State the law of conservation of electric dk.8b m hg1pq8gz5u5pcharge.

  Is it possible for two negative charges to jivk3fym89is *6fe- ot5q cs )attract each other?

  Is it possible for a positive and a negatik9ut lfb 5:wp0ve charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glas;:qz 9 ph0cgg )ficm/x ldc8u3s rod acquires a positive charge and 9mzcg xhd)/q0pc 8fl:3cg u ;ithe silk

  A proton carries a

  The model of the atom shows ah(z4/zne0 j(kd i0hdwo7.icu

  A neutral atom always h57ah ,olm axi:as

  An atom has more electrons than proup16zse:.r e4zymef 3 tons. The atom is

  Materials in which the eln6sbp xxeo+ zae;7r3v/ksp(n2 5:cx fectrons are bound very tightly to the nuclei are referreb;srpa(+eo nxvxf6/7kn 3z 5 :x csep2d to as

  Materials in which the electrons are bound very loosely to the nuclei an/3l4yhcw )vdc;6n:ue zgg fl:d can move abw lnh6c/ez g yu)34 dg:lvc:f;out freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged. z0/5pg0bj c5 zoenpa metal bar. The end of the meoc0ap.p/5z5 ngj z b0etal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and)m6)jwuujgd 2sd-n/ n sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Wh-) gsuj6/ )mnnuj d2dwich statement is correct?

  How can a negatively charged rod charge an electrouh6xu( eh+(csscope positively?

  An originally neutral electroscope is briefly touched n(vf g6oj*/ k2+h ap;fsl4podwith a positively charged glass rod. Theo d phao6/jf 42kvs+*;n f(lgp electroscope

  An originally neutral electroscope is grounded briefly whi2obr.f-e )og;.nuh otle a positively charged glass rod ih. orfot2e -ugn).ob ;s held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, az:il *9)tz .lusgmgc+nd the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the le).:il+ mtcz9lu* ggszaves?

  A large negatively charged object is placed o 2dv olaqz 8;d* dkevn4//lu1sn 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*1nqk e luz2vvlods;4 8 /dda/ 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 the final charge on each ball?

  Charge is

  What are the units of th )-86et;ul 3wc0p1ejm.b+m qhw,o f1jr qugoie Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects areqmm3/mf9f65tg 5ewf: kbdt7 p separated by a distance d. The first charge is larger in magn6wf57emtfp b mdg 5kmf3:t9/qitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They arebejp:c+7 d1a 3 p glyd8+jl-o0lxjzpx(dl* *b placed near each other on an insulated table. Which statement best deo-lelaj +ppx* dd( gbxyd bj10:jll p*83+7zcscribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If thz/s6nn6uu k6c e charges on both objects are doubled with no change in separation, the force between tuk z6cs nnu6/6hem

  Two charges are separated by a distance d an2almw g crbr0 hz7)82e fhm;*rd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d 2) 2zwa8rgmh7*rrlemhc0 f ;b/3, what are the new mutual forces?

  Two charged objects attract eacp3th * b(8kfwf8 wugsed4)sn8h 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 between their centers is reduced to one-fourth itsss)whw n4*(db 8fgu8 3t8ep kf original value? The force is now equal to

  An electron and a proton are separated byn1vef ,6tu* uy a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electronv6 1, yfeutu*n is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to pi*/wogrdr su 2jf* 1h5bq4;5g qr:i .fa0ufrthe pr2qg rurffq.5bor/ d*4 w* 5jug:1si ;hiaf0magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated bf:nu9-ybd,etg0 kp3q y a distance 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 k, fu3q0de-:gn bypt 9proton?

  A point charge of +Q is placed at the cech)o krzp91 z*nter 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 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 ch 1)hz*zrcp ok9arge at the center of the square?

  A point charge of +Q is placed at the centro o8i+cep4*zj5nfto8)fkc6 dqid 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. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed afj8 +4nec6d * ipocq)kz58tf ot one of the other vertices?

