State the law of conservation ofpn s+f+9u-.dy xu frf( electric charge.

  Is it possible for two negative ch(bv0k f;pp( ze p a29i+a4gqn*lc/ hrsarges to attract each other?

  Is it possible for a positive and a negative charge to ;f ea(wt(ogs4attract each other?

  A glass rod is rubbed with a piece of silk. During the procesj5u5i jduc16is the glass rod acquires u516idji u 5cja positive charge and the silk

  A proton carries a

  The model of the atom shoeo an5i46kvtba *z4nhe5g)8l ws a

  A neutral atom always ha n)p751a(ub ewk1xsbp s

  An atom has more electron82e.pwj ujp1bg; v/nus than protons. The atom is

  Materials in which the electrons are boaoxh1lo9n , , wua5 +7,-oi1j3)r aklp zrftnuund very tightly to the nuclei are referred to x1ufu9al3tji5o,o1- r)hnz arlw+n7,,apo kas

  Materials in which the electrons are bound very loosel/u/0tbn/n+ wamsl ag(y to the nuclei and can move about freely within the material ar+/bamnl ws g0nt/ a/u(e referred to as

  A negatively charged rod is brought near one end of an u mdn:ptq8.z:*u uyl6vncharged metal bar. The end of the metal bar farthest from lpn6z:qt*v ud8 :m .yuthe charged rod will be charged

  Sphere A carries a net positive cha3 xj55uoubtj n, c3tv,w/vsn (rge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thatvust5jcnbnj3 u,3t /5 owx(,v is grounded. Which statement is correct?

  How can a negatively charged rod char uzkwf)6d+.m0tdw mg7ge an electroscope positively?

  An originally neutral electroscops2 7gx+ke0d-k1 a4 .u 1*zjvmuovwdyoe is briefly touched with a positively charged glass rod. The electroscoodjmsoagu27 1v1.* +k0v -4ekyxd w uzpe

  An originally neutral electroscope is grounded briefly while a omil+yh7zna2 fb-f3nz9-3y l positively charged glass rod is held nzh 2n iy-mn-by3a f zllf73+o9ear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. 1( .9jkhubyri Then a negative object is brought near the electroscope, but does not touch it. What happens to thr u19j (ibhky.e leaves?

  A large negatively charged +)kzhdb y m6zc7- v :k(sr/xkoobject 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 ydzbkcrkm 7 -(/kx):ozs+hv6ball, 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 consta opk8i ;)xo)atnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance bae8ubn r7 .j/9ll nx;4ykf7c d. The first charge is larger i yrlfl b;cjn87kb7 ./9na4uxe n magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. ky*y0 gv6uce7 They are placed near each other on an insulated table. Which statement best describes the electrostatic force y 6 0k7yucg*evbetween them?

  Two charged objects at0hua,dcb/y s.o 4fm/mtract each other with a certain force. If the charges on both objects are doubled with no change in separationym,scdam.0 u/hob /4f, the force between them

  Two charges are separated by a dista+oghpzyfmb-l;bvi5 , a l*.o:nce d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutzbpib*; :falm5 ov+.o -l,hgyual forces?

  Two charged objects attract each other with a force F. W s lm3xu ;c)ekop,+1wlhat 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-f;e)cx uom ,plw3+s1 lkourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m.q:(s0su)ig3l6zbrbn9225bard s k u hnvmw.5 What happens to the magnitude of the force on the proton ibvu r25s6n: n)h(d 9lbi3qb20as.5zw mgu rs kf a second electron is placed next to the first electron?

  An electron and a proton are separated by a qur ouiax2 k3i5,ah7h :85bvbdistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next vkau bqh3x25u7 ,5ai8bhrio:to the proton?

  An electron and a prot o ;kz4rs(q1 ut;zx3ppon are separated by a distance of 1.0 m. What happens to the size of the for zr;4(;utks31pzpq xoce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is place; +uqd5 94 zsqwl97yj: uniiq;k4svu md 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 electrostatw i+;;9 7kqmjqnu94s:y5d s4uv zquliic 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 charge at the center of the square?

