State the law of conservation of electric)q+6jc wy6ch z charge.

  Is it possible for two negative chd:6z4 8qcm d):p1bna jjq (icjarges to attract each other?

  Is it possible for a positive and a negative d 3jcky 9o*dr0charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process tboz kp h pw69b7wg/ z7gx9rr25he glass rod acquires a positive charge and the b5wzop6w/7r9kz2r7 xpg 9gbhsilk

  A proton carries a

  The model of the atom kt jw-*ad+8iqwhp6mb; :kf v1shows a

  A neutral atom alwaypt pa* i 4,sbz35pfbf+s has

  An atom has more electronj5)z :bm)n rwos than protons. The atom is

  Materials in which the o:eaf.ws1b m50pk2 0cstrd 8d7y8qp i electrons are bound very tightly to the nuclei are referred yf:5ckid 0so as8 t7bd8m2qep.1pw0rto as

  Materials in which the electrons are bound very loosely to the nuclebxkgq6. f.e* pnlxw4-i and can mo - kfxw.ngq e4bp.l6*xve about freely within the material are referred to as

  A negatively charged rod is brough-x83 *o+cgybmvz c )li0ustvchi w(7 (t near one end of an uncharged metal bar. The end of the metal bar far0 gbivu(h tc8 zmc)xso3c l 7+w(vi*-ythest from the charged rod will be charged

  Sphere A carries a net posmxts 2qkf68 ;kefrn 4;itive charge, and sphere B is neutral. They are placed ekf4;xqs86 ;nmfkrt2 near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod cha*k y/9 b;g 94 dcgjduewmpm1x.rge an electroscope positively?

  An originally neutral electroscope is br/3nbjbl )b6zhq/ o*a wiefly touched with a positively charged glass rod. Thezab onjwl*/3/q b)6 hb electroscope

  An originally neutral electroscopoy2(eah7),33t k phtbd 6fgvl e is grounded briefly while a positively chargey3hg vth o)6k7b32a p( eft,ldd glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope9piso 1ko)z9u , and the leaves separate. Then a negativeu9o1ps9o) kzi object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neu:br kd. kx/3aytral metallic ball rolls straight toward the object, but stops before it toucx3rd /k.y: akbhes 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 Coulomb constant 0-41q: bp7gypr v culdm7jk5w$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is87ycdz )su2(sbd- hibye x (r( larger in mar(-ydc)i sy8udbe2s (h( 7 xbzgnitude than the second charge.

  Sphere A carries a net charge an h8ltkgwj p 6jay-:c/z0g9xf6d sphere B is neutral. They are placed near each other on a9 gyj0 -xtkfa 6z6:hw lpgj/8cn insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the nc56va28mmke charges on both ob2 m56kmn8va ecjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive for30aqgk ld9e2shp4vngfl96, r ces of F on each other. If the charges are s4g9l2npef0dk6l ag3 ,hvsr 9q eparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attracx cbtk 2a08lz9; kanac ))r/wct each other with a force F. What happens to the force between them if one charge is doubled, the other charge is t2rbla xk)k90ccc/z w)8 a;tnaripled, 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. Whvtv8f aky/h0lwoi+2 , at happens to the magnitude of the force on the proton if a second electron is placed next to the ywilv8,2 tvf k0oa+h/first electron?

  An electron and a proton are separated by a distance r i6n peqg3 kh,cw)-b0v)8;(xx btxvpof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next tow3epcpx6g8q0 ;vkbr)vx x ) btnhi(, - the proton?

  An electron and a proton are separated by a distance of 1.0 m. pk9a+fen qjm +jv1 m7n0x/j:eWhat happens to the size of the mnxjej9pv j :+ 0e/+qn1kmf7aforce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed 3 iq;f+qzxdwb* gtnl8q;3sff1zax62u1td n + 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 corners2qx1ia w;xqz gs btf3utz8dn6d1 fq*+l;3+n f 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 equilateral tpp0 64h25vhtehd ;oq ariangle. 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 t2 dtpv h4eh;oqh06a5 phe 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 followingjo /45va7 u mz40lr7cvlh+k fr is not a vector?

