State the law of conservatiav((x 3vrxl d.on of electric charge.

  Is it possible for two negative charges to attra-qqdrbqz,i s/d(83 sqs -k6qtg o+s, yct each other?

  Is it possible for a positive and a ney yt9fz0ks p/3gative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the bevuda r k(r, byl8e fk/)91(sprocess the glass rod acquire1 evy9,u8lb bkr/k(r (d aef)ss a positive charge and the silk

  A proton carries a

  The model of the atom shows x2mc1cl h31o qox4b 2ua

  A neutral atom always:r l ki-+hhz3o has

  An atom has more electrons than protons. ganir f;0ob(j ef1/d7 The atom is

  Materials in which the electrons are bounxco-l)l h+eyd c/b8(5 eqb* fsd very tightly to the nuclei are referred tocbebf)q ol*-(lcsd8ehxy /5+ as

  Materials in which t8ewn 8 ljnq +c3xo:l0che electrons are bound very loosely to the nuclei and can move about freely within the material are r 8lc+8 j0c:o nwnxle3qeferred to as

  A negatively charged rod is brought near one end of an uncharged mets79x t,ajca -ial bar. The end of the metal bar farthest from the charged rod will bet,i97c- jsa xa charged

  Sphere A carries a net positive charge, and oagt e hrl2 suk+l.st2)ux,)0ey*9wc8 -rwyl sphere B is neutral. They are placed near eacwx gc2 *easy. w+o))ukre -rhl9sluy,t 82lt0h other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivedj ds 1,ry3p:oly?

  An originally neutral electroscope is brieflyj wv* ix(* a5vn)iyd: vgob2,p touched with a positively charged glass ro wjvia5i,v( :2vnodpxgb*)* yd. The electroscope

  An originally neutral electrosm)m( hitncq 19cope is grounded briefly while a positively charged)mtm1qichn 9( glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, a ozz xvenz b0:):(ndr.nd the leaves separate. Then a negative object is brought near the electroscope, but does not touch rb): v zn0 nzo:(x.dezit. What happens to the leaves?

  A large negatively charged objectc j83r wlwf)v5k,9 slf is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral me3lr wl5 ) c9fw8ksf,jvtallic 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 each ball?

  Charge is

  What are the units of the Coulommp(v /tob ym ulgql2 t8z5w l,bz97i9,b constant $k$, which appears in Coulomb's law?

  Two charged objects ar1/w8bvqvt.x ke separated by a distance d. The first charge is larger in magnitude than the secoq k.btw vx81v/nd charge.

  Sphere A carries a net cha6rdztgif24m :j w-n/v* swn 2irge and sphere B is neutral. They are placed near each wd 4: nm*fnjr2 6g2-wiv/sizt other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wil lz7 w ;9wgnm0eej.+fth a certain force. If the charges on both objects are doubled with no change 9+gj.e nwew7 0z;m fllin separation, the force between them

  Two charges are separated by a distance d5;fcdpoum5 , g and exert mutual attractive forces of F on each other. If the chargepmu5d 5;cgfo, s are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happenw.dftj4qag8ug3d6 r0 q drh;yes+;v9 s to the force between 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 vda qru9y8wt 6;fvjrs0g+h;.dg4 3 dq ealue? The force is now equal to

  An electron and a proton are si9jj y/suwb48e3 sj1 separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secoi3j j14es wu9sb8jys/ nd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happensxq(kyd ;b w4po6 l:cz+ to the magnitude of the force on the ocxw6k yd(z :pbql;4+first electron if a second electron is placed next to the proton?

  An electron and a proton aoyp o8xq4:sqpcw-22l+hexs- re separated by a distance of 1.0 m. What happens to the size of the force on the proton if the elecq2:p8sl-syc-w4oqx+ x2peho tron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the vw*po/ .)h ynrh,a.p vcenter 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 the magnitude of the net electrostatic force acting oh. /p,v.) rvaohn* ywpn the positive charge at the center of the square?

  A point charge of +Q is pla8bko w2w1,ww mced at the centroid of an equilateral triangle. When a second chabo8w2w w1wm,k rge 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 other vertices?

  Which of the following is not a vector?fu kg n+p g,5q5i*9 eipmt2hn6

  At twice the distance from a point charge, the(uu , bx( um9kytba ;cs4d)hc: strength of the electric field

  Is it possible to have a zero electric field value betp10 ejjddzs3/ b3x2pyween a negative and positive charge along the line joinin e1 jb/p0xddys323 pzjg the two charges?

  Is it possible to have a zer*b l((qqm g4i:naos*i o electric field value between two positive charges along the line joi* l qqm(*goi:s4ba(nining the two charges?

  Electric field lines near p-y 2h;bq nt 6ku9t-o( d(e /arhw0tbcksitive point charges

  The electric field showo z :-u7k7knq*mpe*7 7v 7-hi yj*l7kvxgtsmwn

  Can electric field lines inte*k zyk .tyvr9fp:er; eisi47 2rsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unv(b 2r3 ugb c*vh;s0 /cto-hg*p es4pgiform electric field. Give a statement concerning the el** go/v(b2- 0g gr3ps; cbepsthu4hvcectric field in the block's interior.

  If a solid metal sphere and a hollow metay br *243lgjxe+aedk (p,:oo8vl:y byl sphere of equal diameters are each given the same charge, the electric field (E) midway between the cen lep l4od2bjra*(3, ye+x:v:byok g8 yter and the surface is

  A cubic block of aluminum rests on a wooden table in a region wherev, sg-o8wrsn-vy7: el a uniform electric field is directed straight upn8ws-el7 ,ysvro :g-vward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecl7/pt lnbwv7 uxw )5/ttric charge

  A positive point charge is enclosed in a hollow met-g yh5l5 eveatku-t,h /0,vkyallic sphere that is grounded. As compared to the cas v5/-ykty khg-50velheu,,a te without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors r2y*cc q0by o h;(iy,e7ji7xzin static equilibrium.

