State the law of conservation of electribs 10cvufgd30 r+q4 zac charge.

  Is it possible for two negative charges to attract eac3k-eix5o kmu)t(.gf ve-vzf uk .ton.+z.p u:h other?

  Is it possible for a positive and a negativej9 *i w*.mc x7lsqi/yh charge to attract each other?

  A glass rod is rubbed with a piece of stld*(ec : h eop8u f5t1gk-z3u-kgzi+ilk. During the process the glass rod acquires a positii(zkgut - *o5luzg -1hp3fte:8 e+c dkve charge and the silk

  A proton carries a

  The model of the atom s;yi 6te(tk1q (ylx:j fhows a

  A neutral atom always has)snqeg sg/dx vl/)wo- 01cg d. zc4s*x

  An atom has more electrons than protonsub. ni0s -jm wndi..i-+s :yrc. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refce ave* whh9(-erred 9ca*w-eehv( hto as

  Materials in which the eiww.(3r+xgivtprj, 2 lectrons are bound very loosely to the nuclei and can move about fre3 t2pwg rijivw(r, .+xely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.d386og5im(aqt (kkh y The end of the metal bar farthest from t 6k m8at(og 5ihdqy3k(he charged rod will be charged

  Sphere A carries a netjw4)- ro *onr9sc,s*l2o hoxcslb-0 n positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundohr-0*o)sl*- 42sx9s, rlnojc c wo nbed. Which statement is correct?

  How can a negatively charged rod charge an elec.k e5m*vcoa-xhr 3 5h uyq99w j9er9outroscope positively?

  An originally neutral electroscope is briefly touched witdd ,l2zu-di b:ljjp i3.p/mx8h a positively charged glass rod. :i8pb z-dx, u2m./l3ljddp i jThe electroscope

  An originally neutral electroscope is grounded briefly while a positibwfw2;acp e79emjw*9ugpw, n ;9up 9jvely charged glass rod is held9wm;w e*pwg;9cn9 2,9pjpfjaeuw7u b near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separr,ttk4jpgjnaxra-857 jo j81 ate. Then a 8-jg4kjrjt, 8ar ont5p7jx a 1negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on e x0idm8yy*:w y(scf1s fzt91 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 first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negatfe tm:90wzdc*(811yxy fss y iive object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constantj6/)zlvpiw4uj7 bcu / $k$, which appears in Coulomb's law?

  Two charged objects are separa q2rdgj6cc/y;nx w--tted by a distance d. The first charge is larger in magnituy;cqx wcr-2n6dgt j-/ de than the second charge.

  Sphere A carries a net charge and sphere B is neuzs b61fs4utq fio.o 5js5/m/ atral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force bso/uf.izq 65 15s4s /mf otajbetween them?

  Two charged objects attract each o:e)cmfjsroq4j5 6l0 ,8uomys- kn x 8zther with a certain force. If the charges on both objects are doubled with no change in separation, the force between thure8o x 0sq m6 4-8lk)nj,fo5:cy jzsmem

  Two charges are separated by a distance d and9p , 1h6abop-d9ce2xi gujx(c exert mutual attractive forces of F on each other. If the charges are sepajdocch xe,p6 9xg2 1upb9i-( arated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force (k,nri*b nj0i (jlviy.c : 2o*y*2gokknp o4mF. What happens to the force between them if one charge is doubled, the other kbkgip on*c4y .:o*(vjjr2ik0n2m(*i oynl,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 proton are sepat e(-e/2mcj yv6j0t r :lhtwr6rated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second(t6 rl-j w ve62r :ey/0jhtmtc electron is placed next to the first electron?

  An electron and a proton are separated by a di2+ uociek/ ok*tk7* emstance of 1.0 m. What happens to the magnitude of the force on the first electron if a second e /om7*e*i +kcoket2ku lectron is placed next to the proton?

  An electron and a proton are separahyspd:l,(mw1k20flln - fh4w ted 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 m closer to ylf0nm,wl(:s hd4f-h1kpw2lthe proton?

