State the law of conservation of electric charg9lr 5v/mxe* vk bap7y+e.

  Is it possible for two negative charges kesh;8 (s1kbl+6g7 toqtb b.nto attract each other?

  Is it possible for a positive and a negative charge to attract(bi nz tb fh:jn/91/ap each other?

  A glass rod is rubbed with a piece o am9oa-dl:8ug :1z 9wquuq lcs-uhf+4f silk. During the process the glass rod acquires a positive char + -gwullcq8 9f:ud1 qza4ha-s:9ouumge and the silk

  A proton carries a

  The model of the atom shob8rv78/-hiwvn: g-vv wq ,jbrws a

  A neutral atom always . vt 5,-whcrlid,1zvehas

  An atom has more electrons than protons. The atom,wc, 3n wffi;j is

  Materials in which the electrons are bound very tightly to the n/f)ij:24wvjp gb)7okp z l ki4uclei are referrk 4z:2 jip)4pi/gvkw bjo7 )lfed to as

  Materials in which the electrons are bound very looselypke:alh- f q15nd jfvc 5 p4+129lbzqv to the nuclei and can move about freely within the material are referre zvpn 1d5ljv24qckfe1af5p-9lhqb: + d to as

  A negatively charged rod is brought near one end of an uncharged metal barw c.pw(dgjn l6-2t-x r. The end of the metal bar farthest from the c.6- gct-2xwl(jw n rpdharged rod will be charged

  Sphere A carries a net positive charge, and se5e 8w 3xpi f jw*+6th+ycenw1phere 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 statemen+ph8 3eew6jnic+ weft5y1* wxt is correct?

  How can a negatively charged rod charg(k6 o5 4oej o0t,0m flyenxm(ye an electroscope positively?

  An originally neutral electroscop8di.*,vmemr;d x 0dhe e is briefly touched with a positively charged glass rod. The ele*0e .hr mx;m8de,id vdctroscope

  An originally neutral electroscope is grounduy 8i b.wycg7;ed briefly while a positively charged glass rod is held near it. After the glass rod w8 ib7.cug;yyis removed, the electroscope

  A positive object touches a neutralmznh pz)d(y0-kw(, p3dgtrti e);3eg electroscope, and the leaves separate. Then a negative object is br;eg n( d)3tdppw0g)(t-z e3 ykm, rizhought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed onhtb 6vn//j7u a an 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 negative object. aj/hu6 7n vbt/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 Coulo+3 eqhvksj 9v)mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancee r lu-lei9t+0 d. The first charge is larger in magnitudei 9eu le-r+l0t than the second charge.

  Sphere A carries a net charge and spher yfdw a-oj9.8ce B is neutral. They are placed near each other on an insulated table. Which statement 9df-o. y cjaw8best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on v s/oyuy-mc.abb47 0gboth objects are doubled with no change in separation, the force between the-/ v0c myga.ubo 4ys7bm

  Two charges are separated by a distance d and exert mutual attractive *y)d yyw tg53cforces of F on each other. If the charges are separated by a distan3yd gy5)ty* cwce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hw+lr 8. rv1spu1og mqjtgd3 ;0appens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its originsq g80vr.1 pg1wm+rojl;3td u al value? The force is now equal to

  An electron and a proton are separated by a /r1aat4 - qwucshnf7 :distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first eus:t r hcw/41a-nqfa7lectron?

  An electron and a proton are separated by a distance of 1.0 m. What poxn3b +( uu);howmjv 0,o0te happens to the magnitude of the force on the first electron if a second electron is placed next to u) b xwmh,3vo0+opjtu(ne0;o the proton?

  An electron and a proton are se/u- x3sq)*glca 5iv7bt: bi juparated by a distance of 1.0 m. What happens to the size of the f)cu7 -sjgiqi* b:/ ax5lb 3uvtorce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of aig:7( -tm myhmx1 3jab square. When a second point charge of -Qtm(7-mia j:m3yg b h1x 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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is plackud q, nr9*(vred at 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. Wh*rq9r k(, vudnat is the 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 j c::8pnm56cfz qr ebk)lz4x 9is not a vector?

