State the law of conservation of electric char;7zme zke:f(g h th.8ige.

  Is it possible for two negative charges to attr ,bs y-5 a;12fw8ol.oz- 8cq, xrpftsek1ljzc act each other?

  Is it possible for a positive and a negative charge twwinid3)y;w:7h: +ku* gg)aegx tpm2 o attract each other?

  A glass rod is rubbed with a piece of silk. e,: rs) sge,(3gy+)jsqcbxme During the process the glass rod acquires a positive charge and the sy3je:s egs )),qe,mcbg+ r(xsilk

  A proton carries a

  The model of the atom qdkiq 9 q1-cn 49zle1nshows a

  A neutral atom always hasn,:s)0kvhcs3iu l1:xxp7im v

  An atom has more electrons than protonsye z;7cs43khy. The atom is

  Materials in which the electrons are bound very tightly to t(iv 0e ;k0epk*hms ei-ib nz*.he nuclei are referred to ae*ni0;k*-kezivb mpe (ih.s 0 s

  Materials in which the electrons are 5xaflk2ja d3 0ctxi+*bound very loosely to the nuclei and can move about freely within the material are reffc+ d05 x2laa k3jxit*erred to as

  A negatively charged rod is brought near one end of4 ibff1d3 4ciz an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargc31if fbd4 zi4ed

  Sphere A carries a net positive charge, and sphere B is neutral.-7e sj3f-hyv l They are placed near each other on an insulate efhv-37s j-lyd table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively1c z e;eluc;x 3:5qygr charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched w8o-; ))xhyqhh qvyhn68py0ukith a positively charged glass ro8h-hoy; y p 0k)q6)xunyq8 vhhd. The electroscope

  An originally neutral electroscope is grounded briefly while a positively char gnar3qf5 (ay+ged glass rod is held near it. After the glass rod is removed, the elect 3na( rg+fy5qaroscope

  A positive object toucheg3q d-efy3uou5 w(zm8s a neutral electroscope, and the leaves separate. Then a negative object is boew5zmu g33-8yduq( f rought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutfkwgr+w 5xg ,8ral 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, strike +grw8,kgxf 5ws 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 Coulomb constant ,/,gv ru *wfv2x0o byldia*o*$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thehhn*i2k(gj;id* mk .i first charge is larger in magnitude than themi; nk ij2kg*h. (ihd* second charge.

  Sphere A carries a net charge and-)z82+1z+ybg*lz z)bmt*kn y swwprjc ,p ;go sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic +rlg po)pswy j,* *m kc1wt8z)g ;+bbz-z 2zynforce between them?

  Two charged objects attract each other with a ceyo0*j/qi g3a/;bdffn+e +y lirtain force. If the charges on both objects are doubled with nogao3enlf/q* jy y;/+i+ifd 0b change in separation, the force between them

  Two charges are separated by a,v bf1 0okgap+ 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 forcespao+ f0,kgbv1 ?

  Two charged objects attract each other with a force F. What happens tcd( x2f9rpy0,cd .bo. mzc*bko the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is ro*2cd.db cbxm9 kr.f z(,0p yceduced 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. xgwd,mdlg(g wx +;62rp*lwb2 What happens to the magnitude of the force on the proton if a second electro*w;b,dg( rx2wm +2 dl6 wlggpxn is placed next to the first electron?

  An electron and a proton are separated by*fe;p;e1*t*b qf at qr a distance of 1.0 m. What happens to the ma1 ;rt*e;qb q*ptefaf*gnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance o6mj3 fdp upv5*rl*n,h f 1.0 m. What happens to the size of the force on the proton inlh36p p vmuf,r d*j5*f the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cenyym:8;dtp9 .pvef1* mof44 + xdsvubwter 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 tyv.:d 4+bx8pf m;oyew9v f*dtm p4u 1she 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 w(/a.swsoi g9ubjls(, , + 8dwon;1 s3hesococentroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of1(sso3law/b +e us9hwod,wjo(nsc8 ,s;.i g o 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 veh ffbq1c osf:f9e29* ryh4vz 3ctor?