  A point charge of +Q is placed /z(qam -pij+2t jnrf3v6n pt -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 corners of the squjp mfiap6t-3 (z-qt2rv+n nj /are. 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 placu ztzfydzm3xa993( (s ed at the centroid 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 3d(9( x9 mtzya3zzfuscenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vecto)goiqkg ac-,b q09,bj r?

  At twice the distance from a point charge, the strength of the electric field)ef, j5 sgtc.:ed3x gw

  Is it possible to have a zero electric field value u j)l, a1nq3hjbetween a negative and positive charge along thh3)jqu al1jn, e line joining the two charges?

  Is it possible to have a zero eleh15g ibbw( wvs6)wqz ,ctric field value between two positive charges along the line joining5 z w)bsgi1w6,(hwv qb the two charges?

  Electric field lines near psitive point chor/f ef8i v:zx8: )xdrarges

  The electric field shvhrf4u7c 8m sh:*8tjpown

  Can electric field lines intersect in free space?h;,ocjc,2s2h fl*hz -f5 id qz

  A solid block of metal in -2e9b ;v+clbx qf8ujb1ac 8 gvj 8nt;gelectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the gbal2g f bbq8t;xj;c1ej98+ -uv c8n vblock's interior.

  If a solid metal spheral1.q4l vrkahs2 95a we and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the suhqa9 w1krv45l2.a aslrface is

  A cubic block of aluminum rests on a wooden table in a regioqpompg4azg 8e(e0;ed 1lg k 4;n where a uniform electric field is directed straight upward. What can be said cq(pee ;4 g4og1p8ed mkgaz 0;loncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neart,su* itnpph/m(+e) s an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gg hos8k plyoo9968 nk/rounded. As compared to the case without the hollow sphere, the electrk 8 kn/89g9yoo6olph sic field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriu eun w;d *t22w-jhio2um.

State Gauss's law.

  The charge carried by one eleq) q)z3pft;6-e lrzbvctron 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 xcn8 f(,nwputw:h94 y a net charge of +2.00 mC. How many more protons than electrons does thisc:u9,h( xpfnw yw48nt piece of plastic have?

  What is the charge on 1 kg of protonsx 7mso94xp xs:?

  An atomic nucleus has a chalu-p;j to3ul b3ecyy .xt8u59 rge 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 valuesgxfo6fur5 /+df,kn)o0 h3u pd2e vlm0i4c * yz of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between t5)f uv*hu ycnxd2fdm zoo0k/fr4l0 ,6 gpe+ i3hem?

  A 1.0-C charge is 15 m ffi)vii 8:uky)ern 4,j5 d5o hyrom a second charge, and the force between them is 1.0 N. What is toi5y e:8j,iykd iu4n)5)hv frhe magnitude of the second charge?

  Two 1.0-C charges have a force betweeyp2g ktnceq n4:/.6bg n them of 1.0 N. How far apart are they?

  The force between a 8fps(ct lcd/-l qy.v;y b +ziezeh(8 0h(cq9v$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2qs*g70mzlq /l7ltz i:n wg d2+.0 cm apart, experience a 1.0-N force. If they arlm z20q :+slz *id7w7nqtgl/ge moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mv.r:;a hs69 qwq1y wx l/fyb*(uc tej*C are placed 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 electrostatic force qvc r q;:*ytxe(a9flu jhb/6sw*y1.w which acts on the charge at the origin?

  Three point charges are placed on the o bt6(.7 l4rxfj 3jiaux-axis. 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 ma46l.atfj jr xb7u(3i ork. 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 positio8sj 7d t+1noblns: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x1jo7nlt+s bd8 = 0; Q3 = -5.00 mC at x = -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 chauve9i 5dc n)-f+ 2rbearge of -Q is placed at the upper-left corner. It is obbu n a+52)i-dervc 9efserved 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, tqbp9uh5 sog1jjw8); 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force os 1 )5ojjpbuw t;qg8h9n the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, sc ygzzhcs,5p nov i(7;ep/lx2,ut, 3*.uqzz 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What (2us*peu y/ onlzg,zsxtzcq5v hi7cp,,.z3 ;is the direction of the net force on the 5.0 nC charge?

