State the law of conserg(i hp(kgoijk kg.n2 8:ai18z vation of electric charge.

  Is it possible for two negative charges to attract each othhs io x-tt+bs6r:2cyd68 j,0d jo6g+ m5kb hemer?

  Is it possible for a uzxo6 e783a*n;lgjpos *x+7o jktqz4 positive and a negative charge to attract each other?

  A glass rod is rubbed with a pie l0yz0)/eje/a)9 ctxcp 8efy ace of silk. During the process the glass rod acquires a positive char e0a/ czp)f9e j )y0tl/exay8cge and the silk

  A proton carries a

  The model of the atom shows a(j h5 qg5 wdf,h wy9jh3khl1-a

  A neutral atom always3+56 tbt4i t8 tq2jj zw go7krezg/hb6 has

  An atom has more electrons than protons. Theh/ ,u2 xj;htr u0zvt/w atom is

  Materials in which the electrons are bound very tightly to the nucleizwf (kulfk) -11wmco5 (/kem u are referr ul kmfk1)w1wmu(z(/koef5- ced to as

  Materials in which the electrons are bound very loosely to the nucl6p+*3 rcbn/ivgrr/n f4guc :yei and can move about freely within the material are referf* 6nug:c4/rb r v+/ypingr 3cred to as

  A negatively charged rod is brought near one end of an unc fru7c(9ue-vd oqc7* aharged metal bar. The end of the metal bar fartvc(o 7 aduer*7 f-9quchest from the charged rod will be charged

  Sphere A carries a net positive charge, and 48n 2-oiqxefcsphere B is neutral. They are placed near eax f2 -i8c4qnoech other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cg9)d rcmmvt )*mmr*)yt dok32harged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a 6 s5(pfhl wj ji/ug(x113sryzpositively charged glasjwyu5gj3 rfpx/ls61( i(1szhs rod. The electroscope

  An originally neutral electroscope is grounded briefly q8bbi.m u;h 2 5vdr;ncq4f)vj while a positively charged glass rod is hel.j f)2nqcbm85qdrv; i;vhb 4ud near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral ebv(jl-ew zs nbg146 /zlectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but do1s/lv(g 4jenz6 -b wzbes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutr8cw 0 5pttk)byn.l n1ax0trb7 al 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 thebt 5tkb.xwrpn71l 0ay0n)ct 8 final charge on each ball?

  Charge is

  What are the units of the Coulomb cons2orh9m2 1h82y cseulutant $k$, which appears in Coulomb's law?

  Two charged objects are separated by /tn))xz fk :mj7q:+fft tv.mua distance d. The first charge is larger in magnitude t:7ztn.+ v) q: u fxjmt/mftk)fhan the second charge.

  Sphere A carries a net charge and sphere B is bq.xv c+ 6hhdz7,q( pjneutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them +pdzq( 6,vbhx.7cjhq ?

  Two charged objects aja;-r cv f0fj hh0h.3zttract each other with a certain force. If the charges on both objects;3h-v0 jjha0fczf hr . are doubled with no change in separation, the force between them

  Two charges are separaten.kxav l;b15l d 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 fx5lbn1. v kla;orces?

  Two charged objects attract each other with a force Fi;syl5 qt7p)jjz dr yjm5+-z*. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centqz*y - +j5l7i5;s m tdypzjj)rers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distancv.dyzvx blu14h1 / qw2e of 1.0 m. What happens to the magnitude of the force on the proton if a second electronyvwd4.xbh1v ql /12u z is placed next to the first electron?

  An electron and a proton are separaj7139-axhlv v ed*t(m dp+go 33llvgated by a distance of 1.0 m. What happens to theat1*-al (lmgh3p+3 vedl j v79ogx v3d magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a pr5z6 -w6agy 8hb:j3pe8l umlj doton are separated by a distance of 1.0 m. What happens to the sizy:3pl5j8gz 86ej -m d6ubahwle of the force 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 sqegmfl xqh o( +m t.csh7q402-ouare. When a second point charge of -Q is placed at one of the square's corno4og20-7h hq+(mmctsq x fl.eers, 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 center of the square?

