State the law of conservatiizau yit.yp )3h gq kja(qp+/c2:yy11on of electric charge.

  Is it possible for two negative charge-qvw yo. si+x::zc i6 wo2;0ly :wrdgis to attract each other?

  Is it possible for a positive and a ne5:9pchbn6o0odw u7u d4wt9us 1o f5dr8xfez5 gative charge to attract each other?

  A glass rod is rubbed *5 zydi7l 7 v en;f8gxe uvrhy)ki+r):with a piece of silk. During the process the glass rod acquires a positive charge and the siki5ir +:e*yd 7)v7n 8zxl)euh ;ygfrvlk

  A proton carries a

  The model of the atom s+ t6 9(qtwkr+x m6uk xqc*fwu:hows a

  A neutral atom alwayd 3l;eb*c l/v3 dpp:ibvhf8yt8r . *sbs has

  An atom has more electrons than protons.b, wcq(gf. +ugnclbpq307 8qu The atom is

  Materials in which the d* :jyb 9hx41/:wqa:2bjc u nszl/jmjelectrons are bound very tightly to the nuclei are referred toh w dl9ujm::j:qx/zc/ aj1 *jbsy 2nb4 as

  Materials in which the electrons a(q/f49h*ykjl*v xp vjre bound very loosely to the nuclei and can move about *p x4(jl /9vkhvjqfy*freely within the material are referred to as

  A negatively charged rod is broughtv*:9gi1choms )wwo 5u near one end of an uncharged metal bar. The end of the metal bar farthestmi wwsh) ovco1u5g:9* from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Thek03tzvyas,aa m,75ooh n au 4m(u*t7sy are placed near each other on an insulated table. Sph4osy ,s t,nu oaam3uk0 a(ah 7tvzm*75ere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char cvf/vn.r:dl- (a0 w3c,oxqbcge an electroscope positively?

  An originally neutral electroscope is briefly touc wsp/f /:nufz80dmd( ck3a3cthed with a positively charged glass cd3 mf3ndzt/c/ wkp(8s au0: frod. The electroscope

  An originally neutral electroscope is grounded briefly while a posi7 ,kk xkf7nxm 8r;kr+ptively charged glass rod is held near it. After the glass rod is removed, the r, xnrm7+xk k8f pkk;7electroscope

  A positive object touches a neutral electroscope, and tp1wfkk ( lx.7oi 5x0qphe leaves separate. Then a negative object is brought ne 0.iq1wo (klxfp5x kp7ar the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatj) l :wdho4k3nv z/f2sed 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 rol3s h w/do2kzln)jf:4v ls 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 the1v wwxz o/7. gcb5ote9 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated bypjg :y8jrq6 )x(vr5pn7/e zcq a distance d. The first charge is larger in magnitude than the second chq6/:5grx pr()jy8jnp zev cq 7arge.

  Sphere A carries a net charge and sphere B is neutral. They are placed iwo2o.v9w (om near each other on an insulated table. Which statement best describes the w9.o(i2ovmo welectrostatic force between them?

  Two charged objects attract each other with a ce ilzj*.+ bna:r b4kpn3rtain force. If the charges on both objects are doubled with no change in separation, the for3b zr a:pnjn+*4.lkib ce between them

  Two charges are separated by a distance d a01uji+wkx4+wpvk9b-1 qyb f end exert mutual attractive forces of F on each other-bv9qjx +py kb +we 1iuf01wk4. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whh859d(xwykcmy d9 ds fi+:a9,gd z.qnat happens to the force between them if one charge is doubled, the other charge is tria 9 d xgynz:d(d+cw,qs.9ih58 dm9kyfpled, 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 proton are separated by a distance of 1.0 m. What 6t1jo+ j+vw7 cs qut3lhappens to the magnitude of the force on the proton if a second electron is placed next to the first electuql j w +tcj+31osv6t7ron?

  An electron and a proton are separated mod(7+lqiws5 by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elect7wqd 5 (smoil+ron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m zma9 2e9c6p7ka2 efma. What happens to the size of the force on the proton if the electron is moved 0.50 m closer toe9makazmc 9 6ae2fp 72 the proton?

