State the law of conservationl2g/b a ohd 1a;ml:hm,fdog34 of electric charge.

  Is it possible for two negative charges to attract86d5 x suml/r /oad4sw each other?

  Is it possible for a positive and a negative charge to attract each o;7w ybjm1wg5ci . z3*dye+iov ther?

  A glass rod is rubbed with a piece of silk. During thegvjnd 8t4r0k +s9rs5x process the glass rod acquires a positive charge an trjs+x508v9ng4 sk drd the silk

  A proton carries a

  The model of the atom s/thqfbqx3bf x5 15-gb hows a

  A neutral atom always w/ u9h:*lg wuvb-.so2yc- mu dyhv,ppyn(2:bhas

  An atom has more elecv 2s)xyr :s 0cdn0etzuq+db/-trons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are ia;wu*-q7 mupe58tm i referred to q;* uai 8e-t ipu5mwm7as

  Materials in which the electrons are bound very loosely to the nuclei and can :-rt-:pfl w; rwiohz* move about froz:-rlt whpi-r*:;w feely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged met 1svop5 xm*ft1uzfn-6 al bar. The end of the metal bar farthest from the charged rot p1zs*movfu5 -n1x6fd will be charged

  Sphere A carries a net positive charge, and spher) cljw*e qri -)xzn6d;e B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statementeri; lq6 z*d -w))cnjx is correct?

  How can a negatively charged rod char+ hb7nyy.t*(g p,cn(hw+r t iuge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively cha6+qa 7mx sbq;x ,;llerrged g l7sl6qraq eb xm;,;+xlass rod. The electroscope

  An originally neutral electroscope is grounded briedzwxo t .gr )d/3,dp.)v 2ptsqfly while a positively charged glass rod is held near it. After the glasswgp 3dds p ,v.q)ot.xd2/rtz) rod is removed, the electroscope

  A positive object touches a neuq uv )z hyuva0o07lt3hue 4:6s7 iqic(tral electroscope, and the leaves separate. Then a negative object is bre)0oy4 qz(hv:vuh 0a 7t7uu i 3i6cqslought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. wnp4. bh48uki -2czzd 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 negative object. At no time does either ball touch the negatin8db2.pz hui-4z4kcw ve object. What is the final charge on each ball?

  Charge is

  What are the units of tydv ko, 48fypzla+o15he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger w3xminw3 0 +2 iu9 gn,supbm2kin magnitude than thxwpmug b0u+ws 2,i i2n3m 3n9ke second charge.

  Sphere A carries a net charge and sphere B issddl,:1:qs+8kwan fv-w dmc 4 neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force nwq:da swd 8vfk1-,+:s4ldmcbetween them?

  Two charged objects attract cw9a 1a vt6tk7each other with a certain force. If the charges on both objects are doubled with no 9vckt6 17atw achange in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractiveetd5lnd-+:dv3smd1 d forces of F on each other. If the1:d3s+e-d ltnddv dm5 charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F29tcd)r8 50lnq bfnj6tps cs .. What happens to the force between them if one dr5sslf.t9 cb )q60n t82jpcncharge 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 proa.z -588 wbaz klfddl7ton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second ellb. w 88zkzla57 fa-ddectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happenkahw7 3y4; moxs to the magnitude of the force on the first electron if a second electoyk3xm;4ah w7ron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 * hkqs,pq (;ucm. What happens to the size of the forc c,up(s q*q;khe on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed 1f( zbxw+ime1i7me/z 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 ixmw (if/em 117z +zbeon 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.il,;p es4+cj 9a r)saz 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 thepsa;9lc ),4 jersiz+a 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 not a vjrz339gky8xq;vp n;) ov:lbqector?

  At twice the distancwapoch .9iv en3mi -24v-:otqzx ,p6c e from a point charge, the strength of the electric field

  Is it possible to have rm 9qkq: sp:n::xp,kl a zero electric field value between a negative and positive charge along the line joining the t:s:qpnl,9 pxkrm:: kqwo charges?

  Is it possible to have a zer)arf lfohoz; -5jo :6rri0 c)to electric field value between two positive charges alj -az:oti0rrlf)oof6 h r5 c;)ong the line joining the two charges?

  Electric field lines near psitive point chargg:e4evu :cq j9es

  The electric field shown m zzvoxqp/w-c;*at68

  Can electric field lines intersect sq5f1+oqf8w 9a tm zyn8ng .)jin free space?

  A solid block of metal in electrostatiunpnja 2t,ui-uc d u-*/ld pyy)+:e p0c equilibrium is placed in a uniform electric field. Give a statement concerni au/dn:c0+ pil-u pj*uypne -dy2,ut)ng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equalf0jc5wo f,;vhlh s;n, diameters are each given the same charge, the electric field (E) midway between thechfj;;v 0fn, o,sh5lw center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where aa7lfqj *8m (fta*:d ws uniform electric field is directed straight u :7w j8df(t*qmaas* flpward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equixw., z6 my;yb d 5danr0mv.ee)librium near an electric charge

  A positive point charge is enclosed in a hollow metallic spherez5 7l4qp/kip a that is grounded. Akz l47/ 5paiqps compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of rkhy5b4ykk 6n th -466*rlrutconductors in static equilibrium.

State Gauss's law.

  The charge carried by 27ntku5v3we ql mf .1eone 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 +2.0f ;ux*c o*yyz)0 mC. How many more protons than electrons does this piec yo;cu*f*xy)ze of plastic have?

  What is the charge on 1 sl.f.+u 0er5pa 6.yqcqa1oohkg of protons?