  A point charge of +Q is placed at thwcvog ,2l) 5the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an elt,v52 )wcol ghectrostatic 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 not a ve ovbydk 0 + hahabe5j9687 a/w*nywk-nctor?

  At twice the distance from a point charge, the strength of the ea;)cyjd 5 dvm:lectric field

  Is it possible to have a zero electrico7 6i.l :fee3csrc ,aq field value between a negative and positive charge along tac37 :ef c r,6eqoil.she line joining the two charges?

  Is it possible to have a zero electric field value between 27,rucwnx -lw gjcy .-two positive charges along the line joining the two chargewn- xc, c7w-yj .gurl2s?

  Electric field lines near psi 7cu(vzfi8 s/g)r,ix( wg +ztutive point charges

  The electric field sho1n3z2 4z: bfxvmn d+pvwn

  Can electric field lines intersc )lu.2x b4zz*jku/ nhect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unin5r dmq vkw02e. yr::iform electric field. Givek .d0enyi:w2rq m5:rv a statement concerning the electric field in the block's interior.

  If a solid metal sphere3t0c8xs( m bfmb 2sj4)w;b eti and a hollow metal sphere of equal diameters are each given the same charge, the elfb bse0iw2s 38bxmtj;4t(m)cectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wo+s.aiib.n/e k oden table in a region where a uniform electric field is directed str+ a/i.ebsi.n kaight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c*zj*/vl r3 jnjharge

  A positive point charge is enc1keb 3w)h:bs olosed in a hollow metallic sphere that is grounded. As compared to the case without the hseoh k13:bw b)ollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equili9.+3vdddk4fz)j gmmor56a ay brium.

State Gauss's law.

  The charge carried by one uu u 62;/p6/yo2 pmqpiha/(sii fm8ig fg(a-r 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 maa,e5b 9adlyh( szok) e-3hcq) ny more protons than electrons does thi c 3dh)9, -ey5azsaq)eob lh(ks piece of plastic have?

  What is the charge on 1 kg of protons?0sm/d/j1 q/ah a j-eov6z:5wws -f ora

  An atomic nucleus has a charge ofs , 2.dq3e.bin 82jju l*qmkvp $+40e$. 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 -4tv-hvd+3ru3/ *pbfcs qp bha7x v6 x15.0 mC, respectively. Wh3q -d7rvab/3*c 1bfhu v h6xv5p+sp txat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betil8 qju0g8h8 iween them is 1.0 N. What is theig qu h8i8jl80 magnitude of the second charge?

  Two 1.0-C charges have ad(m4ksrmk )m: /gxy 5s force between them of 1.0 N. How far apart are they?

  The force between a 8f5mpuq4tj b b38aj. *cja gr*$30 \; mC$ 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. 0goql7f*0vjqkcjau; m)s2k2uy1t 8hIf they are moved to a new separation of 8.0 cm, wo y;jf )k72vlqs1a tu 0j8g0*u c2hqkmhat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chv11gm7efe(w3 jo x 4xgs+m ejxxr:*6varge is at the origin, the second to the right at x = 50 cm, and the third is egm(xwvo xx ej*:+e3j67xs 14vm 1frg 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-a41mnd/a yho * 3:yauwovg um,3xis. 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 magnitude and direction of the electrostatic force which acts on the charge at the or:yodum133ohunaaw4,/ g vy*m igin?

  Three point charges are located at the following positions: Q1 = e 8 m)9z;eak7v.ofxnb2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What nkv7o mz8ba) ; e.f9xeis the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a sect /9arjfbpkdmqqy-4g 7q)(.wond point charge of -Q is placed at thpkq( 7mq/dw4tryaj )g-9 f qb.e 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 a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2:f**n/o gaiiif; 3hpn = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)i /fhpn*io: g;f3 *nia. 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 at (0, 0.10 m); Q3 = 5.0 fja.7,: g *vod71 n m3hqrzfk 3,l;uqt odfyw0nC is at (0, 0). What is the direction of the net fktdrqv o1a* q3 ;gmjf7,3n7l:dffo ,ywh0.uzorce on the 5.0 nC charge?