  At twice the distance from a point charge, the strength of the elec,baglniq 3- 7itric field

  Is it possible to have a zero electric xqmqthe/asun qk *3/f7c75 kj 7j9 fq;field value between a negative and positive charge alongs77f 75/jja qmf9qeh*kqcnkt3/;u xq the line joining the two charges?

  Is it possible to have a zero electric field value betwee-m +(vgkl) nsrjg6i e(n two positive charges along the line join n(g+l(kv eg6rs- )imjing the two charges?

  Electric field lines near psi.j r77c*y+r-qz mzevstive point charges

  The electric field shon3g60gon l8q+ epk7xhwn

  Can electric field lines intersect in frenxdolsu g,foy b+.)yn 3e231 7 .jqisqe space?

  A solid block of metal in electrostatic equilibrium is placed in a uniah * 4p1iq /9 mwtxt7h/d5rrvfform electric field. Give a stahxwd th9 //f*vi7mpa4 t5q1rr tement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters av: * lrags*z )8ny 8cblcab06gre each given the same charge, the electrilyz 8 rbngg6cc*:*80 bva)asl c field (E) midway between the center and the surface is

  A cubic block of aluminum reg 94u,v0d ryz dpwvl12sts on a wooden table in a region where a uniform electric field isvgrz 1wvdl4 u0, yp29d directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elef dil /0ycy/ckwf,, (pctrostatic equilibrium near an electric charge

  A positive point charge is enclosp: rxgqw* ab19ed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the a9prw1*gq:bx electric field at a point directly above the hollow sphere has

State three properties of conductors in s (zy uhaa-(ma0e6v.lqmi* .rstatic equilibrium.

State Gauss's law.

  The charge carried by one ele+n4uj - z.+gy -nxl9l2pgou loctron 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 +2.00ky.1;3ss 9zuwvj ei .u mC. How many more protons than electron 1yiu;ve w.uzkj .9ss3s does this piece of plastic have?

  What is the charge on 1 kg of prot/0 eucm 6s)kaeons?

  An atomic nucleus has a charge o)a os rk15ecs0f $+40e$. 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 aguc 7-twb wm;s dv8-b/x9zus6 nd -4.0 mC, respectively. What is the magnitude of the electric fb sd zg; wvxc7s t9uu8b/6--mworce between them?

  A 1.0-C charge is 15 m from a second chargo3lfvq+nh*:6o hjc .so egt; ;e, and the force between them is 1.0 N. What is the magnitude of the second ch*og3 6tfo. o;+ve; hqlnhj:csarge?

  Two 1.0-C charges have a force bet cyo-mir 49y0gz3 mu/nween them of 1.0 N. How far apart are they?

  The force between a i 1bi, ue basct.jd8tzyk;r -du*k)- ($30 \; mC$ 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 b;okgv5 w0y; lo94oez.0-N force. If they are moved to a new separation of 8.0 cm, what is the eleybo; kw9geozv0ol5 ;4ctric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chajlghox3fh., 2 rge is alf xh ,j.3g2oht 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 which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge ofo-z;wi vw-abbi +, .hi +2.0 mC is placed at the origin, -2.0 m C to the right-io ;i,vbzih.-a +bww 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 charge at the origin?

  Three point charges are /d /kpr;aq(;kknqy wh6i. i0zoqk :4olocated at 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 m. What is the magnitude of the force on the 3.;aq4q ko:d0kwhnz op k(6 .qikiry /;/00-mC charge?

  A point charge of +Q is placed at the center of a square, and mi,pdb,kb,2 y 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 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 cornermdk2,,byi, bp?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (dcm ov 00,3*d j9uqpye0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on theyuq9v0mo0dc ,e j3p* d 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 (orl) 7wi utkf/c.vq, nreqn:cl 0*d0m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What isrin0*07ktwrqc/l )qd , fn:ecuvo(l. the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilat.t+-9ad - chuix m5ab nx0y0vteral triangle which measures 30 cm on a side. What is the magnitude of the electrostaticad 0 b5x-nx9i.+ tyh- tuvc0am force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are p:aedt qf,3(fw: ebo0separated by 3.0 m. At what point, on a line between the two charges, would it be possible tbep,w fo3(:e:t fq 0ado 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 a +9.0-C charge is atl0 b mm28g-lfa x = 4.0 m. Where on the x-axis can a third charge be placed so the net mmf-8gl2ab0 lforce on it is zero?

