State the law of conservation of electric char/je+bh h 7 kdgc;vat ;-hq3xd9t/o)oqge.

  Is it possible for two negative charges to atfj4p- gs,xxz 8tract each other?

  Is it possible for a positiv,x4o: pbu+io0ai r3iae and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass ey85sk:p rz i(rod acquire: ikzs5rype 8(s a positive charge and the silk

  A proton carries a

  The model of the atom whlh2 ( r9b;bqshows a

  A neutral atom always tn2ea:6vv2a h, 8 a,p.mrri dnhas

  An atom has more electron, q (d*bje*d2q4g-xgo+6: ga vdpmq mtrg0xx1s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei a ea+,h(zyx pc7re referre ph,(a +x7ecyzd to as

  Materials in which the electrons are bound very loosely to the nuclei and c n xfha7h4x-z)an move about freely within the mate7f-h4nax hx z)rial are referred to as

  A negatively charged rod is brought near onv e6pfojray 5f:mo2 24e end of an uncharged metal bar. The end of the metal bar farthest froarme op v f4yj6:252fom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere Bk5o6n 6a8 uu(b yjsj(j*ncla . is neutral. They are placed near each other on an insulated table. Sphere B is briefly to6*sy 5j( (ak lcn8u abjjn.uo6uched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chasmscw 9 l.vy 5b83, ilcelv8k.rge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelcuw8d364 iba d.lj 4pb7mj y8by charged glass rod. The electrl4m6pj7 i8dby8jd. abc w3 4uboscope

  An originally neutral electroscope is grounded u1zp;p3mkg qgvql8(g-gy)f 784 n blm briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electvq8kygl) 34 lgbmn8puggm(7f -;pq z1roscope

  A positive object touches a neutral electroscope, and the leaves separate. pi.1* -l303png8p ja imnvjpxThen a negative object is brought near the electroscope, but does not touch it. j a1invpgpnjp 3xm-.ip 8 *30l What happens to the leaves?

  A large negatively charged object is placed on a 5r:dec4am s ;(ngubivv7u6j3n 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 ne:gbs( rvjv7a4uc; em6in du 35gative 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 Coulomb consta twud 8:(b(3xqxo,y ejnd3; axnt $k$, which appears in Coulomb's law?

  Two charged objects am mpv 9l-b3iva(6xs7 .sggr 5sre separated by a distance d. The first charge is larger in magnitude than the second charge.lp3msvxbm 6s9 ir5.sg7a(- v g

  Sphere A carries a net charge and sphere B is neutral. They are placed near uoo2 s2 -a5zl cyvpr06w /a*ddeach other on an insulated table. Which statement best describes the electrostatic force be* a0od5y/z 6dsr 2lcuawvp2-otween them?

  Two charged objects attract each other with a certain force. If the ch6h-e ag+wfsxeb(occ33; ktl3 arges on both objects are doubled with no change lhx3fbs+3 g6c ae-;(oc 3ekwtin separation, the force between them

  Two charges are separated by a distawz*2kivlwdqmqoo90:0 z cyrf )zoj ;,w, cp9(nce d and exert mutual attractive forces of F on each other. If the charges arep mv9 wrd9,zz2 i*w,o0cjzc(w0: q o)kofylq; separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrs9.8hk* yt2sq6*b 1 k-vqygd br-g jhfact each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwee*r2g-1 b9gjdstk hqq 8hy6b. *fy- kvsn 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 happens e * o;k1ao;rhyq;b,fh to the magnitude of the force on the proton if a second electron is placef1br;o y,ke ;o;qhha*d next to the first electron?

  An electron and a proton are seq**8q x lx;onzparated 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 t;xoq*lq z8xn* he proton?

  An electron and a proton are separated by a distaks;h/oajmk/ ;kt7 i8vh ;:xo qnce 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 the h7:o mo ik;/qx8a;kvh/j;s kt proton?