  At twice the distance from a point char: xu3ja1*1w s81 qxs --la(6rfzjsxahz;eqdr ge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and positi t 6zwplhg4(-lkjns 1+ve charge along the line joining the two chknp6+szghw14t(l-j l arges?

  Is it possible to have a zero electric fiel:sv oe2votb :;d value between two positive charges along the line joining the two: oot;es2:vbv charges?

  Electric field lines near psjty5r *3d( 2t4z6 gto4ostkrrsv/4l citive point charges

  The electric field sho a(q*uzo idw.r181yn u9md*f1ykw ip -wn

  Can electric field lines pl+ i-w g/2v+qtghnp7intersect in free space?

  A solid block of metal in electrostatic equilibrium is placedrw65z ln (jf8g3 koh* v43iutb in a uniform electric field. Give a statement concerning the electric field in thbn5vf8j4i h w(6g ro*tl3 3zuke block's interior.

  If a solid metal sphere dxfllwm (t)i 0r*a//z and a hollow metal sphere of equal diameters are each given the same charge, the electric field if(r/l0z*mt/ w)d lxa(E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a(yzt(l 2wd ;-a ,ftgck region where a uniform electric field is directed straight upward. What can be said concerning the charge z( ( ;twt-lfg, cd2ykaon the block's top surface?

  If a conductor is in ele-ym0k:zc rl: fctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow m l8p8vz.*a,t qe)clf5d)e adeetallic sphere that is grounded. As compared to the case without the hollow sphere, the edez *)te8qea v.cd )8af5pl,llectric field at a point directly above the hollow sphere has

State three properties of conductors in st oncr 55: 5bj :ye:+m9vwfzw( h)cjrwiatic equilibrium.

State Gauss's law.

  The charge carried by on y9f a/8l(p skmfgso6paf ;-e0e 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 many more protons thauw;.878oghir4yfu,sont a:itv,v2 r n electrons does this piece of plastic uotu2 v;aoiw8 7gy.r hsrf 8v,4,i:tn have?

  What is the charge on 1 kg of prg;fkm+; kxkz -otons?

  An atomic nucleus has a chargh2 ex3wmr+vz qpc 7r0+ -pfg8le 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, havenou8 ng(4z+y5xy v:fu charge values of 2.0 and -4.0 mC, respectively. What is ty4v+g 5:uun x8fno (zyhe magnitude of the electric force between them?

  A 1.0-C charge is 15 m,zp)p,m,+zn l j8s rfo from a second charge, and the force between them is 1.0 N. Wha z,o n rs,8p+jz)mf,plt is the magnitude of the second charge?

  Two 1.0-C charges havemtd 7mt2;lil: a force between them of 1.0 N. How far apart are they?

  The force between a gw0oqu( e o:g,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expjgk3audky g*fv 3q**y 6)f sp9erience a 1.0-N force. If they are moved to a new separation of 8.0 c*y3q6pfgk a*f9u3 *) ysgkj dvm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plamf kvl )yk54bw0 kvq03d(5dqwced 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 dirk y 3wd(5d vwkmfqv l)0b5k0q4ection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge oc+c4 l 1*gpc+zm,lcjvf +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.++ vccgzmlj*p,1 cc4l 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 ropy4z/:jxy q.y r8 j+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 /x .j:ryzrqyp+8 y jo4the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, ig-kq:6jn:+0xi uab aand 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 q ug: 6ak0 bi-naij:x+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 a2o a j *xcvb yhr(dsk5+92h:gnt (0, 0). What is the magnitude of the net force o*ho b5 vchdg+2sna jr2(y:x9kn the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = vg7we+a: 9 zok-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force ozka:9 w7o+ge vn the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at e r9k7c pa0h)vthe vertices of an equilateral triangle which measures 30 c9r h )7pac0kvem 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 separated by 3.0 m 0iy,w3ys1gggj* kty( +0fvh m. At what point, o0 t*h3y 1gfwyvyjk, g+g (ms0in a line between the 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 is at x = 5nwt 8*6ze jr(-gg jzm4.0 m. Where on the x-axis can a third charge be placed so the net force o-5z(rg68jmgtnje* w zn it is zero?