  A point charge of +Q is placed at the cen;igfj+6g w4;ik hw:ai troid 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 center charge due to a third charge of +Q placed at one of the ot; :aig6;fi ijwghwk+4her vertices?

  Which of the following is not a *jh9ri9 2+bo- ktzt(lf+/tyj wse)d pvector?

  At twice the distance from a point charge, the strength of the .jciobsk zt,4v70he- electric field

  Is it possible to have2 u l;zbc:osq)v, uw5,nu )fas a zero electric field value between a negative and positive charge along the line joining the two us ,bl5 ocv,u;)s) qufwz:n2acharges?

  Is it possible to have a zero electric field value betbz m hxu+,csoo7 rj4+(ween two positive charges along u+ c+h4zsx7 ,r(omobjthe line joining the two charges?

  Electric field lines near psitive pp60rki c.0yv point charges

  The electric field sho; g re/3l,b;f hq:ezfjwn

  Can electric field lines intersect in free sp z(-zj6 ip,y) wwk8firace?

  A solid block of metal+95shg/c*u1bmmsze t in electrostatic equilibrium is placed in a uniform electric field. Give a statement co m 9m*5bt1uzsh +gcse/ncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of188mexlkb m:3jfuw g2vdo; xvvha(8 8 equal diameters are each given the same charge, the ebwvov88:xaxm2 kf ;h g(d1v8 mjue3l8 lectric field (E) midway between the center and the surface is

  A cubic block of aluminumpf:rp: vxxl/w34qd 1 f rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charg4v/p::qrd1 f pwlx3 xfe on the block's top surface?

  If a conductor is in electrostatic equilibrib mo 8v;6:hko iu7gz)o90jykj69jqjpk y d5w:um near an electric charge

  A positive point charge is enclosed i7n ef il/fe7/p(c2ydjn a hollow metallic sphere that is grounded. As compared to the case with77e d2(ei yp ljffn//cout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilif50dk)ih ogyg0jvfigv ,0 q ,:brium.

State Gauss's law.

  The charge carried by one electen;v/ oobcxq;3 l)t y(ron 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 charo/h +pt2ksre k7hya bw-x+9:hge of +2.00 mC. How many more protons than electrons does this pi hh7ha t/ob+yprx9k-2+ wk:esece of plastic have?

  What is the charge on 1 k fh-8hejbsr:plf q)-/nk2 9g kg of protons?

  An atomic nucleus has a charge of nuzzh0 e g1q*j5mt*prr8lg 28z7 h(fr$+40e$. 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 anzgl1 l( s.h4xxd -4.0 mC, respectively. What is the magnil(xs1zgl4 hx .tude of the electric force between them?

  A 1.0-C charge is 15 m from a secetqz w5;9tgxv z5k;d 6ond charge, and the force between them is 1.0 N. What is the magzdtv;5x9ge kz; wtq 56nitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart a .g5j3ky py8wdiy 09ffre they?

  The force between a 2jj5uxe /sm8 se4sx4t$30 \; mC$ 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 1.0-N force. If they 9 apqk3)7opp,z 0yhy ;cj;+vc qrvod/are ,cd)vj /p 973qq;k0rypvpyao+hozc; moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charge; xc m2;m;a01f j);ylvx qidwqs of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the rif2y1;;)lm wj0 m;idqx a;xvc qght 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 of +2.0 mx*uxk 62hfvmnxj,m8(C is placed at the origin, -2.0 m C to the right at x = 50 cm,h*vnx8m 6 2(xkjuf x,m 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 following positions: Q1 = 2.00 mC ats*1 r4dnzcwd6 x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnit 6wd4 dszc*1nrude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square1 hx.w z3ufr4(sc(yce, and 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 wzyc.f(3 r(x4uc1she lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.1zmxqa8u(l 2rib9y ng 4vc/n6 0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wru46(ml cbq2/x i8n1zg y9avnhat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.e1:jvp61mugi 6 bd*m2y(vo ij 30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direoim(b dm*2jiuv jy1g:661 p vection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilat8w1rs9 nh ;p7uqf5ldueral triangle which measures 30 n7q9l8up u ;1sdfrhw5 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 segs9k4cnnv ./;w li y/uparated 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 force acting on wc9unl/ 4 .kn;/gysiv it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x uxc3nr k)yfs 9o0tp/9= 4.0 m. Where on the x-axin0ryu /tf99ks3p ) xocs can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and char/hajh g42zzy5 h8h6 wxge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the h 64 8whhj/2zyz5hgxaforce on it is zero?

