State the law of conservation of electric .(, sa3mqag5pp7hgbu+puzk6 :czw 4 zcharge.

  Is it possible for two negative charges to attract2 ubokn:2zfl9c2 e qf8 each other?

  Is it possible for a po7o5 kp7 8dgcbwb.7pgb sitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dushy/wr0f3+k u97yv uuring the process the glass rod acqu +vs0uu9f yrw3u/y7 khires a positive charge and the silk

  A proton carries a

  The model of the atom shoeyp 6je9p6l j22)y -y lk+ljfiws a

  A neutral atom always haseo s: ,(o:kzbq

  An atom has more electrons than protons. The atomb2u1e v26mhn5po5az:a* v g ej is

  Materials in which the electrons are bound very tigj cpj8 zd1*t1shtly to the nuclei are referred toc*8stpj d 1z1j as

  Materials in which the electrons are bound very loosely to the nuclei *(lisd*w2ydqand can move about freely within the(*ysd2il wq*d material are referred to as

  A negatively charged rod is brought neau ix+::o i09)ivyl,ol jtns +jw xq60nr one end of an uncharged metal bar. The end of the meta:o lx0: l,i)jsiw+0n9toqxn6i yuj v+l bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sp qsix+8(r :xcbmt(k d 2bl8fl1here B is neutral. They are placed near each other on a i( cdxqfkl+:28r8tb 1lsx mb(n insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cuf(aymec+60charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivenh9lvtw(yxf34+ do53i(m h xs ly charged glass rod. The (ds3y h3n(mxhfto4v9lwi+ 5xelectroscope

  An originally neutral electroscope is grounded briefesy yu;ylw7uzi;,w)q 4,9zx yly while a positively charged glass rod is held near it. After the glass roiu4ywl,ey w7;zuyx 9);s y,qz d is removed, the electroscope

  A positive object touche:aa excd .ix:+,.ppew s a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavesep apwd e:cax, :i..x+?

  A large negatively charged object is placed8 mri3 5xxwb;ifaw3x * on an insulated table. A neutral metallic ball rolls straigh wxa wb;3fr58 xmx3i*it 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 each ball?

  Charge is

  What are the units of the Coulomb consta0hyfk gwp( 6k9hc/2qpnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancy*rc:6 jnh 6ice d. The first charge is larger in magnitude thanjcn*6y rhc6: i the second charge.

  Sphere A carries a net charge and sphere B b/ycp4hxgitn/1,g/a g 7w.8bek so(s is neutral. They are placed near each other on an insulated table. Which statement best (.x/, ba hbn/g7e8 4ogs1g iytp/sc kwdescribes the electrostatic force between them?

  Two charged objects attract each other with a certain*as5t(llrncz 37bs t2 force. If the charges on b3tzn75 tsb2 s lr*lc(aoth objects are doubled with no change in separation, the force between them

  Two charges are sepa ly3q6 t9c1w b(krrem+rated by a distance d and exert mutual attractive forces of F on each other. If the k1t(y cw l9er6+3mbr qcharges 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 hap7tmth, f, )5j:xs1d nfcc ln-c8:cxiepens 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 value? Th ,- secd :c1fj8t) cfmx7nix ,nlht5:ce force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. W,n ,o37/ y1dpeqnb- ox ann;gpvr+: yn 7prme6hat happens to the magnitude o/+oy n7;a , b,npn-:6e1ernr m vpxo 7dg3ypqnf the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton6 0lkcm bldwd + 1e.o.aa02zcl are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next lka+ewbo26dac.l .m0 cl 0dz1to the proton?

  An electron and a proton are separated by a distance of 1.0 m.p:gh 8e le (u))dx*jeb What happens to the size of the force on thele) 8xb :)gheej*p( ud proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at thc68g8zsl5 g-mzxyr 3fe center 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 mgrz86g-l fs8y 5 zx3c2.0 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)q 0aygk-;wfs 5bkdd/ the centroid 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 -ksd0qa5bk /dg; wfy)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 iw qsjb.u.7o-d s not a vector?

  At twice the distance from a point cha2 tw9+g2z zhp0ktui -xrge, the strength of the electric field

  Is it possible to have a zero e y(ka+pe/g hu o 3hva---;xnculectric field value between a negative and positive charge along the line joining the two cahnv+oxh(c-;- 3 pugay/k e -uharges?

  Is it possible to have a zero electrc 1 69jp00/ambkda0 mz l0qzpeic field value between two positive charges along the line joining the two charges?0memd z azl /ck0p09a j6pqb01

  Electric field lines near psitive1l7,4h rdat/ kas yu7y point charges

  The electric field shom21 vb- jz czw-tvaq)3wn

  Can electric field lines intersect in free spacevau5 ):k,qxts?

  A solid block of metal in electrostatic equilibrium is naxmbekd 7q3l6yqmc tf2; -3+placed in a uniform electric field. Give a statement t37 6mqdkealy;-q 3c+2fmb n xconcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters 2u(b3w0 wzki nmx fl+(are each given the same charge, the electric field (E) midway( f3(mx wu+w02 klnzbi between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reg nuy3s me:.run;j;(o jion where a uniform electric field is directed straight upward. What can be said concerning the c3 ; juo(euynjn;.s: mrharge on the block's top surface?

  If a conductor is in electrostatic ;8be rl zmha7mdg8i( 5equilibrium near an electric charge

  A positive point charge is enclosed (( j3 )tj5/*b 3ufjqavvxh wwsin a hollow metallic sphere that is grounded. As com*/tvbjvuww 3)jxqs(3 5 f(ahjpared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of c sf r5qk0; me;*fw9agsonductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is rdx f+a l(m,l.odqo46$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2, wn4wm f2a/eoyt/)hx .00 mC. How many more protons than electrons does this piece of nex fhw2ato/4w,)my /plastic have?

