State the law of con bcv2c2dtl1u 1o 07)mxsf4--v lwrizaservation of electric charge.

  Is it possible for two negative charges to attract r p2ux:08+-e;fkn / zincec sqeach other?

  Is it possible for a positive and a negative char(i dkj;1zfu 0ciypj) 4ge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process lkq/lh (94 gfkthe glass rod acquires a positive char 49lkfgql(kh /ge and the silk

  A proton carries a

  The model of the atom sho;dg;a8+ re xknj4(v 0 otc4kptws a

  A neutral atom always hr kn, x+0(bpbcas

  An atom has more electrons tha ioi :iic9ic,7n protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referr,19f fk- 3ij)bc .pao 2t0c(mjhqo algedca2bojgm c f,il3q9h kjf-p)(o0a. 1t to as

  Materials in which the electrons u)qs :,/ xmv wr15xbyub7ma ;oare bound very loosely to the nuclei and can move aborm);57yx vboxu 1wsbqa,m:u /ut freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thexgp:v 2n8e c8c )ftexu8tn8;r end of the me verct8u;xnp8 88gcf2texn ): tal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tu9 v oms.mg+r5k)zx9c iqmbt, v ra:(4hey are placed near each other on an insulated table. Sphere B is briefly touchedgivx a s9mbt9) ruokz q5+m,mr.4 :c(v with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chaz:omfivy2b i5 lc) 77 wgfco8(rge an electroscope positively?

  An originally neutral elehr2brmpztmxj458ay ()i xjl b.6 y;)octroscope is briefly touched with a positively charged g)j4ompym 8b5x(rhl2 ;ijy a rxzt6.b)lass rod. The electroscope

  An originally neutral electroscope is grounded briefly v6ifs s*: ncx e+a7h3ewhile a positively charged glass rod is heldhnf*e vx3 :ai7e 6s+cs near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Th;mk1j ;urdwxrc;jju,.u6 b. s en a negative object is brought near the electr.rm.j;usj;dj bx ,1;uuwc kr6oscope, but does not touch it. What happens to the leaves?

  A large negatively cb .t2++lzxdm tharged 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 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 ed+xz+2 ltb .mtach ball?

  Charge is

  What are the units of the Coulo,k3 xhy:lk d5mmb constant $k$, which appears in Coulomb's law?

  Two charged objects are seaa5by80 in- t+dwju+kg :,xjh parated by a distance d. The first charge is larger in magnitude than the second jg d yxa8ujain 5tkh0:,+- bw+charge.

  Sphere A carries a net charge and sphlm e sgn;3dp,4ere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betwee;, 4gnlep3d smn them?

  Two charged objects attract each other w:1yoihurzzx87 gk12v ith a certain force. If the charges on both objects ahgokvz:y2i11r 78zxu re doubled with no change in separation, the force between them

  Two charges are separated bgr-oo2tv.d gu 7re(4 cy a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what ar cgd(e-r org4.o2u7vte the new mutual forces?

  Two charged objects attract each other with a force F. What happens to dh9z( +jfx y/jlinw 7t,5t5lj the force betn lhyjdt+(,xf/7 j i9zj5w lt5ween 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 equal to

  An electron and a proton are separated by a distance of 1.0 m. What happ;o tu*tb:z aqqe 11+ 2nd8bknbens to the magnitude of the forcek*bzqoatq8 n+b: ;1t1n2u dbe on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distanc4 v)hqt *inbr4e of 1.0 m. What happens to the magnitud4tr)*n hi4qvbe of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepaxmw 4-74obe l2m.rpoisk 9)gt rated by a distance of 1.0 m. What happens to the size of the force on the proton if the eles4m-74xtokoew.pgl9ir )2m bctron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point c4zwhn 5si0e +hharge 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 thr he0 s+nwhiz54ee 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 the centroid of an equilateral tri1 g63.bnegqe . fyye5eangle. When a second charge of +Q is placed at one of the triangle' eq6f.e3e byyg5g e.n1s vertices, an electrostatic 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 vector? 7 ,y c.vxt1(b;gtgdrx

  At twice the distance from a point charge, the strexz gpl 0v 06mg:vfv//ength of the electric field

  Is it possible to have a zo 8+0izo-f*x4un qo 7jwrtrb) ero electric field value between a negative and positive charge al+noxf8t o)rujr0qziow*4 7 -bong the line joining the two charges?

