State the law of conservatiokm0p lz vk68fkroy a/ 0:tnk ,cj8r0p,n of electric charge.

  Is it possible for two negative cha4 bgw0cd,3 kazrges to attract each other?

  Is it possible for a positive and a negative charge to attract each 1ktj 50q), f xow8czrpother?

  A glass rod is rubbed with a piece of silk. During the procnk +syxi6dlb8mz66) x ess the glass rod acquires a positive char+6mixd kbzl8x 6ys)6 nge and the silk

  A proton carries a

  The model of the atoicji6(cil (ph+qo0r1ph0 , xgm shows a

  A neutral atom always66eb,s l qn aih9),nvh has

  An atom has more electrons than k6a.fb 0j3xxpt, id2fprotons. The atom is

  Materials in which the electrons are bound very 3 i +lykbb4q:-yo/8 r pzvn5zwtightly to the nuclei are referredi4 o5:b 8kp-r ynb /+q3lvzzyw to as

  Materials in which the electro-li;gz8-rqe nns are bound very loosely to the nuclei and can move about freely within the material a z8 lrqe-;ni-gre referred to as

  A negatively charged rod is brought near one end of ang-m+7-- 7b d;nou2zv qoeixx c uncharged metal bar. The end of the metal bar farthest from the charged rod womcdn2x 7b-z;oe-qx v g-u7i+ ill be charged

  Sphere A carries a net po ig -shl+3z-wv3- dvj,tc 5inwsitive charge, and sphere B is neutral. They are placed near each other on + z h -lt-vcg 5v3w,jwns3d-iian 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 positively?z.vp(pncr4)z ji9 t5o(vie3d

  An originally neutral electroscope is briefly touched weqfg mm+u+,vu m:m99 vith a positively charged glass rod. The ele,mfmev v9ugmq :+m u+9ctroscope

  An originally neutral electroscope is grounded briefly while a posiu+g .mjeowd 9s/w-c ,stively charged glass rod is held near it. After the glass rod is removeduwjg c9/e,.dm+ ssw-o, the electroscope

  A positive object touches a neut1ljxh4ud, do) ral electroscope, and the leaves separate. Then 4lj )u hx1d,oda negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated 3u3y3xh2psz ctable. 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 negativ2u xh33pcz y3se object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb co v8qis q9;ei6/4pyjcf nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lad+rpl7hbq3k q9iov oz.a:a3. 1gzj6 urger in magk7139pd:oug hil. a+ bqz3qojar. z6vnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placeoutv ot98i )8 ym3gvy1d near each other on ti v1 3m9t8ogyy)uov8an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with ag/r;9ebz doya18qa( vh4ex w- certain force. If the charges on both objects are doubled with no change in separation, the forcab1zvr hexdyo -e(q/w9ga; 48 e between them

  Two charges are separated by a distancewf3k h)* 9ckumqw:vp: d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are tum q3)9*c:kpkw:hv fwhe new mutual forces?

  Two charged objects attract each other with a fofa)sgbnk -lp,f9ek wx.8d1r t4 k)sx7 rce F. What happens 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? Ta l)t7sw. k,xef -8knk4s)gf9 pbd1xrhe force is now equal to

  An electron and a proton are separated by a diskl5q fbit14)v h61fzmtance of 1.0 m. What happens to the magnit14) 16i kvhtflq zb5fmude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by+s6g5b behudk+n82e ((-zjz 7 gewmtu a distance of 1.0 m. What happens to the mwhg8e zeu5((gbts +d6e2m kn-j7 zb+u agnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separat-2rq+oo w sc1zy+ qdm)ed by a distance of 1.0 m. What happens to the size of the force on the proton if tcqzsd+wy mo+) q12 r-ohe electron is moved 0.50 m closer to the proton?

  A point charge of +Q i-bei0huu0 5ft4c:-x*v ohtvi s placed at the 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 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 ix0i u be45to vcf-:huv-*ht 0the 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 centroid of an equilateral triangle. Whe4cm(siihm+ dk5c- ahp2/h kn, n 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 other vertic+42i(5kpmshdcc h ,/ ka-minhes?

