is

  Materials in which the electrons are bound very tightly to y/51eaub+ ; gvx :kw3h8eituvthe nuclei are referred to asywugk/315 a8b;ueiv+etv h : x

  Materials in which thev 38o5: pl ixx8ci:otv electrons are bound very loosely to the nuclei and can move about freely within the material are referredv x3v8 tx:lo i8:icpo5 to as

  A negatively charged rod is brought near one end of an uncharged metalz5s 9v +sv an6q6.8i*ukllrlj bar. The end of the metk ll*l 69vs6v j8i5+nsu a.qrzal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sph ho--0i 2(cds w,whoqjere B is neutral. They are placed near eo-w qsj(h d-c2hiwo,0ach other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope yv;)(2.ngc: eh6x mev/m uxlipositively?

  An originally neutral electroscope is briefly touched with /aw4 a,x: z)vp :vgpffa positively charged glass rod. The electroscpv,zf fv)w:a/ a:pg4x ope

  An originally neutral electroscope is grounded briefly whillds40u;4jy73g dm zj8m;x leve a positively charged glass rozx j 0m7gljm4syed ;;d8u43l vd is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lhkklb+nyf0(dkx,9x 5 d- j9j seaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happek,l y dxb5s9(-d fj9kxj0kh+nns to the leaves?

  A large negatively charged object is placed on an insulated table. jn vlq .umd92ld ov)r c-70eo: 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 bq)ed -d o:c lvnlroum297v0.jall, 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 Coulom6:m.7nh haqbc+c z; cmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d* kenr9e mqlpre6 usa )t8y-t5h 2l*d9. The first charge is larger in magnitudem n-ld ys) e*lphqtu et*6rk98r 5e2a9 than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They arc8yzf)j2 r4 ure placed near each other on an insulated table. Which statement beszy4ur fr)c 2j8t describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges h 21vabm/ead7on both objects are doubled with no change in separation, the force betwaa7b21 /v ehdmeen them

  Two charges are separatedthvxmp+d.a s. :x(fsc r32v5r by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are thx 3rvhdacm.rf:2(5.+sxtvp se new mutual forces?

  Two charged objects attract each other with a fo g (d llscoux x-lw-fz+q8v 3-5(xqd6mzka d;3rce F. What happens to the force between thefz cm d+56z8;xavskul3 l ow(d( 3--xxqqdlg-m if one charge is doubled, 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 by a distance of 1.0 vt d hw t2q+o-h62a ,8kwbgez,m. What happens to the magnitude of the force on the proton if a second electron is placed next to thoqhz,gwh-e2 2bk wv, +ta 6d8te first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wg/j-;m c, 76hyn)tdd+y. gw2tuqqy .magx9h yhat happens to the magnitude of the force on the first electron if a second electron is placed next to h/u2jnt;dyymmh xa- wy+dg.q, yg6.)7c qgt9the proton?

  An electron and a proton are se,kivnqqr+z d6s; .e)lparated by a distance of 1.0 m. What happens to the size of the forcrqvs+z il n )k6deq.;,e on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q i;d i y;cm d+f:4roviv0qkmh02 jvk1q+s placed at the center of a square. When a second point charge of -Q is placed at one of the sqv40chi 0qy k12i+jv:d;qdm; rvfokm+uare'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 placed at the centroid of an equilateral triangle. 8pwi81cwnx5 mpu0f8t 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 of the force that actsf nu 1wpx5wt8 ip88c0m on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is note,n yk+q4pskr4ucw2 - a vector?

  At twice the distance from a point charge, the strength of6/k/lkbny)1 x0wg2)som+zfz aorn, t the electric field

  Is it possible to have a zero electric fiehb;/v7z to8dx ld value between a negative and positive chax zdhb87ot;v/rge along the line joining the two charges?

  Is it possible to have a zero electric field value be2k/,/fqt:/ nkgio o tbru- 7upekt )-ctween two positive charges along the line joining the twot/ribe/)kq- ,koouu7nptg-k t:f/2 c charges?

  Electric field lines near psitive poinab u60x ,(e )tflizf2ht charges

  The electric field shown 649 xusk- mr bs2fabp-

  Can electric field lines intersect in free space?djx3g 19agxyvjk+d2 p x 42-ad

  A solid block of metal in electrostatic equilibrium is placed in a uniform zah; ; ,g6jwyu9lgy4l electric field. Give a statement concerning the electric field in g4a;l;yh yzlu6gj,w 9 the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diam7+v2 xr*m8 ub-,belheuwnol:eters are each given the same charge, the electr8v:heb*2b nxu7u l,r+ mo w-elic field (E) midway between the center and the surface is

  A cubic block of alumif 8ux7mmbbfifz* hg6r e/v2(ns,/c 8inum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerninbun7br8fim/cm/ (2fzhxe, fvig8 s 6 *g the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elect ahw: h2dw2;juuu1pb.ric charge

  A positive point charge i5pa 5aawg,v8j kfxmxp1./2mij6 uj3ls enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fiemi6j 8p.ax5mgf5l,/ v aa j2k13jwupxld at a point directly above the hollow sphere has

State three properties of conductoidov8av* bw(u7q mn xpft z49i, 9of8v.v6 /tcrs in static equilibrium.

State Gauss's law.

  The charge carried by one elec8f,ht o .cezytx:f *9h- :ldu/sgld0gtron 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 al3ugo 56 uc/nh net charge of +2.00 mC. How many more protons than electrons does this piece of plasti3un/5c u6h olgc have?

