State the law of conservation of electric charge * 0da8cunwko8qso6g- .

  Is it possible for two ntz :7im.ulwu j. k9)pdegative charges to attract each other?

  Is it possible for a positive and a negative charge to -2 8i ob;*jve(ngu wa,aco,riattract each other?

  A glass rod is rubbed with a pie,r+m hoyn (v ;grx yqgy5lw/kw28j 1j9ce of silk. During the process the glass rod acquires a positive cr ygj 8;hw/5 ovrjmy,+g(1k9q nwy lx2harge and the silk

  A proton carries a

  The model of the atom shows631 v yx fxa7o:p+v zblu0d1nq a

  A neutral atom always i ,1h9.yeqs rwb+eu +phas

  An atom has more electrons than protons. The av6l9od9x, r(9 d:7fbhryu c nitom is

  Materials in which the electrons are bound very tightly to the n2 (61lr+pr myebcl ghtw/dl 1*uclei are referre m*g+lbh y/ 61rrwdt1p2c (lled to as

  Materials in which the electrons are bound very loosely to the nf2na4kt nh7g29g;rn5g5pkexuclei and can move about freely with2gg4k 5;gx7tf n2 na np5ek9hrin the material are referred to as

  A negatively charged rod is brought near one end of an uncharg7 -cwc/.uxm ryed metal bar. The end of the metal bar farthest from the charged rod w.rm-uyw /7cx cill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. c7 ,ak5ji: ew9n-nxhx They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct9:i ckaxen-h7j,w 5x n?

  How can a negatively charged rod cpvd4zqsxu2+ (1 1dw-j d-jn9mqpbhxx6/uwi ,harge an electroscope positively?

  An originally neutral electroscope is7+ub ytd iv .0fx::j)zbhb e1k briefly touched with a positively charged glass rod. The electroscopbh0kxby +: bi:fz.utjd1)e 7v e

  An originally neutral electroscope is grounded briefly wno )pd -kn(c9b 5;bo-:sd- xdszo 1fmfhile a positively charged glass rod is held near it. After1fxd -) - cs(nkzmo;pdb5f o9s-nodb: the glass rod is removed, the electroscope

  A positive object touches a m)i,xu+4jc f4ys;p nxneutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does nnm)4yc +up4fis x;,jxot touch it. What happens to the leaves?

  A large negatively charged ob-)cfv .mp+ i0u yd-bq-y3 qvgzject is placed on 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 firsty.pcq- qdgzu 3 v0-vb+m )y-if 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 Coulo:fcrns2 /k1 gymb constant $k$, which appears in Coulomb's law?

  Two charged objects t0to8zl5rr 4b:zkv 0 n;)bvcyare separated by a distance d. The first charge is larger in magnitude than the k 50:n;v c0 brtz8)rz4o ybvtlsecond charge.

  Sphere A carries a net charge andvlip7a/p8jcw.xiz,:i6z ymxf2, sj0 sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the elxzs7xfa,y wcl8ijvj2 .0,p i6pm/zi:ectrostatic force between them?

  Two charged objects attract each other with a certain force. If3 zu7afz7(.rjo(j+jq)r se 8z(h w xeg the charges on both objects are doubled with no qw.r3 zrau(jszo7 h7x z8g(f(e)ej+jchange in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrim bf,8sug2 7gk6s8iuactive forces of F on each other. If the charges are separated by a distance of d/3, what are thf86ki,8s2is mgu7 ubg e new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forjq-5 18 vjdh(brzn9 trce betwee98tn5jbj- rvz1dqhr (n 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 is now equal to

  An electron and a prot76jjnbuyu,/k on are separated by a distance of 1.0 m. What happens to the magnitude of the force on thb6u7yj k/,unje proton if a second electron is placed next to the first electron?

  An electron and a pronjiout q/z+) 2ton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the fo ztq2+ni/u)jirst electron if a second electron is placed next to the proton?