State Gauss's law.

  The charge carried by one e rih*:1wri:tylectron 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 +2.00 mC. How many more proton 0xf.2 :ieorxns than electr0 .i2o:xf xenrons does this piece of plastic have?

  What is the charge on 1a*v; f35 avdxd kg of protons?

  An atomic nucleus has a charge of d g gz u:cuj*w9hy7/4z$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepax 9xbegr r9,4drated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between thrbxg4r,9ex 9dem?

  A 1.0-C charge is 15 m from a second charge, and the force betweeqx+6zdrz3)rg+ g4x k xn them is 1.0 N. What is the magnitudz+6r xgdkr 3q)xg+ 4zxe of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.ktc;41pag rl 0 How far apart are they?

  The force between a k6:bh z,/zsx k$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, in:prdw00)zm25 n gjb0abhi cd3itially 2.0 cm apart, experience a 1.0-N force. If they are mo:0cjr id n3h50zdp 2w m0ga)bbved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 9ocv wflct z+,sj;9a02.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the thir0,wtaj 99f+ oz; clsvcd 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 mC is placed at fcc k73m,lmm+ 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 which acts on the charge at th ,cl3fm+mc7k me origin?

  Three point charges are located at the followi .czck)-nimkjiu5 p4 h-0f3rpng positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -f0pk cpz-icn) 4i hk-35rj mu.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, tiq u ;h4h.j4kand a second point charge of -Q is placed at the upper-left 4qki4u. hh;jtcorner. 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 10nv u( 04mcr w )z4ueaskqb9aat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of tmau0qk0vw(1z a c9n4e4 us)rbhe net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =7k cc1c+2xb1y/ 3wsuipmt4 cc -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 u/+ptixcc71 c3wy2 k1 4 cmscbnC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilate/lsf822dod; q/dr5k +m jk;pf,mqnnx ral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the l+nf2 rosn/ ;,2k p 5jkxqm/fdq8dm;dcharges?

  Consider point charges of +Q and +4Q, which are jwffy .7+pf )gseparated by 3.0 m. At what point, on a line b+fj p) w.7fyfgetween 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-.gc6g-,2btuu-as0*x9nxfvjt h; hyp)mxyg a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the yp -ttm ,sh0ax.); * xuy c g-9gnfugbh-j6xv2net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plac vb71vrhtz.f7csev 1 .ed at x = 2a. Where can a third positive charge ..bevcs h1vt1vf77 zr +q be placed so that the force on it is zero?

  A copper penny has a mass)u t/t( w/tirl of 3.0 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 force of gravity by :xqe7u; ci6c4;e-t cogl x6 mpthe attraction of a fixed proton some distance above it. How far ab;cc-;o6imgxl6upe qc 47:t xe ove the electron is the proton?

  Two 0.20-g metal spheres are hung)wnfzm uk)/ ,:cjp2-:x*z kkv k9bjlr from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads rkc)v*zp ::w9 mf/j zk-,kulj2kbn) xis $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electric2m)h phihaes*. xjt*/ field at a distance of 1.0 mpj*a)i/thh . esmhx*2 from the nucleus?

  What are the magnitude and direction of t wx, *yjyy5un:he electric field at a distance of 1.50,nyyjwu*5 : xy m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of fefppsdwpc+f+sg/4l. -l29 n the electric field at the location ol -endc / 4ws+f+.pfsgf2 lp9pf the test charge?

  A 5.0-C charge is 10 m from dtxg j6k*,r.6gxvy,:mupz,c k.etlo :arx- .a small test charge. What is the direction of the electrogyr.kt xz. .-6:kavx t 6,gl xu:djp,r *,cmeic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magc eyld4)1nw 4mnitude of the force experienced by a 1.0 nC charge w4y)em1l cdn 4placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and ak ,x97gz)y:nep7ikmp ta +r;e re separated by a distance of 4.0 m. What is the electric field at a poit;k)e:ake pnm9+p i,z77yx rgnt midway between the two charges?

  A 5.0-mC charge is p.2q xt(v lg3fylaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is th .3gq(x2vl tfye electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick xigz, q xxme; 8 b6mbubf, f+8+jpmo/.and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joinmb,zm fgoxu8. pf+ +8xji6ebmq x;b,/ing the two charges is the electric field zero?

  Two point charges of +3.0 mC and:b5/gq ht m9jo -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between t9jqb5g th m/:ohem?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thdqz l8a+x,73lg qls v,e last corner is occupied blv+3ls87, l,q dxaz gqy 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 are p. / uan(gb:syagq6r3 ilaced at the corners of the square as follows: +sg(nga6./iar 3b: qyu4.0 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 actse/cv ,li :ir7x on a charge of 5.0 mC when it is placed in a uniform electric field. What is the ma:,cie7/iv rlx gnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of oa dsz gkwi5k k/g7s*/02et;p $5.0 \times 10^{-3} \; kg$. 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/C poiyw+m 3u33sz065czlvgrjlkg9 m n 4 vm-nting downward. What charge must be placed on the ball for it to be suspec lv 3u0 my3v6wz rng-mz459m3gjk+lsnded?

  A foam ball of mass 0.150a6mvdg- --f mj 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.6jamg-d v- mf- What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrmmf oh 1jwz)9;ies a charge of +2.0 mC. What is the magnitude of the elew1;jfzm)9 ohm ctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whatn i nw8bzofxx6nf+/ o3g4cv(; is the electric field 6.0 cm from the center of thebz;g (+onin f4w6x3n/voc8 fx sphere?