State the law of conservatml*3 t.,j/ko 1fba fiyion of electric charge.

  Is it possible for two negative charges to attract each other?yqj90rujf49x

  Is it possible for a positiy iy5 nb:*ay(7rdqy0bve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of stj59 b3hfok wrlav2d1-v 8x qdj1: g:dilk. During the process the glass rod acquires a po9vk:31 2 djhw dq58rld1jtxgf - bv:aositive charge and the silk

  A proton carries a

  The model of the atom shows d1o2fot(w99v6grbsxvs 8, za a

  A neutral atom always ha;n dhr39lz,io s

  An atom has more electrons9y6kw oafp 98 :6gulej than protons. The atom is

  Materials in which the electrons are bound verycoei)g+ c hl9 ; :y-c1leej7w,g ncgd3 tightly to the nuclei are referred to as g g7:l1 9jel-cicd,;)h3wnc+ o yecge

  Materials in which the electr sq7bp7:kw0uefq; x(dd*5p 9 dkt2 deqons are bound very loosely to the nuclei and can move about freely within the material are keq depb52*fqqud790dt(skd;px w7 :referred to as

  A negatively charged rod is brought near on,s t6x1 po,o4 h3dpj)slxd xh8e end of an uncharged metal bar. The end of the metal bar farthest from the cha 1htsdol)x4p x 3h,o6,xdp j8srged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrall0/,q7v ba tipoxm. ;w. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whic/.v0wplq o7,b;mtxiah statement is correct?

  How can a negatively charged rod charge an electroscope :mzp:b r6ujf-k.rh mpl *h+0ypositively?

  An originally neutral electroscopepm3433kh /uvxio /87 wzeatgn is briefly touched with a positively charged glauk n h /gz/xtevpm8w3o4i73a3ss rod. The electroscope

  An originally neutral electr**v3mvfsdwc(xh r 8y, j m3f(dpdx4s .oscope is grounded briefly while a positively charged glass rod is held near it. After the glass rodm.fw h(, v*f3msdxvpc4rd3 8 xs (d*yj is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sep) -j *t9om.ret3hdan8-j qacgarate. Then a negative object is brought near the electroscope, butc a3ghno8.-j-eq dtrja)*9tm does not touch it. What happens to the leaves?

  A large negatively chargedsimr p+jxm(6 wnbvx ux;).7j+ object 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 ;xpsm m(.6 xn)jjbw7 xru iv++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 x-fv md:9u5wjy s9:bb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge ismt zhjy3fy9-pvobx35e 2q g a;/l 02vk larger in magnzqj ph20m3x ge;t y-vkf3 lby2/a95ovitude than the second charge.

  Sphere A carries a net charge an: son*o)p,btdd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes thn pbt)so:*od, e electrostatic force between them?

  Two charged objects attract each other s w2:fgs/zxn8 with a certain force. If the charges on both objects are doubled with no change iwn /zfs :28gxsn separation, the force between them

  Two charges are separated by a distance d and exert mutualm1f f5v+dh: d+n5qblh attractive forces of F :b1ffdn h5hd++mq5v l on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrdfp9hkkl6vip; r/6d8lv2;8(ee ki qpact each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separar8p(e;kkid8iv 6evl;2l /p h9q dkp6ftion distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton ar4 imjle. l9oqz 3rt+5c+)erl1) ksctze separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placoi cl 15rtctmk3zq. z e4+r 9))+leljsed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tu6 9f 1;kc6 ys0sfzqjro the magnitude of t1 6 c09zsjfrqu6fy;skhe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distd. qvte 4d/gi 7s8aolgv (oo/.ance of 1.0 m. What happens to the size of the force on g . .aeovvod i/q d4o8lst/g(7the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at tadtwu/cm.k/4 7 pl1oehe 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 corners of the square. What is the magnitude of the net eleck4p/ owldme7u t/.a1ctrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the ce fi rnsesrwmgjk4b p69w*0)t; 0coj,)ntroid 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 the force that acts on the rkg 4;,j rmwj bct6os0*pn )e9s 0)wifcenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vemhamk z.(y:; 6w e9h7ckw3lov ctor?

  At twice the distance from a point charge, the strength of e md,cd5nk/g* the electric field

  Is it possible to have a zero electric field value between a negative and 1ikc axt: 4h,;7krccvqpx )c7positive charge along the line joining the two charges acxc)p cr7kx4i:,htq1ckv 7; ?

  Is it possible to have a zero electric field value between two positive c)swc7eu6jh h 0harges along the line joinieh 7u 6ch)swj0ng the two charges?

  Electric field lines near psitive pointe3fuq ,mq* wleu63hv- charges

  The electric field s 3 6+2mr+5hqymgewmb ;gtlv0khown

  Can electric field line ismal3t v73j7l,mj1j3 o 1jpos intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifqzsqt73 a ny)18zhu bx4lq5 ;korm electric field. Give a statement concerning the electric fiel38un4yk1tlx bhsqz;z qqa7) 5d in the block's interior.

  If a solid metal sphere and a hollow meta n zjf yinm0tghhk, g12(,5.zjl sphere of equal diameters are each given the same charge, the electric field (E) midway between the center an itnf kz(.mj, jn5 1zhg,0g2yhd the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform e4 lex07k ;ylyelectric field is directed straight upward. What can be sal0 yk4x;yee7lid concerning the charge on the block's top surface?

  If a conductor is in elect 6.nos -vs-uj*99htjp 2sivefrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metalqq nr. k--98mfx mmi:au-(up zlic sphere that is grounded-p-n i9qfmxar.qkmz:m u-8(u. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statice(s 6.r 7v h:1r 3mdy/jnpyjoc equilibrium.