  Which of the following is not a ve; gjm 3tijr74ictor?

  At twice the distance from a point charge, the streukq9 e0l ap. x)6fpmh3ngth of the electric field

  Is it possible to have a zero electric field value be ooh1/ 1tgelm( w86mfi9gmk n;tween a negative and positive charm;nm ho 9ot8ki/efw m g61g1(lge along the line joining the two charges?

  Is it possible to have a zeroz cmdku.19zz*5 -19 0wuwtyj y6qa fji electric field value between two positive charges along the -wza6wy105j19 9kzcf*iuztj m.uqyd line joining the two charges?

  Electric field lines near psitive pq:sda,a 21:yaj3vzmh oint charges

  The electric field s ftlvyy. v:ma,/7lxq lo0mn4(hown

  Can electric field lines intersm6 gpvxw*/ 7,b4w0 3ap kpubyzect in free space?

  A solid block of metal in electrostatic equilibrium i3b,fgk3am e66jrxo g:s placed in a uniform electric field. Give a stategak3r b6x:6g jf3e,om ment concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metaiwzn5s z3* 8m ug9t.dal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the su.53itmnd98a wz sz*gurface is

  A cubic block of aluminum rests on a wooden table in a region where a( dm7kzju6e rzet8e8y ad- 8j9 uniform electric field is directed straight upwardj (m- j87 ed8kuye8tdera69zz . What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric char.q8-hlec.oi wf s /xcrp+q16zge

  A positive point charge isscfp(4l+ ybnsg.24 mf enclosed in a hollow metallic sphere that is grounded. Asf fmcg24s+s(pl .nb 4y compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertief38pod- k ivf:,g 5jgvs of conductors in static equilibrium.

State Gauss's law.

  The charge carried by oh 9ya/ bsigfe8wbi,;si5.nm7 qh, +i fne electron 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 mw e1jc0q bhu(,C. How many more protons than electrons does this piece of pla ,e(0hb ujwq1cstic have?

  What is the charge on 1 knc nr7 3z4*l+kwemaf614rhf o+7opd kg of protons?

  An atomic nucleus has a charg7455 6va5 zkx xzdrfwfy4brr(e 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, haveppm, x,j0yn az 7l)0eyvp9kh, charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them h 0z jkn y,ep,x0pm)y,vpa7l9?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0*k zaj*ioo,s g,9*oqi:pnz g0 N. What is the magnitude of the second charge oi0na*jo szk,gzo*qg*p: i,9?

  Two 1.0-C charges have a force between them oofq*7; k ;j h2tk7fhvwf 1.0 N. How far apart are they?

  The force between a *yarafl * 7hnb) hv8 x5fpu)t9$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar;ay;f+evr+ t xt, experience a 1.0-N force. If they are moved to a new separation of vx;y re a+;t+f8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on thp *5gpfmk:nrha,ahsvf rke6;+rq1, : e x-axis. The first charge is 61rp:+ ,emhf ap g akrqsh*rnk5:; fv,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 the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge y kj:vjh ) g; rizb3*,gtqvr66of +2.0 mC is placed at the origin, -2.0 m C to the righgyj,*iqb v vgz j):3;66kr htrt 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 located at the following positions: Q1 = 2.00 mC at 1 xjt4n6j 7:gevc5oy)f ; hzifx = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Wcf z:vghxn e7jt1j4;)fi6o y 5hat 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, and6 gqz:l4h ).osecq,o m7s1vun 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 the1n.qmvugsqochoe ,s z6:l47 ) 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 at (0 i3 tfg -zi31t,ud*.hqd,vv .p mm)t+3lgwyrd, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitud1mtr *,uv.t3v i 3d d i+- 3ldgtywzf,)mpgq.he of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1 . p:h1yke 8h)41mw9 k:wutlpsnpbp( y.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 nC cm1b 9p( pue : t18pwynh4 :k)pwlhs.kyharge?