  A point charge of +Q is ot7k;u :sfb+yeo:uk, placed at the center of a square. When a second point charge of -Q is pla:kb;tou ,:s+uo ey7fk ced 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 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 equilath g9ok/xr veb9ipyn2 ,t*.z4 ghu8( mgeral 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 of the force that o28bh p,/uezki ygx tv4.h*gmn9r(9g acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is n ml vyla1c)+9cot a vector?

  At twice the distance from a point charge, the strengx yx6rsordx0avy vy-u nv/4:po7 )b7,th of the electric field

  Is it possible to have a zero electric field value between a nega6sjq( )*-1q/fmic9 2xg ak ji qk;przntive and positive charge along the line joining the-r sm; n/(jiakq 2q1*kxpf zc)9i 6qgj two charges?

  Is it possible to have a zero electric field value between two positive 2oxedz:2u,rxe 5m r+tcharges along the line joining the twr xdr2zx:+toe em ,25uo charges?

  Electric field lines nzun9a1 g4 wgz-ear psitive point charges

  The electric field shoy0xdu c:b+o8b;; rcq ewn

  Can electric field lines intethwf8kfg :8 f6rsect in free space?

  A solid block of metal in elecujvxf c:3 ht*(trostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's i3x ch:t*vu(f jnterior.

  If a solid metal sphere and a hollow metal spherlmj nu43/0qqse of equal diameters are each given the same charge, the el0q/s4 unql 3jmectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in p*rf0tb2 1-rio8rqfavck*p 5q3 im*n a region where a uniform electric field is directed straight*r28aqqr*0 3-ipitbf mnvpok f c1 5*r upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostawvoasbm// 4uc:ek3 3ow -lw-)et vuu, tic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic1gx0 b7exsu (y4.ps vg sphere that is grounded. As compared to the case without the hollow sphere, the electric field at as(0ebx. vy7gp4ux1s g point directly above the hollow sphere has

State three properties of conductors -r88uiz kq u7jin static equilibrium.

State Gauss's law.

  The charge carried by onen w6phb)o9q) a:i,lv l 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 many more 7vpzj0kzg /d n1mjz0:zb st/y*u3 0yv protons than electrons does this piece of plastic v0z13v by0 pzkt/n sgm*uyjz j /7z0:dhave?

  What is the charge on 1 kg ofik dd ys0 .jxlx59x7-m protons?

  An atomic nucleus has a chargbtbj3y nla :mb7(a7stl27 h 7nr 8lc:ce 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 vaemt ehcx(c/q6 :t:kq; lues of 2.0 and -4.0 mC, respectively. What is t:e /qhckxm te;c(6 :qthe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second xc we:,(*14pdcux9ae7hs5l)aw t ifzcharge, and the force between them is 1.0 N. Wza7cihp9x:,d5)( seuwxfweac 1* 4tlhat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them k7rokg2/ 2olv 1vlj) xlbu8d+ of 1.0 N. How far apart are they?

  The force between a z *l:ahpa-/cv $30 \; mC$ 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 1.0-N force. I7wbeb,luh)v 7f they are moved to a new separation of 8.0 cm, what is the e)uvbe b7,w7hl lectric force between them?

  Three identical point charges of 2.0 mC are placed on v7lueo *3ow) er)d5swa*qzg 4kf37wbthe 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 c ek45vzgrofod q* bawwesu77l3*)3)wm 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 they jxv,aa; s bz0pa96tz /a1l/w 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 ma 6tal/z;axs zj9bywv10 a, /aprk. 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 pos4dt8p j(2j0jhrb1etxxrm w( yy8(de3 itions: 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 cha e(jjt ey jh((xb x1mr02pdr838dty w4rge?

  A point charge of +Q is ;o y1wpv0i5v2wa uzbr)bcw52placed 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 0ocizb yp5 bw v)1;w25uv2rwaacts 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); ti/gzhpe aqxo95 nm0h*,k1,lon n6: aQ3 = 5.0 nC is at (0, 0). What,hoe*/ ag nxq,5t 1p0k nm9iz: nal6oh is the magnitude of the net force on the 5.0 nC charge?