  Is it possible to have a zero electric field :yy 3mv; (jsxrvalue between two positive charges along the line joining the;3 vy:r xjs(my two charges?

  Electric field lines near3n :nog qh),9aa)/)bxmqzp -l,k wim f psitive point charges

  The electric field shown p)4hu j7g3bkrm /bg bg4x,g1 w

  Can electric field lines intersei t.fa73y s.w9xqulf jmf3q,,ct in free space?

  A solid block of metal in electrostatic equ /av9hsx4 wp ai-+n/w0drwv0 krqq(q1ilibrium is placed in a uniform electric field. Give a statement concerning rwrqh-iw/+kxq0p4nv/(a9wv1ds 0 qa the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each y v4: jp(wy+4a 4ydsjsgiven the same charge, the electric field (E) midway bet+j44 jvadyp 4s:wsy (yween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifoeg4sa,k:q;iga d6b;v3bg ;vs rm electric field is directed straight ,gs6;;bvi;a3kvq :sbd4gag e upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ej+:(rdd7n lh mlectrostatic equilibrium near an electric charge

  A positive point charge is enc7rj0,q yc)tqi b:) 9vgc,la tclosed in a hollow metallic sphere that is groundedt, l)abytjc qc:r)iq9c,7g v0. 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 s+(+frd rfr8f8v yl x5gtatic equilibrium.

State Gauss's law.

  The charge carried by one electron *a/cdyk .n(qxis $e = -1.6 \times 10^{-19} \; C$. 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 proton,) ex4ei5e5v kgn /(xwici*ve.c;pe ys than electrons doesex,e545n;v )iy i / w pe(eic*xg.kvce this piece of plastic have?

  What is the charge ozxk,z;cd-mf -u,n;sjn 1 kg of protons?

  An atomic nucleus has a charge o a:l,wvxbw:b p-4-;z wcv ce4df $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, hajqhzgd j.15ucx uqr-c)dcn;+f *bo- 7ve charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betcf ;.1-+ o*ucbdzhx-r5jgdjq7cnu )q ween them?

  A 1.0-C charge is 15d5p7 :utg2ne,o gvs/ snmwa 6- m from a second charge, and the force between them is 1.0 N. Whatg75 nvpd s, /msen uoa:w2g-t6 is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. 5kaq9w +jn1ik0k e(dfz3cwym. rn7h1 How far apart are they?

  The force between a z(0(iaca mt7 4wtjx3o$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparabhwi b+98t tyf-et+6t, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is thtb6ft+w tebyi+-h 8a9e electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The4to/) 6hucej um l)was*j4ka) first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. Whatj4kl)staw o4 uc / *e6)auhmj) 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-c1* -)sav tzpuj(ldn ;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 mark. What are the magnitude and direction of the electrostatic force whj t(znd);u*la1csv- pich acts on the charge at the origin?

  Three point charges are located aun )8ar.ogaq -t 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 = -1.00 q -).nrauao g8m. 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 k)h s d* ,o3ltjbt6byd-sd+(8 vt fj61mpy7gd, and a second point chaf,tt jskdh8yd)b d 7y p6s3t-*1gvm(o6j+bdl rge 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 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, 0.10s0plp;j q*ixf6f.lz o(co( *z m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge?fx zo6f**;(pjp l l(ozqic0.s

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at 9f((/0d)h,b u vphgk m mh/ine(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whatd,hf(/ k9ph0 /(g imu ven)hbm is the direction of the net force on the 5.0 nC charge?