  A copper penny has a mass of 3.0 g. An 9xbv5r74axnvzb; 0x 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 grav *rxo4fomkr+ 1m- w+rvity by the attraction of a fixed proton some distance above it. How far above the electron is the protow+4 fm- rk*omv +rx1orn?

  Two 0.20-g metal spheres are hung fromc0v6egm ahd4 4eu7,o n a common point by nonconducting threads which are 30 cm long. Both are given idev6 ueo c4g04nedh,7m antical 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.cpq 6ymhg p7zu l7e++6 What is the magnitude of the electric field at a distance of 1.0 m from the nucm + p+66u7h ze7ypclqgleus?

  What are the magnitude and direcvi 4 vdn2.x7eo w: xlmky3pi011fvgj*tion of the electric field at a distance of 1.50 m from a 50.0-nC chnlm v:wvp2.je7x ixgy14ok i31vf*0darge?

  A 5.0-C charge is 10 m /fupqrp,swum(,2w b;qii7 l* from a small test charge. What is the magnitude of the electric field at the location of the tes/mlsfi pp,,(27qu buw;wqir* t charge?

  A 5.0-C charge is 10 m from a smalle alkqhg.uu f+;nls5,:ml zm()*fm* l test charge. What is the direction of the electr*5 gulesuahmkf mm*fl:+. ) l(;l qn,zic field?

  A 5.0-C charge is 10 m from a tev s9:8+-ei mg8 qtczsmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test :emez9 g 8-+isctvtq8charge?

  Two point charges each havomxv5 g m+fvti myw6v(b.-:sd 58iml :e a value of 3.0 C and are separated by a distance of 4.0 m. What:y6tl5-ovi v+:s8fmw(b.dmv 5xi mmg is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a 5;k6 ztj ;zcun5ds:zw-4.0 mC charge is placed at the 50 cm mark. 6;juz:zt 5zc5w;k nsd What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 4r:+gne99* bxc)ff k bm fxi7acm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At w k*rnxb4f)c79+ifabx m efg9:hat 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 x = 0 and x = a c m(m1b.7er -q0lljw0.20 m. What is the magnitude of the electric field at the point a7mb ( lecwrql10.j-mmidway between them?

  Three 3.0 mC chargesa -gb gljf9(kds75 nr z8.xuy, are at the three corners of a square of side 0.50 m. The last corner is ygk7 n(agj,zs9-ufl 8bdxr. 5occupied 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. Cha fvy:5w aq(8;*)gest rofftu -rges are placed at the corners of the square as follows: +4.0 mC at (0,( : atwvuef-f 5g8s*orq);y tf 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 elecl8(0ea w7 f6btul 3lsgtric field. What t8( 0l7ls6bae gfu3lw is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a 6 uu,90 trkqi8hv(d(6mzjaie8 hj 8iymass 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 plac 11v lgkco9.52ivc v9 ,,hqsuyeou .hted in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to blsh vhqv v1you9kic9,c.,uog51. 2te e suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plac72fqcan y *ve1ed inside a uniform electric fi2n1 *ev7yc fqaeld, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radihl;5m cyd/ 0j56jrcpq n 41tqous 10 cm carries a charge of +2.0 mC. What is the magnitude of the eldn pt0 rm6hjcqo 5;lcy45 /q1jectric field 5.0 cm from the sphere's surface?

  A metal sphere of rabx(1bsdp )5b mdius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of thebbsxm)( 5b1dp sphere?