  An electron and a protonpz mto. jj9v+/c27jk w are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 9km +pz /wjcj.2vj7otm closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point )upeft/gi;9tmz *o y*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 th/9po;ime* tf* )ugztye net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroidxf4. 87 xih:bekq 3)bo)eeygs eh/y/k of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forxi4 y8e7e.k /hqxo:3e e by g)h/)sfbkce 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 isgadhf ym9.5i /i0u9 pk not a vector?

  At twice the distance fr0zk-k efcqbxl/ fj r(f)k49 5xom a point charge, the strength of the electric field

  Is it possible to have a zero e,/af9/ okn4mnp*qs hhlectric field value between a negative and positive cf sno9 kqh*,an/h m/p4harge along the line joining the two charges?

  Is it possible to have a zero electric . ee21ktqwke1ocg0 1x field value between two positive charges along the line joining thek t1gcq11x.2 kw0ee oe two charges?

  Electric field lines near psitive po:; -t,*arrx eyfnu7urr 9vpv5int charges

  The electric field showngdm,b ent8x9ai9mqd( m2a;o )b1q 4zy

  Can electric field lines intersect in frh hn 4b/py0g4x mq+q*tvfyr1 1ee space?

  A solid block of metal in electrostatic equilibrium is placed in a uniford*r xruwwbnp 56z0t4) m electric field. Give a swz rw dnt*up4r6 bx)05tatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamec0.fit; aoq eq64k* guters are each given the same charge, the electric field (E) midwa.q;i4oauk g0ct 6eqf *y between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wheregkr bj b,b b,;;9rz;nf a uniform electric field is directed straight upward. What can be said concerning t;,b bb r,f9k ;gnrbzj;he charge on the block's top surface?

  If a conductor is in electrostbo (b(t0*evbfcz (va*atic equilibrium near an electric charge

  A positive point charge is enclosedb-wt f6uzbm60k3 -tpr in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electr bmw06r6-f tb tkp-3uzic field at a point directly above the hollow sphere has

State three properties of/j yt g.1hg1oz/u vy4k conductors in static equilibrium.

State Gauss's law.

  The charge carried by onn6-s3ps h vv/re 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 v6ps9 y;xl q o1o ol))hvn-a0rcharge of +2.00 mC. How many more protons than electrons does qpl nl;))yoaxr0-hv 9o 6v 1osthis piece of plastic have?

  What is the charge on d k*,nv b,;-l zy:hvhv1 kg of protons?

  An atomic nucleus has)d-t/ qqk3mc776ivg v3nh zhr 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 and -4kb+q;n db5pw8jkfg;7 .7d nj0d9lrc c.0 mC, respectively. What is the magnitude of the electric fo k78bnqc ngckbd; j50 d l9+fd.p7r;jwrce between them?

  A 1.0-C charge is 15 m from a seconf/0m wbi+p ov2bkj se+e;dg) :d charge, and the force between them is 1.0 N. What is the magnitude of the secve +oswd+:kpfei;2/ m0 b)bg jond charge?

  Two 1.0-C charges have a force between them of )kn1mdwgr0g- 1.0 N. How far apart are they?

  The force between a df23gq 9j crib*u -mx5$30 \; mC$ 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 force. I/2w 9o gntlq4x4n kynb6vhjc79 *hhf 4f they are move gf/k47yn4cq xb nj94*9volhhn ht2w6d to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on tvt 1e0)t)-fi)mu(0; 7pww yudmnk rffhe 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 the orw7( dtf m1i;t u)n)f - w0remfpkyu0v)igin?

  Three point charges are placed on the x-axis. Anqc( r1j4 gu1y qenhucaevr)sl56-bc *,- x7w charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0ehcv-ng a-u,*17bs5ce cj416xu()rlrnwqy q 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, m5og7 o6 82-gat-nlkjoteek: 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 the magnitude of the forcoe7ktlj8noao m5et 6g2 --gk,e on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and 3hvq*-,*dy ;)iq vubli9fgyr a second point charge of -Q is placed at the upper-left corner. It is observed)yv ;y b* 9fq3udi,g-qlh*vir 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 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);v9b. u* 6k 5ze3y9glklrbt7hn Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 k39569 h *v7n kzllyeb.r butgnC charge?

