State the law of conservation of electric chabdc06:aosg q:rge.

  Is it possible for two negative charges to attract each-i ehyvc9 :a*:97gkvrn)jdcgb ;wpc) other?

  Is it possible for a pi0ip x*(9h4vcv q sp*xositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod fph5lp.i( n,yg/ q)efacquires a)/fflhgqn p(,iey 5p. positive charge and the silk

  A proton carries a

  The model of the atom shynisb/0 7de(8m4fllbjy cf3kg0b . ,q ows a

  A neutral atom always hz 1dsqe*-6uhx :r d1jhas

  An atom has more electromk)b+ 59czy w/a(hqk lns than protons. The atom is

  Materials in which the electrons are bound ver crhur)s9b-8 ax0zu0t; l6drmy tightly to the nuclei are referred z0l -rhcr;) b9tsm ra x8uu6d0to as

  Materials in which the electrons are bound very loo /qiitm8z ;s:gsely to the nuclei and can move about freely within the material are referre sgt/iz mqi:8;d to as

  A negatively charged rod is brought near one end of an uncharged metal bar. gil76 ber1r)e The end of the metal bar farthest from the charged 1i)r6r7geb lerod will be charged

  Sphere A carries a net positive charge, and sphere B,bhmi*;5 n p4xmnrh ,t is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement isx,n 5hn*b,4; mmhpti r correct?

  How can a negatively charge6gwp9 sk7s bu5yep2t4d rod charge an electroscope positively?

  An originally neutral electroscope is briefly to x-tf9y rdrnz1se h 4:ehw7(x2uched with a positively charged glass rod. T1h -ehne xdw4frzx2:s79t y (rhe electroscope

  An originally neutral electroscope is grounded briefly while a positivg :t4awys1 ) 4ndajdwlfyf 6-44ce pw3xd8 ol5ely charged glass rod is held near it. After the glass rod is removed, thxac4dowa:48 -lwdn jwlf4yp1 3sg ty5d4f)e 6e electroscope

  A positive object touches a neutral electroscope, and the leam: sk*n9e- 7v.gpd0 ibqbi )kgves separate. Then a negative object is brought near the electroscope, but does not t:psg 7ve.9bndq m-gb0kk )i i*ouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neut56-dy3p+wf-gwfc xg.u5nd exral 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 negative object. What is t 5w 3.-ed6f ypgxfn5u +wx-dcghe final charge on each ball?

  Charge is

  What are the units of the C:och/us4/ bd6sg* hxum1g ti-oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatedf/q3.+evse iwa4rtw0 by a distance d. The first charge is larger in magnit3 srt/w.4va0 qefe wi+ude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Thej/cyec5b kaem)+ q8zu *x 18ely are placed near each other on an insulated table. Which statement best describes the electrostatic force e1 azccx8qj5 b)8 +emeuy*lk/ between them?

  Two charged objects attract each other with a certain force. 2zjr+puvcp(, lh6;t lIf the charges on both objects are doubled with no change in separation, the fop rll6up(;+vch, 2jtzrce between them

  Two charges are separatedk- gztan5a/ a2 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, wtaa /z-ng k5a2hat are the new mutual forces?

  Two charged objects attract each other cvmqskd0/ l 6;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 between their centers is reduced to one-fourth its original value? The force isd /;c6svqkl0 m now equal to

  An electron and a proton are separated by a distance y-,m)phivofd) o51ga (mwn6r of 1.0 m. What happens to the magnitude of the force on the proton if v16 pmo d)io hy5(w-gnr,fa )ma second electron is placed next to the first electron?

  An electron and a proton are seo 1kkysz9 -i-pcf:9eb ds rk94parated by a distance of 1.0 m. What happens to t9kr kb9-- f4ys1di9 ospkcez :he magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens tjvng u zt:*l e tzbwk1bifg/995g7(+u o the 9jn5ut9f /kz g i1gb etlz(w:u7+vb*g size of the force 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 a square. When h4/(q,jxf os9+nyumia 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 squarxu9oj,msqi( + hnf/y 4e'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 eae5.h+n usqi*iz -yz ;quilateral 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 acts on the center charge due to a third charge of +Q placey;i+.h 5qzi*nz- u aesd at one of the other vertices?

