State the law of conservation h)aa-tkng6z/q:h ouls(:sj p)pa)7r of electric charge.

  Is it possible for two negative charges to attract er)jf9 ozy: l7zr-d 86tqdhmc/-vxx j (ach other?

  Is it possible for a positive anben d wdi03/; :/mcyhzd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. D 8 8.h e wnu0sg5bv*ymh.js k* 9syyjynr(;jz5uring the process the glass rod acquires a positive charg(*s;u 9wj .ymej8 s n5bh8.vgyzrkyy h*sjn05e and the silk

  A proton carries a

  The model of the ato-)h vfgkc+v 6lm shows a

  A neutral atom always hao9 hv,es9ac)c5g .ggu xwbt4 .s

  An atom has more electrons than protons. :zmxa 1qejb. 7 3cerjb*x/px( The atom is

  Materials in which the electrons are bound very tightly to the nuclei are ref8cglh*n;hq) qnn9 m:-n u j/mdp55ehmerred to mnm9me/nl ;g8n*)qqdpu5c jh-5:hhn as

  Materials in which the electrons are bound very loosely to the nuclei andjfu, 1g14l yxjb.cse)m3g u 1p can move about freely within,u mjglgb)xjp3sfc114u1. y e the material are referred to as

  A negatively charged rod iso nm6hpl,n,.f brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will .o fnp,,hm6 lnbe charged

  Sphere A carries a net positive 8 i+uw3ec o4uo+woi j9)2xoslcharge, and 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+ 8 c3ouueiox4wij+ s o)9wlo2. Which statement is correct?

  How can a negatively charged rod charge an electroscope posirb +1m9 oc(akxtively?

  An originally neutral electroscope is briefly touched with a positively chari0tr0+cgs6 t qged glass rod.stt60 gcq+r0 i The electroscope

  An originally neutral electroscope is grounded briefly while a pos-lxe5:5 vlpg kdtga:otec :+9 itively charged glass rod is held near it. After the glass rod is removed, the electr 5kglc 5ld9e:v+p:gtot-x :aeoscope

  A positive object touches a neutral electroscope, and thej*/eum(m gx/k leaves separate. Then a negative object is brought near the electroscope, but */ mge/mu(kjxdoes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insugpf5*4v, 3/scfzoa1fgtu q p :lated table. A neutral metallic ball rolls straight t5tqfco*av:43/pg , ffzgsp1u oward 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 the final charge on each ball?

  Charge is

  What are the units of the Coulom,x;nfy1(u 1wwk tak z0um0m6 qb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larm ayi/ceok(q u795 p77c1hk. (jc jdyeger in magnj.e7k7 a7(qikho5cy y/ e(pcj d u19mcitude than the second charge.

  Sphere A carries a net charge and spheryz- 6,.upxf cqe B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostati.q-fcuy,6 x pzc force between them?

  Two charged objects attract each other with a certain force. If the charhf/b) k pw0c:.wec 3r ppg5y)zges on both objects are doubled with no change in separation, the force between th w / g0py)pezcbhr.wck:35f )pem

  Two charges are separated 2l* p+/-shw dwq cmun-ac jgf ici+7u8f8;5dd by a distance d and exert mutual attractive forces of F on each other. If the charges are sepuwdqd528 j7-cfiwd+m/8*+uifl- c;aphsngc arated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happ bqic4 n(lh4chnklo8g7y+7r4n pf p7 +ens to the force between them if one charge is doubled, the other charge is tri77l4gno44p c(h78r+nbfih+p k q n yclpled, 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 happx2/epv sq7j3n*fsg :nens to the magnitude of the force on the proton if a second electron is placed next to the fijf s3*nn7qxp:/2s vegrst electron?

  An electron and a proton are separatenrgktwv2qd22 ,)zpnj apgx+n: s;+k zh pl,0+d by a distance of 1.0 m. What happens to the magnituddtz 0, + z2lx;sp wnjnpk2q +vh2r:k+gp an)g,e 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 to q 4iu (x.m9ada: bc1ti:zic-o the size of the force on the proton if the electron is moit xqb4 :zi9.1am-c:cou i(ad ved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. sa2z*2o r ht 9bf/ hz:d0/ltwiWhen 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 are2sz/* :bd thft/0a2l ihwrzo9 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 b*wz;j/kueeycj3ar * (nf )k;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. What is the magnitude of th* f zj3bae nr;)u;w*kc ejky(/e 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 no ofe ( wqof9qz68qwey2u+5j0wt a vector?