  An atomic nucleus has a charge wy/pmn 8l9hjsq6y 8/u 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 2izv4fyvm )52,novri,v 0eh6v)3 ie y x.0 and -4.0 mC, respectively. zixhvy4 ,i0rn3y v )em65ev 2o),ivfv What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them ic n :a ti,*pnnv47mgx,s 1.0 N. What is the magnx ,74gpc n n,tm:n*viaitude of the second charge?

  Two 1.0-C charges have a force between them oo a769qit7fic(5u0q ( 6ljz 0 ficeqpof 1.0 N. How far apart are they?

  The force between a ggg .89su/pdm$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inlqz*bh 4y u( eac2 el*jtg(u+7u y7fb0itially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation f jubu 7e(a2q y gyzb*(hlt*70 uc4l+eof 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-4:9f2ei ;wjaki izx w6x t4o:aaxis. 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 jioz4f xwa9 46:i k;xa:twie2of the electrostatic force which acts on the charge at the origin?

  Three point charges are placohiu:dh66c0n i q6ex as4qf/* ed 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 m*dfqiqeuoc46 6h/sh 6a x 0in:C 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 arq da3p565cjd-tih+v d e located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00dd t3vha ipqd55+6c-j 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 pwixma; )0vxkx:;0- xmu *j nkqlaced 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 center charge if a third charge of -Q is placed at the lower-l j k0qxvxaum:x;)*wx;in- m0keft corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); fco:dn* *.tl*dc:wil9x +xdxg yt/u+Q3 = 5.0 nC is at (0, 0). What is the magxc**/+ l:xid fuy 9 o.:tnwltc+dg x*dnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); *v ur;b0l6tba)4/v m wo6bfwqi; eo m4Q2 = -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. br/v blm )4;b* ;u6v4t0f6wwoieaom q0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of z7w4j3 uj1)usv/tcjian equilateral triangle which measures 30 cmuv)jjw/ t7 4zsu3i 1cj on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 io+7z+ud) nj om. 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 o7 dj+ou z+n)ibe zero?

  A +3.0-C charge is at the origf6zn2 edon5+mu++lx..jy rto :7cdu pin and a +9.0-C charge is at x = 4.0 m. Where on theu x+y..ojudcop rle f27 mt+n zn:56d+ x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placel*agb(r alw j -lb12s; s8av . xxyxy019q+ypwd at x = 2a. Where can a third positive charge +q be placeda2 .y xqyr1asvw+lxgy18 9;ajb* wll0-x(pbs so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tote77k:oz)/gegwodot lz j8c, 8al 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 gr6 n lo) gj+5k:,detmodavity by the attraction of a fixed proton so nmed6 jo5+l: )otdkg,me distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a na2 :ympfe,o*voln00l p:l /v common point by nonconducting threads which are 30 cm long. yfa :,n:o* lp0p2o v/velnlm0 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 charge of +40e. What is the mahqz9t1gb0 t 5*9jmb2neht ;6phlc6a,jzyp*a gnitude of the electric field at a distance of 1.0 m from the n tyb1,hlqe6zn20*9 ja *6t5m b;h9a pjht pgzcucleus?

  What are the magnitude and direction of the electric field at ajfuuvy27gvry,sjw20k x 5a 2ha77.fu distance of 1.50 m fra j f5gyus v,jhv722.r2wx yfuuka707om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a smalln+z*;q a*.yrqfauz h2 test charge. What is the magnitude of the electric field at the location of the test charr au;qzfn*h+*yq2 .azge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of jw 486f 2loxjdthe electric x dowl8j 62f4jfield?

  A 5.0-C charge is 10 m from a small test charge.yd0 ;k h +-hcv4czka txk(q-t, What is the magnitude of the force experienced by a 1.0 nC charge placet- v;zyd0h +tq4(-chca,kx kk d at the location of the test charge?

  Two point charges each have a val0hfw7vocn8 )ap :z)+j.cjphvue of 3.0 C and are separated by a distance of 4.0 m. What is the electric fiel)j7c.nh ch:vj )z+f o0v pw8apd at a 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. m3fa6o* yvl6q0 mC charge is placed at the 50 cm mark. What is the electric field 6qyvm36lf* a oat the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stio2m 9ja ht4ru5ck and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line j45 9t hrmoj2auoining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = js:q n8 .;ker 1pi.ant0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwee.kjqa8nr. npi se;t:1n them?

  Three 3.0 mC charges are at;w6pyau:jw -ea lqr (1 the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elecwpw ;(l:eu ay16 jq-artric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placmu* 78z3.1g-hxdlxixy aw kk.ed at the corners of the square as follows: +4.0 mC at (0, 31lx d8w.h gkuk*y.x7zm-aix 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 u)c,msq io+2riey-m 7is placed in a uniform electric field. What is the magnitude of ty ius7m,er+-iq moc2)his electric field?

  A particle with a charge of 4.0 mC hasdcip/ i6ej *9q 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 in3 tc;s+gfjo-m-tshxtc u 2;g/ an electric field of 6000 N/C pointing downward. Wh/g jug ;csm tc2-fx3os+t h-;tat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal t,94 qfmnagf:l is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electricn9t: gf a4,qmf field?

  A metal sphere of rad5b qe7 zs6op+aius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphe+6 ab o5sp7qzere's surface?

  A metal sphere of radius 2.0 cm carries a charge oev0gmgc3xt c ai3(8em7,4re ef 3.0 mC. What is the electric field 6.0 cm from the center of theae e3 ,m34em8 xtrg(7v0gccie sphere?