State the law of conservation of electrxht 8lwpe. lpd zr0h5d** r8m9ic charge.

  Is it possible for two negative cha(zu(2ylm:a)h3ebkm q qq 62ufrges to attract each other?

  Is it possible for a26 7k2 qhasgsr0g,xwk positive and a negative charge to attract each other?

  A glass rod is rubbed wixlff x6w-44ibv+ dh1u.v; xi nth a piece of silk. During the process the glass rod acqbxnu wih.;1d 6 -lv4+x4xvffi uires a positive charge and the silk

  A proton carries a

  The model of the atom shows mz)rv.p/5o*vt2r ba n a

  A neutral atom always ha;wnmff /ptt s)8:no4 ms

  An atom has more electrons thh +au79v dhko tx4)e )(t8enaaan protons. The atom is

  Materials in which the electrons are kb0)(oa5y4wrc puz/o cd a2 f7bound very tightly to the nuclei are referred to aayko/o5pd) u4 (a zcc02w7rbfs

  Materials in which the electrons are bound very loosel nc*,b2qm v-wz 0w1cufy to the nuclei and can move about freely within the material arenc u*mw cq1fbw0,2vz - referred to as

  A negatively charged rod is brought near one end of an uncharged metal batd bwn75yo e2dx-.d .xr. The end of the metal bar farthest from the charged rod will be cht.x5. o- dndye 7wd2xbarged

  Sphere A carries a net positive charge, and sphere B is neutam* 4yw + e*h1i3w nlsos,ydb0ral. They are placed near each other on an insulated table. Sphere B is b+y o0,a*nywlw s sh4e*ibm1d 3riefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rv* xxn o-lf py+0p ms,sh3+vw(od charge an electroscope positively?

  An originally neutral electroscope is briefly touc+rdi*jd+ a a+ wmfh,*.tmx 4fched with a positively charged glamwafi+f,a4+c. +* mddrhtxj *ss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively char *j ;tjzo*mn:vged glass rod is held near it. After the glass rod is removed,jzto*;m v: jn* the electroscope

  A positive object touches a i1y:m fu4 py g9fsd9g2neutral electroscope, and the leaves separate. Then a negative object is brou9 :2up9igfmdyy1 4fgsght near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an in;u7,*ot ljxjlsulated 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 nej*7,l;u xloj tgative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomi*ff1y:2hoyr m0 f yi6b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. c w:8-ntwo k7rr76rp j The first charge is larger in magnitude than the second char:c7t orkj7p8 rwn6w -rge.

  Sphere A carries a net charge and sphere B is neut .3s+3 hs+t/qwecrg dax ,*wfrral. They are placed near each other on an inwrf*r+e d ag.+ /xhs, 3wtcs3qsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If c9dsysmb 1d:3(i s m2.g5qp5r;( syhky se, hlthe charges on both objects are doubled with no change in separation, the force between thempy (hrscemhsy:3 12 ds(qsk ,li5;9sbdgy m5.

  Two charges are separatedcw*m7 +-fkk1svohkzte*m xv 69h2+gc by 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 are the new mutual f7mchsetfvg mkkk 6 h*++ozx-1 w9vc2*orces?

  Two charged objects attract each3wk *c)*nlocxyl qc(, other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between the,*(x o cqnw3y *)cllkcir 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./ps) *ht d+j+0 vctgrp0 m. What happens to the magnitude of the force on the proton if a second electron is placed next *r0dj/)phstg+ vt+ pcto the first electron?

  An electron and a proton are separauxupiky,2*m v 6mj9s5ted by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is vpj 5k ym6ux*su,i2m9placed next to the proton?

  An electron and a proton are separated by a distance 8+j0 ot2gjq btof 1.0 m. What happens to the size of the forcej2qg jt0b8+ot on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. g-/ r6rypv(r3+vkbfk 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 electrostatic force acting on the positive charge at the bf+p6k -v / k(gryvr3rcenter of the square?