  Which of the following c b9zd/2z,d mtoz10otgbx*1 g is not a vector?

  At twice the distance from a point charge, the strength of the electrd +qa //f:vctto7w vi* ;b0ocqd)n6 v7(byx fpic field

  Is it possible to have a zero electric field value bety;o/gq (;bpe bar4d 4 dumcis4ulw+/,ween a negative and positive cha4;wq;4d,uy/+e(b s ldimcgapr ou b/4 rge along the line joining the two charges?

  Is it possible to have a zero elnmkn) 3*w aob6ectric field value between two positive charges along the line joining the two6b )a w3mnnok* charges?

  Electric field lines near 0ng1jq88s nm2 2 k 1cfkz.avj8-iyzgspsitive point charges

  The electric field shown lhtp(5sxmzfwp-v)mbnj(3n*9 y qj 53

  Can electric field lines intersec5pxid, fmbu7 5t in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform el3wn,9oqgb0n+/3kgu5 ql k vhhectric field. Give a statement concernhowk5qn+n 9lu/gg3q3,kb0h ving the electric field in the block's interior.

  If a solid metal sphere and a holynubpsi(v1 o wn 8iw9:x4n -u61f(tzelow metal sphere of equal diameters are each given the same charge, the electric field (iuesop:tnfxwnv4i6w89b 11 uz-y n((E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unka 1 80ivp8; wj bdifisxgw 6dd)b,op5)cd3 9tiform electric field is directed straight up d)88gv0 d oij3pcf1sbtwidw5 ax, ;k9b)id6pward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ele2y9uacd; h*rlyc 9of 2ctric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groun1 ut(;brbpxvh0v49uqqis)+hik u *w8ded. As compared to the case without theupwq4)kbq0v 9hvh(u*8 u ;ri1+itbsx hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of)16ydcz povq .9 zo/5ap ub8nj conductors in static equilibrium.

State Gauss's law.

  The charge carried by one ubz zu9 vfd9.a.y,a-ggbe1l -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 ma6sma3ssyu+ dr iw62c7 ny more protons than electrons does this piecasy23d6m6 si+ us rw7ce of plastic have?

  What is the charge on 1 kg ).4q5pylxk*qt0bi7e3e fl lkof protons?

  An atomic nucleus has a chargfio/tel7w 8-9o wslo+e 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 xcbgz or57sup9b8w;c0o4 s 3x-4.0 mC, respectivelyc ws3ox8u5bs;bp9zcorxg4 70 . 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 betwehcabgbb(s06aw;qy afk k)(i: k)0ww+ en them is 1.0 N. Whatks w fb(:qahakck6)b+w 0 g;wb)a0y( i is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of v o38u0 gl 28,3-dpn ;gdqcft u,ahitt1.0 N. How far apart are they?

  The force between a sfn/xl 3gp ):ay-hgelb 5x1-i$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially .( ,:ote.zhtf *ii eetea 3mv12.0 cm apart, experience a 1.0-N force. If they are m *(tie,oz ..afv i:3ee1ett hmoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges ,sm/)ht l:jo yof 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 magnitude and direction of the electrostatic force which acts on the charge at tyo:j)h slt,/mhe origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed a9ar 6fk6o :znnt the origin, -2.0 m C to the right at x = 50 cm,a:6orkf 9nnz6 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 the origin?

  Three point charges are located at z2 )5imt(- obhsx+wj o-ht5xw 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 = -1.00 m. What is th-iobx(w t2s5 hx+o-m 5ht )jzwe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center ofq5z2)kd2 dzig p6s 66*uzit vcm/ay+p 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 thir)qdmzg6pz +6y2szkupv2 6dt* 5/ aicid 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, 0.1,axlmdjr ):1j0 m); Q3 = 5.0 nC is at (0)jljr:x , 1mad, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3q3ftrzs5c jh2tmt- vv/b-*cj-;w ig ,0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0v fctj5;ts -32qbmh -*rtic- ,g/jwvz , 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charge (gb5mtxne+ zr+w) g 0+rg kq2eb3atb9vw2c7qs of 3.0 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 orb ( +tbq kqweeb2nvaz++m 27g3g0t)w5gcr 9xf the charges?