  What is the charge on 1 kg of prtdt jqs)h2e+5 otons?

  An atomic nucleus has a charge+1)fh 7jsgo fci ak1oss:h86 p 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, have charge values oks.x tg4:gtmh+u ik+- f 2.0 and -4.0 mC, respectively.thg4tsu:i+- k km.+xg What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1yk* mn5w;)ircx )r0jb.0 N. What is thjymrc0brn5)xki * ;)w e magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1lq ./znmwo0tz :0+ fb3f8 gjwf.0 N. How far apart are they?

  The force between a *rpm ohdcy66 15 rlyk,$30 \; mC$ 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-Nrszyl*c .9e l/ )pilk2 force. If they are moved to a new separation of 8.0 cm, what is the electric for2cy z)e li*rp/9sl.kl ce between them?

  Three identical point charges of 2.0 mC are placed on the x-axi9ol01l i b 4dmewvr4f-s. The first charge is at 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 1lml90re vb-d w foi44the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge p9 2ibx u-in2azzq7l7 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 el 2ilau zi9bn7p7qx2 -zectrostatic force which acts on the charge at the origin?

  Three point charges are located at the followi+v6bbfz bw) wavkwwf g-8;g)2ng 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 kb6)z8;ggbw )bw fw+wv2f- v a3.00-mC charge?

  A point charge of +Q is placed at thb 0++pqyaitd 2e center of a square, 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 ai+bd q02+t pya 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 nCu8swkci8 r6aewi/ ay67hbw , ) is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargewr k wb867/se)ui w,hyca 6ia8?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is 8p4,de6-wd -bjdspzq; s b6 dhat (0, 0.10 m); Q3 = 5.0 nC is at -4q6d ;pddb6-psdzjebw, h8s (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertxcfz8etii .). ices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic foii..c8z ) xeftrce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m5gd2pv 8w*qzs . At what point, on a line between the tw gqs*dp25 vwz8o 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 a +9.0-C chxzf 6 .e*bu1soatwjt,d7- ej3 se;f6 earge is at x = 4.0 m. Where on the x-axis can a thoezejfsxw .6bt 6da3s;fu 7-*je,e t1ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. W4dv :pg .apqa25kcx5 nhere can a third positive charge +q be placed so that the force on it is zervp ncx:k2 54ga5q.apdo?

  A copper penny has a 1zuzh0s j3e. omass 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 the attraction oou b y)1f22ozn+4ra5ipu eh)af a fixed proton some distance izah o)fyna1) 2ue2b4r5ou+pabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by no s7o-:l2vzfz jnconducting threads which are 30 cm long. Both are given identical czzv ofj- 72s:lharges, 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 mag1jqa(x fp;ozu(5z-wi m 7dh g;nitude of the electric field at a distance of 1.0 m from tao (-1xhu 7qfwizdzp; 5jgm;(he nucleus?

  What are the magnitude and direction of the electric field isptxg.u8t ;(gzab 1-at a distance of 1.50 m frpgbx8sa- t .u;1tiz g(om a 50.0-nC charge?

  A 5.0-C charge is 10 m ; -cyf2dski2 6yahjz(from a small test charge. What is the magnitude of the electric field at the locaths;yc( jfy da z2i-6k2ion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of t6l is.tbwvb2 *he elecilbtws*6 .b v2tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magni0*kr 3 p*sx8/lfpbekltt2k1:jmtd* cmam 7 n (tude of the force experienced by a 1.0 nC charge placed at the location of t/panbk3:7(l 28kmtl*jt*rk eptsd f1c0x mm*he test charge?

  Two point charges each have a value of 3.0 C and are separated by a distazlde (x08 d8li 5:bwnrnce of 4.0 m. What is the electric field at a point dw8l0 xdb5z(il8e:nr midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticj)nk+1cei sddc 1spy; m-.vd4k and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field ;dj- i p4k11y.ndcsmdcve )s +at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stickmepi;ec :,wh/cpvo35 and a -4.0 mC charge is placed at the 50 cm mark. At what pepev 5:m3,hopiw/cc; oint 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 u,ap g4rg(,jin8 a1mln ls9;u8ecj+ i x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thnl,a egm+j4( i uaj;l g9rsi8cpu1,n 8em?

  Three 3.0 mC charges are at the three corners of a square of 7;*k 2c 7anyiommrw*zside 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the ewa z;mm *k n7irc27o*ylectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners 56a* r g9tz u2z*olpuoof 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 magnitude of the electric field at the squagroz*5u tal6*29zpuo re's center?

  A force of 10 N acts e-zd,w3k. +ls1 -ktfwti*wiz/4xo) etsou;c on a charge of 5.0 mC when it is placed in a uniform electric field. What is t41d-so e 3x.zcw u,/wfw*t ltioe zkkt ;-si)+he magnitude of this electric field?

  A particle with a charge of 4.0 mC has a maf)mnj1 14;lspqs e fw9ss 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 6000 N/C po:dlw 3snu-c k4inting downward. What charge must be placed on the ball for it tu:c4w 3 sdnlk-o be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Th1 ( sduu8ziq(ae ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude u(adsu8z1(qi and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mn 6m/ s+j5f tnu:be5woagnitude of the electric w5jnb+feom5us 6:n/tfield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of r te71a7mex zs-56 xao3.0 mC. What is the electric field 6.0 cm from the center x5s 1oam6 -7trxe 7zeaof the sphere?