  Three identical charg6+ 35qatul-sw3cy d+3pcun coes of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fotyl6d qpc+cu5 3w-3 oac u+sn3rce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which ara4k6mcr,b og3 e separated by 3.0 m. At what point, on a line between the two charges, would it be pa6 grb34ko ,mcossible 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 charge is at x = 4.0x 4 6cg6jbd,e( j04ycbfsr1s w m. Where on the x-axis can a third charge be placed so the net force on4b w1scg6r 0b4 e6csdj (jxy,f it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where ca7kmn;fwtsy3rr( z3p5 n a third positive c5n trr3ps; 3mwkz( 7fyharge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total m x1hemq5i(k4of $4.0 \times 10^{12} \; electrons$ 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 l/uhh6m3/4v q r1nl fs0ck3n 1 )b1fixveag5 dagainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the elec3vsbne13lqmx6kvh4hu a11l/g 0d fr f n5 /)citron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondudk4c9nz+ 2 toxcting threads wx onc9zkt4+2 dhich are 30 cm long. Both are given 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 +40dhbyv)*bd 15 ke. What is the magnitude of the electric field at a distance of 1.0 *5b )1dkdybv hm from the nucleus?

  What are the magnitude and direction of the electric field at a distancz ars 3erls-vp n.t18o(2uwkasig5v 0a/+a6z e of 1.50 m from a 50. t3a/ . rkup(i vagzs6nr 0sae 5v2sz1a8wol+-0-nC charge?

  A 5.0-C charge is 10 m from a smalp d ndyrtm5gt4m-75 p1l test charge. What is the magnitude of the electric field at the locatp 5 5n1gm7 r4yp-ddttmion of the test charge?

  A 5.0-C charge is 10 m from a small test c)8a 0 gbhus+f- bdx.roharge. What is the direction of the electrf o-+g 0usa8xbd.)hrb ic field?

  A 5.0-C charge is 10 m from a small test chargxx 20wo/ (o hspcu-30q bm1nhie. What is the magnitude of the force experienced by a 1.0 nC-o w(0b3 /uq nhpo0i c1hxm2sx charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dip 5w +mhxm*uhd,3jlp -stance of 4.0 m. What is the electric field at a point midwupl d-3hj mw,+ h*5pmxay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charge.rb jxvs9+q2d is placed at the 50 cm mark.jvr2d +b9 qsx. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cj+ d/ky u,.rgjm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zrj d.,yjgku+ /ero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an9hs c wd1198ewc h-3wlccy 2tsd x = 0.20 m. What is the magnitude of the electric field at the poidyt1ch9c se1s 89hw 2cw- cwl3nt midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5pyf 70fx 9jxp20 m. The last cor0 x2p pfj7xf9yner is 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 are p,ndwu- o )lnj7laced 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 at (0, 1). What is the majd-7on,u n )wlgnitude 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 place0qdk(0gqi, m msx6v6e d in a uniform electric field. What is the magnitu(0mq6,gks6d qvix0m e de of this electric field?

  A particle with a charge of 4.0 mC haxxm* *roe vbj;0 mxrn+ 0;mw bb20tyi/s 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 electric field of 6000 N/C k2d78ne z/8 rg- qtehqhf+zj 7 ye))pgpointing downward. What charge must be placed on the ball for it to be pqtn)8-zkeg7 jhrd q7)+ye2/e hz8 gfsuspended?

  A foam ball of mass 0.150 g carries a charge of -2.8 laq60sg u/ld3 (cmfc00 nC. The ball is placed inside a uniform electri6 30m d8llacsc(g/q ufc 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 p.1 7+l9pby c8k fiqfr8 u0qex+2.0 mC. What is the magnitude of the electric fil .y+ pe898f0i pq u7xfr1qcbkeld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge oj ;qaqh v,d(+yh(li k3f 3.0 mC. What is the electric field 6.0 cm from the cente(h(+,jkhdyqa q 3ivl; r of the sphere?