  At twice the distance from a point charge, the strength of ucb70 /as 2p4gdvkj 6bthe electric field

  Is it possible to have a zero elec;2lxig, ra t2 icfu7y)tric field value between a negative and positive charge along the line joining the twoi) ut cyg7,lx r;2fa2i charges?

  Is it possible to have a zero electric field value bidp2zyu/mgikk +xk 8aa)f :6 /etween two positive charges along the line joinid pif/) kag+:2ai 6ym/k8zkxung the two charges?

  Electric field lines near psitive point ch42ikb35lwgi a arges

  The electric field showeytg+;ms- ie* n

  Can electric field lines intersect in free on bi*84.;s bhwd ke(ospace?

  A solid block of metal in elec;0wxsf 5pk eysak17b8;b/fcctrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric f wyc1;b s;/f k750ce8bpkfsxaield in the block's interior.

  If a solid metal sphere and a hollow metal spherk ,j+ 4lbk1i:uytnr7p e of equal diameters are each given the same charge, the electr kj71 ibu t,4p:+rnlykic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a 67bzope4ci prv72sg -dqe, 8zregion where a uniform electric field is directed stra84 2ed7iv6er7,g zczpq-bospight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilxaccsq-l 9 h9r9n v;k4ibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sp0)j: a ke 1.)nmp3bycwuv0yzk here that is grounded. As compared to the case without the hollow sphere, the electric field at a poin.)y 3z :1ekjypw0uack)b vnm0 t directly above the hollow sphere has

State three properties of conductors in static equily/ l3g*dor.v;e uy,yj 9o8xf eibrium.

State Gauss's law.

  The charge carried by one elect ;,((a ukr(m wiq/og fg;e2ehfron 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 ne8blk7 msxpx )6c e3ku0t charge of +2.00 mC. How many more protons than electronsue8sk)6bpc37 m k0 xlx does this piece of plastic have?

  What is the charge on 1 kg of protons? n; dj:.zmxak7 ka3rq/

  An atomic nucleus has ae/zlxkgbz7x6.vak6df;: c * u 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 charge l/0p i /ssgb n+pknh-.values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between li /knn. hg+ -bsp/p0sthem?

  A 1.0-C charge is 15 m from 5 p7(ymdumqru/ mtq.3rb-yi e9v64()mqcezi a second charge, and the force between them is 1.0 N. What is the magni 6d zqt7v(m9m/rqm.uiybye r 3(p mq4e -cu5i)tude of the second charge?

  Two 1.0-C charges have a force yp1ax7zu d3/e between them of 1.0 N. How far apart are they?

  The force between a z1-6wc0sl0bzz23u;cp p ,sq 1kgoklb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,7c e99r 2+m, ulyvq43sktcchb experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is b4 cmu9keqtsly7+c3h, v2 9rcthe electric force between them?

  Three identical point charges of 2.0 mC are placed p*ix*ouwl 91tg/ :sr ron 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 magirx*:tu9owp1 l* gs r/nitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge oq9kx0m4elbx/2h.3z 0kj f5.scx 8grntsbv +y f +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 artbh+9vxbzn/4rlx 8mey3q0gx2ss. k fcj .05ke the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are2 i5x4bwq;bfu located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x wbui 5 xqb42;f= -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is pla6k2y 8f demxyy91up)dced 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 thirym9dydu 8)xpk6e2 1fy d 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 .l.vpnb:e-b j ka7k ,lm); Q3 = 5.0 nC is at (0, b a7j ..lnvlekp:k-b ,0). What 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.jy7f +6unqwb oa ,k )m24d8rg0rmea1c0 nC is at (0, 0). What is the direc+2,e no)j8 6fq4m kmwayrgacd01ur7b tion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatetc()x edhprg*/ .c /5bz ,dmrbral triangle which measures 30 cm on a side. What is the magnitude om*h)z dr 5 r.cxg/d btpb/(ce,f the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sps 0jj.1 w5 qev 1as0 n;,vqany82edmdeparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q sucp;a1jq2n8nvsedqvda0,. 051e y smwjh that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0sw/;u7ade dk(-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it isakdw;ds 7/(ue zero?