  Three identical charges of 3.0 mCfd .2 /ww;:bkn efd3aj are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force w;:3 jfawn d./bkf2ewdhich acts on any one of the charges?

  Consider point charg kxld+sm 5 cyxc*zjd)bt50;p0 es of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two chargesmdcp)yslbcd;5 0k* 50 j+tx xz, 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 i.d: una2 vhs4qt(l.b;i l6fkls at x = 4.0 m. Where on the . 6 sdti(f2na4lhb;kl lvu.q :x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = /yw4 n 4n k0dit, o,v9haj+6whpu0wig2a. Where can a third positive charge +q t n h o ia4p9dnyh,w0k4uwiv wj+g/6,0be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. f7)xd6 lsc: kzs-a/d lA 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 :*ty -jyh-ptdrn4ld4 attraction of a fixed proton some distance above it. How far above the electron is the prot4y*pn -dt-yd:jht l4r on?

  Two 0.20-g metal spheres are hung from a common point by noncnwtlrq1r d )(6sdu7- vonducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apantrqwu6dr (7s)d v1 l-rt 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. aji6 ,guxhpju(n hlttjh *-0u6+i m3b ps m01/What is the magnitude of the electric field at a distance of 1.00hm u6 hm 0u ba/h1tj sjjinpg6itx3u*p,-l(+ m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 14qd )/etco9v,)lmnn x.50 m from a 50.0-nC chal qn4/ e)to,)mcvxd9 nrge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni:dhjq426 +j1jcoj vwr tude of the electric field at the locatiw 4vd+1jc j: 2hojj6qron of the test charge?

  A 5.0-C charge is 10 m from a small1* gdz ox-:j1 ;mpyoog/ he4vn test charge. What is the direction of the electric fiy/ez 1v1gh 4xooo m*:d;gj-npeld?

  A 5.0-C charge is 10 m from a small test charge. y a,i)ksm87xpls;. qzz2oobt 4:2h zv What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test yz li 2;4o:.,ovhs ab2 tzx8zpkq7)sm charge?

  Two point charges each have a value of 3.0 C and are separated by afo r84*qy4 gb hi*wuz* distance of 4.0 m. What is the electric field at a point midway between the two cha8hf4z yq *gowbri4*u*rges?

  A 5.0-mC charge is placed at the 0 cm mark of a mwvvzp)p4;;r6 gth68cox-jp v eter stick and a -4.0 mC charge -rvh o8cp4 )zv;jg6v6pt;xp wis placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an-fo9fhb2zli : d a -4.0 mC charge is placed at the 50 cm mark. At what point on f2-hloz9i :fba 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 = 0.20 m. Wuigkgg brx h966 )ss3,rm/ b(rhat is the magnitude of the ele rb sx,gr)hrg(3k6 gbs96ui/mctric field at the point midway between them?

  Three 3.0 mC charges are at the three cv ufjuj9m 6-7corners of a square of side 0.50 m. The last corner is occupm6ucf -jj79uvied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 u4f /vu05;9 vcay p*qcip 7wl/lp5q xpm on a side. 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); -3.0 m4qllc 5cp u/px5/q pfa y0pvv9*u wi;7C at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a cha5ca,c)d9,qw hghu+xz : htd(urge of 5.0 mC when it is placed in a uniform electric field. What is the magnt5 +(x qwc)z:u,hdg 9chuah,ditude of this electric field?

  A particle with a charge of 4.0 mC has a mass oft;8 z fva*.cshhut .c)*i ft7e $5.0 \times 10^{-3} \; kg$. 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 a),j3kooj / 2xbf8lzqc )al6qN/C pointing dowj)/zaqk,f 6oa xq2bl 3 o8)ljcnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0+1dfjrsm9)eg g.r tn ).150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and)ngj mr+tred1.f9 g)s is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radiuibzb7fn.i+3w .*jxnl( x* y(nm vy 9tss 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from theji+yn.7i *ymbzxl(*n3(nbw s x9v.tf sphere's surface?

  A metal sphere of radius 2.0 cm car bqd( 003tbgfhries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the fhb qg 3(d0b0tsphere?