  Charge +2q is placed at the kq1okh ,x56oqnn6un 0origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on o6 ,qn6x nu h0qkon1k5it is zero?

  A copper penny has a mass of 3.0cjnydpcn ,zl975 *tjch+ eay24g9il, 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 against the for 5ezj0fs uij1omu a3lz-5n2 o(ce of gravity by the attraction of a fixed proton so05jj3us zi nmu2f5(oazo -1leme distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads wy 4-butpze 2a*4qr.rfdqd. l(n 1ic nb2;tk4yhich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the1*l;2 2..e kqdtn tyqpfc4 dizrb4ua-(y4 r nb threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What ik;nt4r oho6fj6kf -.5z l 7d qyio94hos the magnitude of the electric field at a distance of 1.fn;toolqio974jkd h5r6 yzo4f h6 k-. 0 m from the nucleus?

  What are the magnitude and direction of the electric field.ptzf n:q svawkn z2e.zp n. 1x.*+eo. at a distance of 1.50 m from a 50.0-nC ch1:*.z+sk.ntnwp f zzq.aex2e pvn. o.arge?

  A 5.0-C charge is 10 m c4j( l6eng7q5w j q):i abb7edf gw8-ufrom a small test charge. What is the magnitude of the electric field at the location of the testjdbq e8qb -nwi4 g7 :)7c l5ej6f(uawg charge?

  A 5.0-C charge is 10 m fri nd.en1:. zxkom a small test charge. What is the direction of the electric f1nnidek. .z x:ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of-z bw( q/vax;6rxdq lq e;lte)p8 *o*s the force experienced by a 1.0 nC charge placed at the location of tw*le z/lx dqa-*pseq x8;q6ovbt();r he test charge?

  Two point charges each have a value of 3.0 C and are separated ny ar)*i nhy72by a distance of 4.iy72 *n)nry ha0 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 markt0 ez205dcf yw of a meter stick and a -4.0 mC charge is placed a5fzd0e 20tycw t the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mgxk-w, ud bx7t mt.25zeter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the ztt.7dkbm2 5w- gux,xtwo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at,feksi6 *i4bqs7z5 klwwzm r /yh 6v45 x = 0 and x = 0.20 m. What is the magnitude o6ik47yzzbfws ke, 54i5vmhq6/lsr *wf the electric field at the point midway between them?

  Three 3.0 mC charges are at the three co u:rl 7o;g++rwg+5y-ed ouuc,g (sirnrners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC:o5slc+ ,g+eu;r u( d yrgw- io+urn7g charge. Find the electric field at the center of the square.

  Consider a square which is 1z oi6 4ct45ro wt8*rppa98efl .0 m on a side. Charges are placed at the corners of the square as f4r6 a* poe8ril ot 895wpzfct4ollows: +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 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 czjkow 7jqzl177u4 ) jelectric field. What is the)7w7 u41jqcok7j j zzl magnitude of this electric field?

  A particle with a charge of 4.0 mC has3. php:yrxwq v* 1mkx4f 5smd6 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 ele2jb ja*ui4xu *ctric field of 6000 N/C pointing downward. *j2xu4 ia b*juWhat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0fvgbty3 wpy*e qb/(62.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction*fgpe( ywv y3 qt26b/b of the electric field?

  A metal sphere of radius 10 cm carries44egv u8g cg7b a charge of +2.0 mC. What is the magnitude of the electric 8gvuc gb7ge 44field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha4/3m,bb1pk x ve tzx(sp55uffrge of 3.0 mC. What is the electric field 6.0 cm from the 3upmpe5b54 szf(/ x,bxk vtf1center of the sphere?