State Gauss's law.

  The charge carried by one elmzd;+hs--9h1sa2oi uy g:yo dectron 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 mam 3f9 efk;igpx5dl5f;i ar/f6 ny more protons than electrons does this piece of plastic;i655fxk lf fref/a dmgp3;9 i have?

  What is the charge on 1 kg ix m..3gu9wdgof protons?

  An atomic nucleus has a charge of wh7q +fo(zz7m57vgffbes;3 u $+40e$. 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 -4.0 a4 kd84o(e-gbfwcm d:/e-jwcw m ;qu(mC, respectively-/w(-bfkeadwdc u; cq(o 4em:g4w jm8. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 c;c +sawga7v 5 k28eiam from a second charge, and the force between them is 1.0 N. What is the magnitude oa 8ac5ik ce;v+a7s2g wf the second charge?

  Two 1.0-C charges have a force between themfv.bd nz-uiml:- d m4(l y17wj of 1.0 N. How far apart are they?

  The force between a ikow (kj +x:-5hzi: ux4i :/q3bsexuy$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apajmb), rv20y*5puepf drt, experience a 1.0-N force. If they are moved to a new separation ofe5b vmu)p0*ypd rf2,j 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed 15 8ihr); 8iuhitpwvm 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 direction of the electrosu ith8 1hmiw)ip85; rvtatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A char3p**wu+ hh/ 6bmlvjl qge 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 magnitudp vlub/ml*3 q*jhh+w 6e and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00o)d-kx8c 8a8atf.x to mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = .aaxf8-doxk) t8toc8-1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point hiu+o fu)rq(8charge 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 cente)if8u q(ouhr+ r. 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)x5ul0bbq)n : o; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fo5:bl b)uq0 nxorce 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)6ifl y-p yp1k); Q3 = 5.0 nC is at (0, 0))1 f6lpkp- yiy. What 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 4mv ubex9:yhdmhha2 5))x k4dof an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force hhx k 25uxmvd4)bd9 ):yh4ea mwhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepakc (4f6rl)j, hu;a xqxrated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the elec4j6aqlx)fx;(ku c ,rhtrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin ani vuuye462cp*.ya4 gr13hq i sdsuv-5d a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a i sqsuupiuy4 g h2-y.eva*15c36drv 4 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 = 2a. Wh1h omccwyovqfp6 79aefre92 ao,4iyo3+z )/kere can a third pzaf6hfo3 /e o 9m2yyi a+ ,wpvecq7)co4rok91ositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g ez.papbnwgs()opmuq-) r,2/ 99 tifq . 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 attrac i( sk7 k/)sozl;pgs5ttion of a fixed proton some distance above it. How zkst5oi) pg(7 s/s ;klfar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinvpc s)pcgg4u4z*:x q5y(*v xp g threads which are 30 cm long. Both are given identical charges, and)s u:xzg*cxp y44*5vp p(cvg q the 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 a charge of +40e*3emsb . d /bta)kqb3k. What is the magnitude of the electric field at a distanbe) mqk/ .bkb3 sdta3*ce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.jacj5n*p*o22t 9o kzv 50 m from a 50.0-nC char za* t2k5jo vncj9o*p2ge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the em c.oku8 ; kq7*hksw xa(k:u:ilectric field at the location of the tesxh u*s :c:i( 7k;maw koku8.qkt charge?

  A 5.0-C charge is 10 m from a small test charge. What is.l -g nuphg7w3 the direction of the electric fieldhn3gl7 wu.g-p ?

  A 5.0-C charge is 10 m from a small test charge. What is the magnmpvrvti9p u.52kl t-8 itude of the force experienced 8p.vrp tk9l5ti -mvu2 by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are snefomue-q 2+.eparated by a distance of 4.0 m. What is the el nq2-.of+e mueectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter lj bcrgpan5/0 )6k8m fq-or5tstick and a -4.0 mC charge is placed at the 50 cm mark. What is the electl58ba6/0tm fgkqr on5jcp)-r ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 o:6zebu bvi;y,c ruom9q :xllo)9 :+ocm mark of a meter stick and a -4.0 mC charge isbv,:9o +z l)l 9qybxom:uo;:ei6ruco placed at the 50 cm mark. 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 hxg;b:lp g./bzuik u 1x j5:0ax = 0 and x = 0.20 m. What is the magnitude of the electrici blz0x::guxbkg/1 a h 5u.pj; field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 tx3ixj+8 st g-m. The last corner is occupied by a -3.0 mtx xg-t8j3i+s C charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on y13 b z:ibg c+kxg fl:jd39gl3a 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 mC at (0l13gy fd+xi b z3c:gb:3gkjl9, 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 in a uniform o: 89p-d.c2s x8qkj,sfch0wva ym sew(k7y8l electric (:.h8 sk8w c7wf ce ss2,9-lo qy8ap0dkmxyv jfield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 m4.j0jo+ xr e1 djlys4wC 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 2p wj.:m c3yiiplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for 3 2w:m.cp yijiit to be suspended?

  A foam ball of mass 0.150 g card7;mfxflqv8v*fc39s )v b69v dtdy)fries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of97d yb d))xfvcfvf9f;3t8*lqvsv6dm 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. What4mt 84o djogr, 6ycpr7 is the magnitude of the electric field 5.0 cm from the sphere's sur,cmyord4go6t4 8p 7jr face?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. -wvv6tf l8-icwr z8q)s.*lqbWhat is the electric field 6.0 cm from the center q. lf-vv6z )* irc stwb8-w8qlof the sphere?