  Three identical chargesmdh6 :+d 6 )1a evma2iqi*:d+ovydz kf of 3.0 mC are placed at the vertices of an equilateral triangle wdq+: z+iefvhm*v )a6d1kamdi:d 26oyhich measures 30 cm 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 ds 1pdz*qj.cy.wd4 m0 by 3.0 m. At what point, on a lijzw.4dp.d 1csmyq 0d*ne 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 v6nd+3wa 4igua +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third ch6wnig v4+ ua3darge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pl oja7i*5nd)1iuazx 4ugm2ke1 aced at x = 2a. Where can a third positive charge +q be placed so that the force onna ugei 151)a274ji *xozmkud it is zero?

  A copper penny has a mass of 3.0 g. A toyx6/ (ix hcx7mnjp5 n;tal 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 qfvd l b8v-mqy.:dph1 +d3 lfjf33lmk3)8e eeforce of gravity by the attraction of a fixed proton some distance above it. How far above the dlql- e)fdfydv.eq1p:hk83fmvjb8m +33e 3 lelectron is the proton?

  Two 0.20-g metal spheres are hung from a common point d: 4ugrqk1.zp by nonconducting threads which are 30 cm long. Bothk 14z.u:rgp qd are given identical charges, and 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. What is the magnitude of the()arpw;u)n 4y/dw z pe electric field at a distance of 1.0 m from the4we rn) ;zu aywpd)(p/ nucleus?

  What are the magnitude and direction of the eleo:uxb5ln v):lctric field at a distance of 1.50 mv:u nl 5xo:lb) from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test cha*xkdf q4y l-0vrge. What is the magnitude of the electric field at theyl fd4k -xv0*q location of the test charge?

  A 5.0-C charge is 10 m from a small testewix,0 7u j-daeq*slq 28 mh-j charge. What is the direction of the electri,70d*jm8q-j esiehaq 2- xulw c field?

  A 5.0-C charge is 10 vb5xst- ujmr0 q1 z, wr:i//ybm from a small test charge. What is the magnitude of the force experienced by a 1.0 nC yszvm/tr:bw0/-jq,51x ub ir charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ow 2 hg ug.he-3 *sheod(iu3;lcf 4.0 m. What is thesghuu.ei 33-g; dwe hohl*(2c electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at thcfk+rwgq -r4;vd3j .q e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 c.jr+4q -kwr3 f;vqdgcm mark?

  A 5.0-mC charge is placed at the 0 c0c* 9)rtha hcam mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?th* craca09 )h

  Two point charges of +3.0 mC and -7.0 mC a;uydx,bfrw:+h 1rhc8cy -pk 7re placed at x = 0 and x = 0.20 m. What is the magnitude of the elect8f yd7r+rhbhk ;c:x -wu1py,cric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of 5a 04)slag ewmside 0.50 m. The last corner ise4am agl 05w)s occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whichny8g ifx:,1 i0mk t2ha is 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). What is the magnitutkg ma,1 inh8:0 fi2xyde of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when g.u;5 yc fy8t4zbd9 byit is placed in a uniform electric field. What is the magnitzc4 .gbyt f598;dyu byude of this electric field?

  A particle with a charge of 4.0 mC has a mass cdq4qe)a /fl2gko6kl t48la, 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 6koxm0 d6z r4k 9z.u2pl000 N/C pointing downward. What charge mu 4u lpmx029zkdz. o6rkst be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a c ei /io :e(i lk o6zi4pg4z+yszm,a4w3harge of -2.00 nC. The ball is placed inside a uni ie:izy4 o46 ,(wp3om/ik +glzsiza4eform electric 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 mC. What is the magnita fk +le9oezg6)zya/ 7ude of the electric field 5.0 cm from the sp/6y9f kze lo7) agaze+here's surface?

  A metal sphere of radius 2.0 cm carries a charl nr lhow :jf75e.2oyxhw fmsx;*31r(ge of 3.0 mC. What is the electric field 6.0 cm from the center of hms;fh5eo(lxr1xw2ly :*3w 7fjrn.othe sphere?