  What is the charge on 1 wfu /u: 1-hlaxkg of protons?

  An atomic nucleus hak4fufr ptv2,.o*nz3rz ln 8m 85q3jt hs a charge 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 c/go1bvs* u;yod+(hh tharge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elecd+*yo /v( g;sothub1htric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them r /rgw779s3uyugf xg 0is 1.0 N. What is the magnitude of the second chr7 uy grgsu 9f03gwx/7arge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theycoa4wabi;n fuu2.:a9?

  The force between a levz 36,yakh. v6 pdecb5qv17$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial*j :6sbs0x7p cbc o)ofly 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 betweeoxc* fbs7jb os)cp0:6n them?

  Three identical point charges of 2w6 t450m+anl hkb.gh a.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 magnitude and direction of the electrostatic force which acts on the charge at th+ la g5bnm4h tw0.a6khe origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed u)vmmb4g d m/5at 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 wm )ugdm5b/4mv hich acts on the charge at the origin?

  Three point charges are located at the followin z,s wcm x6(wrd*tiu/h 0yt50gg 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 3.00-mC chwryh ug/5*0cs6 i xt(z,t mw0darge?

  A point charge of +Q is placed at the centy8 gun34adofxivb,.)er 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 8on db,av)u4 yigf.x3center 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 i lmz ansq01x4y*8;r5uz (agpy s at (0, 0). What is the magnitude of the net force on thel14s(pymrqy;5agz*08za x u n 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is a4k- o,vnjf7j wt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.ojjk7-n,fv w4 0 nC charge?

  Three identical charges of 3.0 mC arw3st:6arr/ m ke placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elecmr6asrt /3 :wktrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated btagf 7g p/veua ay+o8k4+z 8i+y 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 acvzto gk ia+87y8+g/ fpaeua4+ting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 mdc fgiq44p,4zwok5 6 g. Where on the x-axis can w 4ozi,pfd4 g65k4cgq a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and cht g: 7m:fubl b6hl)c:dq7scct+liv. 7 arge -q is placed at x = 2a. Where can a third positive charge +q be plaqcl. :vtbfsm)76 cu7l gbl::t+i cdh7ced so that the force on it is zero?

  A copper penny has a mass of 5bkuyzp3p (.vo+l;s6zpe+ mz3.0 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 fod keor;;8sz5alkqi v/-( )klfj3ci1g rce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?5ae8k1 k ;l jq-okd(s)gc 3/zrl;ivif

  Two 0.20-g metal spheres are hung from/ic se(gtm996pxkeo ei944by a common point by nonconducting threads which are 30 cm long. Bo/ee p499tixyibm o9 ge c4ks(6th 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 a charge of +40e. What is the ma9m qj(s 8nj p5lusj+a1gnitude of the electric field5(1mjj9lus j p8q+n sa at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dzvyf0mvsg27 7bzeom69 ,(m jm h0/xmqistance of 1.50 m from a 50.0-nC char o26 vme7 mbz0(q7zx9ymm,jv/hs0 mgfge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude;n suowuc6y.+ ;)omftc 8koy) of the electric field at the location of the test cha st6o)c;nouwyc;u +fkom 8.)y rge?

  A 5.0-C charge is 10 m fvf+cobaw10 g( lw4yg-vi:e6y rom a small test charge. What is the direction of the electricwlo vw0-i y61cy(fa:beg g+4v field?

  A 5.0-C charge is 10 m from a small test charge. What3 ;rddambb 6we0e00 ef is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?0d3bf m 0e 0dewa6eb;r

  Two point charges each have a value of 3.0 Cgj)l11p/ uy *v gc+cby and are separated by a distance of 4.0 m. What is the electric field at a point midway between1 ycc/j*bgglyv1+)u p the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and 15ligyaji8z 8,.c+o5b wozfi a -4.0 mC charge is placed at the 50 cm mark. Whaw +ogj5z,8bf i8iza.5oic y l1t is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark on 7d a4x:6i olnss8:qcf a meter stick and a -4.0 mC charge is placed dssnl n: ca48oxiq67: at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC e9 j 0rdwo f)xd)gdlp23.xr1p and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fiel pgjr9r) ddl2.13pfo e) 0xxdwd at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T m7ey 1vb s+whef-m96she last corner is occupied by a -3.0 mC charge. h6v7+ey9s-wms fb1e m Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plac3wogb06)dhtysb,)rtkq 8u3h 1e s+ pfed 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 mag6)d+k qu)tp,8thhe10 ssg3fr3 w oyb bnitude of the electric field at the square's center?

  A force of 10 N acts onk ef(f:w*z+s o a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fiel wz(:o*ffs ke+d?

  A particle with a charg-h.oy0t0 tjoae 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 0.120 g is placed irgrry7w vn.q ,3j us/s0-h, nfn an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?-fyq gn snrv07rj,ws .u,h/3r

  A foam ball of mass 0.150 g carries a charge +eo+on(s ey i4of -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 the el s+ieeo+ 4no(yectric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What cj uk7 f usdwqpn,69(*)fs1ucis the magnitude oju)cu1qc 679s nw*ffd(,kuspf the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the exi93d b.zo- cef4;jeilectric fieldf x4cizdo3 -b.e;9 jei 6.0 cm from the center of the sphere?