  Charge +2q is placed at the origwi 5e2sv:hyqo rqj/ ae85,0 lsin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so th/jeeaq s2syrv8oi:5w h,5 0lqat the force on it is zero?

  A copper penny has a mass of8 r,kw .u5qtnh 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 agai)2iv3xb-t5scmmi m i.ae, 1qx nst the force of gravity by the attraction of a fixed prscmvax i13).-2m qem i,xb5itoton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point brfj uo;;sv t:;y nonconducting threads which are 30 cm long:fv u;; ;otjrs. 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 fwri2 r yimd3vpni,fv j.0g c q/6e9r5xa r*12+40e. What is the magnitude of the electric field at a distance er im0 rxan,w*ri/.f52jc 96vvpfr2 diq1gy3of 1.0 m from the nucleus?

  What are the magnitu4bd:m3xo6os n +njp1mde and direction of the electric field at a distance of 1.50 +s n xbo1jnmpm43od:6m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test cha l/ g/li 2qdx i-f/h/fzv-rnz.rge. What is the magnitude of the electric2 zh /gx /f/qln/id -.lzivfr- field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of theiedg(4ui )yh6 electric fieldgi4y 6eh)di(u ?

  A 5.0-C charge is 10 ma3j(e,c9f pkm from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the jk9m3pe( a f,ctest charge?

  Two point charges each have a value of 3.0 C and are separated by a distanc1t2m ajvxq5,*l i fk 0w ;:kx7s3ocvzbe of 4.0 m. What is the electric field at a point mkjw2 01k3z*voi5 qx:b7mtclf sa ;x,vidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4+q s 7*ji(irrz.0 mC charge is placed at rjsz+ *r(qi7i 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 dzla .h6;ql 2jg35q wta meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a lineg.alqdlqtj z53 h2;6w 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 = v:t d* 1e 7/jami mb/vf81cwzz0.20 m. What is the magnitude of the electric field at the dtz7/ijav/ez*wcm8 :mf 1b 1vpoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. bdvzvr2 0f+e hrut aef69q97t.c0z( t The last corner is occupif+2av9z(c9r0rvd. 6beutzt fqh70e t 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 side. Charges are place 6f62h29tf/6 js xsk5mjie9s ou (fxisd at the corners o6s5i26m6t k(fxs j f hs jfso/9x9ei2uf 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 the square's center?

  A force of 10 N acts on a charge of 5.0r gggp )e-+,ym ri,-x ypbjp(, mC when it is placed in a uniform electric field. What is the magnitude of this eb)ep- (,rgiyp r ,pg, -gx+mjylectric field?

  A particle with a cha, 1tt xvz9 ;ayvt1m4skrge 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 electric fbbts/r7ux)w x 4aa.r; z6 i+djield of 6000 N/C pointing downward. What charge must be placed on tjbu4a7x. x ba/s 6t zw;)rird+he ball for it to be suspended?

  A foam ball of mass 0.150 g carries a dttbzg.lbmz:+-pa:mg g a w6- 4zz-0fcharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. 0- :zw6tbza+: mzdgb4ggf.-ml azt -pWhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 h;ph m0:ykr7h mC. What is the magnitude of the electric field 5.0 cm from the sphere's suhy0 7; hpkrmh:rface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What imj;/ag-eiv 2e s the electric field -a2;eivmje/ g 6.0 cm from the center of the sphere?