  At twice the distance from a point charge, the strength of the electriookqg/6 y+ e.3q-b mk8mpny.ic field

  Is it possible to have a zero electric field value between a negao/b;g;j(y 7rbxab: rc tive and positive charge along the line joining the two chargesob7/; bb(y:gx r;ja rc?

  Is it possible to have a zero electric field value between two positive5la - um1x w s+3a7;gatmns)zb charges along tha ;ag mn sx+7m5 u-t)zbawl3s1e line joining the two charges?

  Electric field lines8hsj:m lj2)i 2 xij9x*rw .ek2f2 udhj near psitive point charges

  The electric field shi1;p sehf;zmk ,g+p2l ds))pemtd j 1,own

  Can electric field lines intersect in fr,0. y m*ffvd n64fub rpdg06no*kzd7lee space?

  A solid block of metal in electrostatic equilibrium is placeds u7rjxt hbd8k.1gd3) v0mjn(wde7+d in a uniform electric field. Give a statement concerning the electric field in the block's interijudnjkde rh 0 7bs 3t1(m dv8gd.+)7xwor.

  If a solid metal sphere and a hollow metal sphere of equal y :0w 7t0 9p zjs ;k0vb*ast(zms.nwkmdiameters are each given the same charge, the electric field (E) mints m sw 0.:m0kyw 9tazp *v;bs7(kzj0dway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform e 8+.w7wsb *he;osu) ig* trymdlectric field is directed straight upward. What can be said concerning the charge on thehs to;s+ui7mww d.ry*bg8 e*) block's top surface?

  If a conductor is in electrostatic equilibr0eds9j zdr;q-liwgvz) 7 bmqb4g g -5+ium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ground o:r7 9dvmjzn(ed. As compared to the casrm7:dn (ojvz9e without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat/nt( v53m a6t dd:i qy26yqwu.uwl8m iic equilibrium.

State Gauss's law.

  The charge carried by one elect e-4/5voov6/ hmjukfwron 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 many more protons th+9) y jauem9ohan electrons does this piece of plao)+a9 hujm9ey stic have?

  What is the charge on 1 kggxx kfc6nf vqwp056. . 0geph8 of protons?

  An atomic nucleus has a charge1.npph:0c2 zniwx/pe 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 ,2h)c,pt j) k7mbdgurw u15g ; fkw)yxof 2.0 and -4.0 mC, respectively. What is the magnitude of the)xkfyk5u wtgu27m)gch,wb)dp r ;1j , electric force between them?

  A 1.0-C charge is 15 m from a seu (uxy0j f:eyr)nki) (cond charge, and the force between them is 1.0 N. What is the magnitude of theuxyj:(euf rk)i(0)yn second charge?

  Two 1.0-C charges have a force between themjp a3+c-0dr ga of 1.0 N. How far apart are they?

  The force between a 2ri q;ss gp-4w$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially7q( df/x3fmpj svowd- /. nv:t w0wf3y 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 forc37v0qp(n.xs3-wfyd o m/ jt/w:vf wfd e between them?

  Three identical point charges of 2.0 mC are placed oulk:b6ws pcda5; sfb/ nl 2;b6n 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 2 6: dsfk c6blwal5pu/;bb;nsthe electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is u6 sp,my.(,e/uvvu e dplaced at the origin,d uus(u ,v,ev m6p/.ey -2.0 m C to the right at x = 50 cm, 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 the following positions: Q1 = 2.00 mC a1l4r9ktvp 7ldwa3 ;lr6gk0j st x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC chargld t;rrl 0k6kv ljps1agw49 37e?