  Which of the following is not a 0bo 4pzc l7ydsi:p7us/- sbv6o/rp z. vector?

  At twice the distance from a point chargro*i3o0pnjts;9 bj t. e, the strength of the electric field

  Is it possible to have a zero electric field vll iuk,*. 1 wczo(eg u7(osb+ialue between a negative and positive charge ku7 *w.+(u,o( lcisbgiolz1e along the line joining the two charges?

  Is it possible to have a zero electric field value between two positik2opydp8,ib+sl 4w 4hve charges along the line j 8bhwpp4d +,kysl4i2ooining the two charges?

  Electric field lines near ptn ,nsihj m e--b*)ck7sitive point charges

  The electric field shownsd5a9x+g qb- ees a6m(

  Can electric field lines intersec*ki9 4hx nz1y b1iy+omk-;rbot in free space?

  A solid block of metal in electrostatic equilibrium is placed iuqpi;:i 03vlg n a uniform electric field. Give a statement concerpuv g ;qiil0:3ning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ab tfh 7ho8,yqa)rt:i (re each given the same charge, the electric field (E) midway between the ,h8qr7aiy( :oht bft)center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where tnu)rmf m)1 92j.umrd a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfar)jrtn.d) u9mm uf2m1ce?

  If a conductor is in electrostatic equix y) 4rd;h+uczlibrium near an electric charge

  A positive point charge is enclosed in a hollow megynv/o :lx;ed mzx+ ;6m:9:to ip gqs,tallic sphere that is grounded. As compared to the case without the hollow sphere, the electric ;qg+6 spx,n:v;l:: tog/ 9y doxim emzfield at a point directly above the hollow sphere has

State three properties of cok( r4bh3f;r7o4g 8;gxsmbcbdnductors in static equilibrium.

State Gauss's law.

  The charge carried by one elect1wv 1a6 b0ztkjl q u)tm5j+r(fron 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 iicy.-fdozf)pq eq,) 2vx:8 qpav;5n of +2.00 mC. How many more protons than electrons does this piece of plastic have)x q:qp82.)vve,5a f;yp nf-dqic izo ?

  What is the charge on 1 kg of c6dd 9lieh8/ r :f+,dywbmjo;protons?

  An atomic nucleus has a chayoe/6 mp:ty 0hrge 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 cmb m1o.t:cn jx-, have charge values of 2.0 and -4.0 mC, respectively. Whab-cx :nm.1tj ot is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secoq l4dpa sh +-)xytv32bnd charge, and the force between them is 1.0 N. What is the magnitude of the h x+tdy p v3lab2-s4q)second charge?

  Two 1.0-C charges have amu-e)8dk f2b dc 3mk dmeb6q7tj:4+ ce force between them of 1.0 N. How far apart are they?

  The force between a x7fnvgx -dtg-64dhey6 .e1 rgmd 6 uq:$30 \; mC$ 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 : :xw)j3 qycnzk- zb:sforce. If they are moved to a new separation of 8.0 cm, what is the electric force bet:x ):-yc:bkz njqsw3 zween them?

  Three identical poinbqk;lz u: hjn6z+/fgouk5r: e4bq * y1t charges of 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 4fqbz+ru gozh;y* b/ 6 1::un l5kjeqkthe 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 placed on the g) ghwg9 j:*fypt.6 58kk/izccdz0k dx-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, adfw/9g8h5 *)d0ktc6g jkgz .:iyckzpnd +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 the following positions: Q1 = 2.00 mC at;7jma *z4hbv ndmu-0d x = 1.00 m; Q2 = 3.00 mC74-mmdv h n*j;z 0duba at x = 0; Q3 = -5.00 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 placed at the center of h(a mxc0 az*xi 81lig+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 8z1+mix lgca0(x h* aithe 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); Q3 = 5.0 nC is e)g g +ydxxnfa-h*+f/ at (0, 0). What is the+xf)+ y fagxe- /ghd*n 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 = 5ae;gwg x *x 43nuqb89q.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?;uxb9 *q 4egq3gwxn8a