  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 i.ktl5u40.qor raj p8at p rk4a.r0 q8 oi5lt.uj(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.05jue w u;jo**vrcve2 5 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charge*vjreu*ou ;255cj vwes?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. bwaf)q; k znh .0912txkdwsl/ At what point, on a line between tk.w;ld 1q0)b nw 2zk/9tx afshhe two charges, would it be possible to place a charge of -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-C charge is vk;/oyjan*9ow6ijo2-b m7 lc at x = 4.0 m. Where on the x-axis can a third charge be / 2o9k7m* lw ib-jco6;v ajyonplaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whwzd; 2)k, gsppere can a third positive charge +q be pla)pds,2pkgw;z ced so that the force on it is zero?

  A copper penny has a mass k;c ) nkugs;/)uph6vbof 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 the force of gravi /h.tnh)ki 2 i*lqz7o2 eroca-ty by the attraction of a fixed proton some distance above it. c*i). 2a7 rqielk/-ohzt on2hHow far above the electron is the proton?

  Two 0.20-g metal spheres 9e 8 8hu5zxeziare hung from a common point by nonconducting threads which are 30 cm l9i5uxe e 8hzz8ong. 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 a cha sbcpbw(17j mz)b+rls1o1n9m8kq3od rge of +40e. What is the magnitude of the electric fiew mn klsc)o sb+p9br1d3mo71zbq8j( 1 ld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field atnp:wi ef6lx/; a distance of 1.50 m from a 50.0-nC iln:x f 6p;we/charge?

  A 5.0-C charge is 10 m from a small tehf: ql/c3gdbyi* wfk33gy.y 5st charge. What is the magnitude of the electric field at the loc:kf gwdyg i/53l3 yy .3b*qhfcation of the test charge?

  A 5.0-C charge is 10 m from a s4y iabu f64hr1diomqes,(c l7l s3q0 :mall test charge. What is the direction of the electrd , b4q( 7i0l6ls1ur4qsf omeia:h3cyic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thex ybr x,bzhy-u+-k+k40y.i p4 ia-p iz force experienced by a 1.0 nC charge placed at the loa4iry-hxbi,.i-uz p++-0 ykp4xb zy kcation of the test charge?

  Two point charges each have a value of 3.0 C and are separate(s zdn-hocq7(jpz. 74y1bl vn d by a distance of 4.0 m. What is the electric field at a point midway between the two ch h cz1-7znbnsy4(l.(dp vjo q7arges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC 6c88id7m*a. kr qko;af/ushh charge is placed at the8i r 7ku;k6qh*fo 8dcmas/a h. 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 +8q itegm2*lq a -4.0 mC charge is placed at the 50 +i 2tlq* q8gmecm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20endd 52c;/ ofe m. What is the magnitude of the electric fiel eo;dc n5/f2edd at the point midway between them?

  Three 3.0 mC charges are2nxc-5f9rlm(7 kw ro ,d: kblj at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at thelwcjkm: 75rxl9-rk,fd2 n( bo center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ;mmlei8 5co *-8hvmxn at the corners of the squae; i-m8xhomc*85mnv l re 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 the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is le)pt*bv1( +xkn7bjqh+ nq: (z/1g/pmqdeckplaced in a uniform electric field. What is/zq e k/bn(e:1tqpd+ *clpgj )1h k+bxvmn 7q( the magnitude of this electric field?

  A particle with a chargn 6k*upcomr 6.v4ic mp(7rcu;e 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 in an electrdl 6.6txu,v,zhulj y (ic field of 6000 N/C pointing downwa(,66lvujxhudzly . t ,rd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0cewb3j sid3zaj6ueo y6 ;a a)ic/ o..50 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 th3d)eioj3j5 a6 6y za.iocb.a/;w scuee electric field?

  A metal sphere of ra )msu5cyz7z; bdius 10 cm carries a charge of +2.0 mC. What is the magnitude b zm;)yu75cszof 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. alej/gyyhf6-( p 3okjnhu/ ue03s;9fWhat is the electric field 6.0 cm from the center oyuj ae-ny ls6u3f;hko //3ej0(hgf p9 f the sphere?