  Consider point charge(wv; :fbfl5s +mpoqpkjgj/ 16w9q(yls of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possik+mvp1wjpl q6ogb(jf(:y flw9 q5s; /ble 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 w:jbggsu// x+1s. mv iat x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on its.gwx1+sui bv g /:j/m is zero?

  Charge +2q is placed at the origix12) 5mh, csl:: 3gtnpvje uonn and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that t13ocstvlunn,he x: m :5 j)g2phe force on it is zero?

  A copper penny has a mass of 3.0nlav x+y 24rp6lu+01xt bl2wp 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 ot;wv gw.u; 5e l*.6 cnq;mu 8qe,dpeftf gravity by the attraction of a fixed proton some distance above it. How6,w e .;5cf.ld* u;egwp8evt;qn m qut far above the electron is the proton?

  Two 0.20-g metal spheres are hung from9gnekl x-wwhrzr ,9) ) a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unti-),gwrknw)r xez9lh 9l the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has aqre)ete 0 am* c);j7sg charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fro07ee)a s rtqm*gce;j)m the nucleus?

  What are the magnitude and direction of the electric c (. idx+i,tibc+8phxfield at a distance of 1.50 m from a 50.0-dbpih+xi.c x (ic+,8t nC charge?

  A 5.0-C charge is 10 m from a small test charge. W s k*g a-,.3kx0iblqwihat is the magnitude of the electric field at the location of the test chargeg-lx.kw,ikib 0qs3 *a?

  A 5.0-C charge is 10 m from a small test charge. What is the direction0ousb( 5s c gzld(hf86 of the electric fields8(d 6(h5uo0lz fcsbg ?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitv ;89qvmk2g6 o:le 2gzhby6wsude of the force experienced by a 1.0 nC charge placed gmv 6; :zw qyghke2b 92l8vs6oat the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by x +jka3sqfkk24tnv40e4 6 x ysa distance of 4.0 m. What is the electric field at a point midway be0qa2 3kxv jsxks4efy46+k4tn tween the two charges?

  A 5.0-mC charge is p z,eymikky b 74rp4/*elaced at the 0 cm mark of a meter stick and a -4.0 mC charge 4m4eb7ykpi,e/k zyr*is placed 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 :kfy1dhg i. 7kg xl )3z1i4ujmcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two4:1k.j 1mdi h )g3fkzy7giul x charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 akev v; g. 6xij:1up)f6muql6xnd x = 0.20 m. What is the magnitude of the electric field at the point midway betweelq6)efgmju.x;vp xu 61i v6k:n them?

  Three 3.0 mC charges are at the three corners of a square of side 0q iy-anf7y 7,k.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of tqf7akyn7,i- y he square.

  Consider a square which is 1.0 m on a side. (+.qt ,3wpbllgivd q; 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 the magnitude of the electric field at tv dgwbq+ qp l.it3(;l,he square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform elecs/ ws,6ly9y * db/pytltric field. What is th*l y //lw yy,sbd6ps9te magnitude of this electric field?

  A particle with a charge ofyjnz( ;5rrgy9 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 s;6w *qm4 x-.wvd33mhpso .uo dge1camass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for 4qm;c3umws*.vdea ph1 6xo- sd og3w.it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ba vvrm(* .nnon51vw /awk1g7cmll is placed inside a uniform electric field, and is suspended against the force of gwvo 1 cm (a./*r15vvnk7mnwngravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge al) up( -fgc:n5zadmour); 2bof +2.0 mC. What is the magnitude of f)nuao 5adlp);g (r2:zucm b- 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 e(e4s,paus hup,kx 01 electric field 6.0 cm from the center of the spher u4h,keea( ,0su xps1pe?