  Three identical charges of 306 gx-.tub jtc.0 mC are placed at the vertices of an equilateral triangle wh0 x u.cgjbt-6tich measures 30 cm 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 separm4r(u1shd8eirf 7;y m ated by 3.0 m. At what point, on a line between the two charges 4idsrey7f( 1 m8;ruhm, 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 5 yz55+u yf8c0nzs a0,djcgcl.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so thefg lyuyns,5za z0j0cc 8+ 55dc net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a(+vi q s 0l6emw/uqlj0t x = 2a. Where can a third positive cha u(6lq+j 0ves0qlm/i wrge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3i3 r; 6+ie0ylok3gxv;r-l h+(h blmjj.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 u)5pz1i3vy ibe ebof(:b:.u l zp against the force of gravity by the attraction of a fixed proton so y1fli:ibz)( vezp b5eb:u 3.ome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a clv3f ,+wvcrp0zr0 ;hiunxlk15x0ws06 v1iy eommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until tle+yw0h 6zr lvw;vcfrp1305kuxvi01x, ni s 0he angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wkr)4il2rmnf pp0y +*urn9 k3ahat is the magnitude of the electric field at a distance of 1.0 m fro+f*30limk)p kn9y2r an4pu rrm the nucleus?

  What are the magnitude and direction of the electric field at a dijy oe2jf 1s,oohv- 3a7)ssr) rstance of 1.50 m from a 50.0-nC charge?2a)s1ve)h of jj,7 s3oorr-ys

  A 5.0-C charge is 10 m from a small test charge.zn6zaj(y v;pnfsvpu( 8y5k +0 What is the magnitude of the electric finy 6nzv(pfp 5+8ju0yk (sz;vaeld at the location of the test charge?

  A 5.0-C charge is 10 m fro g f3z3s1tv:brm a small test charge. What is the direction of the elect13t3g:zbsf vrric field?

  A 5.0-C charge is 10fa /vzz15- uxgk8y(ite j -mj2 m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placi ez v/j-zk8 ya(t51-g2ujxfmed at the location of the test charge?

  Two point charges each have a valj .6n92myhl2;nydyfs bpf 9t7/hx8 jp; bc*y aue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poinnyy/pj m9f hct;2a7 8dfjps2;n. h b6xy byl9*t midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 uf: , +yjkvul82jl(iniz 1rn*mC charge is placed at the 50 cm mark. What i2fk:lu1 +yi8jj*vl nn iu r,z(s the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm .f1d d6m++s.vrn opfb mark of a meter stick and a -4.0 mC charge is placed a+o msn.fr6p1. dvdb+ft 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 and -7.0 mC are placed at x = 0 and x = 0.201avyqrr nudn7 (0qi 6( m. What is the magnitude of the elecr( a 0r(6d7unn i1yvqqtric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidey4.z12nogamj 4lqr1 l 0.50 m. The last corner is occupied by l1qn4g12my.jro4l zaa -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is jy;wx/kv j3i wv0o9 5i1.0 m on a side. Charges are placed at the corners of the square as follvvi 30xj;wj iow5/9y kows: +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 placed ic)gq; aee4h1 bt0sr g/n a uniform electric field. What is the magnitude of this e )se0ht1qra;e/ cggb4lectric field?

  A particle with a charge of u eri)ry5yii+1jj;dekh8a4 , 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 i vwpn 7h95k s/qyf*hn9n an electric field of 6000 N/C pointing downwah9ky h*9n/sq7v 5nwpfrd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries jf-ii4bj we):rw0imx5 y7wa0 a charge of -2.00 nC. The ball is placed inside a uniform electric ja:4iwei)y wi7x mr-50jbw0 ffield, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm e48dz 81/av/xbrfr chcarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacacr8ex//rb h zv84f 1de?

  A metal sphere of radius 2.0 cm carries a charge8;vkh 89; k2(rpid ejohucu0t of 3.0 mC. What is the electric field 6.0 cm from the9ku88hep;cj 0k2uvt; hio r( d center of the sphere?