  Q1 = 6.0 nC is at (0.30 : l:gq w q,up;-kzco/wm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcezl,p o c;:qguwwq:k-/ on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of d7( jga)mx(gqe,h(d s an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electqgdg(ad (sx)e,j(hm 7rostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At/9iv+g*yk1yj m3 j,r i5zie mm what point, on a line between the5v9m 1r* iy,mjjeii+3z/gk my two charges, 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 +9.0-C charge /h gzpl7ryr*w +a-c8ih 2y ml1is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zeay wyr2 7*p8 hgm-/+hl ic1zrlro?

  Charge +2q is placed at the origin and charge -q is placed at x = 2wot9ot+ngr8wja c 4l 9 0.4b-ahg1lc wa. Where can a third positive ct w4alnw.-c9jtra0 l w+ g41 boho98cgharge +q be placed so that the force on it is zero?

  A copper penny has a mass ov+yqqc-x l wa5l1*cpp9);z gpf 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 against the force of gravity by xrdm*d/8kqw, n n2/oc,fkkk+av7)q v the attraction of a fixed proton some distance aboqfdrkk+*)mc o ,wv8/qa/kn,k v 2dxn7ve it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hunuef19w h6puqxry ez7xj:-1 * rg 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 angle between the threads iszx6e uf9xyr:1e 7hj1-w pr*q u $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electr2ji+v3 o,l mnbic field at a distance jmvn+il,3 2 boof 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fie dojqw2a6 67lp 04ywceld at a distance of 1.50 m64c6 0ayljwd 7oqp2we from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitup pp-zt.+lmt0s ao3x 4de of the electric field at the location-m+ptaxz04 3pp . oslt of the test charge?

  A 5.0-C charge is 10 m from a small ewwqi;)h g-9l test charge. What is the direction of the eweq-)g9il;w h lectric field?

  A 5.0-C charge is 10 m from a small(p3 nbcq*-i ./v9i lkcyswik9 test charge. What is the magnitude of the force experienced by a 1.0 nC charge pli v3ip-ic9ql.yc*ksw/n 9k(baced at the location of the test charge?

  Two point charges each havee;s:.up hmywm:4ig +z a value of 3.0 C and are separated by a distance of 4.0 m. What is u gw ez:;p4y.m+:m ishthe electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic3*10yd ci 8li sjxh(fgk and a -4.0 mC charge is placed at the 50 cm mark.*fj y8l3c hiidg x10(s What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 9fsvd q6mm.8wf* )kc m0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm marcks*)6w m .dmmf vqf98k. 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 = 0.2b1d*zw15 u f f7:t(ktoyp 3 n:isoq6hu0 m. What is y1bo(t 1qfu:fzsk 3wioud56 7t:np *hthe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarea.:vg gk jb.tq0)2+, d e zxnbef,k,sz of side 0.50 m. The last corner gaet 2,+g)j kezs .:qzf v,bk0dbx,.nis 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 on a side. Charges are placed at the cz :y dkpe,gld+; )m7d;5c cvwhji0 em4orners of the square as foe5y,d wm) de4 j+;d c c70:z;gkvlhipmllows: +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 69 5pg6:hk*it 3b.qhyy puqorit is placed in a uniform electric field. 6hp9*ktrq5b3ig.q u6:yyp hoWhat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mvurodk*:+s .4 n xazz4ass 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 uf* d*e/+ pabris placed in an electric field of 6000 N/C pointing downward. Whatfedub p+r a*/* charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g 5qy /l9gz;cgg carries a charge of -2.00 nC. The ball is placed inside a uniform electric field,/ g9g zcglq;y5 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. r: kwgvvso.e9+cl 8/ wWhat is the magnitude of the electric field 5.0 cmeog9:v cw.8w/sr lkv+ from the sphere's surface?

  A metal sphere of radius 2.00:m ynxryd-ne 8;1x ir cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the ceyxe; d-0y:8xr1 nnm rinter of the sphere?