  A point charge of +Q is placed at the centroid of an equ x/k yuylv12( xllel38ilateral 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 centey2/vx 8l ky3eu(x1lll r charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector?dycd/7/h q(luuht k37 (l6d ua

  At twice the distance from a point -hr3mwn01 cx4ua8 okwcharge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and xb880;r 1b q uanejh-qie *fv1positive charge along the line joining the two charges?8 1;q-08iae ebubq 1fv hrj*nx

  Is it possible to havet sutoh6:1p-kt 7ig/ o a zero electric field value between two positive charges along the line joining thesg it/oh61ot7:-p ut k two charges?

  Electric field lines ne u1c4a2b*u jypkf,sx .ar psitive point charges

  The electric field sho+c rd4tak-)s0ldld1c wn

  Can electric field lines intersect in free spacuai6ykx5 q.0m rigc70e?

  A solid block of metal in electrostatic equilibpbat d4w y8n oa2+q71urium is placed in a uniform electric field. Give a statement concerning the electric field ia8u w nq1ta7+pob4 2dyn the block's interior.

  If a solid metal sphere and a hollow metalnf (m: k/pvs3t sphere of equal diameters are each given the same charge, the elec3m( /v tspfkn:tric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden t.(y0c-+g;- ydcli fjfq u iq2iable in a region where a uniform electric field is direct 0iiy (fcdfyc2 +ig u;jl.q-q-ed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrosta y6rczi m;n.o0tic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that)z5y+pq k .vddi e-rl/8h f9uo is grounded. As compared to/5q +do-hi)zvlu9dk 8e.r yfp the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducl:8dm+(ues l(b0kswpszxx 87im 0dh3tors in static equilibrium.

State Gauss's law.

  The charge carried by one elect xyrqc0x,biku)f*7*2 t jep0jron 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 ne2 )tk u6fjqlr t37ryg.t charge of +2.00 mC. How many more protons than ele r6qyrk3ju2tf)g .7 ltctrons does this piece of plastic have?

  What is the charge on 1 kg of protonsfy g qtl2x 5yev8g164i?

  An atomic nucleus has a chargeyqr: 21 cz)zz tf+mvl0 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, hame 5luxh+,h :iyv)iu* ve charge values of 2.0 and -4.0 mC, respectively. What is the magnitu5mueu:i ih)v,x h*l+y de of the electric force between them?

  A 1.0-C charge is 15 m tb1zl +p2; cr 74 afmwje0ud8ofrom a second charge, and the force between them is 1.0 N. What is the magnitude of the second c7el +rcob0ptd maz 1;8u4fwj2 harge?

  Two 1.0-C charges have a force between them of 1.0 N. How fa :-otl6clepazpfv5fh.j; n02r apart are they?

  The force between a /m8m mad/w3 cr*;fuuq$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initi30s1 wvuqi od;ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whatv1wqos i;3ud0 is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. 2n+a*ybbp)qt4 3 pcea The first charge is at the origin, the second to the r) +4pbacbe*qytn3a 2pight 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-a(g g.rsbvo51wxis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 5 (gv.brs 1ogw50 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 origin?

  Three point charges are located at the follo.l2bvc/e ka r5ii j,i)wing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.0iiijb2e v.a/l,c k)5 r0 mC at x = 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 38srhvl;t v 83v;ywlf.,.3jmwsn qcisecond 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 positive charge at the center. What is the magnitude of the force that acts on the center 3;vw,ncwvyi vl;.htqr sj8 s. 3ml38fcharge 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, 0.10 m); Q3 = 5.0 nC is atht p u(eu(-weyf;(ch . 3syzo/ (0, 0). What is the magnitude of the net forcy(wc (e.he-uhtf(o uzy s p;/3e on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at f s ad36kgbn 8hwo:po5e,m3 q7(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whanwhao37d qps,k b:m8egf3 5 6ot is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3my:( pn5,uc ou.0 mC are placed at the vertices of an equilateral triangle which measure ,yo(pnum:5cu s 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 by 3.0 m. At what m,mg** s+ g9f hwnid)epoint, on a line between the two charges, would it be possible to place a charge of -Q gm * , n9*idhg)f+smwesuch 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 chc(+fncs ;.x = 4.0 m. Where on the x-axis can a third charge be placed so theh (;.fccc xn+s net force on it is zero?