  A point charge of +Q is placed at the b6dyc g9a j+ek o63nn2center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an elec9n6 gca2ok63jy+db n etrostatic 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is av0cb-vj9*;y r whdfd0e;) dfat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on;;rbhy09d0c wvf)av de j-f*d 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 1vza-s(vdu ut)qz9j+ t -a5,vk 6anpc= 5.0 nC is at (0, 0). Wzq1sva-+a ttu9uv -dvpz5ka (c )nj,6hat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatru6flpew f m8.-a(*jferal triangle which measures 30 cm on a side. What is the magnitude of the electr-p.w ff6e8rj( af*ul mostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepa-t(*c9 ta)kegaxtn kot2v55p rated by 3.0 m. At what point, on a line between the two charges, would it be xt9k25 p-ak g(t5t *nv)taeocpossible 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 at x = 4.0 m. W ndn;nx- 9rbn8here on the x-axis can 9nnb8-nx ;nr da third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is /u ;tpcvrkra*6:s1y .)lbgi bplaced at x = 2a. Where can a third positive charge +l:r.k i s)brab/ u6*g;v1ytcpq be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. cpar0.vq7,;g mmfh r *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-gy1no ;3 v0lp3w 6z hnuseej+p against the force of gravity by the attraction of a fixed proton some distance above;+61pslh zuyge3nne vjow3 -0 it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commuzkjy6 o;yr5i v:2t2z0i(dck on point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic ri2( ytkjdico6;5u0vyk 2 :zr zepulsion 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 byqczhhree ;4/)a-a5is the magnitude of the electric field at a distance of 1.0 m from the nuclzrbeh a;q 4c)ye-ah5/eus?

  What are the magnitude and direction of the electric fieuy+u8go8 lvi 3ld at a distance of 1.50 m from8i+l38gu oyvu a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is y5-s ;e)gh v,iapi)yythe magnitude of the electric field at the location of the test c y saepvi;5gyy ))h-i,harge?

  A 5.0-C charge is 10 m from a small test charge. What i*a9d/ j/1 8uhx huvfhhs the direction of the electric f/hua9*v/1hh8 j dx fuhield?

  A 5.0-C charge is 10 m from a small test charge. What is gl2ttx0z1 n n18.hebvthe magnitude of the force experienced by a 1.0 nC charge placed 8x n1ztgnhe2t .l v10bat the location of the test charge?

  Two point charges each have awot ;gcl u l/:,v )9moo4zcuw) value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at u v;ccwz4l:l tgmou9,/w o)o)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 -42w5lpi xe f+.v:do+iv5jol+h .0 mC charge is placed at the 50 cm mark. What is the electric field5ojpiw2l +vdhl:f.++5ievx o at the 30 cm mark?

  A 5.0-mC charge is placed atmczjtoqgcmn+ 82, n*/ the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what z2m8+cqtjmc ,* nngo/ point on a line joining the two charges is the electric field zero?

  Two point charges of +3.xv5-qdlize ;j6 ni- ty/ns.o70 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric5-njqyzi;d vos - x7.6/ltein field at the point midway between them?

  Three 3.0 mC charges are at the three corn 5d0cuqr7)v -dv4jss uers of a square of side 0.50 m. The last d5sd-7 jsu0cqu v)vr 4corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m(, lvk2xoat 3q on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at kxt2oqal3( v ,(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 char68v3ndzkl:nyamf ) k wn02udq8/ ind0ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elect/)3k2wn fd8niu: qzd nlny8 0vk0 6dmaric field?

  A particle with a charge of 4.0 mC hpp tuo*fsu0qp- xr.,7 as 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 field of 6000 Nls. uxi+a-iyo7ro )( t/C pointing downward. What charge must be placed on the ball for it to be suspended?l- +our(it a7 yis.ox)

  A foam ball of mass 0.150 g carries a charge odd.iy4va.;j pj -p9ype.hwm1 3ya-;w egror6 f -2.00 nC. The ball is placed inside a uniform eajdwp .3-d rv6- .ge;i.awy;hmyrj1 o p9ey4plectric field, 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 carries a charge of +2.0 mC.uy-hflkfop 7 kq:) v11 What is the magnitude of the electric field -y1)lqk oh 1fvkf pu7:5.0 cm from the sphere's surface?

  A metal sphere of radius 2.ewv/g774wy*ho ,iqon tb5w) x0 cm carries a charge of 3.0 mC. What is the electric field tvyg)o4,we/*ni5h7oq7wx bw 6.0 cm from the center of the sphere?