State the law of conservation of emmq xx:lqzzf3 k4+4bykq3k3) lectric charge.

  Is it possible for two negative charges to attract ef u8 huio8u1w 4zra23xe6xkt 5ach other?

  Is it possible for a positive and a negative charge to attract eaeq5pdo bb:0u, ch other?

  A glass rod is rubbed with a piece of silk. During t1ic +cn*qkqe8nhuq26z3 (pu t ta,*rche process the glass rod acquires a positipqc(1z+nakuc2c*q*8qn 3ttu6h ,reive charge and the silk

  A proton carries a

  The model of the atom showh6t633 lf*cpp n 06jkbzez ;ahs a

  A neutral atom always ha/wz3io-qfc /,bnj +avs

  An atom has more electrons tha:)9 nu 8jobij,wjw t(on protons. The atom is

  Materials in which the electrons are bound very tightly to t:7f8 enz f(cwx*r va*tbf .vcb:3h )w+*bwk nhhe nuclei are referred tbc8v rw(+v nx)cew3f*7 t*zh *fbfnah:w.b:ko as

  Materials in which the electrons are bound very loosely to the nuclei and can mpq s lz,1mx/s1x2wc0bove about freely within the material are zw1l 1q xp,ms2/c0bsxreferred to as

  A negatively chargedm .mi+mfeo:x./ 3 cetf rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wom .cm:xe/.f tim f+3eill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They a* - xe6tmq jo,sh(s e7)yudb2fre placed near each other on an insulated 2omu*yj6f bxe, ehstqd)(- 7s table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an x1zffjve v. g.(qdgd-zrgn3(ub.t28 electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargeul9tvql55u. dd glassd9lu 5 tqu5.lv rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chargo n yteu)f)0m.ed glass rod is held near it. After the e)n0)m.ytufo glass rod is removed, the electroscope

  A positive object touches a n/s: m-hx1 mfo 8zyn(wd/b5loaeutral electroscope, and the leaves separate. Then a negative object is bro-5hlz dyx1omma:bwfn/ /o( 8sught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed onmdq a1ae6qng3i n g+d9gik+0, an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second + kned gaq30n,i61gia9+gqdm 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 Coulombd5 pe/ ;g-bfhj;c/f-kv 5gjd1 ym 6,fftvxn/i constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger izz s*. g64;vjlq3pu yin magn*su6 .lzzi3j ;p4 vgqyitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pi odfjfq/jue:.ow9-v, v2l y 4laced near each other on an insulated table. Which statement best y ed f-/ v,:9u4vojwqi.f2j oldescribes the electrostatic force between them?

  Two charged objects attract each other with a certain cyn-x5( llzkpmjup u8cakqa 92x9,,: force. If the charges on both objects are doubled with no change in separation, the force betwjypkla2xzkx(, c 5:9u-l qm ac89nu, peen them

  Two charges are separated by a distance d and exert musv7t hietd,5+t :olr )tual attractive forces of F ot : 5)l7rdo s,tivt+ehn each other. 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.y 0gdpt4tu;cb *(idy, What 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-fourth its original value? The force is now eqdb;gt*( u04d yy,tpicual to

  An electron and a proton are separated by a distance o 8ato6cku f;tk* p0ru(f 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed ufot(kkua 68;rtp 0*c next to the first electron?

  An electron and a proton are separated by a distan6 liqa hc7an;-r8cjw7ly kvr8v , v81fce of 1.0 m. What happens to the magnitude of the force on the fi8faj1 kq -;c7av r8wclvi6nry7v ,lh 8rst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a di rtk5jsw/wg /.stance of 1.0 m. What happens to the size of the force on the prottw. r k//sj5wgon if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center 8u3oqizb6 pb x:y29q qdc0xj /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 0qo bq9z2 cdp6iy8xbj3:x qu/-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 +Qr- 5q + 9y4p7wdz*lnmyp .wyznd;am: s is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic fowad*54+r ;y wnmyz.7d ymnlp:9pqzs- rce 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 followin27h(qfwm;u - xsbcmr76b m w.ag is not a vector?

  At twice the distance from pa5u9/z,,qi/q s-f z kb+cgoda point charge, the strength of the electric field

  Is it possible to have a zgc54 1sp zrb6oero electric field value between a negative and positive charge along the linocz 4pr15gs b6e joining the two charges?

  Is it possible to have a 08lpe6j,tqmv2 y2sfqrn-i 5tzero electric field value between two positive charges along the line joining the two -sqm6npevr25 ji,f 20ltqyt8 charges?

  Electric field lines near psshpzf.n 8 +)ktitive point charges

  The electric field shown 6kdjiqo+z ;ti eq. :+hz 8kz9* voc7uc

  Can electric field lines intersect in free spacee-l4z :y5fbq*p3 - w8 ppqmrjk)k) yea?

  A solid block of metal in electrostatic equilibrium isz/i-o rubb00tbfiy+d-hi hb -c 8:p:k placed in a uniform electric field. Give a statement concerning the electf+-kbb-iutz0yi:bcrbo/ dhih 8p 0 -: ric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters rxws 68tg;h2p are each given the same charge,8 hxg t62wsr;p the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on af1h dni ,qd.,f wooden table in a region where a uniform electric field is directed straight upward. What can be q.,d nfdh1 ,fisaid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anvq,z cqnk74)s ) qh:gj electric charge

  A positive point charge is enclosed in a holthi03 / b+3lwk/env w gf7pv;blow metallic sphere that is grounded. As compared to the case without7f/w3vin b;gpl+3/0bhvwk et the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduq cjj3pnl t-z6-*+ fjl nph47mctors in static equilibrium.

State Gauss's law.