  Charge +2q is placed at thb. 1y*6 oj0hw0mcpchqe origin and charge -q is placed at x = 2a. Where can a *06q1bwjo my pch.0chthird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota o3kga8lqk5-z l 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 attract -x 9v qbftb23 hw6i1h9sn ayq;0ijt9rion of a fixed proton some distance above it. How far above the elect6b0n92tsi hq; 9th- i1vfjwqr93 yxabron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads il2 ;5 iqxp5q1 kc.)mce;eg nxwhich are 30 cm long. Both are givenni; m)lce21k;p cgx i5xq q5.e 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 +4w6/h h-q zrj1vqhy r8 u8+1ydm0e. What is the magnitude of the electric field at a distance ofrz-+8h ud /1vw8mhyj q6r qhy1 1.0 m from the nucleus?

  What are the magnitude and direction of the e)uzjerh;urqj)8 w,xs 6jd8ve0k7 ;u j lectric field at a distance of 1.50 m from a 50.0-nC char r8ee ;,wqxjsk6 7jjruzu;hjuv8)0 ) dge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of x9prn +lwj6yp1t 0.vathe electric field at the location of the test chargew n x16tarlj90.y+ppv?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of5 lp/mqgd5-xaf uy3 n4 the ex/dul 3fnaq-4y5m5 gplectric field?

  A 5.0-C charge is 10 m from a small test charge. What is thesyu 3f,nywezq99, (*+da ohrw magnitude of the force exp3s o,ynr(hfe99azd+qy w *wu, erienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a valu0dwlqeg*qd r : )) 6czcs,ll1c(lbz4me of 3.0 C and are separated by a distance of 4.0 m. What is cc)b10rz6():gdl*e, 4qsdcwmlql z l the electric field at a point midway between the two charges?

  A 5.0-mC charge is place9q6/ar4mu.e qh5 bwxh d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electriq.rbmh9hw e/x4 u a5q6c field 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 4ej9i9 sko3x qmC charge is placed at the 50 cm mark. At what point on a line joini9x3 koe4q9sij ng 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 = 0.20m;cohg )71inif-1 ndqxa q iz/0:v9ez m. What is the magnitude of the elec0 zeqd:c1 aiin7g)n f-o;/h1 9zxi vqmtric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 mfmn;q6z (q-wbne 8g (l. The last corner is(l ;(-nf 6mwq8b nzegq occupied 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 areygrr.5()v 6pm6udrzn 2 *wpeq 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 mr 2e5.uq6 rgv*p y nr(zpdw)6at (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 1suo0u+ 6 8hxdkfs8,2rpirjnwhen it is placed in a uniform electric fdfoh8su 1k+j,rsn0 xp26r8u iield. What is the magnitude of this electric field?

  A particle with a charge ng,3 1s.w4 4)s mnct-polozumof 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 mass 0.120 g is placed in an elec.y5iav8f 8t +uprro*ztric field of 6000 N/C pointing downward. What charge must be placed on th 5o+y8f.rurpaivzt*8 e ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of rebl,;.mv(0n;z l 16ycjsxa j -2.00 nC. The ball is placed inside lav ms,6;l jnezyb0; (1jcr.x a uniform 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. Whaaw7 ;-sk,((tye6wc v hziz m4ot is the magnitude of the electric field 5.0 cm from the sphere's surf 4s,cy(- oizt 7vam(6zhk;ewwace?

  A metal sphere of radius 2.0 cm carries a chargeg9q sel t)7v- wgi9or1 of 3.0 mC. What is the electric field 6.0 cm from the center s7gv9qr9we1-olgi t) of the sphere?