  Three identical charges ob)*6 gst xyn8bf 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cy*6t)bx s8bn gm 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 separats(idv: z .5tja3 4 jfgla*0gw6pxqb4xed 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 electrostatic forc:as l4x.4f jbg j( v*g0wdz5tq6a pix3e acting on it would be zero?

  A +3.0-C charge is at the origm;8r0 agb)uyx in and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is z g0rm uby;8x)aero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where can ms:o /ba( tsz97t sgxmjr g91;pin46g a third positive charge +q be placed so th9a;pb s6(nm orj7t ix4:g/1sz9ggsmtat the force on it is zero?

  A copper penny has a mass of 3.0 g. A total 0zeph- l 5f;omof $4.0 \times 10^{12} \; electrons$ 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 again y+f3qtkuzh 6; *x4pvjy3oa,sst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is th js+ ;zpt oq,4xyya3*vkhu6f3e proton?

  Two 0.20-g metal spheres are hung from a common point by 1vlc /sp vq6wv) 1hph7nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces tpls)whhv11p 6/qv cv7 hem 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. wm(fm 9 g86knxwx 5ata0bj4a8What is the magnitude of the electric field at a distance of 1.0 jw(x6a 94mkg5 w 0 8f8bxaamtnm from the nucleus?

  What are the magnitude and directio f((ju dazq7uth7tr+ -n of the electric field at a distance of 1.50 m from a 50.0-n(7ju7zr-d a +f tt(huqC charge?

  A 5.0-C charge is 10 m from a shyg6wo 6 bj52z6myiln.vqq 8-mall test charge. What is the magnitude of the electric field qi6 65.zbgyhw8lv 2o6-nqmjy at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wh5(,qz9lz0tjnhl cvr5at is the direction of the electrirzzcl ,q5(t n 9jh0vl5c field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit8 -flf:*iz7j7z lbrd x *whw2cude of the force experienced by a 1.0 nC charge placed at the location of the test charge? bfz :8jziw7 l* 7ldh-fw*cxr2

  Two point charges each have a value of 3.0 C and ares.qz ;c1t2kgl9xvr g; separated by a distance of 4.0 m. What is the electric field at a point midways;.rg2;l qz9 tgc1xkv between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick 8qw*z k c681ninp5sob g+s)r fand a -4.0 mC charge is placed at the 50 cm mark. What is the electric)1f gqp5 wr88kio z6*bn+sscn field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of jka o fm22 wnd+uzg3a(0 id(i s:zvm-/a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whaaja2os-3 v 0+ u(i2:iz/nd fmzk mdg(wt 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 place*k:mtd; fu 3aed at x = 0 and x = 0.20 m. What is the mag*:k;eaud3t fmnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of kee(df oxj4ur+j m:1n4aj4l. q m99p/*mczyeside 0.50 m. The last corner is o.fe+: (4r4x m4ulykm9pej znjdc/ 91 o*qam jeccupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which i*f 14fk,gh 2rau3+xx5mtd sqps 1.0 m 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 mC at (0, 1). p5 1f 2qartg*u+skxmdx34hf,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 w67z4z21pqj;km+ ng53 urxfclpm wea( hen it is placed in a uniform electric field. What is the mag 1 k2gfp ;6n3wu( xqp zz+cm5j47lramenitude of this electric field?

  A particle with a charge of 4.0 mCizc4a4eh3x:v jxfl1j0 3xr;wel v b,( 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 of 6000 N/Cpln)73 svn4czg yb)) zu qtx9)27uh pj* )quga pointing downw3g*2lphu))p u 7c)gyn) 4bqsquazz97vjn x)tard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 5ladri q5ev+ x-ph;kg *6rmm9g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of grav q9ke 5+p hxd5rmm6r-ai;*vlgity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 5 xa5yds-rqhyi /l /q4v -;bkscm carries a charge of +2.0 mC. What is the magnitude of the electric fiely-hixvs /s-y kq a; /5l5bqdr4d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 - 4tf fwgne9/acm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the egft-/f4wa 9 nsphere?