  Charge +2q is placed at the origin and charge -q is plaf gt zxro7zw 9tri/:1pa5ak4,ced at x = 2a. Where can a third positive charge +q be placed so that the force on it iarwikz9f4p 7gx1ta ,o /t:r5zs zero?

  A copper penny has a mass of 3.0 (fshn)-z 19+q w soh-8cpvu i2beriq3 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 the attraction of+eytqiac. -;ju1 n -wg a fixed proton some distance above it. How far above the electron is the proton?.n g+a-jce 1-uqti; yw

  Two 0.20-g metal spheres are hu(b+ etmn.n pw*+ (wbezng from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatw+t nebb*wem.+( npz( ic repulsion 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. t ki0 3kvs-.ll1j8xq d What is the magnitude of the electric field at a distance of 1.0 m from the nu.kkiq -tsj3d0v8 x ll1cleus?

  What are the magnitude and direction of the electric field at a distan6p9 dy (b//jooam1o2v 26pomi /a hkcjce of 1.50 mi vook poa 1 a6/jy2odc pj96h/b2(/mm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. yat:ce6k4 mm9What is the magnitude of the electric field at the location of the test charge? t6m 49yme:cak

  A 5.0-C charge is 10 m from a small te v(g vu064ys*ki) ycffst charge. What is the direction of the electric fie(yyc4 f* uf)vk0s gvi6ld?

  A 5.0-C charge is 10 m from35 ec himbvl0 0y93gwe(nq f1n a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chah50qg 1lvn0e3e fwc9 3nmy(birge?

  Two point charges each have a value of 3.0 C and are separated du-klp8( lhf:f t9:jsby a distance of 4.0 m. What is the electric field at a point midwsf(p:h9lfd u :tk-l 8jay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a-h+u w eofp;:mnd a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm;f m:oe ph-w+u mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 thm/xl)q5ahig2+ t8v w0v q6x4vv 9qsmC charge is placed at the 50 cm mark. At what pointxt 98 50hxqvsvq6hga4mw i/ q+2 )vtvl on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7::m qw1z(1t1plc fvvk.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the (w1:p1mv:v zqfk1 ct lpoint midway between them?

  Three 3.0 mC charges are 0qz agwc 2qo4 ,6fshg7vw m-k.at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric f2q7,6o.4ggqz-ws0hvw ck fa mield at the center of the square.

  Consider a square which is 1.0 m on a side. Charges areqx71+o,h vpp v 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 q+hv p,vop1x7is 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 unifoa1 n+v l5bvb,jrm electric field. What is the magnitude of this 5vablv,jn+ 1belectric field?

  A particle with a charge of 4.0 1rp 1 pan5gbbghew*4+t 4,lud 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 in an electric field x)p9.8sd/v- aenk) z3vw, x i.wkaqn cof 6000 N/C pointing downwcdpn v.)9eiw8 zx)wa,s/v kkq.a-xn 3 ard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge 5)0(akbx p f+;rl.n raa1rcsb of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended(c b snr ;l+)par.a5bar 0k1fx against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 h ,9bp gixk ;ck j/:ufkh1mw+*cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fr; 9*kpm:,u+iwb hk /fhxcjg1kom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCcn 5( :ib,lqdj;0wlos. What is the electric field 6.0 cm from the center of the sphe50is oq; d( lwbnlc:j,re?