  The charge carried by oy) lchtf484 n:b; 9yroo x*2:knwnsjdne 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 t,hmqh)ptk8k9kb1ff z .8drystejua *n4 46z 8han electrons does this piece of plastic hafkrfbju8tq4 md8)p y49z8nzha.ts* 1h6e,kkve?

  What is the charge on 1 kg of proton c;l;nww1ks7;p o2scv 8 n jghlb.16xqs?

  An atomic nucleus has;nst; q- y*xsz 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 valuli(5kpgd aapx( 7nr/, es of 2.0 and -4.0 mC, respectively /xp( rpk,l7a5dn (iga. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwl4pl h7.v3drp wt kgv3q :/)hbeen them is 1.0 N. What is the q/wr: d 4pv. 3hbvl)gp7tk3hlmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Howzha98jtt5yi y p0, j0v far apart are they?

  The force between a j q uc6;x4b m,:sh9afu4icwb0$30 \; mC$ 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.n3t:it :z+0uihcp mvnm kf/04 If they are moved to a new separation of 8.0 cm, what is z3mukc0:n pnith f/mt+i 40 :vthe electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first ch jdorqp58)+ roarge is at the origin, the sec8r oqr+5jdpo )ond 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-axis. A charge of +2.0 m5k.px 6 elsvxhrh:q85C 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 chapsv xh5r:6qxe.5 klh8 rge at the origin?

  Three point charges are located atcm 4n ns6; xu:ugvj0mx/h:4x qgi16i h the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -x 64ux/jnmh cq4x:n6hv0gi1m: u s; gi1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center .)dvr(tomhv 1 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 positiv) v.tdm1(h orve 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, 0.1be rbi3ruo qu-9fau tyr79(3. 0 m); Q3 = 5.0 nC is at (0, 0). What is thereob(tya3- . uuqf3 7r9b iur9 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); bxv )dtkwtuu22x(66 u Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC dut2tuu 6 (vwk bx)2x6charge?

  Three identical charges of 3.0 mC are plaota*ohuke0q9 j5* h/ui8hi7ija.x r4 ced at the vertices of an equilateral triangle which measures 30 cm on a side. Whatejraai j 4/o i htihq98hx.uk*0 o*5u7 is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whici ys 6og;*cdkz0 j6vf,h are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge*yikcgzsd,6 f6 jov 0; 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. k+ ka p7t33vhtWhere on the x-axis ctha3 k37tkvp+an a third charge be placed so the net force on it is zero?

  Charge +2q is placed1 k )/ 7neoz-vx+ inp3hjpc6hz at the origin and charge -q is placed at x = 2a. Where can a third positive cv1pkh jx7on /ch-znip e)6z3+harge +q be placed so that the force on it is zero?

  A copper penny has a ogzk/lhf(5o r q3)orsfb2 ).hmass of 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 agains )pd:x imps4,dt the force of gravity by the attraction of a fixed prot, ppmi4) dsdx:on some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poi9zcsv 7mrftx p;8m/map di8 d(9jz/-int by nonconducting threads which are 30 cm long. Both are given identical charges, and th8pizi-mdmma9j; d(z 8st rcv/x 9/7pfe electrostatic 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 ajh*; k7 rrk-3opvt3ds charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from ro3dj;prt- kv k37*s hthe nucleus?

  What are the magnitude and direction ofk :4h xk,epir)xn:a2z/ loxi ; the electric field at a distance of 1.50 m from o ) ni;iz,x ka: x/pxkl2er:h4a 50.0-nC charge?

  A 5.0-C charge is 10 m )d 4:k 4yyhdzyfrom a small test charge. What is the magnitude of the elec4ydyk ydz)4 :htric field 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 the -n(yf(;gh q-ejtj jh5electric field?tyhhj5-j;e j(-f gnq(

  A 5.0-C charge is 10 m from a small test charge. What is they5jj:p/hsj( /t9cble magnitude of the force experienced by a 1.0 nC chjp /b (lhc/ytjs ej59:arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a d2vvn qaqclvr9 e23,6:lz6 i g4 fq,itwistance of 4.9liva3lt64vq:n r gc, w26q,f izq e2v0 m. What is the 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 s3o1m2t fry2bif j dn12tick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fmd2 3f2bt2f o1jiy r1nield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargey(z ew n63piss/fhcwa93qj1 d5g-o 2u is placed at the 50 cm mark. At what point on a line joining the two charges is twos6nz 2h5gpeq3y/-1a3(u9 cwfj s idhe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 8x2 mjpoy9ad r+fuqdnk+66 .z0 and x = 0.20 m. What is to6rk.xy p jfdq9z+a682n +d umhe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corner u5b/fx:6b dvst.nqx)s of a square of side 0.50 m. The last corner is occupi6 / vbn:xxbf)ds5u q.ted 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 corners ,9cuv0s dn3: fx8v8 rucds -hjof the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); v3cfurnhd sd8 98 j:,0x-cusv +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 it is placed murzpbh /7;j:in a uniform electric field. What is the magnitude of this ep:b; hzum/ jr7lectric field?

  A particle with a charge mmwk-x0n* gpbsh8ueo )54m4l of 4.0 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 b yiuy,utcg .z35lo k 8n*)h)i e5tpv,mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge musbiek.3oh itgtpnyv)5,*, z u8ylu 5)ct be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carri ju,gtfzt uw,k a:j)5(es a charge of -2.00 nC. The ball is placed inside a uniform electricfug5az (,t)ku jt:j ,w 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 5j+/zt*b ek kp0ceo/zmC. What is the magnitude of the electric field 5.0 cm fr ek//kzobz*tc0+epj5 om the sphere's surface?

  A metal sphere of radius 2.0 cm carries a c( d0*3pqm pstbharge of 3.0 mC. What is the electricb tp spq3m(0*d field 6.0 cm from the center of the sphere?