  A point charge of +Q is plz2 k.zpt- d4wraced 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 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 z4t.k2zpr-w dof 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 9bw7 0iwcp(zh an equilateral triangle. When a second charge of +Q is placed at on9p0chi w( bw7ze 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 at one of the other vertices?

  Which of the following is notrfu o +p.r9yb7 a vector?

  At twice the distance from a point chj st/:,xe k qe.apz.0oarge, the strength of the electric field

  Is it possible to have a zero electric field valus j6;hyxyf8q)mvy,; g e between a negative and positive charge along the line joining the two char hys;yfvxy ,;q8m) jg6ges?

  Is it possible to have a zero electric5 fvwstf4 pxv ;3hqj68 field value between two positive charges along5svvfx3t qp;f6 8wjh 4 the line joining the two charges?

  Electric field lines near psitive point c koum8rzi0gbvs)03+h 3wbyc ((0at7pnks3v gharges

  The electric field shr:ji 0up tef 59k;d*m,rc2jo bown

  Can electric field lines intersect in freexady6vk *d(m h*sd): s space?

  A solid block of metal in electrostatic equilibbh tv 1anm vgoreb - vy4rj+ylt)97r+ca.1)2prium is placed in a uniform electric field. Give a statement concerning the c4n1-jvryr +lebg r9y)thv.1+vp7)mab2 o atelectric field in the block's interior.

  If a solid metal sphere and a hollow metav1 hob teian9ro7; /v1l sphere of equal diameters are each given the same charge, the electric field (E) mer n;9o 1bav/71hit voidway between the center and the surface is

  A cubic block of alumingiu8)+)utx y)s qn7un f.+nrcum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's toinu nny8 +xg .c)usfr)qut) 7+p surface?

  If a conductor is in electrostatic equilibriums/7b:lc)nns d near an electric charge

  A positive point charge is enclosez6ntyk wtvbez8vy1 4w -0*)*yd8bxnx d in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly-t t z6wx*0evyvwbxnzy4)8bnk* dy 18 above the hollow sphere has

State three properties of conductors in s-(p( anldde 2rtatic equilibrium.

State Gauss's law.

  The charge carried by one electron v twxg.,;jjqo5 .2zqq),tvgk 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 hasty v,1 m- u,gmj;i 3yl qfm9j.i+w(jhc a net charge of +2.00 mC. How many more protons than electrons does this piece of plastic haj,t.jq(,v3 iw9l m1c-;u+gjmfm yh iyve?

  What is the charge on 1 kg ofezfvvl 6p(- ze gxi5v7e,l1 3f protons?

  An atomic nucleus hal6iqu h (s(fu6s a 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 values of 2.0 a( itaensxh42 7i4* +:6 bvfug0c-qrd swj;o uand -4.0 mC, respectively. What is the magnitude of the electric force between ut+i2bc:h0a-j4n*sa;d sx 64q (reofvi7 ugwthem?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 n2yl5del2 t-av qjv4;w; r5 zhN. What is thvaz;d5 ;n4lrqt j2 ehy5l2vw -e magnitude of the second charge?

  Two 1.0-C charges have a force between themzfymc ,6 w2wh, of 1.0 N. How far apart are they?

  The force between a sp h-) iu(nv)m$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ia;* (a yhj(acxnitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between t*xya; ( (acahjhem?

  Three identical point charges of 2.0 mC are p6yuek.47 zdh 7yuku9c laced on the x-axis. The first charge is at the origin, the second ze7yy4u9c.k 6hd uu7k 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 the origin?

  Three point charges are placed on the x-a3 ppntzfdm/+ ;xis. 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 mark. What are the magn d+fn/3; zppmtitude 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 (xu/ txc2v2wh.00 mC at x = 1.00 m; Q2 = 3.00 mC at2 vhc2x( /xuwt 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 plcfvp*glgs aalyq7 0u bl4 j3j:,4q 7n1aced 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 cen4 ,j*l: npfl3ulscjqy 0 q1 47vbg7agater 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 ik*x v-u:0pslx s atvus:x k*l-xp 0 (0, 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 jz8, banh9euti -1x k1e30rz ngf av:5at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forkuhz 3n8ate 1 1:gb,9vz0axf-irj e5nce on the 5.0 nC charge?

  Three identical charges of e6u7gpp a61 qv).sd .dwceng9qqw(e0 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. Wha6. 1pw7gde 6u)(a.qn v9qqpw0d gs ecet is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges omd8nw mx5cc84r,mhi. x skr8 +f +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to pl54i khx rnc8 8cmdmxr,8 .+swmace 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 at x = 4.0 m. .pd/*.th2zs7 w 2mhrp;t +nylxhk+gt .laie/ Where on the x-axis can a third charge be placed so the net force on it istz2y hk. ex .t*2gs;walt7hl+pr/n i.mh+/ dp zero?

  Charge +2q is placed at the origin and nyusw)u45 ys:r no7z9charge -q is placed at x = 2a. Where can a third positive cyrzu)ss:o7y 5 9 wnnu4harge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total ofv-u 4bd) y;myvgs7kw4 $4.0 \times 10^{12} \; electrons$ 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 ofefvk ,+a 3tr .cvxr+p4n ddx6o5 0nn/u gravity by the attraction of a fixed proton some distance abonn40r r+e/+o xd3.,6c fp5v vnxudatkve it. How far above the electron is the proton?

  Two 0.20-g metal spheres are i0ar6 ovn+mnlx-q bwn) :gbcl ,74v/d hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the amqvocd: nn0+ gxli-n4w r)l/v7,b b6 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 magnitude of the electrde,nankrf.iva 4 ;9y3ic field at a distance of 1.0 m from the 9dr ava3ykni; f.4, ennucleus?

  What are the magnitude and direction of 7fnkx(l n ,tacoe6oljx -)q1/dy)wm, the electric field at a distance of 1.50 m from a 50ta cw(j,71nf)y e/o,-nqom6kxdl xl).0-nC charge?

  A 5.0-C charge is 10 m from a small testblrc-7i, wa2z x.tp*o charge. What is the magnitude of the electric fiet*raw.72pzl-,oib x cld 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 lnpo)x2 hg qc1g96 y h(y-2boythe electric fie hycx oglnogq )yp962b(y2h- 1ld?

  A 5.0-C charge is 10 m from a small test charge.)*kbllf;mde1v+i- n l What is the magnitude of the force experienced *)nlemb+;fi d1-vkllby a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a 1cg (ylbpd1a iz+8z5i value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fiel lydib(iz51g 1c+zp8a d at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ah* sickuvir:5z)hs/)3 c5yyy nd a -4.0 mC charge is placed at the 50 cm mark. ih*ihsr5 yv ksy:zc5))c3/uy What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed zhvb;;w 2dj+vat the 0 cm 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 two charges hb2jw;v;d + vzis the electric field zero?

  Two point charges of +3.due nci /.:mb50 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the mag: eic.db5n/umnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squar-rqa:y+kpi1w icuj 2/ e of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the ewqiju crp-2 : /1ia+yklectric field at the center of the square.

  Consider a square which is 1.0 m on a m ra/tz/cun/ivhe7 ad .3p8u1side. 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); -3m 1 e7c/pn huz3 rt./v8duaai/.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 in a uuhv.+ (b pdjb:niform electric field. What is the magnitudu h.pdb (:+vbje of this electric field?

  A particle with a charge of 4.0 mC has a m if:t +*s/c4ltqansr.ass 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 v.qq0 snpq4; p.9htd pis placed in an electric field of 6000 N/C pointing downward. What charg ;pqq0v.9t.npph sd4q e 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.x s5plqp//2ek The ball is placed inside a uniform electric field, and is suspended against the force of gravit/ 5xkqslep /p2y. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a char ap.t.4hl-so jtt.as7 ge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphersh4j.. ta-a p7ost.tle's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3. *wgdv p+g+9tq0 mC. What is the electric fiw+*+p g9dvqgt eld 6.0 cm from the center of the sphere?